update CHANGELOG.md (#11057 )

v2.5.8-stable (rev2) (#11051 )
* EIP 1884 Re-pricing of trie-size dependent operations (#10992) * Implement EIP-1283 reenable transition, EIP-1706 and EIP-2200 (#10191)
2019-09-16 12:00:04 +02:00 · 2019-09-13 15:46:03 +02:00 · 2019-09-13 11:53:49 +02:00 · 2019-09-12 18:43:53 +02:00 · 2019-08-29 12:06:49 +02:00 · 2019-08-12 18:55:11 +02:00
131 changed files with 3726 additions and 953 deletions
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -24,7 +24,42 @@ Also, try to include **steps to reproduce** the issue and expand on the **actual

 If you would like to contribute to Parity Ethereum, please **fork it**, fix bugs or implement features, and [propose a pull request](https://github.com/paritytech/parity-ethereum/compare).

-Please, refer to the [Coding Guide](https://wiki.parity.io/Coding-guide) in our wiki for more details about hacking on Parity.
+### Labels & Milestones
+
+We use [labels](https://github.com/paritytech/parity-ethereum/labels) to manage PRs and issues and communicate the state of a PR. Please familiarize yourself with them. Furthermore we are organizing issues in [milestones](https://github.com/paritytech/parity-ethereum/milestones). Best way to get started is to a pick a ticket from the current milestone tagged [`easy`](https://github.com/paritytech/parity-ethereum/labels/Q2-easy%20%F0%9F%92%83) and get going, or [`mentor`](https://github.com/paritytech/parity-ethereum/labels/Q1-mentor%20%F0%9F%95%BA) and get in contact with the mentor offering their support on that larger task.
+
+### Rules
+
+There are a few basic ground-rules for contributors (including the maintainer(s) of the project):
+
+* **No pushing directly to the master branch**.
+* **All modifications** must be made in a **pull-request** to solicit feedback from other contributors.
+* Pull-requests cannot be merged before CI runs green and two reviewers have given their approval.
+* Contributors should adhere to the [Parity Ethereum Style Guide](https://wiki.parity.io/Parity-Ethereum-Style-Guide).
+
+### Recommendations
+
+* **Non-master branch names** *should* be prefixed with a short name moniker, followed by the associated Github Issue ID (if any), and a brief description of the task using the format `<GITHUB_USERNAME>-<ISSUE_ID>-<BRIEF_DESCRIPTION>` (e.g. `gavin-123-readme`). The name moniker helps people to inquiry about their unfinished work, and the GitHub Issue ID helps your future self and other developers (particularly those who are onboarding) find out about and understand the original scope of the task, and where it fits into Parity Ethereum [Projects](https://github.com/paritytech/parity-ethereum/projects).
+* **Remove stale branches periodically**
+
+### Preparing Pull Requests
+
+* If your PR does not alter any logic (e.g. comments, dependencies, docs), then it may be tagged [`insubstantial`](https://github.com/paritytech/parity-ethereum/pulls?q=is%3Aopen+is%3Apr+label%3A%22A2-insubstantial+%F0%9F%91%B6%22).
+
+* Once a PR is ready for review please add the [`pleasereview`](https://github.com/paritytech/parity-ethereum/pulls?utf8=%E2%9C%93&q=is%3Aopen+is%3Apr+label%3A%22A0-pleasereview+%F0%9F%A4%93%22+) label.
+
+### Reviewing Pull Requests*:
+
+* At least two reviewers are required to review PRs (even for PRs tagged [`insubstantial`](https://github.com/paritytech/parity-ethereum/pulls?q=is%3Aopen+is%3Apr+label%3A%22A2-insubstantial+%F0%9F%91%B6%22)).
+
+When doing a review, make sure to look for any:
+
+* Buggy behavior.
+* Undue maintenance burden.
+* Breaking with house coding style.
+* Pessimization (i.e. reduction of speed as measured in the projects benchmarks).
+* Breaking changes should be carefuly reviewed and tagged as such so they end up in the [changelog](../CHANGELOG.md).
+* Uselessness (i.e. it does not strictly add a feature or fix a known issue).

 ## License.

--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,10 +13,6 @@ variables:
  SCCACHE_DIR:                     "/ci-cache/${CI_PROJECT_NAME}/sccache"
  CARGO_TARGET:                    x86_64-unknown-linux-gnu

-.no_git:                           &no_git # disable git strategy
-  variables:
-    GIT_STRATEGY:                  none
-    GIT_SUBMODULE_STRATEGY:        none

 .releaseable_branches:             # list of git refs for building GitLab artifacts (think "pre-release binaries")
  only:                            &releaseable_branches
@@ -46,7 +42,7 @@ variables:
        sccache --start-server
    - sccache -s
  after_script:
-    # sccache debug info
+    # sccache debug info 
    - if test -e sccache_debug.log;
      then
        echo "_____All crate-types:_____";
@@ -147,32 +143,32 @@ test-linux-nightly:

 build-android:
  <<:                              *build-on-linux
-  image:                           parity/rust-parity-ethereum-android-build:stretch
+  image:                           parity/parity-ci-android:stretch
  variables:
    CARGO_TARGET:                  armv7-linux-androideabi

 build-linux:
  <<:                              *build-on-linux
-  only:                            *releaseable_branches
+  # only:                            *releaseable_branches

 build-linux-i386:
  <<:                              *build-on-linux
  only:                            *releaseable_branches
-  image:                           parity/rust-parity-ethereum-build:i386
+  image:                           parity/parity-ci-i386:latest
  variables:
    CARGO_TARGET:                  i686-unknown-linux-gnu

 build-linux-arm64:
  <<:                              *build-on-linux
  only:                            *releaseable_branches
-  image:                           parity/rust-parity-ethereum-build:arm64
+  image:                           parity/parity-ci-arm64:latest
  variables:
    CARGO_TARGET:                  aarch64-unknown-linux-gnu

 build-linux-armhf:
  <<:                              *build-on-linux
  only:                            *releaseable_branches
-  image:                           parity/rust-parity-ethereum-build:armhf
+  image:                           parity/parity-ci-armhf:latest
  variables:
    CARGO_TARGET:                  armv7-unknown-linux-gnueabihf

@@ -205,11 +201,10 @@ build-windows:

 publish-docker:
  stage:                           publish
-  <<:                              *no_git
  only:                            *releaseable_branches
  except:
-    variables:
-      - $SCHEDULE_TAG == "nightly"
+    - nightly
+  when:                            manual
  dependencies:
    - build-linux
  environment:
@@ -219,23 +214,24 @@ publish-docker:
  services:
    - docker:dind
  variables:
+    GIT_STRATEGY:                  none
    DOCKER_HOST:                   tcp://localhost:2375
    DOCKER_DRIVER:                 overlay2
    GIT_STRATEGY:                  none
    # DOCKERFILE:                  tools/Dockerfile
    # CONTAINER_IMAGE:             parity/parity 
  script:
-    # we stopped pushing nightlies to dockerhub, will push to own registry prb.
    - ./tools/publish-docker.sh
  tags:
    - kubernetes-parity-build

-publish-snap:                      &publish-snap
+publish-snap-nightly:              &publish-snap
  stage:                           publish
-  <<:                              *no_git
-  only:                            *releaseable_branches
+  only:
+    - nightly
  image:                           snapcore/snapcraft
  variables:
+    GIT_STRATEGY:                  none
    BUILD_ARCH:                    amd64
  cache:                           {}
  dependencies:
@@ -245,7 +241,12 @@ publish-snap:                      &publish-snap
  script:
    - ./tools/publish-snap.sh

-publish-snap-i386:
+publish-snap-manually:
+  <<:                              *publish-snap
+  only:                            *releaseable_branches
+  when:                            manual
+
+publish-snap-i386-nightly:         &publish-snap-i386
  <<:                              *publish-snap
  variables:
    BUILD_ARCH:                    i386
@@ -253,7 +254,12 @@ publish-snap-i386:
  dependencies:
    - build-linux-i386

-publish-snap-arm64:
+publish-snap-i386-manually:
+  <<:                              *publish-snap-i386
+  only:                            *releaseable_branches
+  when:                            manual
+
+publish-snap-arm64-nightly:        &publish-snap-arm64
  <<:                              *publish-snap
  variables:
    BUILD_ARCH:                    arm64
@@ -261,7 +267,12 @@ publish-snap-arm64:
  dependencies:
    - build-linux-arm64

-publish-snap-armhf:
+publish-snap-arm64-manually:
+  <<:                              *publish-snap-arm64
+  only:                            *releaseable_branches
+  when:                            manual
+
+publish-snap-armhf-nightly:        &publish-snap-armhf
  <<:                              *publish-snap
  variables:
    BUILD_ARCH:                    armhf
@@ -269,11 +280,18 @@ publish-snap-armhf:
  dependencies:
    - build-linux-armhf

-publish-onchain:
-  stage:                           publish
-  <<:                              *no_git
+publish-snap-armhf-manually:
+  <<:                              *publish-snap-armhf
  only:                            *releaseable_branches
+  when:                            manual
+
+publish-onchain-nightly:           &publish-onchain
+  stage:                           publish
+  only:
+    - nightly
  cache:                           {}
+  variables:
+    GIT_STRATEGY:                  none
  dependencies:
    - build-linux
    - build-darwin
@@ -283,11 +301,18 @@ publish-onchain:
  tags:
    - linux-docker

-publish-awss3-release:
+publish-onchain-manually:
+  <<:                              *publish-onchain
+  only:                            *releaseable_branches
+  when:                            manual
+
+publish-release-awss3-nightly:     &publish-release-awss3
  image:                           parity/awscli:latest
  stage:                           publish
-  only:                            *releaseable_branches
-  <<:                              *no_git
+  only:
+    - nightly
+  variables:
+    GIT_STRATEGY:                  none
  cache:                           {}
  dependencies:
    - build-linux
@@ -309,17 +334,39 @@ publish-awss3-release:
  tags:
    - linux-docker

+publish-release-awss3-manually:
+  <<:                              *publish-release-awss3  
+  only:                            *releaseable_branches
+  when:                            manual
+
 publish-docs:
-  stage:                            publish
-  image:                            parity/rust-parity-ethereum-docs:xenial
+  stage:                           publish
+  image:                           parity/parity-ci-docs:latest
  only:
    - tags
  except:
    - nightly
-  cache:                            {}
-  dependencies:                     []
+  when:                            manual
+  cache:                           {}
+  dependencies:                    []
  script:
    - scripts/gitlab/publish-docs.sh
  tags:
    - linux-docker
  allow_failure:                   true
+
+publish-av-whitelist:
+  stage:                          publish
+  variables:
+    GIT_STRATEGY:                  none
+  only:                           *releaseable_branches
+  except:
+    - nightly
+  when:                           manual
+  cache:                          {}
+  dependencies:
+    - build-windows
+  script:
+    - scripts/gitlab/publish-av-whitelists.sh
+  tags:
+    - linux-docker
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,164 +1,130 @@
-## Parity-Ethereum [v2.4.3](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.3) (2019-03-22)
+## Parity-Ethereum [v2.5.8](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.8)

-Parity-Ethereum 2.4.3-beta is a bugfix release that improves performance and stability. This patch release contains a critical bug fix where serving light clients previously led to client crashes. Upgrading is highly recommended.
+Parity Ethereum v2.5.8-stable is a patch release that improves security, stability and performance.
+
+* The most noteworthy improvement in this release is incorporating all the EIPs required for the Istanbul hard fork.
+* This release also fixes certain security and performance issues, one of which was suspected to be consensus-threatening but turned out to be benign. Thanks to Martin Holst Swende and Felix Lange from the Ethereum Foundation for bringing the suspicious issue to our attention.

 The full list of included changes:
- 2.4.3 beta backports ([#10508](https://github.com/paritytech/parity-ethereum/pull/10508))
-  - Version: bump beta
-  - Add additional request tests ([#10503](https://github.com/paritytech/parity-ethereum/pull/10503))

-## Parity-Ethereum [v2.4.2](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.2) (2019-03-20)
+* add more tx tests (#11038)
+* Fix parallel transactions race-condition (#10995)
+* Add blake2_f precompile (#11017)
+* [trace] introduce trace failed to Ext (#11019)
+* Edit publish-onchain.sh to use https (#11016)
+* Fix deadlock in network-devp2p (#11013)
+* EIP 1108: Reduce alt_bn128 precompile gas costs (#11008)
+* xDai chain support and nodes list update (#10989)
+* EIP 2028: transaction gas lowered from 68 to 16 (#10987)
+* EIP-1344 Add CHAINID op-code (#10983)
+* manual publish jobs for releases, no changes for nightlies (#10977)
+* [blooms-db] Fix benchmarks (#10974)
+* Verify transaction against its block during import (#10954)
+* Better error message for rpc gas price errors (#10931)
+* tx-pool: accept local tx with higher gas price when pool full (#10901)
+* Fix fork choice (#10837)
+* Cleanup unused vm dependencies (#10787)
+* Fix compilation on recent nightlies (#10991)
+* Don't build rpc with ethcore test-helpers (#11048) 
+* EIP 1884 Re-pricing of trie-size dependent operations  (#10992)
+* Implement EIP-1283 reenable transition, EIP-1706 and EIP-2200  (#10191)

-Parity-Ethereum 2.4.2-beta is a bugfix release that improves performance and stability.
+## Parity-Ethereum [v2.5.7](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.7)
+
+Parity Ethereum v2.5.7-stable is a bugfix release that fixes a potential DoS attack in the trace_call RPC method. This is a critical upgrade for anyone running Parity nodes with RPC exposed to the public internet (and highly recommended for anyone else). For details see this blog post.
+
+## Parity-Ethereum [v2.5.6](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.6)
+
+Parity-Ethereum v2.5.6-stable is a bugfix release that improves stability.
+
+* Allow specifying hostnames for node URLs
+* Fix a bug where archive nodes were losing peers

 The full list of included changes:
- 2.4.2 beta backports ([#10488](https://github.com/paritytech/parity-ethereum/pull/10488))
-  - Version: bump beta
-  - Сaching through docker volume ([#10477](https://github.com/paritytech/parity-ethereum/pull/10477))
-  - fix win&mac build ([#10486](https://github.com/paritytech/parity-ethereum/pull/10486))
-  - fix(extract `timestamp_checked_add` as lib) ([#10383](https://github.com/paritytech/parity-ethereum/pull/10383))

-## Parity-Ethereum [v2.4.1](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.1) (2019-03-19)
+* Kaspersky AV whitelisting (#10919)
+* Avast whitelist script (#10900) 
+* Docker images renaming (#10863) 
+* Remove excessive warning (#10831) 
+* Allow --nat extip:your.host.here.org (#10830) 
+* When updating the client or when called from RPC, sleep should mean sleep (#10814)
+* added new ropsten-bootnode and removed old one (#10794)
+* ethkey no longer uses byteorder (#10786) 
+* Do not drop the peer with None difficulty (#10772)
+* docs: Update Readme with TOC, Contributor Guideline. Update Cargo package descriptions (#10652)

-Parity-Ethereum 2.4.1-beta is a bugfix release that improves performance and stability.
+## Parity-Ethereum [v2.5.5](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.5)
+
+Parity-Ethereum v2.5.5-stable is a minor release that improves performance and stability.
+This release stabilises the 2.5 branch.
+
+As of today, Parity-Ethereum 2.4 reaches end of life and everyone is
+encouraged to upgrade.
+
+## Parity-Ethereum [v2.5.4](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.4)
+
+Parity Ethereum v2.5.4-beta is a security update that addresses servo/rust-smallvec#148

 The full list of included changes:
- 2.4.1 beta backports ([#10471](https://github.com/paritytech/parity-ethereum/pull/10471))
-  - Version: bump beta
-  - Implement parity_versionInfo & parity_setChain on LC; fix parity_setChain ([#10312](https://github.com/paritytech/parity-ethereum/pull/10312))
-  - CI publish to aws ([#10446](https://github.com/paritytech/parity-ethereum/pull/10446))
-  - CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))
-  - Revert "CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))" ([#10456](https://github.com/paritytech/parity-ethereum/pull/10456))
-  - Tests parallelized ([#10452](https://github.com/paritytech/parity-ethereum/pull/10452))
-  - Ensure static validator set changes are recognized ([#10467](https://github.com/paritytech/parity-ethereum/pull/10467))

-## Parity-Ethereum [v2.4.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.0) (2019-02-25)
+* cargo update -p smallvec ([#10822](https://github.com/paritytech/parity-ethereum/pull/10822))

-Parity-Ethereum 2.4.0-beta is our trifortnightly minor version release coming with a lot of new features as well as bugfixes and performance improvements.
+## Parity-Ethereum [v2.5.3](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.3)

-Notable changes:
- Account management is now deprecated ([#10213](https://github.com/paritytech/parity-ethereum/pull/10213))
- Local accounts can now be specified via CLI ([#9960](https://github.com/paritytech/parity-ethereum/pull/9960))
- Chains can now be reset to a particular block via CLI ([#9782](https://github.com/paritytech/parity-ethereum/pull/9782))
- Ethash now additionally implements ProgPoW ([#9762](https://github.com/paritytech/parity-ethereum/pull/9762))
- The `eip1283DisableTransition` flag was added to revert EIP-1283 ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
+Parity-Ethereum 2.5.3-beta is a bugfix release that improves performance and stability.
+
+* EthereumClassic: activate the Atlantis Hardfork
+* Clique: fix time overflow
+* State tests: treat empty accounts the same as non-existant accounts (EIP 1052)
+* Networking: support discovery-only peers (geth bootnodes)
+* Snapshotting: fix unclean shutdown while snappshotting is under way

 The full list of included changes:
- More Backports for Beta 2.4.0 ([#10431](https://github.com/paritytech/parity-ethereum/pull/10431))
-  - Revert some changes, could be buggy ([#10399](https://github.com/paritytech/parity-ethereum/pull/10399))
-  - Ci: clean up gitlab-ci.yml leftovers from previous merge ([#10429](https://github.com/paritytech/parity-ethereum/pull/10429))
-  - 10000 > 5000 ([#10422](https://github.com/paritytech/parity-ethereum/pull/10422))
-  - Fix underflow in pip, closes [#10419](https://github.com/paritytech/parity-ethereum/pull/10419) ([#10423](https://github.com/paritytech/parity-ethereum/pull/10423))
-  - Fix panic when logging directory does not exist, closes [#10420](https://github.com/paritytech/parity-ethereum/pull/10420) ([#10424](https://github.com/paritytech/parity-ethereum/pull/10424))
-  - Update hardcoded headers for Foundation, Ropsten, Kovan and Classic ([#10417](https://github.com/paritytech/parity-ethereum/pull/10417))
- Backports for Beta 2.4.0 ([#10416](https://github.com/paritytech/parity-ethereum/pull/10416))
-  - No-git for publish jobs, empty artifacts dir ([#10393](https://github.com/paritytech/parity-ethereum/pull/10393))
-  - Snap: reenable i386, arm64, armhf architecture publishing ([#10386](https://github.com/paritytech/parity-ethereum/pull/10386))
-  - Tx pool: always accept local transactions ([#10375](https://github.com/paritytech/parity-ethereum/pull/10375))
-  - Fix to_pod storage trie value decoding ([#10368](https://github.com/paritytech/parity-ethereum/pull/10368))
- Version: mark 2.4.0 beta
- Update to latest mem-db, hash-db and trie-db. ([#10314](https://github.com/paritytech/parity-ethereum/pull/10314))
- Tx pool: always accept local transactions ([#10375](https://github.com/paritytech/parity-ethereum/pull/10375))
- Fix(trace_main! macro): don't re-export ([#10384](https://github.com/paritytech/parity-ethereum/pull/10384))
- Exchanged old(azure) bootnodes with new(ovh) ones ([#10309](https://github.com/paritytech/parity-ethereum/pull/10309))
- Ethash: implement Progpow ([#9762](https://github.com/paritytech/parity-ethereum/pull/9762))
- Snap: add the removable-media plug ([#10377](https://github.com/paritytech/parity-ethereum/pull/10377))
- Add message to IO errors ([#10324](https://github.com/paritytech/parity-ethereum/pull/10324))
- Chore(bump parity-daemonize): require rust >= 1.31 ([#10359](https://github.com/paritytech/parity-ethereum/pull/10359))
- Secretstore: use in-memory transport in cluster tests ([#9850](https://github.com/paritytech/parity-ethereum/pull/9850))
- Add fields to `memzero`'s Cargo.toml ([#10362](https://github.com/paritytech/parity-ethereum/pull/10362))
- Snap: release untagged versions from branches to the candidate snap channel ([#10357](https://github.com/paritytech/parity-ethereum/pull/10357))
- Fix(compilation warns): `no-default-features` ([#10346](https://github.com/paritytech/parity-ethereum/pull/10346))
- No volumes are needed, just run -v volume:/path/in/the/container ([#10345](https://github.com/paritytech/parity-ethereum/pull/10345))
- Fixed misstype ([#10351](https://github.com/paritytech/parity-ethereum/pull/10351))
- Snap: prefix version and populate candidate channel ([#10343](https://github.com/paritytech/parity-ethereum/pull/10343))
- Bundle protocol and packet_id together in chain sync ([#10315](https://github.com/paritytech/parity-ethereum/pull/10315))
- Role back docker build image and docker deploy image to ubuntu:xenial… ([#10338](https://github.com/paritytech/parity-ethereum/pull/10338))
- Change docker image based on debian instead of ubuntu due to the chan… ([#10336](https://github.com/paritytech/parity-ethereum/pull/10336))
- Don't add discovery initiators to the node table ([#10305](https://github.com/paritytech/parity-ethereum/pull/10305))
- Fix(docker): fix not receives SIGINT ([#10059](https://github.com/paritytech/parity-ethereum/pull/10059))
- Snap: official image / test ([#10168](https://github.com/paritytech/parity-ethereum/pull/10168))
- Fix(add helper for timestamp overflows) ([#10330](https://github.com/paritytech/parity-ethereum/pull/10330))
- Additional error for invalid gas ([#10327](https://github.com/paritytech/parity-ethereum/pull/10327))
- Revive parity_setMinGasPrice RPC call ([#10294](https://github.com/paritytech/parity-ethereum/pull/10294))
- Add Statetest support for Constantinople Fix ([#10323](https://github.com/paritytech/parity-ethereum/pull/10323))
- Fix(parity-clib): grumbles that were not addressed in [#9920](https://github.com/paritytech/parity-ethereum/pull/9920) ([#10154](https://github.com/paritytech/parity-ethereum/pull/10154))
- Fix(light-rpc): Make `light_sync` generic ([#10238](https://github.com/paritytech/parity-ethereum/pull/10238))
- Fix publish job ([#10317](https://github.com/paritytech/parity-ethereum/pull/10317))
- Secure WS-RPC: grant access to all apis ([#10246](https://github.com/paritytech/parity-ethereum/pull/10246))
- Make specification of protocol in SyncRequester::send_request explicit ([#10295](https://github.com/paritytech/parity-ethereum/pull/10295))
- Fix: parity-clib/examples/cpp/CMakeLists.txt ([#10313](https://github.com/paritytech/parity-ethereum/pull/10313))
- Ci optimizations ([#10297](https://github.com/paritytech/parity-ethereum/pull/10297))
- Increase number of requested block bodies in chain sync ([#10247](https://github.com/paritytech/parity-ethereum/pull/10247))
- Deprecate account management ([#10213](https://github.com/paritytech/parity-ethereum/pull/10213))
- Properly handle check_epoch_end_signal errors ([#10015](https://github.com/paritytech/parity-ethereum/pull/10015))
- Fix(osx and windows builds): bump parity-daemonize ([#10291](https://github.com/paritytech/parity-ethereum/pull/10291))
- Add missing step for Using `systemd` service file ([#10175](https://github.com/paritytech/parity-ethereum/pull/10175))
- Call private contract methods from another private contract (read-onl… ([#10086](https://github.com/paritytech/parity-ethereum/pull/10086))
- Update ring to 0.14 ([#10262](https://github.com/paritytech/parity-ethereum/pull/10262))
- Fix(secret-store): deprecation warning ([#10301](https://github.com/paritytech/parity-ethereum/pull/10301))
- Update to jsonrpc-derive 10.0.2, fixes aliases bug ([#10300](https://github.com/paritytech/parity-ethereum/pull/10300))
- Convert to jsonrpc-derive, use jsonrpc-* from crates.io ([#10298](https://github.com/paritytech/parity-ethereum/pull/10298))
- Fix Windows build ([#10284](https://github.com/paritytech/parity-ethereum/pull/10284))
- Don't run the CPP example on CI ([#10285](https://github.com/paritytech/parity-ethereum/pull/10285))
- Additional tests for uint deserialization. ([#10279](https://github.com/paritytech/parity-ethereum/pull/10279))
- Prevent silent errors in daemon mode ([#10007](https://github.com/paritytech/parity-ethereum/pull/10007))
- Fix join-set test to be deterministic. ([#10263](https://github.com/paritytech/parity-ethereum/pull/10263))
- Update CHANGELOG-2.2.md ([#10254](https://github.com/paritytech/parity-ethereum/pull/10254))
- Macos heapsize force jemalloc ([#10234](https://github.com/paritytech/parity-ethereum/pull/10234))
- Allow specifying local accounts via CLI ([#9960](https://github.com/paritytech/parity-ethereum/pull/9960))
- Take in account zero gas price certification when doing transact_cont… ([#10232](https://github.com/paritytech/parity-ethereum/pull/10232))
- Update CHANGELOG.md ([#10249](https://github.com/paritytech/parity-ethereum/pull/10249))
- Fix typo: CHANGELOG-2.1 -> CHANGELOG-2.2 ([#10233](https://github.com/paritytech/parity-ethereum/pull/10233))
- Update copyright year to 2019. ([#10181](https://github.com/paritytech/parity-ethereum/pull/10181))
- Fixed: types::transaction::SignedTransaction; ([#10229](https://github.com/paritytech/parity-ethereum/pull/10229))
- Fix(ManageNetwork): replace Range with RangeInclusive ([#10209](https://github.com/paritytech/parity-ethereum/pull/10209))
- Import rpc transactions sequentially ([#10051](https://github.com/paritytech/parity-ethereum/pull/10051))
- Enable St-Peters-Fork ("Constantinople Fix") ([#10223](https://github.com/paritytech/parity-ethereum/pull/10223))
- Add EIP-1283 disable transition ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
- Echo CORS request headers by default ([#10221](https://github.com/paritytech/parity-ethereum/pull/10221))
- Happy New Year! ([#10211](https://github.com/paritytech/parity-ethereum/pull/10211))
- Perform stripping during build ([#10208](https://github.com/paritytech/parity-ethereum/pull/10208))
- Remove CallContract and RegistryInfo re-exports from `ethcore/client` ([#10205](https://github.com/paritytech/parity-ethereum/pull/10205))
- Extract CallContract and RegistryInfo traits into their own crate ([#10178](https://github.com/paritytech/parity-ethereum/pull/10178))
- Update the changelogs for 2.1.11, 2.2.6, 2.2.7, and 2.3.0 ([#10197](https://github.com/paritytech/parity-ethereum/pull/10197))
- Cancel Constantinople HF on POA Core ([#10198](https://github.com/paritytech/parity-ethereum/pull/10198))
- Adds cli interface to allow reseting chain to a particular block ([#9782](https://github.com/paritytech/parity-ethereum/pull/9782))
- Run all `igd` methods in its own thread ([#10195](https://github.com/paritytech/parity-ethereum/pull/10195))
- Pull constantinople on ethereum network ([#10189](https://github.com/paritytech/parity-ethereum/pull/10189))
- Update for Android cross-compilation. ([#10180](https://github.com/paritytech/parity-ethereum/pull/10180))
- Version: bump fork blocks for kovan and foundation ([#10186](https://github.com/paritytech/parity-ethereum/pull/10186))
- Handle the case for contract creation on an empty but exist account w… ([#10065](https://github.com/paritytech/parity-ethereum/pull/10065))
- Align personal_unlockAccount behaviour when permanent unlock is disab… ([#10060](https://github.com/paritytech/parity-ethereum/pull/10060))
- Drop `runtime` after others (especially `ws_server`) ([#10179](https://github.com/paritytech/parity-ethereum/pull/10179))
- Version: bump nightly to 2.4 ([#10165](https://github.com/paritytech/parity-ethereum/pull/10165))
- Skip locking in statedb for non-canon blocks ([#10141](https://github.com/paritytech/parity-ethereum/pull/10141))
- Remove reference to ui-interface command-line option ([#10170](https://github.com/paritytech/parity-ethereum/pull/10170))
- Fix [#9822](https://github.com/paritytech/parity-ethereum/pull/9822): trace_filter does not return failed contract creation ([#10140](https://github.com/paritytech/parity-ethereum/pull/10140))
- Fix _cannot recursively call into `Core`_ issue ([#10144](https://github.com/paritytech/parity-ethereum/pull/10144))
- Fix(whisper): correct PoW calculation ([#10166](https://github.com/paritytech/parity-ethereum/pull/10166))
- Bump JSON-RPC ([#10151](https://github.com/paritytech/parity-ethereum/pull/10151))
- Ping nodes from discovery ([#10167](https://github.com/paritytech/parity-ethereum/pull/10167))
- Fix(android): remove dependency to libusb ([#10161](https://github.com/paritytech/parity-ethereum/pull/10161))
- Refactor(trim_right_matches -> trim_end_matches) ([#10159](https://github.com/paritytech/parity-ethereum/pull/10159))
- Merge Machine and WithRewards ([#10071](https://github.com/paritytech/parity-ethereum/pull/10071))

-## Previous releases
+* ethcore/res: activate atlantis classic hf on block 8772000 ([#10766](https://github.com/paritytech/parity-ethereum/pull/10766))
+* fix docker tags for publishing ([#10741](https://github.com/paritytech/parity-ethereum/pull/10741))
+* fix: aura don't add `SystemTime::now()` ([#10720](https://github.com/paritytech/parity-ethereum/pull/10720))
+* Treat empty account the same as non-exist accounts in EIP-1052 ([#10775](https://github.com/paritytech/parity-ethereum/pull/10775))
+* DevP2p: Get node IP address and udp port from Socket, if not included in PING packet ([#10705](https://github.com/paritytech/parity-ethereum/pull/10705))
+* Add a way to signal shutdown to snapshotting threads ([#10744](https://github.com/paritytech/parity-ethereum/pull/10744))
+
+## Parity-Ethereum [v2.5.2](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.2)
+
+Parity-Ethereum 2.5.2-beta is a bugfix release that improves performance and stability.
+
+Among others, it enables the _Atlantis_ hardfork on **Morden** and **Kotti** Classic networks.
+
+The full list of included changes:
+
+* [CI] allow cargo audit to fail ([#10676](https://github.com/paritytech/parity-ethereum/pull/10676))
+* Reset blockchain properly ([#10669](https://github.com/paritytech/parity-ethereum/pull/10669))
+* new image ([#10673](https://github.com/paritytech/parity-ethereum/pull/10673))
+* Update publishing ([#10644](https://github.com/paritytech/parity-ethereum/pull/10644))
+* enable lto for release builds ([#10717](https://github.com/paritytech/parity-ethereum/pull/10717))
+* Use RUSTFLAGS to set the optimization level ([#10719](https://github.com/paritytech/parity-ethereum/pull/10719))
+* ethcore: enable ECIP-1054 for classic ([#10731](https://github.com/paritytech/parity-ethereum/pull/10731))
+
+## Parity-Ethereum [v2.5.1](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.1)
+
+Parity-Ethereum 2.5.1-beta is a bugfix release that improves performance and stability. 
+
+Among others, it enables the Petersburg hardfork on **Rinkeby** and **POA-Core** Network, as well as the **Kovan** Network community hardfork.
+
+The full list of included changes:
+
+* ci: publish docs debug ([#10638](https://github.com/paritytech/parity-ethereum/pull/10638))
+
+## Parity-Ethereum [v2.5.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.5.0)
+
+Parity-Ethereum 2.5.0-beta is a minor release that improves performance and stabilizes the 2.5 branch by marking it as beta release. 
+
+- This release adds support for the Clique consensus engine ([#9981](https://github.com/paritytech/parity-ethereum/pull/9981))
+  - This enables Parity-Ethereum users to use the Görli, the Kotti Classic, and the legacy Rinkeby testnet. To get started try `parity --chain goerli`; note that light client support is currently not yet fully functional.
+- This release removes the dead chain configs for Easthub and Ethereum Social ([#10531](https://github.com/paritytech/parity-ethereum/pull/10531))
+
+As of today, Parity-Ethereum 2.3 reaches end of life and everyone is encouraged to upgrade.
+
+The full list of included changes:
+
+* fix(light cull): poll light cull instead of timer ([#10559](https://github.com/paritytech/parity-ethereum/pull/10559))

- [CHANGELOG-2.3](docs/CHANGELOG-2.3.md) (_stable_)
- [CHANGELOG-2.2](docs/CHANGELOG-2.2.md) (EOL: 2019-02-25)
- [CHANGELOG-2.1](docs/CHANGELOG-2.1.md) (EOL: 2019-01-16)
- [CHANGELOG-2.0](docs/CHANGELOG-2.0.md) (EOL: 2018-11-15)
- [CHANGELOG-1.11](docs/CHANGELOG-1.11.md) (EOL: 2018-09-19)
- [CHANGELOG-1.10](docs/CHANGELOG-1.10.md) (EOL: 2018-07-18)
- [CHANGELOG-1.9](docs/CHANGELOG-1.9.md) (EOL: 2018-05-09)
- [CHANGELOG-1.8](docs/CHANGELOG-1.8.md) (EOL: 2018-03-22)
- [CHANGELOG-1.7](docs/CHANGELOG-1.7.md) (EOL: 2018-01-25)
- [CHANGELOG-1.6](docs/CHANGELOG-1.6.md) (EOL: 2017-10-15)
- [CHANGELOG-1.5](docs/CHANGELOG-1.5.md) (EOL: 2017-07-28)
- [CHANGELOG-1.4](docs/CHANGELOG-1.4.md) (EOL: 2017-03-13)
- [CHANGELOG-1.3](docs/CHANGELOG-1.3.md) (EOL: 2017-01-19)
- [CHANGELOG-1.2](docs/CHANGELOG-1.2.md) (EOL: 2016-11-07)
- [CHANGELOG-1.1](docs/CHANGELOG-1.1.md) (EOL: 2016-08-12)
- [CHANGELOG-1.0](docs/CHANGELOG-1.0.md) (EOL: 2016-06-24)
- [CHANGELOG-0.9](docs/CHANGELOG-0.9.md) (EOL: 2016-05-02)
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -357,102 +357,34 @@ dependencies = [
 "thread-scoped 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
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 [[package]]
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+ "crossbeam-epoch 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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 [[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
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+ "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -462,10 +394,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@@ -564,6 +497,13 @@ name = "edit-distance"
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+[[package]]
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+dependencies = [
+ "rustc-hex 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
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+
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@@ -709,7 +649,8 @@ dependencies = [
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@@ -731,6 +672,7 @@ dependencies = [
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+ "triehash-ethereum 0.2.0",
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 [[package]]
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@@ -1203,7 +1146,7 @@ dependencies = [
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- "parity-wordlist 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-wordlist 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1220,7 +1163,7 @@ dependencies = [
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 "panic_hook 0.1.0",
- "parity-wordlist 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1240,7 +1183,7 @@ dependencies = [
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- "parity-wordlist 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parity-wordlist 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1278,6 +1221,7 @@ dependencies = [
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 "heapsize 0.4.2 (git+https://github.com/cheme/heapsize.git?branch=ec-macfix)",
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 "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1579,6 +1523,23 @@ name = "hex"
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 source = "registry+https://github.com/rust-lang/crates.io-index"

+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "hex-literal-impl 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro-hack 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
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+
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+dependencies = [
+ "proc-macro-hack 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -2139,8 +2100,11 @@ dependencies = [

 [[package]]
 name = "memoffset"
-version = "0.2.1"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]

 [[package]]
 name = "memory-cache"
@@ -2457,7 +2421,7 @@ dependencies = [
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 "panic_hook 0.1.0",
- "parity-ethereum 2.5.5",
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 "tokio 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
 "tokio-current-thread 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2487,7 +2451,7 @@ dependencies = [

 [[package]]
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 dependencies = [
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@@ -2540,7 +2504,7 @@ dependencies = [
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 "parity-runtime 0.1.0",
 "parity-updater 1.12.0",
- "parity-version 2.5.5",
+ "parity-version 2.5.8",
 "parity-whisper 0.1.0",
 "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2683,7 +2647,7 @@ dependencies = [
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 "parity-updater 1.12.0",
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@@ -2697,7 +2661,7 @@ dependencies = [
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- "transaction-pool 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "transaction-pool 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "transient-hashmap 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "vm 0.1.0",
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@@ -2781,7 +2745,7 @@ dependencies = [
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@@ -2791,7 +2755,7 @@ dependencies = [

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@@ -2840,12 +2804,11 @@ dependencies = [

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- "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@@ -3061,6 +3024,16 @@ dependencies = [
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+[[package]]
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+ "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
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+
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@@ -3069,6 +3042,14 @@ dependencies = [
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -3126,6 +3107,14 @@ dependencies = [
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -3233,22 +3222,23 @@ dependencies = [

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- "rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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 dependencies = [
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+ "crossbeam-queue 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -3480,6 +3470,11 @@ name = "scopeguard"
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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@@ -3660,6 +3655,16 @@ dependencies = [
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -3970,7 +3975,7 @@ name = "tokio-threadpool"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "crossbeam-deque 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -4055,7 +4060,7 @@ dependencies = [

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@@ -4200,6 +4205,11 @@ name = "unicode-xid"
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+[[package]]
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+
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@@ -4283,15 +4293,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 [[package]]
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@@ -4568,6 +4569,8 @@ dependencies = [
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 "checksum hidapi 0.3.1 (git+https://github.com/paritytech/hidapi-rs)" = "<none>"
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@@ -4622,7 +4625,7 @@ dependencies = [
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@@ -4662,7 +4665,7 @@ dependencies = [
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 "checksum parity-tokio-ipc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "eb002c2d3539ccd3b82bd915ec060028d4ab350ad203dbffa20028c1e483af5b"
 "checksum parity-wasm 0.31.3 (registry+https://github.com/rust-lang/crates.io-index)" = "511379a8194230c2395d2f5fa627a5a7e108a9f976656ce723ae68fca4097bfc"
-"checksum parity-wordlist 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf13102febd98f4ad416a526b42deb82daf482626ba6ab10d0ebf8f45327514c"
+"checksum parity-wordlist 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "573d08f0d3bc8a6ffcdac1de2725b5daeed8db26345a9c12d91648e2d6457f3e"
 "checksum parity-ws 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2fec5048fba72a2e01baeb0d08089db79aead4b57e2443df172fb1840075a233"
 "checksum parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f0802bff09003b291ba756dc7e79313e51cc31667e94afbe847def490424cde5"
 "checksum parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ab41b4aed082705d1056416ae4468b6ea99d52599ecf3169b00088d43113e337"
@@ -4683,13 +4686,16 @@ dependencies = [
 "checksum primal-check 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8e65f96c0a171f887198c274392c99a116ef65aa7f53f3b6d4902f493965c2d1"
 "checksum primal-estimate 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "56ea4531dde757b56906493c8604641da14607bf9cdaa80fb9c9cabd2429f8d5"
 "checksum primal-sieve 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "da2d6ed369bb4b0273aeeb43f07c105c0117717cbae827b20719438eb2eb798c"
+"checksum proc-macro-hack 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e688f31d92ffd7c1ddc57a1b4e6d773c0f2a14ee437a4b0a4f5a69c80eb221c8"
 "checksum proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)" = "3d7b7eaaa90b4a90a932a9ea6666c95a389e424eff347f0f793979289429feee"
+"checksum proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e98a83a9f9b331f54b924e68a66acb1bb35cb01fb0a23645139967abefb697e8"
 "checksum protobuf 1.7.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e14ccd6b79ec748412d4f2dfde1a80fa363a67def4062969f8aed3d790a30f28"
 "checksum pulldown-cmark 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8361e81576d2e02643b04950e487ec172b687180da65c731c03cf336784e6c07"
 "checksum pwasm-utils 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e9135bed7b452e20dbb395a2d519abaf0c46d60e7ecc02daeeab447d29bada1"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
 "checksum quote 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)" = "dd636425967c33af890042c483632d33fa7a18f19ad1d7ea72e8998c6ef8dea5"
+"checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 "checksum rand 0.3.22 (registry+https://github.com/rust-lang/crates.io-index)" = "15a732abf9d20f0ad8eeb6f909bf6868722d9a06e1e50802b6a70351f40b4eb1"
 "checksum rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8356f47b32624fef5b3301c1be97e5944ecdd595409cc5da11d05f211db6cfbd"
 "checksum rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e464cd887e869cddcae8792a4ee31d23c7edd516700695608f5b98c67ee0131c"
@@ -4701,8 +4707,8 @@ dependencies = [
 "checksum rand_isaac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ded997c9d5f13925be2a6fd7e66bf1872597f759fd9dd93513dd7e92e5a5ee08"
 "checksum rand_pcg 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "086bd09a33c7044e56bb44d5bdde5a60e7f119a9e95b0775f545de759a32fe05"
 "checksum rand_xorshift 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "effa3fcaa47e18db002bdde6060944b6d2f9cfd8db471c30e873448ad9187be3"
-"checksum rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "df7a791f788cb4c516f0e091301a29c2b71ef680db5e644a7d68835c8ae6dbfa"
-"checksum rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b055d1e92aba6877574d8fe604a63c8b5df60f60e5982bf7ccbb1338ea527356"
+"checksum rayon 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a4b0186e22767d5b9738a05eab7c6ac90b15db17e5b5f9bd87976dd7d89a10a4"
+"checksum rayon-core 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ebbe0df8435ac0c397d467b6cad6d25543d06e8a019ef3f6af3c384597515bd2"
 "checksum redox_syscall 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "c214e91d3ecf43e9a4e41e578973adeb14b474f2bee858742d127af75a0112b1"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9329abc99e39129fcceabd24cf5d85b4671ef7c29c50e972bc5afe32438ec384"
@@ -4728,6 +4734,7 @@ dependencies = [
 "checksum same-file 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "10f7794e2fda7f594866840e95f5c5962e886e228e68b6505885811a94dd728c"
 "checksum scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
+"checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
 "checksum sct 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2f5adf8fbd58e1b1b52699dc8bed2630faecb6d8c7bee77d009d6bbe4af569b9"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
@@ -4752,6 +4759,7 @@ dependencies = [
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
 "checksum syn 0.15.26 (registry+https://github.com/rust-lang/crates.io-index)" = "f92e629aa1d9c827b2bb8297046c1ccffc57c99b947a680d3ccff1f136a3bee9"
+"checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
 "checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
 "checksum synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "73687139bf99285483c96ac0add482c3776528beac1d97d444f6e91f203a2015"
 "checksum target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c63f48baada5c52e65a29eef93ab4f8982681b67f9e8d29c7b05abcfec2b9ffe"
@@ -4790,7 +4798,7 @@ dependencies = [
 "checksum toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "758664fc71a3a69038656bee8b6be6477d2a6c315a6b81f7081f591bffa4111f"
 "checksum toolshed 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "450441e131c7663af72e63a33c02a6a1fbaaa8601dc652ed6757813bb55aeec7"
 "checksum trace-time 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dbe82f2f0bf1991e163e757baf044282823155dd326e70f44ce2186c3c320cc9"
-"checksum transaction-pool 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f8d8bd3123931aa6e49dd03bc8a2400490e14701d779458d1f1fff1f04c6f666"
+"checksum transaction-pool 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "454adc482e32785c3beab9415dd0f3c689f29cc2d16717eb62f6a784d53544b4"
 "checksum transient-hashmap 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "aeb4b191d033a35edfce392a38cdcf9790b6cebcb30fa690c312c29da4dc433e"
 "checksum trezor-sys 1.0.0 (git+https://github.com/paritytech/trezor-sys)" = "<none>"
 "checksum trie-db 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3c7319e28ca295f27359d944a682f7f65b419158bf1590c92cadc0000258d788"
@@ -4809,6 +4817,7 @@ dependencies = [
 "checksum unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
 "checksum unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
+"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
 "checksum untrusted 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "55cd1f4b4e96b46aeb8d4855db4a7a9bd96eeeb5c6a1ab54593328761642ce2f"
 "checksum url 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2a321979c09843d272956e73700d12c4e7d3d92b2ee112b31548aef0d4efc5a6"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 description = "Parity Ethereum client"
 name = "parity-ethereum"
 # NOTE Make sure to update util/version/Cargo.toml as well
-version = "2.5.5"
+version = "2.5.8"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]

--- a/README.md
+++ b/README.md
@@ -7,6 +7,24 @@
 <p align="center"><a href="https://gitlab.parity.io/parity/parity-ethereum/commits/master" target="_blank"><img src="https://gitlab.parity.io/parity/parity-ethereum/badges/master/build.svg" /></a>
 <a href="https://www.gnu.org/licenses/gpl-3.0.en.html" target="_blank"><img src="https://img.shields.io/badge/license-GPL%20v3-green.svg" /></a></p>

+## Table of Contents
+
+1. [Description](#chapter-001)
+2. [Technical Overview](#chapter-002)
+3. [Building](#chapter-003)<br>
+  3.1 [Building Dependencies](#chapter-0031)<br>
+  3.2 [Building from Source Code](#chapter-0032)<br>
+  3.3 [Simple One-Line Installer for Mac and Linux](#chapter-0033)<br>
+  3.4 [Starting Parity Ethereum](#chapter-0034)
+4. [Documentation](#chapter-004)
+5. [Toolchain](#chapter-005)
+6. [Community](#chapter-006)
+7. [Contributing](#chapter-007)
+8. [License](#chapter-008)
+
+
+## 1. Description <a id="chapter-001"></a>
+
 **Built for mission-critical use**: Miners, service providers, and exchanges need fast synchronisation and maximum uptime. Parity Ethereum provides the core infrastructure essential for speedy and reliable services.

 - Clean, modular codebase for easy customisation
@@ -15,7 +33,7 @@
 - Synchronise in hours, not days with Warp Sync
 - Modular for light integration into your service or product

-## Technical Overview
+## 2. Technical Overview <a id="chapter-002"></a>

 Parity Ethereum's goal is to be the fastest, lightest, and most secure Ethereum client. We are developing Parity Ethereum using the sophisticated and cutting-edge **Rust programming language**. Parity Ethereum is licensed under the GPLv3 and can be used for all your Ethereum needs.

@@ -25,7 +43,9 @@ If you run into problems while using Parity Ethereum, check out the [wiki for do

 Parity Ethereum's current beta-release is 2.1. You can download it at [the releases page](https://github.com/paritytech/parity-ethereum/releases) or follow the instructions below to build from source. Please, mind the [CHANGELOG.md](CHANGELOG.md) for a list of all changes between different versions.

-## Build Dependencies
+## 3. Building <a id="chapter-003"></a>
+
+### 3.1 Build Dependencies <a id="chapter-0031"></a>

 Parity Ethereum requires **latest stable Rust version** to build.

@@ -58,7 +78,7 @@ Once you have `rustup` installed, then you need to install:

 Make sure that these binaries are in your `PATH`. After that, you should be able to build Parity Ethereum from source.

-## Build from Source Code
+### 3.2 Build from Source Code <a id="chapter-0032"></a>

 ```bash
 # download Parity Ethereum code
@@ -95,7 +115,7 @@ or
 $ git checkout beta
 ```

-## Simple One-Line Installer for Mac and Linux
+### 3.3 Simple One-Line Installer for Mac and Linux <a id="chapter-0033"></a>

 ```bash
 bash <(curl https://get.parity.io -L)
@@ -107,9 +127,9 @@ The one-line installer always defaults to the latest beta release. To install a
 bash <(curl https://get.parity.io -L) -r stable
 ```

-## Start Parity Ethereum
+### 3.4 Starting Parity Ethereum <a id="chapter-0034"></a>

-### Manually
+#### Manually

 To start Parity Ethereum manually, just run

@@ -119,7 +139,7 @@ $ ./target/release/parity

 so Parity Ethereum begins syncing the Ethereum blockchain.

-### Using `systemd` service file
+#### Using `systemd` service file

 To start Parity Ethereum as a regular user using `systemd` init:

@@ -128,17 +148,203 @@ To start Parity Ethereum as a regular user using `systemd` init:
 2. Copy release to bin folder, write `sudo install ./target/release/parity /usr/bin/parity`
 3. To configure Parity Ethereum, write a `/etc/parity/config.toml` config file, see [Configuring Parity Ethereum](https://paritytech.github.io/wiki/Configuring-Parity) for details.

-## Parity Ethereum toolchain
+## 4. Documentation <a id="chapter-004"></a>
+
+Official website: https://parity.io
+
+Be sure to [check out our wiki](https://wiki.parity.io) for more information.
+
+### Viewing documentation for Parity Ethereum packages
+
+You can generate documentation for Parity Ethereum Rust packages that automatically opens in your web browser using [rustdoc with Cargo](https://doc.rust-lang.org/rustdoc/what-is-rustdoc.html#using-rustdoc-with-cargo) (of the The Rustdoc Book), by running the the following commands:
+
+* **All** packages
+  ```
+  cargo doc --open
+  ```
+
+* Specific package
+  ```
+  cargo doc --package <spec> --open
+  ```
+
+Replacing `<spec>` with one of the following from the details section below (i.e. `cargo doc --package parity-ethereum --open`):
+
+<details><p>
+
+* Parity Ethereum (EthCore) Client Application
+  ```bash
+  parity-ethereum
+  ```
+* Parity Ethereum Account Management, Key Management Tool, and Keys Generator
+  ```bash
+  ethcore-accounts, ethkey-cli, ethstore, ethstore-cli
+  ```
+* Parity Chain Specification
+  ```bash
+  chainspec
+  ```
+* Parity CLI Signer Tool & RPC Client
+  ```bash
+  cli-signer parity-rpc-client
+  ```
+* Parity Ethereum Ethash & ProgPoW Implementations
+  ```bash
+  ethash
+  ```
+* Parity (EthCore) Library
+  ```bash
+  ethcore
+  ```
+  * Parity Ethereum Blockchain Database, Test Generator, Configuration,
+Caching, Importing Blocks, and Block Information
+    ```bash
+    ethcore-blockchain
+    ```
+  * Parity Ethereum (EthCore) Contract Calls and Blockchain Service & Registry Information
+    ```bash
+    ethcore-call-contract
+    ```
+  * Parity Ethereum (EthCore) Database Access & Utilities, Database Cache Manager
+    ```bash
+    ethcore-db
+    ```
+  * Parity Ethereum Virtual Machine (EVM) Rust Implementation
+    ```bash
+    evm
+    ```
+  * Parity Ethereum (EthCore) Light Client Implementation
+    ```bash
+    ethcore-light
+    ```
+  * Parity Smart Contract based Node Filter, Manage Permissions of Network Connections
+    ```bash
+    node-filter
+    ```
+  * Parity Private Transactions
+    ```bash
+    ethcore-private-tx
+    ```
+  * Parity Ethereum (EthCore) Client & Network Service Creation & Registration with the I/O Subsystem
+    ```bash
+    ethcore-service
+    ```
+  * Parity Ethereum (EthCore) Blockchain Synchronization
+    ```bash
+    ethcore-sync
+    ```
+  * Parity Ethereum Common Types
+    ```bash
+    common-types
+    ```
+  * Parity Ethereum Virtual Machines (VM) Support Library
+    ```bash
+    vm
+    ```
+  * Parity Ethereum WASM Interpreter
+    ```bash
+    wasm
+    ```
+  * Parity Ethereum WASM Test Runner
+    ```bash
+    pwasm-run-test
+    ```
+  * Parity EVM Implementation
+    ```bash
+    evmbin
+    ```
+  * Parity Ethereum IPFS-compatible API
+    ```bash
+    parity-ipfs-api
+    ```
+  * Parity Ethereum JSON Deserialization
+    ```bash
+    ethjson
+    ```
+  * Parity Ethereum State Machine Generalization for Consensus Engines
+    ```bash
+    parity-machine
+    ```
+* Parity Ethereum (EthCore) Miner Interface
+  ```bash
+  ethcore-miner parity-local-store price-info ethcore-stratum using_queue
+  ```
+* Parity Ethereum (EthCore) Logger Implementation
+  ```bash
+  ethcore-logger
+  ```
+* C bindings library for the Parity Ethereum client
+  ```bash
+  parity-clib
+  ```
+* Parity Ethereum JSON-RPC Servers
+  ```bash
+  parity-rpc
+  ```
+* Parity Ethereum (EthCore) Secret Store
+  ```bash
+  ethcore-secretstore
+  ```
+* Parity Updater Service
+  ```bash
+  parity-updater parity-hash-fetch
+  ```
+* Parity Core Libraries (Parity Util)
+  ```bash
+  ethcore-bloom-journal blooms-db dir eip-712 fake-fetch fastmap fetch ethcore-io
+  journaldb keccak-hasher len-caching-lock macros memory-cache memzero
+  migration-rocksdb ethcore-network ethcore-network-devp2p panic_hook
+  patricia-trie-ethereum registrar rlp_compress rlp_derive parity-runtime stats
+  time-utils triehash-ethereum unexpected parity-version
+  ```
+* Parity Whisper Protocol Implementation
+  ```bash
+  parity-whisper whisper-cli
+  ```
+
+</p></details>
+
+### Contributing to documentation for Parity Ethereum packages
+
+[Document source code](https://doc.rust-lang.org/1.9.0/book/documentation.html) for Parity Ethereum packages by annotating the source code with documentation comments.
+
+Example (generic documentation comment):
+```markdown
+/// Summary
+///
+/// Description
+///
+/// # Panics
+///
+/// # Errors
+///
+/// # Safety
+///
+/// # Examples
+///
+/// Summary of Example 1
+///
+/// ```rust
+/// // insert example 1 code here for use with documentation as tests
+/// ```
+///
+```
+
+## 5. Toolchain <a id="chapter-005"></a>

 In addition to the Parity Ethereum client, there are additional tools in this repository available:

- [evmbin](https://github.com/paritytech/parity-ethereum/blob/master/evmbin/) - EVM implementation for Parity Ethereum.
- [ethabi](https://github.com/paritytech/ethabi) - Parity Ethereum function calls encoding.
- [ethstore](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethstore) - Parity Ethereum key management.
- [ethkey](https://github.com/paritytech/parity-ethereum/blob/master/accounts/ethkey) - Parity Ethereum keys generator.
- [whisper](https://github.com/paritytech/parity-ethereum/blob/master/whisper/) - Implementation of Whisper-v2 PoC.
+- [evmbin](./evmbin) - Parity Ethereum EVM Implementation.
+- [ethstore](./accounts/ethstore) - Parity Ethereum Key Management.
+- [ethkey](./accounts/ethkey) - Parity Ethereum Keys Generator.
+- [whisper](./whisper) - Parity Ethereum Whisper-v2 PoC Implementation.

-## Join the chat!
+The following tool is available in a separate repository:
+- [ethabi](https://github.com/paritytech/ethabi) - Parity Ethereum Encoding of Function Calls. [Docs here](https://crates.io/crates/ethabi)
+
+## 6. Community <a id="chapter-006"></a>
+
+### Join the chat!

 Questions? Get in touch with us on Gitter:
 [![Gitter: Parity](https://img.shields.io/badge/gitter-parity-4AB495.svg)](https://gitter.im/paritytech/parity)
@@ -149,8 +355,14 @@ Questions? Get in touch with us on Gitter:
 Alternatively, join our community on Matrix:
 [![Riot: +Parity](https://img.shields.io/badge/riot-%2Bparity%3Amatrix.parity.io-orange.svg)](https://riot.im/app/#/group/+parity:matrix.parity.io)

-## Documentation
+## 7. Contributing <a id="chapter-007"></a>

-Official website: https://parity.io
+An introduction has been provided in the ["So You Want to be a Core Developer" presentation slides by Hernando Castano](http://tiny.cc/contrib-to-parity-eth). Additional guidelines are provided in [CONTRIBUTING](./.github/CONTRIBUTING.md).

-Be sure to [check out our wiki](https://wiki.parity.io) for more information.
+### Contributor Code of Conduct
+
+[CODE_OF_CONDUCT](./.github/CODE_OF_CONDUCT.md)
+
+## 8. License <a id="chapter-008"></a>
+
+[LICENSE](./LICENSE)
--- a/accounts/Cargo.toml
+++ b/accounts/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Account management for Parity Ethereum"
+description = "Parity Ethereum Account Management"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-accounts"
--- a/accounts/ethkey/Cargo.toml
+++ b/accounts/ethkey/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
+description = "Parity Ethereum Keys Generator"
 name = "ethkey"
 version = "0.3.0"
 authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
-byteorder = "1.0"
 edit-distance = "2.0"
 parity-crypto = "0.3.0"
 eth-secp256k1 = { git = "https://github.com/paritytech/rust-secp256k1" }
@@ -12,7 +12,7 @@ ethereum-types = "0.4"
 lazy_static = "1.0"
 log = "0.4"
 memzero = { path = "../../util/memzero" }
-parity-wordlist = "1.2"
+parity-wordlist = "1.3"
 quick-error = "1.2.2"
 rand = "0.4"
 rustc-hex = "1.0"
--- a/accounts/ethkey/README.md
+++ b/accounts/ethkey/README.md
@@ -5,7 +5,7 @@ Parity Ethereum keys generator.
 ### Usage

 ```
-Parity Ethereum keys generator.
+Parity Ethereum Keys Generator.
  Copyright 2015-2019 Parity Technologies (UK) Ltd.

 Usage:
--- a/accounts/ethkey/cli/Cargo.toml
+++ b/accounts/ethkey/cli/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Keys Generator CLI"
 name = "ethkey-cli"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
@@ -8,7 +9,7 @@ docopt = "1.0"
 env_logger = "0.5"
 ethkey = { path = "../" }
 panic_hook = { path = "../../../util/panic-hook" }
-parity-wordlist="1.2"
+parity-wordlist="1.3"
 rustc-hex = "1.0"
 serde = "1.0"
 serde_derive = "1.0"
--- a/accounts/ethkey/src/extended.rs
+++ b/accounts/ethkey/src/extended.rs
@@ -35,9 +35,8 @@ impl Label for u32 {
 	fn len() -> usize { 4 }

 	fn store(&self, target: &mut [u8]) {
-		use byteorder::{BigEndian, ByteOrder};
-
-		BigEndian::write_u32(&mut target[0..4], *self);
+		let bytes = self.to_be_bytes();
+		target[0..4].copy_from_slice(&bytes);
 	}
 }

--- a/accounts/ethkey/src/lib.rs
+++ b/accounts/ethkey/src/lib.rs
@@ -16,7 +16,6 @@

 // #![warn(missing_docs)]

-extern crate byteorder;
 extern crate edit_distance;
 extern crate parity_crypto;
 extern crate ethereum_types;
--- a/accounts/ethstore/Cargo.toml
+++ b/accounts/ethstore/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Key Management"
 name = "ethstore"
 version = "0.2.1"
 authors = ["Parity Technologies <admin@parity.io>"]
@@ -20,7 +21,7 @@ parity-crypto = "0.3.0"
 ethereum-types = "0.4"
 dir = { path = "../../util/dir" }
 smallvec = "0.6"
-parity-wordlist = "1.0"
+parity-wordlist = "1.3"
 tempdir = "0.3"
 lazy_static = "1.2.0"

--- a/accounts/ethstore/cli/Cargo.toml
+++ b/accounts/ethstore/cli/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Key Management CLI"
 name = "ethstore-cli"
 version = "0.1.1"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/chainspec/Cargo.toml
+++ b/chainspec/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Chain Specification"
 name = "chainspec"
 version = "0.1.0"
 authors = ["Marek Kotewicz <marek@parity.io>"]
--- a/cli-signer/Cargo.toml
+++ b/cli-signer/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
-authors = ["Parity <admin@parity.io>"]
-description = "Parity Cli Tool"
+description = "Parity Ethereum CLI Signer Tool"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "cli-signer"
 version = "1.4.0"
+authors = ["Parity <admin@parity.io>"]

 [dependencies]
 ethereum-types = "0.4"
--- a/cli-signer/rpc-client/Cargo.toml
+++ b/cli-signer/rpc-client/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
-authors = ["Parity <admin@parity.io>"]
-description = "Parity Rpc Client"
+description = "Parity Ethereum RPC Client"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "parity-rpc-client"
 version = "1.4.0"
+authors = ["Parity <admin@parity.io>"]

 [dependencies]
 ethereum-types = "0.4"
--- a/docs/CHANGELOG-2.4.md
+++ b/docs/CHANGELOG-2.4.md
@@ -0,0 +1,128 @@
+## Parity-Ethereum [v2.4.9](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.9)
+
+Parity Ethereum v2.4.9-stable is a security update which addresses servo/rust-smallvec#148
+
+The full list of included changes:
+
+* cargo update -p smallvec ([#10822](https://github.com/paritytech/parity-ethereum/pull/10822))
+
+## Parity-Ethereum [v2.4.8](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.8)
+
+Parity-Ethereum 2.4.8-stable is a bugfix release that improves performance and stability.
+
+* Blockchain: fix reset chain
+* State tests: treat empty accounts the same as non-existant accounts (EIP 1052)
+* Aura: fix Timestamp Overflow
+* Networking: support discovery-only peers (geth bootnodes)
+* Snapshotting: fix unclean shutdown while snappshotting is under way
+
+The full list of included changes:
+
+* ethcore/res: activate atlantis classic hf on block 8772000 ([#10766](https://github.com/paritytech/parity-ethereum/pull/10766))
+* fix docker tags for publishing ([#10741](https://github.com/paritytech/parity-ethereum/pull/10741))
+* Reset blockchain properly ([#10669](https://github.com/paritytech/parity-ethereum/pull/10669))
+* adds rpc error message for --no-ancient-blocks ([#10608](https://github.com/paritytech/parity-ethereum/pull/10608))
+* Treat empty account the same as non-exist accounts in EIP-1052 ([#10775](https://github.com/paritytech/parity-ethereum/pull/10775))
+* fix: aura don't add `SystemTime::now()` ([#10720](https://github.com/paritytech/parity-ethereum/pull/10720))
+* DevP2p: Get node IP address and udp port from Socket, if not included in PING packet ([#10705](https://github.com/paritytech/parity-ethereum/pull/10705))
+* Revert "fix: aura don't add `SystemTime::now()` ([#10720](https://github.com/paritytech/parity-ethereum/pull/10720))"
+* Add a way to signal shutdown to snapshotting threads ([#10744](https://github.com/paritytech/parity-ethereum/pull/10744))
+
+## Parity-Ethereum [v2.4.7](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.7)
+
+Parity-Ethereum 2.4.7-stable is a bugfix release that improves performance and stability.
+
+Among others, it enables the _Atlantis_ hardfork on **Morden** and **Kotti** Classic networks.
+
+The full list of included changes:
+
+* [CI] allow cargo audit to fail ([#10676](https://github.com/paritytech/parity-ethereum/pull/10676))
+* new image ([#10673](https://github.com/paritytech/parity-ethereum/pull/10673))
+* Update publishing ([#10644](https://github.com/paritytech/parity-ethereum/pull/10644))
+* enable lto for release builds ([#10717](https://github.com/paritytech/parity-ethereum/pull/10717))
+* Use RUSTFLAGS to set the optimization level ([#10719](https://github.com/paritytech/parity-ethereum/pull/10719))
+* ethcore: enable ECIP-1054 for classic ([#10731](https://github.com/paritytech/parity-ethereum/pull/10731))
+
+## Parity-Ethereum [v2.4.6](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.6)
+
+Parity-Ethereum 2.4.6-stable is a bugfix release that improves performance and stability.
+
+Among others, it enables the Petersburg hardfork on **Rinkeby** and **POA-Core** Network, as well as the **Kovan** Network community hardfork.
+
+The full list of included changes:
+
+* ci: publish docs debug ([#10638](https://github.com/paritytech/parity-ethereum/pull/10638))
+
+## Parity-Ethereum [v2.4.5](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.5)
+
+Parity-Ethereum 2.4.5-stable is a bugfix release that improves performance and stability. This release improves memory optimizations around timestamp handling and stabilizes the 2.4 release branch.
+
+As of today, Parity-Ethereum 2.3 reaches end of life and everyone is encouraged to upgrade.
+
+## Parity-Ethereum [v2.4.4](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.4)
+
+Parity-Ethereum 2.4.4-beta is a bugfix release that improves performance and stability. This patch release removes the dead chain configs for Easthub and Ethereum Social.
+
+The full list of included changes:
+
+* fix(rpc-types): replace uint and hash with `ethereum_types v0.4` ([#10217](https://github.com/paritytech/parity-ethereum/pull/10217))
+* chore(bump ethereum-types) ([#10396](https://github.com/paritytech/parity-ethereum/pull/10396))
+* fix(light eth_gasPrice): ask network if not in cache ([#10535](https://github.com/paritytech/parity-ethereum/pull/10535))
+* fix(light account response): update `tx_queue` ([#10545](https://github.com/paritytech/parity-ethereum/pull/10545))
+* fix(bump dependencies) ([#10540](https://github.com/paritytech/parity-ethereum/pull/10540))
+* tx-pool: check transaction readiness before replacing ([#10526](https://github.com/paritytech/parity-ethereum/pull/10526))
+* fix #10390 ([#10391](https://github.com/paritytech/parity-ethereum/pull/10391))
+* private-tx: replace error_chain ([#10510](https://github.com/paritytech/parity-ethereum/pull/10510))
+
+## Parity-Ethereum [v2.4.3](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.3)
+
+Parity-Ethereum 2.4.3-beta is a bugfix release that improves performance and stability. This patch release contains a critical bug fix where serving light clients previously led to client crashes. Upgrading is highly recommended.
+
+The full list of included changes:
+
+* Add additional request tests ([#10503](https://github.com/paritytech/parity-ethereum/pull/10503))
+
+## Parity-Ethereum [v2.4.2](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.2)
+
+Parity-Ethereum 2.4.2-beta is a bugfix release that improves performance and stability.
+
+The full list of included changes:
+
+* Сaching through docker volume ([#10477](https://github.com/paritytech/parity-ethereum/pull/10477))
+* fix win&mac build ([#10486](https://github.com/paritytech/parity-ethereum/pull/10486))
+* fix(extract `timestamp_checked_add` as lib) ([#10383](https://github.com/paritytech/parity-ethereum/pull/10383))
+
+## Parity-Ethereum [v2.4.1](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.1)
+
+Parity-Ethereum 2.4.1-beta is a bugfix release that improves performance and stability.
+
+The full list of included changes:
+
+* Implement parity_versionInfo & parity_setChain on LC; fix parity_setChain ([#10312](https://github.com/paritytech/parity-ethereum/pull/10312))
+* CI publish to aws ([#10446](https://github.com/paritytech/parity-ethereum/pull/10446))
+* CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))
+* Revert "CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))" (#10456)
+* Revert "CI aws git checkout ([#10451](https://github.com/paritytech/parity-ethereum/pull/10451))"
+* Tests parallelized ([#10452](https://github.com/paritytech/parity-ethereum/pull/10452))
+* Ensure static validator set changes are recognized ([#10467](https://github.com/paritytech/parity-ethereum/pull/10467))
+
+## Parity-Ethereum [v2.4.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.0)
+
+Parity-Ethereum 2.4.0-beta is our trifortnightly minor version release coming with a lot of new features as well as bugfixes and performance improvements.
+
+Notable changes:
+- Account management is now deprecated ([#10213](https://github.com/paritytech/parity-ethereum/pull/10213))
+- Local accounts can now be specified via CLI ([#9960](https://github.com/paritytech/parity-ethereum/pull/9960))
+- Chains can now be reset to a particular block via CLI ([#9782](https://github.com/paritytech/parity-ethereum/pull/9782))
+- Ethash now additionally implements ProgPoW ([#9762](https://github.com/paritytech/parity-ethereum/pull/9762)) 
+- The `eip1283DisableTransition` flag was added to revert EIP-1283 ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
+
+The full list of included changes:
+
+* revert some changes, could be buggy ([#10399](https://github.com/paritytech/parity-ethereum/pull/10399))
+* 10000 > 5000 ([#10422](https://github.com/paritytech/parity-ethereum/pull/10422))
+* fix panic when logging directory does not exist, closes #10420 ([#10424](https://github.com/paritytech/parity-ethereum/pull/10424))
+* fix underflow in pip, closes #10419 ([#10423](https://github.com/paritytech/parity-ethereum/pull/10423))
+* ci: clean up gitlab-ci.yml leftovers from previous merge ([#10429](https://github.com/paritytech/parity-ethereum/pull/10429))
+* Update hardcoded headers for Foundation, Ropsten, Kovan and Classic ([#10417](https://github.com/paritytech/parity-ethereum/pull/10417))
+
--- a/ethash/Cargo.toml
+++ b/ethash/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Ethash & ProgPoW Implementations"
 name = "ethash"
 version = "1.12.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/ethcore/Cargo.toml
+++ b/ethcore/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Ethcore library"
+description = "Parity Ethereum (EthCore) Library"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore"
@@ -12,7 +12,8 @@ blooms-db = { path = "../util/blooms-db", optional = true }
 bn = { git = "https://github.com/paritytech/bn", default-features = false }
 byteorder = "1.0"
 common-types = { path = "types" }
-crossbeam = "0.4"
+crossbeam-utils = "0.6"
+eip-152 = { version = "0.1", path = "../util/EIP-152" }
 env_logger = { version = "0.5", optional = true }
 error-chain = { version = "0.12", default-features = false }
 ethabi = "6.0"
@@ -55,7 +56,7 @@ parking_lot = "0.7"
 trie-db = "0.11.0"
 patricia-trie-ethereum = { path = "../util/patricia-trie-ethereum" }
 rand = "0.4"
-rayon = "1.0"
+rayon = "1.1"
 rlp = { version = "0.3.0", features = ["ethereum"] }
 rlp_derive = { path = "../util/rlp-derive" }
 rustc-hex = "1.0"
@@ -77,6 +78,7 @@ criterion = "0.2"
 env_logger = "0.5"
 ethcore-accounts = { path = "../accounts" }
 fetch = { path = "../util/fetch" }
+hex-literal = "0.2.1"
 kvdb-rocksdb = "0.1.3"
 parity-runtime = { path = "../util/runtime" }
 rlp_compress = { path = "../util/rlp-compress" }
--- a/ethcore/blockchain/Cargo.toml
+++ b/ethcore/blockchain/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Ethcore blockchain database"
+description = "Parity Ethereum Blockchain Database, Test Generator, Configuration, Caching, Importing Blocks, and Block Information"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-blockchain"
@@ -8,26 +8,28 @@ authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"

 [dependencies]
-ansi_term = "0.10"
+ansi_term = "0.11"
 blooms-db = { path = "../../util/blooms-db" }
 common-types = { path = "../types" }
 ethcore-db = { path = "../db" }
 ethereum-types = "0.4"
 heapsize = "0.4"
 itertools = "0.5"
+keccak-hash = "0.1"
 kvdb = "0.1"
 log = "0.4"
 parity-bytes = "0.1"
 parking_lot = "0.7"
-rayon = "1.0"
+rand = "0.6"
+rayon = "1.1"
 rlp = { version = "0.3.0", features = ["ethereum"] }
 rlp_compress = { path = "../../util/rlp-compress" }
 rlp_derive = { path = "../../util/rlp-derive" }
+triehash-ethereum = { version = "0.2",  path = "../../util/triehash-ethereum" }

 [dev-dependencies]
 env_logger = "0.5"
 ethkey = { path = "../../accounts/ethkey" }
-keccak-hash = "0.1"
 rustc-hex = "1.0"
 tempdir = "0.3"
 kvdb-memorydb = "0.1"
--- a/ethcore/blockchain/src/blockchain.rs
+++ b/ethcore/blockchain/src/blockchain.rs
@@ -713,6 +713,10 @@ impl BlockChain {
 	///
 	/// If the tree route verges into pruned or unknown blocks,
 	/// `None` is returned.
+	///
+	/// `is_from_route_finalized` returns whether the `from` part of the
+	/// route contains a finalized block. This only holds if the two parts (from
+	/// and to) are on different branches, ie. on 2 different forks.
 	pub fn tree_route(&self, from: H256, to: H256) -> Option<TreeRoute> {
 		let mut from_branch = vec![];
 		let mut is_from_route_finalized = false;
@@ -726,9 +730,9 @@ impl BlockChain {
 		// reset from && to to the same level
 		while from_details.number > to_details.number {
 			from_branch.push(current_from);
+			is_from_route_finalized = is_from_route_finalized || from_details.is_finalized;
 			current_from = from_details.parent.clone();
 			from_details = self.block_details(&from_details.parent)?;
-			is_from_route_finalized = is_from_route_finalized || from_details.is_finalized;
 		}

 		while to_details.number > from_details.number {
@@ -742,9 +746,9 @@ impl BlockChain {
 		// move to shared parent
 		while current_from != current_to {
 			from_branch.push(current_from);
+			is_from_route_finalized = is_from_route_finalized || from_details.is_finalized;
 			current_from = from_details.parent.clone();
 			from_details = self.block_details(&from_details.parent)?;
-			is_from_route_finalized = is_from_route_finalized || from_details.is_finalized;

 			to_branch.push(current_to);
 			current_to = to_details.parent.clone();
@@ -2491,4 +2495,74 @@ mod tests {
 			assert_eq!(bc.epoch_transition_for(fork_hash).unwrap().block_number, 0);
 		}
 	}
+
+	#[test]
+	fn tree_rout_with_finalization() {
+		let genesis = BlockBuilder::genesis();
+		let a = genesis.add_block();
+		// First branch
+		let a1 = a.add_block_with_random_transactions();
+		let a2 = a1.add_block_with_random_transactions();
+		let a3 = a2.add_block_with_random_transactions();
+		// Second branch
+		let b1 = a.add_block_with_random_transactions();
+		let b2 = b1.add_block_with_random_transactions();
+
+		let a_hash = a.last().hash();
+		let a1_hash = a1.last().hash();
+		let a2_hash = a2.last().hash();
+		let a3_hash = a3.last().hash();
+		let b2_hash = b2.last().hash();
+
+		let bootstrap_chain = |blocks: Vec<&BlockBuilder>| {
+			let db = new_db();
+			let bc = new_chain(genesis.last().encoded(), db.clone());
+			let mut batch = db.key_value().transaction();
+			for block in blocks {
+				insert_block_batch(&mut batch, &bc, block.last().encoded(), vec![]);
+				bc.commit();
+			}
+			db.key_value().write(batch).unwrap();
+			(db, bc)
+		};
+
+		let mark_finalized = |block_hash: H256, db: &Arc<dyn BlockChainDB>, bc: &BlockChain| {
+			let mut batch = db.key_value().transaction();
+			bc.mark_finalized(&mut batch, block_hash).unwrap();
+			bc.commit();
+			db.key_value().write(batch).unwrap();
+		};
+
+		// Case 1: fork, with finalized common ancestor
+		{
+			let (db, bc) = bootstrap_chain(vec![&a, &a1, &a2, &a3, &b1, &b2]);
+			assert_eq!(bc.best_block_hash(), a3_hash);
+			assert_eq!(bc.block_hash(2).unwrap(), a1_hash);
+
+			mark_finalized(a_hash, &db, &bc);
+			assert!(!bc.tree_route(a3_hash, b2_hash).unwrap().is_from_route_finalized);
+			assert!(!bc.tree_route(b2_hash, a3_hash).unwrap().is_from_route_finalized);
+		}
+
+		// Case 2: fork with a finalized block on a branch
+		{
+			let (db, bc) = bootstrap_chain(vec![&a, &a1, &a2, &a3, &b1, &b2]);
+			assert_eq!(bc.best_block_hash(), a3_hash);
+			assert_eq!(bc.block_hash(2).unwrap(), a1_hash);
+
+			mark_finalized(a2_hash, &db, &bc);
+			assert!(bc.tree_route(a3_hash, b2_hash).unwrap().is_from_route_finalized);
+			assert!(!bc.tree_route(b2_hash, a3_hash).unwrap().is_from_route_finalized);
+		}
+
+		// Case 3: no-fork, with a finalized block
+		{
+			let (db, bc) = bootstrap_chain(vec![&a, &a1, &a2]);
+			assert_eq!(bc.best_block_hash(), a2_hash);
+
+			mark_finalized(a1_hash, &db, &bc);
+			assert!(!bc.tree_route(a1_hash, a2_hash).unwrap().is_from_route_finalized);
+			assert!(!bc.tree_route(a2_hash, a1_hash).unwrap().is_from_route_finalized);
+		}
+	}
 }
--- a/ethcore/blockchain/src/generator.rs
+++ b/ethcore/blockchain/src/generator.rs
@@ -21,11 +21,13 @@ use ethereum_types::{U256, H256, Bloom};

 use common_types::encoded;
 use common_types::header::Header;
-use common_types::transaction::SignedTransaction;
+use common_types::transaction::{SignedTransaction, Transaction, Action};
 use common_types::view;
 use common_types::views::BlockView;
+use keccak_hash::keccak;
 use rlp::encode;
 use rlp_derive::RlpEncodable;
+use triehash_ethereum::ordered_trie_root;

 /// Helper structure, used for encoding blocks.
 #[derive(Default, Clone, RlpEncodable)]
@@ -136,6 +138,29 @@ impl BlockBuilder {
 		})
 	}

+	/// Add a block with randomly generated transactions.
+	#[inline]
+	pub fn add_block_with_random_transactions(&self) -> Self {
+		// Maximum of ~50 transactions
+		let count = rand::random::<u8>() as usize / 5;
+		let transactions = std::iter::repeat_with(|| {
+			let data_len = rand::random::<u8>();
+			let data = std::iter::repeat_with(|| rand::random::<u8>())
+				.take(data_len as usize)
+				.collect::<Vec<_>>();
+			Transaction {
+				nonce: 0.into(),
+				gas_price: 0.into(),
+				gas: 100_000.into(),
+				action: Action::Create,
+				value: 100.into(),
+				data,
+			}.sign(&keccak("").into(), None)
+		}).take(count);
+
+		self.add_block_with_transactions(transactions)
+	}
+
 	/// Add a block with given transactions.
 	#[inline]
 	pub fn add_block_with_transactions<T>(&self, transactions: T) -> Self
@@ -166,11 +191,15 @@ impl BlockBuilder {
 			let mut block = Block::default();
 			let metadata = get_metadata();
 			let block_number = parent_number + 1;
+			let transactions = metadata.transactions;
+			let transactions_root = ordered_trie_root(transactions.iter().map(rlp::encode));
+
 			block.header.set_parent_hash(parent_hash);
 			block.header.set_number(block_number);
 			block.header.set_log_bloom(metadata.bloom);
 			block.header.set_difficulty(metadata.difficulty);
-			block.transactions = metadata.transactions;
+			block.header.set_transactions_root(transactions_root);
+			block.transactions = transactions;

 			parent_hash = block.hash();
 			parent_number = block_number;
--- a/ethcore/call-contract/Cargo.toml
+++ b/ethcore/call-contract/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum (EthCore) Contract Calls and Blockchain Service & Registry Information"
 name = "ethcore-call-contract"
 version = "0.1.0"
 license = "GPL-3.0"
--- a/ethcore/evm/Cargo.toml
+++ b/ethcore/evm/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum Virtual Machine (EVM) Rust Implementation"
 name = "evm"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
@@ -19,6 +20,7 @@ num-bigint = "0.2"
 [dev-dependencies]
 rustc-hex = "1.0"
 criterion = "0.2"
+hex-literal = "0.2.0"

 [features]
 evm-debug = []
--- a/ethcore/evm/src/evm.rs
+++ b/ethcore/evm/src/evm.rs
@@ -44,12 +44,18 @@ pub trait Finalize {
 impl Finalize for Result<GasLeft> {
 	fn finalize<E: Ext>(self, ext: E) -> Result<FinalizationResult> {
 		match self {
-			Ok(GasLeft::Known(gas_left)) => Ok(FinalizationResult { gas_left: gas_left, apply_state: true, return_data: ReturnData::empty() }),
-			Ok(GasLeft::NeedsReturn { gas_left, data, apply_state }) => ext.ret(&gas_left, &data, apply_state).map(|gas_left| FinalizationResult {
-				gas_left: gas_left,
-				apply_state: apply_state,
-				return_data: data,
-			}),
+			Ok(GasLeft::Known(gas_left)) => {
+				Ok(FinalizationResult {
+					gas_left,
+					apply_state: true,
+					return_data: ReturnData::empty()
+				})
+			},
+			Ok(GasLeft::NeedsReturn { gas_left, data, apply_state }) => {
+				ext.ret(&gas_left, &data, apply_state).map(|gas_left|
+					FinalizationResult { gas_left, apply_state, return_data: data }
+				)
+			},
 			Err(err) => Err(err),
 		}
 	}
--- a/ethcore/evm/src/factory.rs
+++ b/ethcore/evm/src/factory.rs
@@ -47,7 +47,7 @@ impl Factory {
 	/// for caching jump destinations.
 	pub fn new(evm: VMType, cache_size: usize) -> Self {
 		Factory {
-			evm: evm,
+			evm,
 			evm_cache: Arc::new(SharedCache::new(cache_size)),
 		}
 	}
--- a/ethcore/evm/src/instructions.rs
+++ b/ethcore/evm/src/instructions.rs
@@ -149,6 +149,10 @@ enum_with_from_u8! {
 		DIFFICULTY = 0x44,
 		#[doc = "get the block's gas limit"]
 		GASLIMIT = 0x45,
+		#[doc = "get chain ID"]
+		CHAINID = 0x46,
+		#[doc = "get balance of own account"]
+		SELFBALANCE = 0x47,

 		#[doc = "remove item from stack"]
 		POP = 0x50,
@@ -442,12 +446,7 @@ pub struct InstructionInfo {
 impl InstructionInfo {
 	/// Create new instruction info.
 	pub fn new(name: &'static str, args: usize, ret: usize, tier: GasPriceTier) -> Self {
-		InstructionInfo {
-			name: name,
-			args: args,
-			ret: ret,
-			tier: tier
-		}
+		InstructionInfo { name, args, ret, tier }
 	}
 }

@@ -504,6 +503,8 @@ lazy_static! {
 		arr[NUMBER as usize] = Some(InstructionInfo::new("NUMBER", 0, 1, GasPriceTier::Base));
 		arr[DIFFICULTY as usize] = Some(InstructionInfo::new("DIFFICULTY", 0, 1, GasPriceTier::Base));
 		arr[GASLIMIT as usize] = Some(InstructionInfo::new("GASLIMIT", 0, 1, GasPriceTier::Base));
+		arr[CHAINID as usize] = Some(InstructionInfo::new("CHAINID", 0, 1, GasPriceTier::Base));
+		arr[SELFBALANCE as usize] = Some(InstructionInfo::new("SELFBALANCE", 0, 1, GasPriceTier::Low));
 		arr[POP as usize] = Some(InstructionInfo::new("POP", 1, 0, GasPriceTier::Base));
 		arr[MLOAD as usize] = Some(InstructionInfo::new("MLOAD", 1, 1, GasPriceTier::VeryLow));
 		arr[MSTORE as usize] = Some(InstructionInfo::new("MSTORE", 2, 0, GasPriceTier::VeryLow));
--- a/ethcore/evm/src/interpreter/gasometer.rs
+++ b/ethcore/evm/src/interpreter/gasometer.rs
@@ -121,6 +121,9 @@ impl<Gas: evm::CostType> Gasometer<Gas> {
 				Request::Gas(Gas::from(1))
 			},
 			instructions::SSTORE => {
+				if schedule.eip1706 && self.current_gas <= Gas::from(schedule.call_stipend) {
+					return Err(vm::Error::OutOfGas);
+				}
 				let address = H256::from(stack.peek(0));
 				let newval = stack.peek(1);
 				let val = U256::from(&*ext.storage_at(&address)?);
--- a/ethcore/evm/src/interpreter/mod.rs
+++ b/ethcore/evm/src/interpreter/mod.rs
@@ -119,8 +119,6 @@ enum InstructionResult<Gas> {
 	Trap(TrapKind),
 }

-enum Never {}
-
 /// ActionParams without code, so that it can be feed into CodeReader.
 #[derive(Debug)]
 struct InterpreterParams {
@@ -178,12 +176,6 @@ pub enum InterpreterResult {
 	Trap(TrapKind),
 }

-impl From<vm::Error> for InterpreterResult {
-	fn from(error: vm::Error) -> InterpreterResult {
-		InterpreterResult::Done(Err(error))
-	}
-}
-
 /// Intepreter EVM implementation
 pub struct Interpreter<Cost: CostType> {
 	mem: Vec<u8>,
@@ -294,6 +286,8 @@ impl<Cost: CostType> Interpreter<Cost> {
 			cache, params, reader, informant,
 			valid_jump_destinations, gasometer, stack,
 			done: false,
+			// Overridden in `step_inner` based on
+			// the result of `ext.trace_next_instruction`.
 			do_trace: true,
 			mem: Vec::new(),
 			return_data: ReturnData::empty(),
@@ -314,21 +308,26 @@ impl<Cost: CostType> Interpreter<Cost> {
 		let result = if self.gasometer.is_none() {
 			InterpreterResult::Done(Err(vm::Error::OutOfGas))
 		} else if self.reader.len() == 0 {
-			InterpreterResult::Done(Ok(GasLeft::Known(self.gasometer.as_ref().expect("Gasometer None case is checked above; qed").current_gas.as_u256())))
+			let current_gas = self.gasometer
+				.as_ref()
+				.expect("Gasometer None case is checked above; qed")
+				.current_gas
+				.as_u256();
+			InterpreterResult::Done(Ok(GasLeft::Known(current_gas)))
 		} else {
-			self.step_inner(ext).err().expect("step_inner never returns Ok(()); qed")
+			self.step_inner(ext)
 		};

 		if let &InterpreterResult::Done(_) = &result {
 			self.done = true;
 			self.informant.done();
 		}
-		return result;
+		result
 	}

 	/// Inner helper function for step.
 	#[inline(always)]
-	fn step_inner(&mut self, ext: &mut vm::Ext) -> Result<Never, InterpreterResult> {
+	fn step_inner(&mut self, ext: &mut dyn vm::Ext) -> InterpreterResult {
 		let result = match self.resume_result.take() {
 			Some(result) => result,
 			None => {
@@ -343,22 +342,31 @@ impl<Cost: CostType> Interpreter<Cost> {

 				let instruction = match instruction {
 					Some(i) => i,
-					None => return Err(InterpreterResult::Done(Err(vm::Error::BadInstruction {
+					None => return InterpreterResult::Done(Err(vm::Error::BadInstruction {
 						instruction: opcode
-					}))),
+					})),
 				};

 				let info = instruction.info();
 				self.last_stack_ret_len = info.ret;
-				self.verify_instruction(ext, instruction, info)?;
+				if let Err(e) = self.verify_instruction(ext, instruction, info) {
+					return InterpreterResult::Done(Err(e));
+				};

 				// Calculate gas cost
-				let requirements = self.gasometer.as_mut().expect(GASOMETER_PROOF).requirements(ext, instruction, info, &self.stack, self.mem.size())?;
+				let requirements = match self.gasometer.as_mut().expect(GASOMETER_PROOF).requirements(ext, instruction, info, &self.stack, self.mem.size()) {
+					Ok(t) => t,
+					Err(e) => return InterpreterResult::Done(Err(e)),
+				};
 				if self.do_trace {
 					ext.trace_prepare_execute(self.reader.position - 1, opcode, requirements.gas_cost.as_u256(), Self::mem_written(instruction, &self.stack), Self::store_written(instruction, &self.stack));
 				}
-
-				self.gasometer.as_mut().expect(GASOMETER_PROOF).verify_gas(&requirements.gas_cost)?;
+				if let Err(e) = self.gasometer.as_mut().expect(GASOMETER_PROOF).verify_gas(&requirements.gas_cost) {
+					if self.do_trace {
+						ext.trace_failed();
+					}
+					return InterpreterResult::Done(Err(e));
+				}
 				self.mem.expand(requirements.memory_required_size);
 				self.gasometer.as_mut().expect(GASOMETER_PROOF).current_mem_gas = requirements.memory_total_gas;
 				self.gasometer.as_mut().expect(GASOMETER_PROOF).current_gas = self.gasometer.as_mut().expect(GASOMETER_PROOF).current_gas - requirements.gas_cost;
@@ -367,18 +375,24 @@ impl<Cost: CostType> Interpreter<Cost> {

 				// Execute instruction
 				let current_gas = self.gasometer.as_mut().expect(GASOMETER_PROOF).current_gas;
-				let result = self.exec_instruction(
+				let result = match self.exec_instruction(
 					current_gas, ext, instruction, requirements.provide_gas
-				)?;
-
+				) {
+					Err(x) => {
+						if self.do_trace {
+							ext.trace_failed();
+						}
+						return InterpreterResult::Done(Err(x));
+					},
+					Ok(x) => x,
+				};
 				evm_debug!({ self.informant.after_instruction(instruction) });
-
 				result
 			},
 		};

 		if let InstructionResult::Trap(trap) = result {
-			return Err(InterpreterResult::Trap(trap));
+			return InterpreterResult::Trap(trap);
 		}

 		if let InstructionResult::UnusedGas(ref gas) = result {
@@ -400,28 +414,31 @@ impl<Cost: CostType> Interpreter<Cost> {
 					self.valid_jump_destinations = Some(self.cache.jump_destinations(&self.params.code_hash, &self.reader.code));
 				}
 				let jump_destinations = self.valid_jump_destinations.as_ref().expect("jump_destinations are initialized on first jump; qed");
-				let pos = self.verify_jump(position, jump_destinations)?;
+				let pos = match self.verify_jump(position, jump_destinations) {
+					Ok(x) => x,
+					Err(e) => return InterpreterResult::Done(Err(e))
+				};
 				self.reader.position = pos;
 			},
 			InstructionResult::StopExecutionNeedsReturn {gas, init_off, init_size, apply} => {
 				let mem = mem::replace(&mut self.mem, Vec::new());
-				return Err(InterpreterResult::Done(Ok(GasLeft::NeedsReturn {
+				return InterpreterResult::Done(Ok(GasLeft::NeedsReturn {
 					gas_left: gas.as_u256(),
 					data: mem.into_return_data(init_off, init_size),
 					apply_state: apply
-				})));
+				}));
 			},
 			InstructionResult::StopExecution => {
-				return Err(InterpreterResult::Done(Ok(GasLeft::Known(self.gasometer.as_mut().expect(GASOMETER_PROOF).current_gas.as_u256()))));
+				return InterpreterResult::Done(Ok(GasLeft::Known(self.gasometer.as_mut().expect(GASOMETER_PROOF).current_gas.as_u256())));
 			},
 			_ => {},
 		}

 		if self.reader.position >= self.reader.len() {
-			return Err(InterpreterResult::Done(Ok(GasLeft::Known(self.gasometer.as_mut().expect(GASOMETER_PROOF).current_gas.as_u256()))));
+			return InterpreterResult::Done(Ok(GasLeft::Known(self.gasometer.as_mut().expect(GASOMETER_PROOF).current_gas.as_u256())));
 		}

-		Err(InterpreterResult::Continue)
+		InterpreterResult::Continue
 	}

 	fn verify_instruction(&self, ext: &vm::Ext, instruction: Instruction, info: &InstructionInfo) -> vm::Result<()> {
@@ -433,7 +450,9 @@ impl<Cost: CostType> Interpreter<Cost> {
 			((instruction == instructions::RETURNDATACOPY || instruction == instructions::RETURNDATASIZE) && !schedule.have_return_data) ||
 			(instruction == instructions::REVERT && !schedule.have_revert) ||
 			((instruction == instructions::SHL || instruction == instructions::SHR || instruction == instructions::SAR) && !schedule.have_bitwise_shifting) ||
-			(instruction == instructions::EXTCODEHASH && !schedule.have_extcodehash)
+			(instruction == instructions::EXTCODEHASH && !schedule.have_extcodehash) ||
+			(instruction == instructions::CHAINID && !schedule.have_chain_id) ||
+			(instruction == instructions::SELFBALANCE && !schedule.have_selfbalance)
 		{
 			return Err(vm::Error::BadInstruction {
 				instruction: instruction as u8
@@ -848,6 +867,12 @@ impl<Cost: CostType> Interpreter<Cost> {
 			instructions::GASLIMIT => {
 				self.stack.push(ext.env_info().gas_limit.clone());
 			},
+			instructions::CHAINID => {
+				self.stack.push(ext.chain_id().into())
+			},
+			instructions::SELFBALANCE => {
+				self.stack.push(ext.balance(&self.params.address)?);
+			}

 			// Stack instructions

--- a/ethcore/evm/src/lib.rs
+++ b/ethcore/evm/src/lib.rs
@@ -34,6 +34,8 @@ extern crate log;

 #[cfg(test)]
 extern crate rustc_hex;
+#[cfg(test)]
+extern crate hex_literal;

 pub mod evm;
 pub mod interpreter;
--- a/ethcore/evm/src/tests.rs
+++ b/ethcore/evm/src/tests.rs
@@ -25,6 +25,7 @@ use vm::{self, ActionParams, ActionValue, Ext};
 use vm::tests::{FakeExt, FakeCall, FakeCallType, test_finalize};
 use factory::Factory;
 use vmtype::VMType;
+use hex_literal::hex;

 evm_test!{test_add: test_add_int}
 fn test_add(factory: super::Factory) {
@@ -108,6 +109,32 @@ fn test_origin(factory: super::Factory) {
 	assert_store(&ext, 0, "000000000000000000000000cd1722f2947def4cf144679da39c4c32bdc35681");
 }

+evm_test!{test_selfbalance: test_selfbalance_int}
+fn test_selfbalance(factory: super::Factory) {
+	let own_addr = Address::from_str("1337000000000000000000000000000000000000").unwrap();
+	// 47       SELFBALANCE
+	// 60 ff    PUSH ff
+	// 55       SSTORE
+	let code = hex!("47 60 ff 55").to_vec();
+
+	let mut params = ActionParams::default();
+	params.address = own_addr.clone();
+	params.gas = U256::from(100_000);
+	params.code = Some(Arc::new(code));
+	let mut ext = FakeExt::new_istanbul();
+	ext.balances = {
+		let mut x = HashMap::new();
+		x.insert(own_addr, U256::from(1_025)); // 0x401
+		x
+	};
+	let gas_left = {
+		let vm = factory.create(params, ext.schedule(), ext.depth());
+		test_finalize(vm.exec(&mut ext).ok().unwrap()).unwrap()
+	};
+	assert_eq!(gas_left, U256::from(79_992)); // TODO[dvdplm]: do the sums here, SELFBALANCE-5 + PUSH1-3 + ONEBYTE-4 + SSTORE-?? = 100_000 - 79_992
+	assert_store(&ext, 0xff, "0000000000000000000000000000000000000000000000000000000000000401");
+}
+
 evm_test!{test_sender: test_sender_int}
 fn test_sender(factory: super::Factory) {
 	let address = Address::from_str("0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6").unwrap();
@@ -130,6 +157,27 @@ fn test_sender(factory: super::Factory) {
 	assert_store(&ext, 0, "000000000000000000000000cd1722f2947def4cf144679da39c4c32bdc35681");
 }

+evm_test!{test_chain_id: test_chain_id_int}
+fn test_chain_id(factory: super::Factory) {
+	// 46       CHAINID
+	// 60 00    PUSH 0
+	// 55       SSTORE
+	let code = hex!("46 60 00 55").to_vec();
+
+	let mut params = ActionParams::default();
+	params.gas = U256::from(100_000);
+	params.code = Some(Arc::new(code));
+	let mut ext = FakeExt::new_istanbul().with_chain_id(9);
+
+	let gas_left = {
+		let vm = factory.create(params, ext.schedule(), ext.depth());
+		test_finalize(vm.exec(&mut ext).ok().unwrap()).unwrap()
+	};
+
+	assert_eq!(gas_left, U256::from(79_995));
+	assert_store(&ext, 0, "0000000000000000000000000000000000000000000000000000000000000009");
+}
+
 evm_test!{test_extcodecopy: test_extcodecopy_int}
 fn test_extcodecopy(factory: super::Factory) {
 		// 33 - sender
@@ -262,7 +310,6 @@ fn test_calldataload(factory: super::Factory) {

 	assert_eq!(gas_left, U256::from(79_991));
 	assert_store(&ext, 0, "23ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff23");
-
 }

 evm_test!{test_author: test_author_int}
--- a/ethcore/light/Cargo.toml
+++ b/ethcore/light/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Parity Light Client Implementation"
+description = "Parity Ethereum (EthCore) Light Client Implementation (Block Import IO Service, Blockchain Data Fetching, Light Client Header Chain Storage, Parity Light Protocol (PLP) Provider, Light Transaction Queue, CHT Definitions, Light Client Data Cache), Parity Light Protocol (PLP) Implementation, P2P Network I/O and Event Context Generalization, Peer Error Handling & Punishment, Request Load Timer & Distribution Manager, Pending Request Set Storage, Request Credit Management, Light Client Request Types, Request Chain Builder Utility, On-demand Chain Request Service over LES (for RPCs), ResponseGuard Implementation)"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "ethcore-light"
--- a/ethcore/node-filter/Cargo.toml
+++ b/ethcore/node-filter/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Parity smart network connections"
+description = "Parity Smart Contract based Node Filter, Manage Permissions of Network Connections"
 homepage = "http://parity.io"
 license = "GPL-3.0"
 name = "node-filter"
--- a/ethcore/private-tx/Cargo.toml
+++ b/ethcore/private-tx/Cargo.toml
@@ -36,7 +36,7 @@ serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"
 tiny-keccak = "1.4"
-transaction-pool = "2.0"
+transaction-pool = "2.0.1"
 url = "1"

 [dev-dependencies]
--- a/ethcore/private-tx/src/encryptor.rs
+++ b/ethcore/private-tx/src/encryptor.rs
@@ -60,7 +60,7 @@ pub trait Encryptor: Send + Sync + 'static {
 	) -> Result<Bytes, Error>;
 }

-/// Configurtion for key server encryptor
+/// Configuration for key server encryptor
 #[derive(Default, PartialEq, Debug, Clone)]
 pub struct EncryptorConfig {
 	/// URL to key server
--- a/ethcore/res/authority_round.json
+++ b/ethcore/res/authority_round.json
@@ -46,9 +46,50 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "nonce": "1048576", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "nonce": "1048576", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "balance": "1", "builtin": { "name": "modexp", "activate_at": 0, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "balance": "1", "builtin": { "name": "alt_bn128_add", "activate_at": 0, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "balance": "1", "builtin": { "name": "alt_bn128_mul", "activate_at": 0, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "balance": "1", "builtin": { "name": "alt_bn128_pairing", "activate_at": 0, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
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 }
--- a/ethcore/res/authority_round_block_reward_contract.json
+++ b/ethcore/res/authority_round_block_reward_contract.json
@@ -49,9 +49,50 @@
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--- a/ethcore/res/basic_authority.json
+++ b/ethcore/res/basic_authority.json
@@ -38,9 +38,50 @@
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 }
--- a/ethcore/res/constructor.json
+++ b/ethcore/res/constructor.json
@@ -34,9 +34,50 @@
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 }
--- a/ethcore/res/ethereum/byzantium_test.json
+++ b/ethcore/res/ethereum/byzantium_test.json
@@ -54,8 +54,46 @@
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 	}
 }
--- a/ethcore/res/ethereum/callisto.json
+++ b/ethcore/res/ethereum/callisto.json
@@ -72,9 +72,50 @@
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 		"183394f52b2c8c034835edba3bcececa6f60b5a8": {
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--- a/ethcore/res/ethereum/classic.json
+++ b/ethcore/res/ethereum/classic.json
@@ -3917,10 +3917,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x85d9a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
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-						"word": 0
+					"alt_bn128_const_operations": {
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+						"eip1108_transition_price": 150
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@@ -3929,10 +3930,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x85d9a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
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+					"alt_bn128_const_operations": {
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+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -3941,10 +3943,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x85d9a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
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+						"eip1108_transition_pair": 34000
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 			}
--- a/ethcore/res/ethereum/constantinople_test.json
+++ b/ethcore/res/ethereum/constantinople_test.json
@@ -58,8 +58,46 @@
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 	}
 }
--- a/ethcore/res/ethereum/eip210_test.json
+++ b/ethcore/res/ethereum/eip210_test.json
@@ -46,8 +46,46 @@
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 }
--- a/ethcore/res/ethereum/ellaism.json
+++ b/ethcore/res/ethereum/ellaism.json
@@ -66,8 +66,46 @@
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+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 2000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 2000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 2000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }
--- a/ethcore/res/ethereum/ewc.json
+++ b/ethcore/res/ethereum/ewc.json
--- a/ethcore/res/ethereum/expanse.json
+++ b/ethcore/res/ethereum/expanse.json
@@ -76,9 +76,47 @@
 		"0000000000000000000000000000000000000003": { "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0xC3500", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0xC3500", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0xC3500", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0xC3500", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0xC3500",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0xC3500",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0xC3500",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"bb94f0ceb32257275b2a7a9c094c13e469b4563e": {
 			"balance": "10000000000000000000000000"
 		},
--- a/ethcore/res/ethereum/foundation.json
+++ b/ethcore/res/ethereum/foundation.json
@@ -3921,10 +3921,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x42ae50",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -3933,10 +3934,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x42ae50",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -3945,10 +3947,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x42ae50",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
--- a/ethcore/res/ethereum/goerli.json
+++ b/ethcore/res/ethereum/goerli.json
@@ -125,11 +125,12 @@
 			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_add",
-				"activate_at": "0x0",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -138,11 +139,12 @@
 			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_mul",
-				"activate_at": "0x0",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -151,11 +153,14 @@
 			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_pairing",
-				"activate_at": "0x0",
+				"activate_at": "0x00",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
--- a/ethcore/res/ethereum/kotti.json
+++ b/ethcore/res/ethereum/kotti.json
@@ -117,10 +117,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0xaef49",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -130,10 +131,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0xaef49",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -143,10 +145,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0xaef49",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
--- a/ethcore/res/ethereum/kovan.json
+++ b/ethcore/res/ethereum/kovan.json
@@ -5344,10 +5344,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x4d50f8",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -5356,10 +5357,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x4d50f8",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -5368,10 +5370,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x4d50f8",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
@@ -5382,6 +5387,8 @@
 	},
 	"nodes": [
 		"enode://f6e37b943bad3a78cb8589b1798d30d210ffd39cfcd2c8f2de4f098467fd49c667980100d919da7ca46cd50505d30989abda87f0b9339377de13d6592c22caf8@34.198.49.72:30303",
+		"enode://16898006ba2cd4fa8bf9a3dfe32684c178fa861df144bfc21fe800dc4838a03e342056951fa9fd533dcb0be1219e306106442ff2cf1f7e9f8faa5f2fc1a3aa45@116.203.116.241:30303",
+		"enode://2909846f78c37510cc0e306f185323b83bb2209e5ff4fdd279d93c60e3f365e3c6e62ad1d2133ff11f9fd6d23ad9c3dad73bb974d53a22f7d1ac5b7dea79d0b0@3.217.96.11:30303",
 		"enode://56abaf065581a5985b8c5f4f88bd202526482761ba10be9bfdcd14846dd01f652ec33fde0f8c0fd1db19b59a4c04465681fcef50e11380ca88d25996191c52de@40.71.221.215:30303",
 		"enode://d07827483dc47b368eaf88454fb04b41b7452cf454e194e2bd4c14f98a3278fed5d819dbecd0d010407fc7688d941ee1e58d4f9c6354d3da3be92f55c17d7ce3@52.166.117.77:30303",
 		"enode://38e6e7fd416293ed120d567a2675fe078c0205ab0671abf16982ce969823bd1f3443d590c18b321dfae7dcbe1f6ba98ef8702f255c3c9822a188abb82c53adca@51.77.66.187:30303",
--- a/ethcore/res/ethereum/kovan_wasm_test.json
+++ b/ethcore/res/ethereum/kovan_wasm_test.json
@@ -60,9 +60,47 @@
 		"0x0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0x0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0x0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": 5067000, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0x0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": 5067000, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0x0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": 5067000, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0x0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": 5067000, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0x0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 5067000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 5067000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0x0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 5067000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"0x00521965e7bd230323c423d96c657db5b79d099f": { "balance": "1606938044258990275541962092341162602522202993782792835301376" }
 	},
 	"nodes": [
--- a/ethcore/res/ethereum/mcip3_test.json
+++ b/ethcore/res/ethereum/mcip3_test.json
@@ -120,38 +120,43 @@
 				}
 			}
 		},
-		"0000000000000000000000000000000000000006":{
-			"builtin":{
-				"name":"alt_bn128_add",
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
 				"activate_at":"0x7fffffffffffff",
-				"pricing":{
-					"linear":{
-						"base":500,
-						"word":0
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
 		},
-		"0000000000000000000000000000000000000007":{
-			"builtin":{
-				"name":"alt_bn128_mul",
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
 				"activate_at":"0x7fffffffffffff",
-				"pricing":{
-					"linear":{
-						"base":40000,
-						"word":0
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
 		},
-		"0000000000000000000000000000000000000008":{
-			"builtin":{
-				"name":"alt_bn128_pairing",
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
 				"activate_at":"0x7fffffffffffff",
-				"pricing":{
-					"alt_bn128_pairing":{
-						"base":100000,
-						"pair":80000
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
--- a/ethcore/res/ethereum/mix.json
+++ b/ethcore/res/ethereum/mix.json
@@ -62,9 +62,47 @@
 		"0000000000000000000000000000000000000003": { "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": 3000000, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": 3000000, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": 3000000, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": 3000000, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 3000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 3000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 3000000,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"97c7f4f8f0bbf384578a9f5754ae73f37ff49ec2": { "balance": "55000000000000000000000000" }
 	}
 }
--- a/ethcore/res/ethereum/morden.json
+++ b/ethcore/res/ethereum/morden.json
@@ -90,10 +90,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x4829ba",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -102,10 +103,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x4829ba",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -114,10 +116,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x4829ba",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
--- a/ethcore/res/ethereum/musicoin.json
+++ b/ethcore/res/ethereum/musicoin.json
@@ -128,38 +128,43 @@
 				}
 			}
 		},
-		"0000000000000000000000000000000000000006":{
-			"builtin":{
-				"name":"alt_bn128_add",
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
 				"activate_at":"0x21e88e",
-				"pricing":{
-					"linear":{
-						"base":500,
-						"word":0
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
 		},
-		"0000000000000000000000000000000000000007":{
-			"builtin":{
-				"name":"alt_bn128_mul",
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
 				"activate_at":"0x21e88e",
-				"pricing":{
-					"linear":{
-						"base":40000,
-						"word":0
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
 		},
-		"0000000000000000000000000000000000000008":{
-			"builtin":{
-				"name":"alt_bn128_pairing",
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
 				"activate_at":"0x21e88e",
-				"pricing":{
-					"alt_bn128_pairing":{
-						"base":100000,
-						"pair":80000
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
--- a/ethcore/res/ethereum/poacore.json
+++ b/ethcore/res/ethereum/poacore.json
@@ -51,7 +51,6 @@
 	},
 	"nodes": [
 		"enode://6e3d1b39cbd2a9c4f053a27e68fd90d0bac83691dfdc4a13c59f2555078a71e63c5daaee5a82aa6db500512760a5456f86076bf8bbe8011c27c82ed7d6f5fb26@45.77.140.210:30303",
-		"enode://f4698ad485a027497e1cc992bb5f7cecee2b32a44c47202738d8d0eecfab719541988d0cbcbc5ea94c6c959e5cddeb85fc6ae75fb63dc3bf87cdbe9e6f615e9d@206.156.242.64:30303",
 		"enode://31dffed97f8fed1f34fe66453280a89cbeeda60cf28f6fbb212ebbefd7c7566a02c1c7d5c00bbbb49b9fa8a49f157e0f786f379ca9bcbf2fea24de70d70a22b6@206.156.242.61:30303",
 		"enode://6bdc7553ab2e4914cb47774c1e6d8c8f47ac7c3981891f85f65d06f208ea1bc4d3bf982b330950e0a0cd127efd7145c4df7113159a1d4a06ed722e6c16d0ac6c@45.32.215.190:30303",
 		"enode://872d82a24144bc007658fb6fac0dcdfb9b63aeb05ef563a06d0186f2d1e5ffbfc5c4f1244891a8a86ef70682b9d24382e654b305224883698862e2df647a4d23@45.76.236.247:30303",
@@ -60,10 +59,47 @@
 	],
 	"accounts": {
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x0", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x0", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x0", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x0", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
-
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"0x0000000000000000000000000000000000000001": {
 			"balance": "1",
 			"builtin": {
--- a/ethcore/res/ethereum/poasokol.json
+++ b/ethcore/res/ethereum/poasokol.json
@@ -58,16 +58,54 @@
 		"enode://8e0af07c86ec36590bb6368e7ad0c45b6dc658f5fb66ec68889a614affddda5e021bd513bcf4fb2fae4a3bbe08cf0de84f037cd58478a89665dfce1ded2595c7@34.236.37.74:30303",
 		"enode://f1a5100a81cb73163ae450c584d06b1f644aa4fad4486c6aeb4c384b343c54bb66c744aa5f133af66ea1b25f0f4a454f04878f3e96ee4cd2390c047396d6357b@209.97.158.4:30303",
 		"enode://0d1e0372f63a3f0b82d66635ea101ecc0f6797788a078805cc933dd93e6a22f7c9fa51ab4e2d21da02d04480ef19f3bbb9a2b41dd1c262085d295a354bb8b0f9@18.217.47.209:30303",
-		"enode://ab083db73da15b3995ac9c68035cdb32901835a823cb848fccb672e43dd21f14428706118d6fe5b921d8e741f122f35aad0255bc86807b1d17bcfa1e86e40a14@165.227.37.104:30303",
+		"enode://875e1bd1b98019a5d6d588c23f68534b75462dd6ecbb3dd058221dbf7aa923f0ab782ab93bb82d42edc9996f7f0816a318bdc761e55c02b95e1169cef66f7edc@159.203.24.35:30303",
 		"enode://8e0af07c86ec36590bb6368e7ad0c45b6dc658f5fb66ec68889a614affddda5e021bd513bcf4fb2fae4a3bbe08cf0de84f037cd58478a89665dfce1ded2595c7@34.236.37.74:30303",
 		"enode://182ee200ca134dc4d6390f3d5aadbcd80df0f7f24335830335d142573eacce4eeb919d30e82c5df588034e167e6ba6dd11187502ac9264a71005127f6b146a99@159.203.95.241:30303",
 		"enode://b022ff70b5fcaf9596ae5efed99a8198b4ae0578ee9d17b733609d803a75cef95d3a2a18e50dca9a7c3b26139f158c59eaf8b5fb8d1d331c9a46934a78acabe8@206.189.76.128:30303"
 	],
 	"accounts": {
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x0", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x0", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x0", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x0", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},

 		"0x0000000000000000000000000000000000000001": {
 			"balance": "1",
--- a/ethcore/res/ethereum/rinkeby.json
+++ b/ethcore/res/ethereum/rinkeby.json
@@ -117,40 +117,42 @@
 			}
 		},
 		"0x0000000000000000000000000000000000000006": {
-			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0xfcc25",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
 		},
 		"0x0000000000000000000000000000000000000007": {
-			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0xfcc25",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
 		},
 		"0x0000000000000000000000000000000000000008": {
-			"balance": "0x1",
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0xfcc25",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
--- a/ethcore/res/ethereum/ropsten.json
+++ b/ethcore/res/ethereum/ropsten.json
@@ -2654,7 +2654,7 @@
 		]
 	},
 	"nodes": [
-		"enode://6332792c4a00e3e4ee0926ed89e0d27ef985424d97b6a45bf0f23e51f0dcb5e66b875777506458aea7af6f9e4ffb69f43f3778ee73c81ed9d34c51c4b16b0b0f@52.232.243.152:30303",
+		"enode://d6cb8cba18828397e22e8852324af7e970b57cadbbd94aba6124790d1895728311b1f274e45d44a7a22b4276726903130a11ac2de19af5bc9294998f948eaad4@144.217.72.209:30303",
 		"enode://94c15d1b9e2fe7ce56e458b9a3b672ef11894ddedd0c6f247e0f1d3487f52b66208fb4aeb8179fce6e3a749ea93ed147c37976d67af557508d199d9594c35f09@192.81.208.223:30303",
 		"enode://30b7ab30a01c124a6cceca36863ece12c4f5fa68e3ba9b0b51407ccc002eeed3b3102d20a88f1c1d3c3154e2449317b8ef95090e77b312d5cc39354f86d5d606@52.176.7.10:30303",
 		"enode://865a63255b3bb68023b6bffd5095118fcc13e79dcf014fe4e47e065c350c7cc72af2e53eff895f11ba1bbb6a2b33271c1116ee870f266618eadfc2e78aa7349c@52.176.100.77:30303",
@@ -2735,10 +2735,11 @@
 			"builtin": {
 				"name": "alt_bn128_add",
 				"activate_at": "0x19f0a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 500,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
 					}
 				}
 			}
@@ -2749,10 +2750,11 @@
 			"builtin": {
 				"name": "alt_bn128_mul",
 				"activate_at": "0x19f0a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
-					"linear": {
-						"base": 40000,
-						"word": 0
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
 					}
 				}
 			}
@@ -2763,10 +2765,13 @@
 			"builtin": {
 				"name": "alt_bn128_pairing",
 				"activate_at": "0x19f0a0",
+				"eip1108_transition": "0x7fffffffffffff",
 				"pricing": {
 					"alt_bn128_pairing": {
 						"base": 100000,
-						"pair": 80000
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
 					}
 				}
 			}
--- a/ethcore/res/ethereum/st_peters_test.json
+++ b/ethcore/res/ethereum/st_peters_test.json
@@ -58,8 +58,46 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "0x00", "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "0x00", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "0x00", "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "0x00", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } }
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "0x0",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }
--- a/ethcore/res/ethereum/tobalaba.json
+++ b/ethcore/res/ethereum/tobalaba.json
--- a/ethcore/res/ethereum/transition_test.json
+++ b/ethcore/res/ethereum/transition_test.json
@@ -57,9 +57,46 @@
 		"0000000000000000000000000000000000000002": { "balance": "1", "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
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 		"0000000000000000000000000000000000000004": { "balance": "1", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
-		"0000000000000000000000000000000000000005": { "builtin": { "name": "modexp", "activate_at": "5", "pricing": { "modexp": { "divisor": 100 } } } },
-		"0000000000000000000000000000000000000006": { "builtin": { "name": "alt_bn128_add", "activate_at": "5", "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "builtin": { "name": "alt_bn128_mul", "activate_at": "5", "pricing": { "linear": { "base": 2000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "builtin": { "name": "alt_bn128_pairing", "activate_at": "5", "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } }
+		"0000000000000000000000000000000000000006": {
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": "5",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": "5",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": "5",
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		}
 	}
 }
--- a/ethcore/res/ethereum/volta.json
+++ b/ethcore/res/ethereum/volta.json
--- a/ethcore/res/ethereum/xdai.json
+++ b/ethcore/res/ethereum/xdai.json
@@ -0,0 +1,157 @@
+{
+  "name": "xDai Chain",
+  "dataDir": "xdai",
+  "engine": {
+    "authorityRound": {
+      "params": {
+        "stepDuration": 5,
+        "blockReward": "0x0",
+        "maximumUncleCountTransition": 0,
+        "maximumUncleCount": 0,
+        "validators": {
+          "multi": {
+            "0": {
+              "list": ["0xcace5b3c29211740e595850e80478416ee77ca21"]
+            },
+            "1300": {
+              "safeContract": "0x22e1229a2c5b95a60983b5577f745a603284f535"
+            }
+          }
+        },
+        "blockRewardContractAddress": "0x867305d19606aadba405ce534e303d0e225f9556",
+        "blockRewardContractTransition": 1310
+      }
+    }
+  },
+  "params": {
+    "gasLimitBoundDivisor": "0x400",
+    "maximumExtraDataSize": "0x20",
+    "minGasLimit": "0x1388",
+    "networkID": "100",
+    "eip140Transition": "0x0",
+    "eip211Transition": "0x0",
+    "eip214Transition": "0x0",
+    "eip658Transition": "0x0",
+    "eip145Transition": 1604400,
+    "eip1014Transition": 1604400,
+    "eip1052Transition": 1604400,
+    "eip1283Transition": 1604400,
+    "eip1283DisableTransition": 2508800,
+    "registrar": "0x1ec97dc137f5168af053c24460a1200502e1a9d2"
+  },
+  "genesis": {
+    "seal": {
+      "authorityRound": {
+        "step": "0x0",
+        "signature": "0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+      }
+    },
+    "difficulty": "0x20000",
+    "gasLimit": "0x989680"
+  },
+  "accounts": {
+    "0000000000000000000000000000000000000005": {
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+        "activate_at": "0x0",
+        "pricing": {
+          "modexp": {
+            "divisor": 20
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000006": {
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+        "activate_at": "0x0",
+        "eip1108_transition": "0x7fffffffffffff",
+        "pricing": {
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+            "price": 500,
+            "eip1108_transition_price": 150
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000007": {
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+        "activate_at": "0x0",
+        "eip1108_transition": "0x7fffffffffffff",
+        "pricing": {
+          "alt_bn128_const_operations": {
+            "price": 40000,
+            "eip1108_transition_price": 6000
+          }
+        }
+      }
+    },
+    "0000000000000000000000000000000000000008": {
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+        "activate_at": "0x0",
+        "eip1108_transition": "0x7fffffffffffff",
+        "pricing": {
+          "alt_bn128_pairing": {
+            "base": 100000,
+            "pair": 80000,
+            "eip1108_transition_base": 45000,
+            "eip1108_transition_pair": 34000
+          }
+        }
+      }
+    },
+    "0x0000000000000000000000000000000000000001": {
+      "balance": "1",
+      "builtin": {
+        "name": "ecrecover",
+        "pricing": {
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+            "word": 0
+          }
+        }
+      }
+    },
+    "0x0000000000000000000000000000000000000002": {
+      "balance": "1",
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+        "pricing": {
+          "linear": {
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+            "word": 12
+          }
+        }
+      }
+    },
+    "0x0000000000000000000000000000000000000003": {
+      "balance": "1",
+      "builtin": {
+        "name": "ripemd160",
+        "pricing": {
+          "linear": {
+            "base": 600,
+            "word": 120
+          }
+        }
+      }
+    },
+    "0x0000000000000000000000000000000000000004": {
+      "balance": "1",
+      "builtin": {
+        "name": "identity",
+        "pricing": {
+          "linear": {
+            "base": 15,
+            "word": 3
+          }
+        }
+      }
+    }
+  },
+  "nodes": [
+    "enode://66786c15390cb4fef3743571e12ec54ca343e7f119018136d68b670edd93604eedf74e5013dc5c2439f89e0e05593e29c409a97e155ea4165c6b832de131ef1e@3.214.113.185:30303"
+  ]
+}
--- a/ethcore/res/instant_seal.json
+++ b/ethcore/res/instant_seal.json
--- a/ethcore/res/null.json
+++ b/ethcore/res/null.json
@@ -36,9 +36,50 @@
 		"0000000000000000000000000000000000000003": { "balance": "1", "nonce": "0", "builtin": { "name": "ripemd160", "pricing": { "linear": { "base": 600, "word": 120 } } } },
 		"0000000000000000000000000000000000000004": { "balance": "1", "nonce": "0", "builtin": { "name": "identity", "pricing": { "linear": { "base": 15, "word": 3 } } } },
 		"0000000000000000000000000000000000000005": { "balance": "1", "builtin": { "name": "modexp", "activate_at": 0, "pricing": { "modexp": { "divisor": 20 } } } },
-		"0000000000000000000000000000000000000006": { "balance": "1", "builtin": { "name": "alt_bn128_add", "activate_at": 0, "pricing": { "linear": { "base": 500, "word": 0 } } } },
-		"0000000000000000000000000000000000000007": { "balance": "1", "builtin": { "name": "alt_bn128_mul", "activate_at": 0, "pricing": { "linear": { "base": 40000, "word": 0 } } } },
-		"0000000000000000000000000000000000000008": { "balance": "1", "builtin": { "name": "alt_bn128_pairing", "activate_at": 0, "pricing": { "alt_bn128_pairing": { "base": 100000, "pair": 80000 } } } },
+		"0000000000000000000000000000000000000006": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_add",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 500,
+						"eip1108_transition_price": 150
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000007": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_mul",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_const_operations": {
+						"price": 40000,
+						"eip1108_transition_price": 6000
+					}
+				}
+			}
+		},
+		"0000000000000000000000000000000000000008": {
+			"balance": "1",
+			"builtin": {
+				"name": "alt_bn128_pairing",
+				"activate_at": 0,
+				"eip1108_transition": "0x7fffffffffffff",
+				"pricing": {
+					"alt_bn128_pairing": {
+						"base": 100000,
+						"pair": 80000,
+						"eip1108_transition_base": 45000,
+						"eip1108_transition_pair": 34000
+					}
+				}
+			}
+		},
 		"9cce34f7ab185c7aba1b7c8140d620b4bda941d6": { "balance": "1606938044258990275541962092341162602522202993782792835301376", "nonce": "0" }
 	}
 }
--- a/ethcore/service/Cargo.toml
+++ b/ethcore/service/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity Ethereum (EthCore) Client & Network Service Creation & Registration with the I/O Subsystem"
 name = "ethcore-service"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/ethcore/src/builtin.rs
+++ b/ethcore/src/builtin.rs
@@ -16,21 +16,26 @@

 //! Standard built-in contracts.

-use std::cmp::{max, min};
-use std::io::{self, Read};
+use std::{
+	cmp::{max, min},
+	io::{self, Read, Cursor},
+	mem::size_of,
+};

-use byteorder::{ByteOrder, BigEndian};
-use parity_crypto::digest;
-use num::{BigUint, Zero, One};
-
-use hash::keccak;
+use bn;
+use byteorder::{BigEndian, LittleEndian, ByteOrder, ReadBytesExt};
 use ethereum_types::{H256, U256};
-use bytes::BytesRef;
-use ethkey::{Signature, recover as ec_recover};
 use ethjson;
+use ethkey::{Signature, recover as ec_recover};
+use hash::keccak;
+use log::{warn, trace};
+use num::{BigUint, Zero, One};
+use bytes::BytesRef;
+use parity_crypto::digest;
+use eip_152::compress;

 /// Execution error.
-#[derive(Debug)]
+#[derive(Debug, PartialEq)]
 pub struct Error(pub &'static str);

 impl From<&'static str> for Error {
@@ -52,9 +57,27 @@ pub trait Impl: Send + Sync {
 }

 /// A gas pricing scheme for built-in contracts.
-pub trait Pricer: Send + Sync {
-	/// The gas cost of running this built-in for the given input data.
-	fn cost(&self, input: &[u8]) -> U256;
+// TODO: refactor this trait, see https://github.com/paritytech/parity-ethereum/issues/11014
+trait Pricer: Send + Sync {
+	/// The gas cost of running this built-in for the given input data at block number `at`
+	fn cost(&self, input: &[u8], at: u64) -> U256;
+}
+
+/// Pricing for the Blake2 compression function (aka "F").
+/// Computes the price as a fixed cost per round where the number of rounds is part of the input
+/// byte slice.
+pub type Blake2FPricer = u64;
+
+impl Pricer for Blake2FPricer {
+	fn cost(&self, input: &[u8], _at: u64) -> U256 {
+		use std::convert::TryInto;
+		let (rounds_bytes, _) = input.split_at(std::mem::size_of::<u32>());
+		// Returning zero if the conversion fails is fine because `execute()` will check the length
+		// and bail with the appropriate error.
+		let rounds = u32::from_be_bytes(rounds_bytes.try_into().unwrap_or([0u8; 4]));
+//		U256::from(*self as u128 * rounds as u128)
+		U256::from(*self as u64 * rounds as u64)
+	}
 }

 /// A linear pricing model. This computes a price using a base cost and a cost per-word.
@@ -69,26 +92,56 @@ struct ModexpPricer {
 }

 impl Pricer for Linear {
-	fn cost(&self, input: &[u8]) -> U256 {
+	fn cost(&self, input: &[u8], _at: u64) -> U256 {
 		U256::from(self.base) + U256::from(self.word) * U256::from((input.len() + 31) / 32)
 	}
 }

-/// A alt_bn128_parinig pricing model. This computes a price using a base cost and a cost per pair.
-struct AltBn128PairingPricer {
+/// alt_bn128 constant operations (add and mul) pricing model.
+struct AltBn128ConstOperations {
+	price: usize,
+	eip1108_transition_at: u64,
+	eip1108_transition_price: usize,
+}
+
+impl Pricer for AltBn128ConstOperations {
+	fn cost(&self, _input: &[u8], at: u64) -> U256 {
+		if at >= self.eip1108_transition_at {
+			self.eip1108_transition_price.into()
+		} else {
+			self.price.into()
+		}
+	}
+}
+
+/// alt_bn128 pairing price
+#[derive(Debug, Copy, Clone)]
+struct AltBn128PairingPrice {
 	base: usize,
 	pair: usize,
 }

+/// alt_bn128_pairing pricing model. This computes a price using a base cost and a cost per pair.
+struct AltBn128PairingPricer {
+	price: AltBn128PairingPrice,
+	eip1108_transition_at: u64,
+	eip1108_transition_price: AltBn128PairingPrice,
+}
+
 impl Pricer for AltBn128PairingPricer {
-	fn cost(&self, input: &[u8]) -> U256 {
-		let cost = U256::from(self.base) + U256::from(self.pair) * U256::from(input.len() / 192);
-		cost
+	fn cost(&self, input: &[u8], at: u64) -> U256 {
+		let price = if at >= self.eip1108_transition_at {
+			self.eip1108_transition_price
+		} else {
+			self.price
+		};
+
+		U256::from(price.base) + U256::from(price.pair) * U256::from(input.len() / 192)
 	}
 }

 impl Pricer for ModexpPricer {
-	fn cost(&self, input: &[u8]) -> U256 {
+	fn cost(&self, input: &[u8], _at: u64) -> U256 {
 		let mut reader = input.chain(io::repeat(0));
 		let mut buf = [0; 32];

@@ -157,14 +210,16 @@ impl ModexpPricer {
 ///
 /// Unless `is_active` is true,
 pub struct Builtin {
-	pricer: Box<Pricer>,
-	native: Box<Impl>,
+	pricer: Box<dyn Pricer>,
+	native: Box<dyn Impl>,
 	activate_at: u64,
 }

 impl Builtin {
 	/// Simple forwarder for cost.
-	pub fn cost(&self, input: &[u8]) -> U256 { self.pricer.cost(input) }
+	pub fn cost(&self, input: &[u8], at: u64) -> U256 {
+		self.pricer.cost(input, at)
+	}

 	/// Simple forwarder for execute.
 	pub fn execute(&self, input: &[u8], output: &mut BytesRef) -> Result<(), Error> {
@@ -172,12 +227,17 @@ impl Builtin {
 	}

 	/// Whether the builtin is activated at the given block number.
-	pub fn is_active(&self, at: u64) -> bool { at >= self.activate_at }
+	pub fn is_active(&self, at: u64) -> bool {
+		at >= self.activate_at
+	}
 }

 impl From<ethjson::spec::Builtin> for Builtin {
 	fn from(b: ethjson::spec::Builtin) -> Self {
-		let pricer: Box<Pricer> = match b.pricing {
+		let pricer: Box<dyn Pricer> = match b.pricing {
+			ethjson::spec::Pricing::Blake2F(cost_per_round) => {
+				Box::new(cost_per_round)
+			},
 			ethjson::spec::Pricing::Linear(linear) => {
 				Box::new(Linear {
 					base: linear.base,
@@ -187,7 +247,7 @@ impl From<ethjson::spec::Builtin> for Builtin {
 			ethjson::spec::Pricing::Modexp(exp) => {
 				Box::new(ModexpPricer {
 					divisor: if exp.divisor == 0 {
-						warn!("Zero modexp divisor specified. Falling back to default.");
+						warn!(target: "builtin", "Zero modexp divisor specified. Falling back to default.");
 						10
 					} else {
 						exp.divisor
@@ -196,31 +256,46 @@ impl From<ethjson::spec::Builtin> for Builtin {
 			}
 			ethjson::spec::Pricing::AltBn128Pairing(pricer) => {
 				Box::new(AltBn128PairingPricer {
-					base: pricer.base,
-					pair: pricer.pair,
+					price: AltBn128PairingPrice {
+						base: pricer.base,
+						pair: pricer.pair,
+					},
+					eip1108_transition_at: b.eip1108_transition.map_or(u64::max_value(), Into::into),
+					eip1108_transition_price: AltBn128PairingPrice {
+						base: pricer.eip1108_transition_base,
+						pair: pricer.eip1108_transition_pair,
+					},
+				})
+			}
+			ethjson::spec::Pricing::AltBn128ConstOperations(pricer) => {
+				Box::new(AltBn128ConstOperations {
+						price: pricer.price,
+						eip1108_transition_price: pricer.eip1108_transition_price,
+						eip1108_transition_at: b.eip1108_transition.map_or(u64::max_value(), Into::into)
 				})
 			}
 		};

 		Builtin {
-			pricer: pricer,
+			pricer,
 			native: ethereum_builtin(&b.name),
-			activate_at: b.activate_at.map(Into::into).unwrap_or(0),
+			activate_at: b.activate_at.map_or(0, Into::into),
 		}
 	}
 }

 /// Ethereum built-in factory.
-pub fn ethereum_builtin(name: &str) -> Box<Impl> {
+pub fn ethereum_builtin(name: &str) -> Box<dyn Impl> {
 	match name {
-		"identity" => Box::new(Identity) as Box<Impl>,
-		"ecrecover" => Box::new(EcRecover) as Box<Impl>,
-		"sha256" => Box::new(Sha256) as Box<Impl>,
-		"ripemd160" => Box::new(Ripemd160) as Box<Impl>,
-		"modexp" => Box::new(ModexpImpl) as Box<Impl>,
-		"alt_bn128_add" => Box::new(Bn128AddImpl) as Box<Impl>,
-		"alt_bn128_mul" => Box::new(Bn128MulImpl) as Box<Impl>,
-		"alt_bn128_pairing" => Box::new(Bn128PairingImpl) as Box<Impl>,
+		"identity" => Box::new(Identity) as Box<dyn Impl>,
+		"ecrecover" => Box::new(EcRecover) as Box<dyn Impl>,
+		"sha256" => Box::new(Sha256) as Box<dyn Impl>,
+		"ripemd160" => Box::new(Ripemd160) as Box<dyn Impl>,
+		"modexp" => Box::new(ModexpImpl) as Box<dyn Impl>,
+		"alt_bn128_add" => Box::new(Bn128AddImpl) as Box<dyn Impl>,
+		"alt_bn128_mul" => Box::new(Bn128MulImpl) as Box<dyn Impl>,
+		"alt_bn128_pairing" => Box::new(Bn128PairingImpl) as Box<dyn Impl>,
+		"blake2_f" => Box::new(Blake2F) as Box<dyn Impl>,
 		_ => panic!("invalid builtin name: {}", name),
 	}
 }
@@ -232,6 +307,10 @@ pub fn ethereum_builtin(name: &str) -> Box<Impl> {
 // - sha256
 // - ripemd160
 // - modexp (EIP198)
+// - alt_bn128_add
+// - alt_bn128_mul
+// - alt_bn128_pairing
+// - blake2_f (The Blake2 compression function F, EIP-152)

 #[derive(Debug)]
 struct Identity;
@@ -257,8 +336,11 @@ struct Bn128MulImpl;
 #[derive(Debug)]
 struct Bn128PairingImpl;

+#[derive(Debug)]
+struct Blake2F;
+
 impl Impl for Identity {
-	fn execute(&self, input: &[u8], output: &mut BytesRef) -> Result<(), Error> {
+fn execute(&self, input: &[u8], output: &mut BytesRef) -> Result<(), Error> {
 		output.write(0, input);
 		Ok(())
 	}
@@ -302,6 +384,60 @@ impl Impl for Sha256 {
 	}
 }

+impl Impl for Blake2F {
+	/// Format of `input`:
+	/// [4 bytes for rounds][64 bytes for h][128 bytes for m][8 bytes for t_0][8 bytes for t_1][1 byte for f]
+	fn execute(&self, input: &[u8], output: &mut BytesRef) -> Result<(), Error> {
+		const BLAKE2_F_ARG_LEN: usize = 213;
+		const PROOF: &str = "Checked the length of the input above; qed";
+
+		if input.len() != BLAKE2_F_ARG_LEN {
+			trace!(target: "builtin", "input length for Blake2 F precompile should be exactly 213 bytes, was {}", input.len());
+			return Err("input length for Blake2 F precompile should be exactly 213 bytes".into())
+		}
+
+		let mut cursor = Cursor::new(input);
+		let rounds = cursor.read_u32::<BigEndian>().expect(PROOF);
+
+		// state vector, h
+		let mut h = [0u64; 8];
+		for state_word in h.iter_mut() {
+			*state_word = cursor.read_u64::<LittleEndian>().expect(PROOF);
+		}
+
+		// message block vector, m
+		let mut m = [0u64; 16];
+		for msg_word in m.iter_mut() {
+			*msg_word = cursor.read_u64::<LittleEndian>().expect(PROOF);
+		}
+
+		// 2w-bit offset counter, t
+		let t = [
+			cursor.read_u64::<LittleEndian>().expect(PROOF),
+			cursor.read_u64::<LittleEndian>().expect(PROOF),
+		];
+
+		// final block indicator flag, "f"
+		let f = match input.last() {
+				Some(1) => true,
+				Some(0) => false,
+				_ => {
+					trace!(target: "builtin", "incorrect final block indicator flag, was: {:?}", input.last());
+					return Err("incorrect final block indicator flag".into())
+				}
+			};
+
+		compress(&mut h, m, t, f, rounds as usize);
+
+		let mut output_buf = [0u8; 8 * size_of::<u64>()];
+		for (i, state_word) in h.iter().enumerate() {
+			output_buf[i*8..(i+1)*8].copy_from_slice(&state_word.to_le_bytes());
+		}
+		output.write(0, &output_buf[..]);
+		Ok(())
+	}
+}
+
 impl Impl for Ripemd160 {
 	fn execute(&self, input: &[u8], output: &mut BytesRef) -> Result<(), Error> {
 		let hash = digest::ripemd160(input);
@@ -450,7 +586,7 @@ impl Impl for Bn128AddImpl {
 		if let Some(sum) = AffineG1::from_jacobian(p1 + p2) {
 			// point not at infinity
 			sum.x().to_big_endian(&mut write_buf[0..32]).expect("Cannot fail since 0..32 is 32-byte length");
-			sum.y().to_big_endian(&mut write_buf[32..64]).expect("Cannot fail since 32..64 is 32-byte length");;
+			sum.y().to_big_endian(&mut write_buf[32..64]).expect("Cannot fail since 32..64 is 32-byte length");
 		}
 		output.write(0, &write_buf);

@@ -471,7 +607,7 @@ impl Impl for Bn128MulImpl {
 		if let Some(sum) = AffineG1::from_jacobian(p * fr) {
 			// point not at infinity
 			sum.x().to_big_endian(&mut write_buf[0..32]).expect("Cannot fail since 0..32 is 32-byte length");
-			sum.y().to_big_endian(&mut write_buf[32..64]).expect("Cannot fail since 32..64 is 32-byte length");;
+			sum.y().to_big_endian(&mut write_buf[32..64]).expect("Cannot fail since 32..64 is 32-byte length");
 		}
 		output.write(0, &write_buf);
 		Ok(())
@@ -489,7 +625,7 @@ impl Impl for Bn128PairingImpl {
 		}

 		if let Err(err) = self.execute_with_error(input, output) {
-			trace!("Pairining error: {:?}", err);
+			trace!(target: "builtin", "Pairing error: {:?}", err);
 			return Err(err)
 		}
 		Ok(())
@@ -558,12 +694,120 @@ impl Bn128PairingImpl {

 #[cfg(test)]
 mod tests {
-	use super::{Builtin, Linear, ethereum_builtin, Pricer, ModexpPricer, modexp as me};
-	use ethjson;
 	use ethereum_types::U256;
-	use bytes::BytesRef;
-	use rustc_hex::FromHex;
+	use ethjson::uint::Uint;
 	use num::{BigUint, Zero, One};
+	use bytes::BytesRef;
+use hex_literal::hex;
+	use super::{Builtin, Linear, ethereum_builtin, Pricer, ModexpPricer, modexp as me};
+
+	#[test]
+	fn blake2f_cost() {
+		let f = Builtin {
+			pricer: Box::new(123),
+			native: ethereum_builtin("blake2_f"),
+			activate_at: 0,
+		};
+		// 5 rounds
+		let input = hex!("0000000548c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001");
+		let mut output = [0u8; 64];
+		f.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).unwrap();
+
+		assert_eq!(f.cost(&input[..], 0), U256::from(123*5));
+	}
+
+	#[test]
+	fn blake2_f_is_err_on_invalid_length() {
+		let blake2 = ethereum_builtin("blake2_f");
+		// Test vector 1 and expected output from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-152.md#test-vector-1
+		let input = hex!("00000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001");
+		let mut out = [0u8; 64];
+
+		let result = blake2.execute(&input[..], &mut BytesRef::Fixed(&mut out[..]));
+		assert!(result.is_err());
+		assert_eq!(result.unwrap_err(), "input length for Blake2 F precompile should be exactly 213 bytes".into());
+	}
+
+	#[test]
+	fn blake2_f_is_err_on_invalid_length_2() {
+		let blake2 = ethereum_builtin("blake2_f");
+		// Test vector 2 and expected output from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-152.md#test-vector-2
+		let input = hex!("000000000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001");
+		let mut out = [0u8; 64];
+
+		let result = blake2.execute(&input[..], &mut BytesRef::Fixed(&mut out[..]));
+		assert!(result.is_err());
+		assert_eq!(result.unwrap_err(), "input length for Blake2 F precompile should be exactly 213 bytes".into());
+	}
+
+	#[test]
+	fn blake2_f_is_err_on_bad_finalization_flag() {
+		let blake2 = ethereum_builtin("blake2_f");
+		// Test vector 3 and expected output from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-152.md#test-vector-3
+		let input = hex!("0000000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000002");
+		let mut out = [0u8; 64];
+
+		let result = blake2.execute(&input[..], &mut BytesRef::Fixed(&mut out[..]));
+		assert!(result.is_err());
+		assert_eq!(result.unwrap_err(), "incorrect final block indicator flag".into());
+	}
+
+	#[test]
+	fn blake2_f_zero_rounds_is_ok_test_vector_4() {
+		let blake2 = ethereum_builtin("blake2_f");
+		// Test vector 4 and expected output from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-152.md#test-vector-4
+		let input = hex!("0000000048c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001");
+		let expected = hex!("08c9bcf367e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d282e6ad7f520e511f6c3e2b8c68059b9442be0454267ce079217e1319cde05b");
+		let mut output = [0u8; 64];
+		blake2.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).unwrap();
+		assert_eq!(&output[..], &expected[..]);
+	}
+
+	#[test]
+	fn blake2_f_test_vector_5() {
+		let blake2 = ethereum_builtin("blake2_f");
+		// Test vector 5 and expected output from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-152.md#test-vector-5
+		let input = hex!("0000000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001");
+		let expected = hex!("ba80a53f981c4d0d6a2797b69f12f6e94c212f14685ac4b74b12bb6fdbffa2d17d87c5392aab792dc252d5de4533cc9518d38aa8dbf1925ab92386edd4009923");
+		let mut out = [0u8; 64];
+		blake2.execute(&input[..], &mut BytesRef::Fixed(&mut out[..])).unwrap();
+		assert_eq!(&out[..], &expected[..]);
+	}
+
+	#[test]
+	fn blake2_f_test_vector_6() {
+		let blake2 = ethereum_builtin("blake2_f");
+		// Test vector 6 and expected output from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-152.md#test-vector-6
+		let input = hex!("0000000c48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000000");
+		let expected = hex!("75ab69d3190a562c51aef8d88f1c2775876944407270c42c9844252c26d2875298743e7f6d5ea2f2d3e8d226039cd31b4e426ac4f2d3d666a610c2116fde4735");
+		let mut out = [0u8; 64];
+		blake2.execute(&input[..], &mut BytesRef::Fixed(&mut out[..])).unwrap();
+		assert_eq!(&out[..], &expected[..]);
+	}
+
+	#[test]
+	fn blake2_f_test_vector_7() {
+		let blake2 = ethereum_builtin("blake2_f");
+		// Test vector 7 and expected output from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-152.md#test-vector-7
+		let input = hex!("0000000148c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001");
+		let expected = hex!("b63a380cb2897d521994a85234ee2c181b5f844d2c624c002677e9703449d2fba551b3a8333bcdf5f2f7e08993d53923de3d64fcc68c034e717b9293fed7a421");
+		let mut out = [0u8; 64];
+		blake2.execute(&input[..], &mut BytesRef::Fixed(&mut out[..])).unwrap();
+		assert_eq!(&out[..], &expected[..]);
+	}
+
+	#[ignore]
+	#[test]
+	fn blake2_f_test_vector_8() {
+		let blake2 = ethereum_builtin("blake2_f");
+		// Test vector 8 and expected output from https://github.com/ethereum/EIPs/blob/master/EIPS/eip-152.md#test-vector-8
+		// Note this test is slow, 4294967295/0xffffffff rounds take a while.
+		let input = hex!("ffffffff48c9bdf267e6096a3ba7ca8485ae67bb2bf894fe72f36e3cf1361d5f3af54fa5d182e6ad7f520e511f6c3e2b8c68059b6bbd41fbabd9831f79217e1319cde05b61626300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000001");
+		let expected = hex!("fc59093aafa9ab43daae0e914c57635c5402d8e3d2130eb9b3cc181de7f0ecf9b22bf99a7815ce16419e200e01846e6b5df8cc7703041bbceb571de6631d2615");
+		let mut out = [0u8; 64];
+		blake2.execute(&input[..], &mut BytesRef::Fixed(&mut out[..])).unwrap();
+		assert_eq!(&out[..], &expected[..]);
+	}

 	#[test]
 	fn modexp_func() {
@@ -626,19 +870,19 @@ mod tests {

 		let mut o = [255u8; 32];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
-		assert_eq!(&o[..], &(FromHex::from_hex("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855").unwrap())[..]);
+		assert_eq!(&o[..], hex!("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"));

 		let mut o8 = [255u8; 8];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o8[..])).expect("Builtin should not fail");
-		assert_eq!(&o8[..], &(FromHex::from_hex("e3b0c44298fc1c14").unwrap())[..]);
+		assert_eq!(&o8[..], hex!("e3b0c44298fc1c14"));

 		let mut o34 = [255u8; 34];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o34[..])).expect("Builtin should not fail");
-		assert_eq!(&o34[..], &(FromHex::from_hex("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855ffff").unwrap())[..]);
+		assert_eq!(&o34[..], &hex!("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855ffff")[..]);

 		let mut ov = vec![];
 		f.execute(&i[..], &mut BytesRef::Flexible(&mut ov)).expect("Builtin should not fail");
-		assert_eq!(&ov[..], &(FromHex::from_hex("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855").unwrap())[..]);
+		assert_eq!(&ov[..], &hex!("e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")[..]);
 	}

 	#[test]
@@ -649,59 +893,59 @@ mod tests {

 		let mut o = [255u8; 32];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
-		assert_eq!(&o[..], &(FromHex::from_hex("0000000000000000000000009c1185a5c5e9fc54612808977ee8f548b2258d31").unwrap())[..]);
+		assert_eq!(&o[..], &hex!("0000000000000000000000009c1185a5c5e9fc54612808977ee8f548b2258d31")[..]);

 		let mut o8 = [255u8; 8];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o8[..])).expect("Builtin should not fail");
-		assert_eq!(&o8[..], &(FromHex::from_hex("0000000000000000").unwrap())[..]);
+		assert_eq!(&o8[..], &hex!("0000000000000000")[..]);

 		let mut o34 = [255u8; 34];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o34[..])).expect("Builtin should not fail");
-		assert_eq!(&o34[..], &(FromHex::from_hex("0000000000000000000000009c1185a5c5e9fc54612808977ee8f548b2258d31ffff").unwrap())[..]);
+		assert_eq!(&o34[..], &hex!("0000000000000000000000009c1185a5c5e9fc54612808977ee8f548b2258d31ffff")[..]);
 	}

 	#[test]
 	fn ecrecover() {
 		let f = ethereum_builtin("ecrecover");

-		let i = FromHex::from_hex("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b650acf9d3f5f0a2c799776a1254355d5f4061762a237396a99a0e0e3fc2bcd6729514a0dacb2e623ac4abd157cb18163ff942280db4d5caad66ddf941ba12e03").unwrap();
+		let i = hex!("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b650acf9d3f5f0a2c799776a1254355d5f4061762a237396a99a0e0e3fc2bcd6729514a0dacb2e623ac4abd157cb18163ff942280db4d5caad66ddf941ba12e03");

 		let mut o = [255u8; 32];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
-		assert_eq!(&o[..], &(FromHex::from_hex("000000000000000000000000c08b5542d177ac6686946920409741463a15dddb").unwrap())[..]);
+		assert_eq!(&o[..], &hex!("000000000000000000000000c08b5542d177ac6686946920409741463a15dddb")[..]);

 		let mut o8 = [255u8; 8];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o8[..])).expect("Builtin should not fail");
-		assert_eq!(&o8[..], &(FromHex::from_hex("0000000000000000").unwrap())[..]);
+		assert_eq!(&o8[..], &hex!("0000000000000000")[..]);

 		let mut o34 = [255u8; 34];
 		f.execute(&i[..], &mut BytesRef::Fixed(&mut o34[..])).expect("Builtin should not fail");
-		assert_eq!(&o34[..], &(FromHex::from_hex("000000000000000000000000c08b5542d177ac6686946920409741463a15dddbffff").unwrap())[..]);
+		assert_eq!(&o34[..], &hex!("000000000000000000000000c08b5542d177ac6686946920409741463a15dddbffff")[..]);

-		let i_bad = FromHex::from_hex("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001a650acf9d3f5f0a2c799776a1254355d5f4061762a237396a99a0e0e3fc2bcd6729514a0dacb2e623ac4abd157cb18163ff942280db4d5caad66ddf941ba12e03").unwrap();
+		let i_bad = hex!("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001a650acf9d3f5f0a2c799776a1254355d5f4061762a237396a99a0e0e3fc2bcd6729514a0dacb2e623ac4abd157cb18163ff942280db4d5caad66ddf941ba12e03");
 		let mut o = [255u8; 32];
 		f.execute(&i_bad[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
-		assert_eq!(&o[..], &(FromHex::from_hex("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap())[..]);
+		assert_eq!(&o[..], &hex!("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")[..]);

-		let i_bad = FromHex::from_hex("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b000000000000000000000000000000000000000000000000000000000000001b0000000000000000000000000000000000000000000000000000000000000000").unwrap();
+		let i_bad = hex!("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b000000000000000000000000000000000000000000000000000000000000001b0000000000000000000000000000000000000000000000000000000000000000");
 		let mut o = [255u8; 32];
 		f.execute(&i_bad[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
-		assert_eq!(&o[..], &(FromHex::from_hex("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap())[..]);
+		assert_eq!(&o[..], &hex!("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")[..]);

-		let i_bad = FromHex::from_hex("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001b").unwrap();
+		let i_bad = hex!("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001b");
 		let mut o = [255u8; 32];
 		f.execute(&i_bad[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
-		assert_eq!(&o[..], &(FromHex::from_hex("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap())[..]);
+		assert_eq!(&o[..], &hex!("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")[..]);

-		let i_bad = FromHex::from_hex("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001bffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff000000000000000000000000000000000000000000000000000000000000001b").unwrap();
+		let i_bad = hex!("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001bffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff000000000000000000000000000000000000000000000000000000000000001b");
 		let mut o = [255u8; 32];
 		f.execute(&i_bad[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
-		assert_eq!(&o[..], &(FromHex::from_hex("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap())[..]);
+		assert_eq!(&o[..], &hex!("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")[..]);

-		let i_bad = FromHex::from_hex("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b000000000000000000000000000000000000000000000000000000000000001bffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap();
+		let i_bad = hex!("47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b000000000000000000000000000000000000000000000000000000000000001bffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 		let mut o = [255u8; 32];
 		f.execute(&i_bad[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
-		assert_eq!(&o[..], &(FromHex::from_hex("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap())[..]);
+		assert_eq!(&o[..], &hex!("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")[..]);

 		// TODO: Should this (corrupted version of the above) fail rather than returning some address?
 	/*	let i_bad = FromHex::from_hex("48173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b650acf9d3f5f0a2c799776a1254355d5f4061762a237396a99a0e0e3fc2bcd6729514a0dacb2e623ac4abd157cb18163ff942280db4d5caad66ddf941ba12e03").unwrap();
@@ -721,103 +965,103 @@ mod tests {

 		// test for potential gas cost multiplication overflow
 		{
-			let input = FromHex::from_hex("0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000003b27bafd00000000000000000000000000000000000000000000000000000000503c8ac3").unwrap();
+			let input = hex!("0000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000003b27bafd00000000000000000000000000000000000000000000000000000000503c8ac3");
 			let expected_cost = U256::max_value();
-			assert_eq!(f.cost(&input[..]), expected_cost.into());
+			assert_eq!(f.cost(&input[..], 0), expected_cost.into());
 		}

 		// test for potential exp len overflow
 		{
-			let input = FromHex::from_hex("\
-				00000000000000000000000000000000000000000000000000000000000000ff\
-				2a1e530000000000000000000000000000000000000000000000000000000000\
+			let input = hex!("
+				00000000000000000000000000000000000000000000000000000000000000ff
+				2a1e530000000000000000000000000000000000000000000000000000000000
 				0000000000000000000000000000000000000000000000000000000000000000"
-				).unwrap();
+				);

 			let mut output = vec![0u8; 32];
-			let expected = FromHex::from_hex("0000000000000000000000000000000000000000000000000000000000000000").unwrap();
+			let expected = hex!("0000000000000000000000000000000000000000000000000000000000000000");
 			let expected_cost = U256::max_value();

 			f.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).expect("Builtin should fail");
 			assert_eq!(output, expected);
-			assert_eq!(f.cost(&input[..]), expected_cost.into());
+			assert_eq!(f.cost(&input[..], 0), expected_cost.into());
 		}

 		// fermat's little theorem example.
 		{
-			let input = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000001\
-				0000000000000000000000000000000000000000000000000000000000000020\
-				0000000000000000000000000000000000000000000000000000000000000020\
-				03\
-				fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2e\
+			let input = hex!("
+				0000000000000000000000000000000000000000000000000000000000000001
+				0000000000000000000000000000000000000000000000000000000000000020
+				0000000000000000000000000000000000000000000000000000000000000020
+				03
+				fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2e
 				fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f"
-			).unwrap();
+			);

 			let mut output = vec![0u8; 32];
-			let expected = FromHex::from_hex("0000000000000000000000000000000000000000000000000000000000000001").unwrap();
+			let expected = hex!("0000000000000000000000000000000000000000000000000000000000000001");
 			let expected_cost = 13056;

 			f.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).expect("Builtin should not fail");
 			assert_eq!(output, expected);
-			assert_eq!(f.cost(&input[..]), expected_cost.into());
+			assert_eq!(f.cost(&input[..], 0), expected_cost.into());
 		}

 		// second example from EIP: zero base.
 		{
-			let input = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000000\
-				0000000000000000000000000000000000000000000000000000000000000020\
-				0000000000000000000000000000000000000000000000000000000000000020\
-				fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2e\
+			let input = hex!("
+				0000000000000000000000000000000000000000000000000000000000000000
+				0000000000000000000000000000000000000000000000000000000000000020
+				0000000000000000000000000000000000000000000000000000000000000020
+				fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2e
 				fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f"
-			).unwrap();
+			);

 			let mut output = vec![0u8; 32];
-			let expected = FromHex::from_hex("0000000000000000000000000000000000000000000000000000000000000000").unwrap();
+			let expected = hex!("0000000000000000000000000000000000000000000000000000000000000000");
 			let expected_cost = 13056;

 			f.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).expect("Builtin should not fail");
 			assert_eq!(output, expected);
-			assert_eq!(f.cost(&input[..]), expected_cost.into());
+			assert_eq!(f.cost(&input[..], 0), expected_cost.into());
 		}

 		// another example from EIP: zero-padding
 		{
-			let input = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000001\
-				0000000000000000000000000000000000000000000000000000000000000002\
-				0000000000000000000000000000000000000000000000000000000000000020\
-				03\
-				ffff\
+			let input = hex!("
+				0000000000000000000000000000000000000000000000000000000000000001
+				0000000000000000000000000000000000000000000000000000000000000002
+				0000000000000000000000000000000000000000000000000000000000000020
+				03
+				ffff
 				80"
-			).unwrap();
+			);

 			let mut output = vec![0u8; 32];
-			let expected = FromHex::from_hex("3b01b01ac41f2d6e917c6d6a221ce793802469026d9ab7578fa2e79e4da6aaab").unwrap();
+			let expected = hex!("3b01b01ac41f2d6e917c6d6a221ce793802469026d9ab7578fa2e79e4da6aaab");
 			let expected_cost = 768;

 			f.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).expect("Builtin should not fail");
 			assert_eq!(output, expected);
-			assert_eq!(f.cost(&input[..]), expected_cost.into());
+			assert_eq!(f.cost(&input[..], 0), expected_cost.into());
 		}

 		// zero-length modulus.
 		{
-			let input = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000001\
-				0000000000000000000000000000000000000000000000000000000000000002\
-				0000000000000000000000000000000000000000000000000000000000000000\
-				03\
+			let input = hex!("
+				0000000000000000000000000000000000000000000000000000000000000001
+				0000000000000000000000000000000000000000000000000000000000000002
+				0000000000000000000000000000000000000000000000000000000000000000
+				03
 				ffff"
-			).unwrap();
+			);

 			let mut output = vec![];
 			let expected_cost = 0;

 			f.execute(&input[..], &mut BytesRef::Flexible(&mut output)).expect("Builtin should not fail");
 			assert_eq!(output.len(), 0); // shouldn't have written any output.
-			assert_eq!(f.cost(&input[..]), expected_cost.into());
+			assert_eq!(f.cost(&input[..], 0), expected_cost.into());
 		}
 	}

@@ -832,21 +1076,21 @@ mod tests {

 		// zero-points additions
 		{
-			let input = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000000\
-				0000000000000000000000000000000000000000000000000000000000000000\
-				0000000000000000000000000000000000000000000000000000000000000000\
+			let input = hex!("
+				0000000000000000000000000000000000000000000000000000000000000000
+				0000000000000000000000000000000000000000000000000000000000000000
+				0000000000000000000000000000000000000000000000000000000000000000
 				0000000000000000000000000000000000000000000000000000000000000000"
-			).unwrap();
+			);

 			let mut output = vec![0u8; 64];
-			let expected = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000000\
+			let expected = hex!("
+				0000000000000000000000000000000000000000000000000000000000000000
 				0000000000000000000000000000000000000000000000000000000000000000"
-			).unwrap();
+			);

 			f.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).expect("Builtin should not fail");
-			assert_eq!(output, expected);
+			assert_eq!(output, &expected[..]);
 		}

 		// no input, should not fail
@@ -855,23 +1099,23 @@ mod tests {
 			let input = BytesRef::Fixed(&mut empty);

 			let mut output = vec![0u8; 64];
-			let expected = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000000\
+			let expected = hex!("
+				0000000000000000000000000000000000000000000000000000000000000000
 				0000000000000000000000000000000000000000000000000000000000000000"
-			).unwrap();
+			);

 			f.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).expect("Builtin should not fail");
-			assert_eq!(output, expected);
+			assert_eq!(output, &expected[..]);
 		}

 		// should fail - point not on curve
 		{
-			let input = FromHex::from_hex("\
-				1111111111111111111111111111111111111111111111111111111111111111\
-				1111111111111111111111111111111111111111111111111111111111111111\
-				1111111111111111111111111111111111111111111111111111111111111111\
+			let input = hex!("
+				1111111111111111111111111111111111111111111111111111111111111111
+				1111111111111111111111111111111111111111111111111111111111111111
+				1111111111111111111111111111111111111111111111111111111111111111
 				1111111111111111111111111111111111111111111111111111111111111111"
-			).unwrap();
+			);

 			let mut output = vec![0u8; 64];

@@ -891,29 +1135,29 @@ mod tests {

 		// zero-point multiplication
 		{
-			let input = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000000\
-				0000000000000000000000000000000000000000000000000000000000000000\
+			let input = hex!("
+				0000000000000000000000000000000000000000000000000000000000000000
+				0000000000000000000000000000000000000000000000000000000000000000
 				0200000000000000000000000000000000000000000000000000000000000000"
-			).unwrap();
+			);

 			let mut output = vec![0u8; 64];
-			let expected = FromHex::from_hex("\
-				0000000000000000000000000000000000000000000000000000000000000000\
+			let expected = hex!("
+				0000000000000000000000000000000000000000000000000000000000000000
 				0000000000000000000000000000000000000000000000000000000000000000"
-			).unwrap();
+			);

 			f.execute(&input[..], &mut BytesRef::Fixed(&mut output[..])).expect("Builtin should not fail");
-			assert_eq!(output, expected);
+			assert_eq!(output, &expected[..]);
 		}

 		// should fail - point not on curve
 		{
-			let input = FromHex::from_hex("\
-				1111111111111111111111111111111111111111111111111111111111111111\
-				1111111111111111111111111111111111111111111111111111111111111111\
+			let input = hex!("
+				1111111111111111111111111111111111111111111111111111111111111111
+				1111111111111111111111111111111111111111111111111111111111111111
 				0f00000000000000000000000000000000000000000000000000000000000000"
-			).unwrap();
+			);

 			let mut output = vec![0u8; 64];

@@ -954,16 +1198,12 @@ mod tests {
 		}
 	}

-	fn bytes(s: &'static str) -> Vec<u8> {
-		FromHex::from_hex(s).expect("static str should contain valid hex bytes")
-	}
-
 	#[test]
 	fn bn128_pairing_empty() {
 		// should not fail, because empty input is a valid input of 0 elements
 		empty_test(
 			builtin_pairing(),
-			bytes("0000000000000000000000000000000000000000000000000000000000000001"),
+			hex!("0000000000000000000000000000000000000000000000000000000000000001").to_vec(),
 		);
 	}

@@ -972,12 +1212,12 @@ mod tests {
 		// should fail - point not on curve
 		error_test(
 			builtin_pairing(),
-			&bytes("\
-				1111111111111111111111111111111111111111111111111111111111111111\
-				1111111111111111111111111111111111111111111111111111111111111111\
-				1111111111111111111111111111111111111111111111111111111111111111\
-				1111111111111111111111111111111111111111111111111111111111111111\
-				1111111111111111111111111111111111111111111111111111111111111111\
+			&hex!("
+				1111111111111111111111111111111111111111111111111111111111111111
+				1111111111111111111111111111111111111111111111111111111111111111
+				1111111111111111111111111111111111111111111111111111111111111111
+				1111111111111111111111111111111111111111111111111111111111111111
+				1111111111111111111111111111111111111111111111111111111111111111
 				1111111111111111111111111111111111111111111111111111111111111111"
 			),
 			Some("not on curve"),
@@ -989,9 +1229,9 @@ mod tests {
 		// should fail - input length is invalid
 		error_test(
 			builtin_pairing(),
-			&bytes("\
-				1111111111111111111111111111111111111111111111111111111111111111\
-				1111111111111111111111111111111111111111111111111111111111111111\
+			&hex!("
+				1111111111111111111111111111111111111111111111111111111111111111
+				1111111111111111111111111111111111111111111111111111111111111111
 				111111111111111111111111111111"
 			),
 			Some("Invalid input length"),
@@ -1008,7 +1248,7 @@ mod tests {
 	fn is_active() {
 		let pricer = Box::new(Linear { base: 10, word: 20} );
 		let b = Builtin {
-			pricer: pricer as Box<Pricer>,
+			pricer: pricer as Box<dyn Pricer>,
 			native: ethereum_builtin("identity"),
 			activate_at: 100_000,
 		};
@@ -1022,15 +1262,15 @@ mod tests {
 	fn from_named_linear() {
 		let pricer = Box::new(Linear { base: 10, word: 20 });
 		let b = Builtin {
-			pricer: pricer as Box<Pricer>,
+			pricer: pricer as Box<dyn Pricer>,
 			native: ethereum_builtin("identity"),
 			activate_at: 1,
 		};

-		assert_eq!(b.cost(&[0; 0]), U256::from(10));
-		assert_eq!(b.cost(&[0; 1]), U256::from(30));
-		assert_eq!(b.cost(&[0; 32]), U256::from(30));
-		assert_eq!(b.cost(&[0; 33]), U256::from(50));
+		assert_eq!(b.cost(&[0; 0], 0), U256::from(10));
+		assert_eq!(b.cost(&[0; 1], 0), U256::from(30));
+		assert_eq!(b.cost(&[0; 32], 0), U256::from(30));
+		assert_eq!(b.cost(&[0; 33], 0), U256::from(50));

 		let i = [0u8, 1, 2, 3];
 		let mut o = [255u8; 4];
@@ -1047,16 +1287,67 @@ mod tests {
 				word: 20,
 			}),
 			activate_at: None,
+			eip1108_transition: None,
 		});

-		assert_eq!(b.cost(&[0; 0]), U256::from(10));
-		assert_eq!(b.cost(&[0; 1]), U256::from(30));
-		assert_eq!(b.cost(&[0; 32]), U256::from(30));
-		assert_eq!(b.cost(&[0; 33]), U256::from(50));
+		assert_eq!(b.cost(&[0; 0], 0), U256::from(10));
+		assert_eq!(b.cost(&[0; 1], 0), U256::from(30));
+		assert_eq!(b.cost(&[0; 32], 0), U256::from(30));
+		assert_eq!(b.cost(&[0; 33], 0), U256::from(50));

 		let i = [0u8, 1, 2, 3];
 		let mut o = [255u8; 4];
 		b.execute(&i[..], &mut BytesRef::Fixed(&mut o[..])).expect("Builtin should not fail");
 		assert_eq!(i, o);
 	}
+
+	#[test]
+	fn bn128_pairing_eip1108_transition() {
+		let b = Builtin::from(ethjson::spec::Builtin {
+			name: "alt_bn128_pairing".to_owned(),
+			pricing: ethjson::spec::Pricing::AltBn128Pairing(ethjson::spec::builtin::AltBn128Pairing {
+				base: 100_000,
+				pair: 80_000,
+				eip1108_transition_base: 45_000,
+				eip1108_transition_pair: 34_000,
+			}),
+			activate_at: Some(Uint(U256::from(10))),
+			eip1108_transition: Some(Uint(U256::from(20))),
+		});
+
+		assert_eq!(b.cost(&[0; 192 * 3], 10), U256::from(340_000), "80 000 * 3 + 100 000 == 340 000");
+		assert_eq!(b.cost(&[0; 192 * 7], 20), U256::from(283_000), "34 000 * 7 + 45 000 == 283 000");
+	}
+
+	#[test]
+	fn bn128_add_eip1108_transition() {
+		let b = Builtin::from(ethjson::spec::Builtin {
+			name: "alt_bn128_add".to_owned(),
+			pricing: ethjson::spec::Pricing::AltBn128ConstOperations(ethjson::spec::builtin::AltBn128ConstOperations {
+				price: 500,
+				eip1108_transition_price: 150,
+			}),
+			activate_at: Some(Uint(U256::from(10))),
+			eip1108_transition: Some(Uint(U256::from(20))),
+		});
+
+		assert_eq!(b.cost(&[0; 192], 10), U256::from(500));
+		assert_eq!(b.cost(&[0; 10], 20), U256::from(150), "after istanbul hardfork gas cost for add should be 150");
+	}
+
+	#[test]
+	fn bn128_mul_eip1108_transition() {
+		let b = Builtin::from(ethjson::spec::Builtin {
+			name: "alt_bn128_mul".to_owned(),
+			pricing: ethjson::spec::Pricing::AltBn128ConstOperations(ethjson::spec::builtin::AltBn128ConstOperations {
+				price: 40_000,
+				eip1108_transition_price: 6000,
+			}),
+			activate_at: Some(Uint(U256::from(10))),
+			eip1108_transition: Some(Uint(U256::from(20))),
+		});
+
+		assert_eq!(b.cost(&[0; 192], 10), U256::from(40_000));
+		assert_eq!(b.cost(&[0; 10], 20), U256::from(6_000), "after istanbul hardfork gas cost for mul should be 6 000");
+	}
 }
--- a/ethcore/src/client/client.rs
+++ b/ethcore/src/client/client.rs
@@ -1109,7 +1109,7 @@ impl Client {
 				let mut ss = self.sleep_state.lock();
 				if let Some(t) = ss.last_activity {
 					if Instant::now() > t + timeout {
-						self.sleep();
+						self.sleep(false);
 						ss.last_activity = None;
 					}
 				}
@@ -1119,7 +1119,7 @@ impl Client {
 				let now = Instant::now();
 				if let Some(t) = ss.last_activity {
 					if now > t + timeout {
-						self.sleep();
+						self.sleep(false);
 						ss.last_activity = None;
 						ss.last_autosleep = Some(now);
 					}
@@ -1218,10 +1218,10 @@ impl Client {
 		}
 	}

-	fn sleep(&self) {
+	fn sleep(&self, force: bool) {
 		if self.liveness.load(AtomicOrdering::Relaxed) {
 			// only sleep if the import queue is mostly empty.
-			if self.queue_info().total_queue_size() <= MAX_QUEUE_SIZE_TO_SLEEP_ON {
+			if force || (self.queue_info().total_queue_size() <= MAX_QUEUE_SIZE_TO_SLEEP_ON) {
 				self.liveness.store(false, AtomicOrdering::Relaxed);
 				self.notify(|n| n.stop());
 				info!(target: "mode", "sleep: Sleeping.");
@@ -1730,7 +1730,7 @@ impl BlockChainClient for Client {
 		}
 		match new_mode {
 			Mode::Active => self.wake_up(),
-			Mode::Off => self.sleep(),
+			Mode::Off => self.sleep(true),
 			_ => {(*self.sleep_state.lock()).last_activity = Some(Instant::now()); }
 		}
 	}
--- a/ethcore/src/client/mod.rs
+++ b/ethcore/src/client/mod.rs
@@ -54,7 +54,7 @@ pub use vm::{LastHashes, EnvInfo};
 pub use error::TransactionImportError;
 pub use verification::VerifierType;

-mod traits;
+pub mod traits;

 mod chain_notify;
 mod private_notify;
--- a/ethcore/src/engines/instant_seal.rs
+++ b/ethcore/src/engines/instant_seal.rs
@@ -18,6 +18,7 @@ use engines::{Engine, Seal};
 use machine::Machine;
 use types::header::{Header, ExtendedHeader};
 use block::ExecutedBlock;
+use std::sync::atomic::{AtomicU64, Ordering};

 /// `InstantSeal` params.
 #[derive(Default, Debug, PartialEq)]
@@ -39,13 +40,16 @@ impl From<::ethjson::spec::InstantSealParams> for InstantSealParams {
 pub struct InstantSeal<M> {
 	params: InstantSealParams,
 	machine: M,
+		last_sealed_block: AtomicU64,
 }

 impl<M> InstantSeal<M> {
 	/// Returns new instance of InstantSeal over the given state machine.
 	pub fn new(params: InstantSealParams, machine: M) -> Self {
 		InstantSeal {
-			params, machine,
+			params,
+			machine,
+			last_sealed_block: AtomicU64::new(0),
 		}
 	}
 }
@@ -60,11 +64,19 @@ impl<M: Machine> Engine<M> for InstantSeal<M> {
 	fn seals_internally(&self) -> Option<bool> { Some(true) }

 	fn generate_seal(&self, block: &ExecutedBlock, _parent: &Header) -> Seal {
-		if block.transactions.is_empty() {
-			Seal::None
-		} else {
-			Seal::Regular(Vec::new())
+		if !block.transactions.is_empty() {
+			let block_number = block.header.number();
+			let last_sealed_block = self.last_sealed_block.load(Ordering::SeqCst);
+			// Return a regular seal if the given block is _higher_ than
+			// the last sealed one
+			if block_number > last_sealed_block {
+				let prev_last_sealed_block = self.last_sealed_block.compare_and_swap(last_sealed_block, block_number, Ordering::SeqCst);
+				if prev_last_sealed_block == last_sealed_block {
+					return Seal::Regular(Vec::new())
+				}
+			}
 		}
+		Seal::None
 	}

 	fn verify_local_seal(&self, _header: &Header) -> Result<(), M::Error> {
--- a/ethcore/src/ethereum/mod.rs
+++ b/ethcore/src/ethereum/mod.rs
@@ -57,9 +57,19 @@ pub fn new_poanet<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
 	load(params.into(), include_bytes!("../../res/ethereum/poacore.json"))
 }

-/// Create a new Tobalaba mainnet chain spec.
-pub fn new_tobalaba<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
-	load(params.into(), include_bytes!("../../res/ethereum/tobalaba.json"))
+/// Create a new xDai chain spec.
+pub fn new_xdai<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
+        load(params.into(), include_bytes!("../../res/ethereum/xdai.json"))
+}
+
+/// Create a new Volta mainnet chain spec.
+pub fn new_volta<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
+	load(params.into(), include_bytes!("../../res/ethereum/volta.json"))
+}
+
+/// Create a new EWC mainnet chain spec.
+pub fn new_ewc<'a, T: Into<SpecParams<'a>>>(params: T) -> Spec {
+	load(params.into(), include_bytes!("../../res/ethereum/ewc.json"))
 }

 /// Create a new Expanse mainnet chain spec.
--- a/ethcore/src/executive.rs
+++ b/ethcore/src/executive.rs
@@ -33,7 +33,7 @@ use externalities::*;
 use trace::{self, Tracer, VMTracer};
 use types::transaction::{Action, SignedTransaction};
 use transaction_ext::Transaction;
-use crossbeam;
+use crossbeam_utils::thread;
 pub use executed::{Executed, ExecutionResult};

 #[cfg(debug_assertions)]
@@ -395,7 +395,8 @@ impl<'a> CallCreateExecutive<'a> {
 					let default = [];
 					let data = if let Some(ref d) = params.data { d as &[u8] } else { &default as &[u8] };

-					let cost = builtin.cost(data);
+					// NOTE(niklasad1): block number is used by `builtin alt_bn128 ops` to enable eip1108
+					let cost = builtin.cost(data, self.info.number);
 					if cost <= params.gas {
 						let mut builtin_out_buffer = Vec::new();
 						let result = {
@@ -976,11 +977,18 @@ impl<'a, B: 'a + StateBackend> Executive<'a, B> {
 		if stack_depth != depth_threshold {
 			self.call_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
 		} else {
-			crossbeam::scope(|scope| {
-				scope.builder().stack_size(::std::cmp::max(self.schedule.max_depth.saturating_sub(depth_threshold) * STACK_SIZE_PER_DEPTH, local_stack_size)).spawn(move || {
-					self.call_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
-				}).expect("Sub-thread creation cannot fail; the host might run out of resources; qed")
-			}).join().expect("Sub-thread never panics; qed")
+			thread::scope(|scope| {
+				let stack_size = cmp::max(self.schedule.max_depth.saturating_sub(depth_threshold) * STACK_SIZE_PER_DEPTH, local_stack_size);
+				scope.builder()
+					.stack_size(stack_size)
+					.spawn(|_| {
+						self.call_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
+					})
+					.expect("Sub-thread creation cannot fail; the host might run out of resources; qed")
+					.join()
+			})
+			.expect("Sub-thread never panics; qed")
+			.expect("Sub-thread never panics; qed")
 		}
 	}

@@ -1060,11 +1068,18 @@ impl<'a, B: 'a + StateBackend> Executive<'a, B> {
 		if stack_depth != depth_threshold {
 			self.create_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
 		} else {
-			crossbeam::scope(|scope| {
-				scope.builder().stack_size(::std::cmp::max(self.schedule.max_depth.saturating_sub(depth_threshold) * STACK_SIZE_PER_DEPTH, local_stack_size)).spawn(move || {
-					self.create_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
-				}).expect("Sub-thread creation cannot fail; the host might run out of resources; qed")
-			}).join().expect("Sub-thread never panics; qed")
+			thread::scope(|scope| {
+				let stack_size = cmp::max(self.schedule.max_depth.saturating_sub(depth_threshold) * STACK_SIZE_PER_DEPTH, local_stack_size);
+				scope.builder()
+					.stack_size(stack_size)
+					.spawn(|_| {
+						self.create_with_stack_depth(params, substate, stack_depth, tracer, vm_tracer)
+					})
+					.expect("Sub-thread creation cannot fail; the host might run out of resources; qed")
+					.join()
+			})
+			.expect("Sub-thread never panics; qed")
+			.expect("Sub-thread never panics; qed")
 		}
 	}

--- a/ethcore/src/externalities.rs
+++ b/ethcore/src/externalities.rs
@@ -399,6 +399,10 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 		self.env_info
 	}

+	fn chain_id(&self) -> u64 {
+		self.machine.params().chain_id
+	}
+
 	fn depth(&self) -> usize {
 		self.depth
 	}
@@ -419,6 +423,10 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for Externalities<'a, T, V, B>
 		self.vm_tracer.trace_prepare_execute(pc, instruction, gas_cost, mem_written, store_written)
 	}

+	fn trace_failed(&mut self) {
+		self.vm_tracer.trace_failed();
+	}
+
 	fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
 		self.vm_tracer.trace_executed(gas_used, stack_push, mem)
 	}
--- a/ethcore/src/json_tests/executive.rs
+++ b/ethcore/src/json_tests/executive.rs
@@ -210,6 +210,8 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for TestExt<'a, T, V, B>
 		self.ext.env_info()
 	}

+	fn chain_id(&self) -> u64 { 0 }
+
 	fn depth(&self) -> usize {
 		0
 	}
--- a/ethcore/src/lib.rs
+++ b/ethcore/src/lib.rs
@@ -61,7 +61,8 @@ extern crate ansi_term;
 extern crate bn;
 extern crate byteorder;
 extern crate common_types as types;
-extern crate crossbeam;
+extern crate crossbeam_utils;
+extern crate eip_152;
 extern crate ethabi;
 extern crate ethash;
 extern crate ethcore_blockchain as blockchain;
@@ -120,6 +121,9 @@ extern crate blooms_db;
 extern crate env_logger;
 #[cfg(test)]
 extern crate rlp_compress;
+#[cfg(test)]
+#[macro_use]
+extern crate hex_literal;

 #[macro_use]
 extern crate ethabi_derive;
--- a/ethcore/src/machine/impls.rs
+++ b/ethcore/src/machine/impls.rs
@@ -474,7 +474,7 @@ mod tests {

 	#[test]
 	fn should_disallow_unsigned_transactions() {
-		let rlp = "ea80843b9aca0083015f90948921ebb5f79e9e3920abe571004d0b1d5119c154865af3107a400080038080".into();
+		let rlp = "ea80843b9aca0083015f90948921ebb5f79e9e3920abe571004d0b1d5119c154865af3107a400080038080";
 		let transaction: UnverifiedTransaction = ::rlp::decode(&::rustc_hex::FromHex::from_hex(rlp).unwrap()).unwrap();
 		let spec = ::ethereum::new_ropsten_test();
 		let ethparams = get_default_ethash_extensions();
--- a/ethcore/src/miner/miner.rs
+++ b/ethcore/src/miner/miner.rs
@@ -31,7 +31,7 @@ use ethcore_miner::work_notify::NotifyWork;
 use ethereum_types::{H256, U256, Address};
 use io::IoChannel;
 use miner::pool_client::{PoolClient, CachedNonceClient, NonceCache};
-use miner;
+use miner::{self, MinerService};
 use parking_lot::{Mutex, RwLock};
 use rayon::prelude::*;
 use types::transaction::{
@@ -52,6 +52,7 @@ use client::{
 	BlockChain, ChainInfo, BlockProducer, SealedBlockImporter, Nonce, TransactionInfo, TransactionId
 };
 use client::{BlockId, ClientIoMessage};
+use client::traits::EngineClient;
 use engines::{EthEngine, Seal, EngineSigner};
 use error::{Error, ErrorKind};
 use executed::ExecutionError;
@@ -494,7 +495,7 @@ impl Miner {
 			let sender = transaction.sender();

 			// Re-verify transaction again vs current state.
-			let result = client.verify_signed(&transaction)
+			let result = client.verify_for_pending_block(&transaction, &open_block.header)
 				.map_err(|e| e.into())
 				.and_then(|_| {
 					open_block.push_transaction(transaction, None)
@@ -830,7 +831,6 @@ impl Miner {

 	/// Prepare pending block, check whether sealing is needed, and then update sealing.
 	fn prepare_and_update_sealing<C: miner::BlockChainClient>(&self, chain: &C) {
-		use miner::MinerService;

 		// Make sure to do it after transaction is imported and lock is dropped.
 		// We need to create pending block and enable sealing.
@@ -1307,6 +1307,9 @@ impl miner::MinerService for Miner {
 						service_transaction_checker.as_ref(),
 					);
 					queue.cull(client);
+					if is_internal_import {
+						chain.update_sealing();
+					}
 				};

 				if let Err(e) = channel.send(ClientIoMessage::execute(cull)) {
@@ -1314,6 +1317,9 @@ impl miner::MinerService for Miner {
 				}
 			} else {
 				self.transaction_queue.cull(client);
+				if is_internal_import {
+					self.update_sealing(chain);
+				}
 			}
 		}
 		if let Some(ref service_transaction_checker) = self.service_transaction_checker {
--- a/ethcore/src/miner/pool_client.rs
+++ b/ethcore/src/miner/pool_client.rs
@@ -113,11 +113,13 @@ impl<'a, C: 'a> PoolClient<'a, C> where
 		}
 	}

-	/// Verifies if signed transaction is executable.
+	/// Verifies transaction against its block (before its import into this block)
+	/// Also Verifies if signed transaction is executable.
 	///
 	/// This should perform any verifications that rely on chain status.
-	pub fn verify_signed(&self, tx: &SignedTransaction) -> Result<(), transaction::Error> {
-		self.engine.machine().verify_transaction(&tx, &self.best_block_header, self.chain)
+	pub fn verify_for_pending_block(&self, tx: &SignedTransaction, header: &Header) -> Result<(), transaction::Error> {
+		self.engine.machine().verify_transaction_basic(tx, header)?;
+		self.engine.machine().verify_transaction(tx, &self.best_block_header, self.chain)
 	}
 }

@@ -138,8 +140,7 @@ impl<'a, C: 'a> pool::client::Client for PoolClient<'a, C> where
 		self.engine.verify_transaction_basic(&tx, &self.best_block_header)?;
 		let tx = self.engine.verify_transaction_unordered(tx, &self.best_block_header)?;

-		self.verify_signed(&tx)?;
-
+		self.engine.machine().verify_transaction(&tx, &self.best_block_header, self.chain)?;
 		Ok(tx)
 	}

--- a/ethcore/src/snapshot/mod.rs
+++ b/ethcore/src/snapshot/mod.rs
@@ -50,7 +50,7 @@ use self::io::SnapshotWriter;
 use super::state_db::StateDB;
 use super::state::Account as StateAccount;

-use crossbeam::scope;
+use crossbeam_utils::thread;
 use rand::{Rng, OsRng};

 pub use self::error::Error;
@@ -167,9 +167,9 @@ pub fn take_snapshot<W: SnapshotWriter + Send>(

 	let version = chunker.current_version();
 	let writer = Mutex::new(writer);
-	let (state_hashes, block_hashes) = scope(|scope| -> Result<(Vec<H256>, Vec<H256>), Error> {
+	let (state_hashes, block_hashes) = thread::scope(|scope| -> Result<(Vec<H256>, Vec<H256>), Error> {
 		let writer = &writer;
-		let block_guard = scope.spawn(move || {
+		let block_guard = scope.spawn(move |_| {
 			chunk_secondary(chunker, chain, block_hash, writer, p)
 		});

@@ -181,7 +181,7 @@ pub fn take_snapshot<W: SnapshotWriter + Send>(
 		let mut state_guards = Vec::with_capacity(num_threads as usize);

 		for thread_idx in 0..num_threads {
-			let state_guard = scope.spawn(move || -> Result<Vec<H256>, Error> {
+			let state_guard = scope.spawn(move |_| -> Result<Vec<H256>, Error> {
 				let mut chunk_hashes = Vec::new();

 				for part in (thread_idx..SNAPSHOT_SUBPARTS).step_by(num_threads) {
@@ -205,7 +205,7 @@ pub fn take_snapshot<W: SnapshotWriter + Send>(

 		debug!(target: "snapshot", "Took a snapshot of {} accounts", p.accounts.load(Ordering::SeqCst));
 		Ok((state_hashes, block_hashes))
-	})?;
+	}).expect("Sub-thread never panics; qed")?;

 	info!(target: "snapshot", "produced {} state chunks and {} block chunks.", state_hashes.len(), block_hashes.len());

--- a/ethcore/src/spec/spec.rs
+++ b/ethcore/src/spec/spec.rs
@@ -65,7 +65,7 @@ fn fmt_err<F: ::std::fmt::Display>(f: F) -> String {
 /// we define a "bugfix" hard fork as any hard fork which
 /// you would put on-by-default in a new chain.
 #[derive(Debug, PartialEq, Default)]
-#[cfg_attr(test, derive(Clone))]
+#[cfg_attr(any(test, feature = "test-helpers"), derive(Clone))]
 pub struct CommonParams {
 	/// Account start nonce.
 	pub account_start_nonce: U256,
@@ -121,8 +121,18 @@ pub struct CommonParams {
 	pub eip1283_transition: BlockNumber,
 	/// Number of first block where EIP-1283 rules end.
 	pub eip1283_disable_transition: BlockNumber,
+	/// Number of first block where EIP-1283 rules re-enabled.
+	pub eip1283_reenable_transition: BlockNumber,
 	/// Number of first block where EIP-1014 rules begin.
 	pub eip1014_transition: BlockNumber,
+	/// Number of first block where EIP-1706 rules begin.
+	pub eip1706_transition: BlockNumber,
+	/// Number of first block where EIP-1344 rules begin: https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1344.md
+	pub eip1344_transition: BlockNumber,
+	/// Number of first block where EIP-1884 rules begin:https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1884.md
+	pub eip1884_transition: BlockNumber,
+	/// Number of first block where EIP-2028 rules begin.
+	pub eip2028_transition: BlockNumber,
 	/// Number of first block where dust cleanup rules (EIP-168 and EIP169) begin.
 	pub dust_protection_transition: BlockNumber,
 	/// Nonce cap increase per block. Nonce cap is only checked if dust protection is enabled.
@@ -189,7 +199,22 @@ impl CommonParams {
 		schedule.have_return_data = block_number >= self.eip211_transition;
 		schedule.have_bitwise_shifting = block_number >= self.eip145_transition;
 		schedule.have_extcodehash = block_number >= self.eip1052_transition;
-		schedule.eip1283 = block_number >= self.eip1283_transition && !(block_number >= self.eip1283_disable_transition);
+		schedule.have_chain_id = block_number >= self.eip1344_transition;
+		schedule.eip1283 =
+			(block_number >= self.eip1283_transition &&
+			!(block_number >= self.eip1283_disable_transition)) ||
+			block_number >= self.eip1283_reenable_transition;
+		schedule.eip1706 = block_number >= self.eip1706_transition;
+
+		if block_number >= self.eip1884_transition {
+			schedule.have_selfbalance = true;
+			schedule.sload_gas = 800;
+			schedule.balance_gas = 700;
+			schedule.extcodehash_gas = 700;
+		}
+		if block_number >= self.eip2028_transition {
+			schedule.tx_data_non_zero_gas = 16;
+		}
 		if block_number >= self.eip210_transition {
 			schedule.blockhash_gas = 800;
 		}
@@ -304,10 +329,30 @@ impl From<ethjson::spec::Params> for CommonParams {
 				BlockNumber::max_value,
 				Into::into,
 			),
+			eip1283_reenable_transition: p.eip1283_reenable_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
+			eip1706_transition: p.eip1706_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
 			eip1014_transition: p.eip1014_transition.map_or_else(
 				BlockNumber::max_value,
 				Into::into,
 			),
+			eip1344_transition: p.eip1344_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
+			eip1884_transition: p.eip1884_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
+			eip2028_transition: p.eip2028_transition.map_or_else(
+				BlockNumber::max_value,
+				Into::into,
+			),
 			dust_protection_transition: p.dust_protection_transition.map_or_else(
 				BlockNumber::max_value,
 				Into::into,
--- a/ethcore/src/trace/executive_tracer.rs
+++ b/ethcore/src/trace/executive_tracer.rs
@@ -16,8 +16,10 @@

 //! Simple executive tracer.

+use std::cmp::min;
 use ethereum_types::{U256, Address};
 use vm::{Error as VmError, ActionParams};
+use log::{debug, warn};
 use trace::trace::{Call, Create, Action, Res, CreateResult, CallResult, VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff, Suicide, Reward, RewardType};
 use trace::{Tracer, VMTracer, FlatTrace};

@@ -193,12 +195,16 @@ impl Tracer for ExecutiveTracer {
 	}
 }

+struct TraceData {
+	mem_written: Option<(usize, usize)>,
+	store_written: Option<(U256, U256)>,
+}
+
 /// Simple VM tracer. Traces all operations.
 pub struct ExecutiveVMTracer {
 	data: VMTrace,
 	depth: usize,
-	last_mem_written: Option<(usize, usize)>,
-	last_store_written: Option<(U256, U256)>,
+	trace_stack: Vec<TraceData>,
 }

 impl ExecutiveVMTracer {
@@ -212,8 +218,7 @@ impl ExecutiveVMTracer {
 				subs: vec![],
 			},
 			depth: 0,
-			last_mem_written: None,
-			last_store_written: None,
+			trace_stack: vec![],
 		}
 	}

@@ -240,18 +245,27 @@ impl VMTracer for ExecutiveVMTracer {
 				executed: None,
 			});
 		});
-		self.last_mem_written = mem_written;
-		self.last_store_written = store_written;
+		self.trace_stack.push(TraceData { mem_written, store_written });
+	}
+
+	fn trace_failed(&mut self) {
+		let _ = self.trace_stack.pop().expect("pushed in trace_prepare_execute; qed");
 	}

 	fn trace_executed(&mut self, gas_used: U256, stack_push: &[U256], mem: &[u8]) {
-		let mem_diff = self.last_mem_written.take().map(|(o, s)| (o, &(mem[o..o+s])));
-		let store_diff = self.last_store_written.take();
+		let TraceData { mem_written, store_written } = self.trace_stack.pop().expect("pushed in trace_prepare_execute; qed");
+		let mem_diff = mem_written.map(|(o, s)| {
+			if o + s > mem.len() {
+				warn!(target: "trace", "mem_written is out of bounds");
+			}
+			(o, &mem[min(mem.len(), o)..min(o + s, mem.len())])
+		});
+		let store_diff = store_written;
 		Self::with_trace_in_depth(&mut self.data, self.depth, move |trace| {
 			let ex = VMExecutedOperation {
 				gas_used: gas_used,
-				stack_push: stack_push.iter().cloned().collect(),
-				mem_diff: mem_diff.map(|(s, r)| MemoryDiff { offset: s, data: r.iter().cloned().collect() }),
+				stack_push: stack_push.to_vec(),
+				mem_diff: mem_diff.map(|(s, r)| MemoryDiff { offset: s, data: r.to_vec() }),
 				store_diff: store_diff.map(|(l, v)| StorageDiff { location: l, value: v }),
 			};
 			trace.operations.last_mut().expect("trace_executed is always called after a trace_prepare_execute; trace.operations cannot be empty; qed").executed = Some(ex);
--- a/ethcore/src/trace/mod.rs
+++ b/ethcore/src/trace/mod.rs
@@ -85,6 +85,9 @@ pub trait VMTracer: Send {
 	/// Trace the preparation to execute a single valid instruction.
 	fn trace_prepare_execute(&mut self, _pc: usize, _instruction: u8, _gas_cost: U256, _mem_written: Option<(usize, usize)>, _store_written: Option<(U256, U256)>) {}

+	/// Trace the execution failure of a single instruction.
+	fn trace_failed(&mut self) {}
+
 	/// Trace the finalised execution of a single valid instruction.
 	fn trace_executed(&mut self, _gas_used: U256, _stack_push: &[U256], _mem: &[u8]) {}

--- a/ethcore/sync/Cargo.toml
+++ b/ethcore/sync/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-description = "Ethcore blockchain sync"
+description = "Parity Ethereum (EthCore) Blockchain Synchronization (Strategy, Blockchain Downloader, Blockchain Synchronization Implementation of Ethereum Protocol, Propagating Data to Peers, Requesting Data from Peers, Supplying Data in Response to Peer Requests, Handling Peer Responses, Matching Packet IDs and Protocol, Light Client Synchronization of Header Chain, Header Download State Machine, Light Decoding & Verifying Header Responses, Private Transaction Handling, Synchronization Snapshot Service to Download & Verify Block Chunks, Peer Connection Management and Blockchain Client I/O Interface for Synchronization Handler, Transaction Statistics)"
 name = "ethcore-sync"
 version = "1.12.0"
 license = "GPL-3.0"
--- a/ethcore/sync/src/chain/mod.rs
+++ b/ethcore/sync/src/chain/mod.rs
@@ -962,7 +962,7 @@ impl ChainSync {
 					}

 					// Only ask for old blocks if the peer has an equal or higher difficulty
-					let equal_or_higher_difficulty = peer_difficulty.map_or(false, |pd| pd >= syncing_difficulty);
+					let equal_or_higher_difficulty = peer_difficulty.map_or(true, |pd| pd >= syncing_difficulty);

 					if force || equal_or_higher_difficulty {
 						if let Some(request) = self.old_blocks.as_mut().and_then(|d| d.request_blocks(peer_id, io, num_active_peers)) {
--- a/ethcore/types/Cargo.toml
+++ b/ethcore/types/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
+description = "Parity Ethereum Common Types"
 name = "common-types"
-description = "Common types used throughout the codebase"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]

@@ -16,4 +16,7 @@ rlp_derive = { path = "../../util/rlp-derive" }
 unexpected = { path = "../../util/unexpected" }

 [dev-dependencies]
-rustc-hex= "1.0"
+rustc-hex = "1.0"
+
+[features]
+test-helpers = []
--- a/ethcore/types/src/restoration_status.rs
+++ b/ethcore/types/src/restoration_status.rs
@@ -21,7 +21,7 @@
 pub enum RestorationStatus {
 	///	No restoration.
 	Inactive,
-	/// Restoration is initalizing
+	/// Restoration is initializing
 	Initializing {
 		/// Number of chunks done/imported
 		chunks_done: u32,
--- a/ethcore/types/src/transaction/error.rs
+++ b/ethcore/types/src/transaction/error.rs
@@ -28,9 +28,6 @@ pub enum Error {
 	AlreadyImported,
 	/// Transaction is not valid anymore (state already has higher nonce)
 	Old,
-	/// Transaction has too low fee
-	/// (there is already a transaction with the same sender-nonce but higher gas price)
-	TooCheapToReplace,
 	/// Transaction was not imported to the queue because limit has been reached.
 	LimitReached,
 	/// Transaction's gas price is below threshold.
@@ -40,6 +37,14 @@ pub enum Error {
 		/// Transaction gas price
 		got: U256,
 	},
+	/// Transaction has too low fee
+	/// (there is already a transaction with the same sender-nonce but higher gas price)
+	TooCheapToReplace {
+		/// previous transaction's gas price
+		prev: Option<U256>,
+		/// new transaction's gas price
+		new: Option<U256>,
+	},
 	/// Transaction's gas is below currently set minimal gas requirement.
 	InsufficientGas {
 		/// Minimal expected gas
@@ -99,7 +104,10 @@ impl fmt::Display for Error {
 		let msg = match *self {
 			AlreadyImported => "Already imported".into(),
 			Old => "No longer valid".into(),
-			TooCheapToReplace => "Gas price too low to replace".into(),
+			TooCheapToReplace { prev, new } =>
+				format!("Gas price too low to replace, previous tx gas: {:?}, new tx gas: {:?}",
+						prev, new
+				),
 			LimitReached => "Transaction limit reached".into(),
 			InsufficientGasPrice { minimal, got } =>
 				format!("Insufficient gas price. Min={}, Given={}", minimal, got),
--- a/ethcore/types/src/transaction/transaction.rs
+++ b/ethcore/types/src/transaction/transaction.rs
@@ -53,7 +53,11 @@ impl Default for Action {
 impl rlp::Decodable for Action {
 	fn decode(rlp: &Rlp) -> Result<Self, DecoderError> {
 		if rlp.is_empty() {
-			Ok(Action::Create)
+			if rlp.is_data() {
+				Ok(Action::Create)
+			} else {
+				Err(DecoderError::RlpExpectedToBeData)
+			}
 		} else {
 			Ok(Action::Call(rlp.as_val()?))
 		}
@@ -572,6 +576,20 @@ mod tests {
 		assert_eq!(t.chain_id(), None);
 	}

+	#[test]
+	fn empty_atom_as_create_action() {
+		let empty_atom = [0x80];
+		let action: Action = rlp::decode(&empty_atom).unwrap();
+		assert_eq!(action, Action::Create);
+	}
+
+	#[test]
+	fn empty_list_as_create_action_rejected() {
+		let empty_list = [0xc0];
+		let action: Result<Action, DecoderError> = rlp::decode(&empty_list);
+		assert_eq!(action, Err(DecoderError::RlpExpectedToBeData));
+	}
+
 	#[test]
 	fn signing_eip155_zero_chainid() {
 		use ethkey::{Random, Generator};
--- a/ethcore/vm/Cargo.toml
+++ b/ethcore/vm/Cargo.toml
@@ -1,15 +1,13 @@
 [package]
+description = "Virtual Machines (VM) Support Library"
 name = "vm"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]

 [dependencies]
-byteorder = "1.0"
 parity-bytes = "0.1"
 ethereum-types = "0.4"
-trie-db = "0.11.0"
 patricia-trie-ethereum = { path = "../../util/patricia-trie-ethereum" }
-log = "0.4"
 ethjson = { path = "../../json" }
 rlp = { version = "0.3.0", features = ["ethereum"] }
 keccak-hash = "0.1"
--- a/ethcore/vm/src/env_info.rs
+++ b/ethcore/vm/src/env_info.rs
@@ -65,7 +65,7 @@ impl From<ethjson::vm::Env> for EnvInfo {
 	fn from(e: ethjson::vm::Env) -> Self {
 		let number = e.number.into();
 		EnvInfo {
-			number: number,
+			number,
 			author: e.author.into(),
 			difficulty: e.difficulty.into(),
 			gas_limit: e.gas_limit.into(),
--- a/ethcore/vm/src/ext.rs
+++ b/ethcore/vm/src/ext.rs
@@ -91,7 +91,7 @@ pub trait Ext {

 	/// Creates new contract.
 	///
-	/// Returns gas_left and contract address if contract creation was succesfull.
+	/// Returns gas_left and contract address if contract creation was successful.
 	fn create(
 		&mut self,
 		gas: &U256,
@@ -144,6 +144,9 @@ pub trait Ext {
 	/// Returns environment info.
 	fn env_info(&self) -> &EnvInfo;

+	/// Returns the chain ID of the blockchain
+	fn chain_id(&self) -> u64;
+
 	/// Returns current depth of execution.
 	///
 	/// If contract A calls contract B, and contract B calls C,
@@ -160,8 +163,12 @@ pub trait Ext {
 	fn trace_next_instruction(&mut self, _pc: usize, _instruction: u8, _current_gas: U256) -> bool { false }

 	/// Prepare to trace an operation. Passthrough for the VM trace.
+	/// For each call of `trace_prepare_execute` either `trace_failed` or `trace_executed` MUST be called.
 	fn trace_prepare_execute(&mut self, _pc: usize, _instruction: u8, _gas_cost: U256, _mem_written: Option<(usize, usize)>, _store_written: Option<(U256, U256)>) {}

+	/// Trace the execution failure of a single instruction.
+	fn trace_failed(&mut self) {}
+
 	/// Trace the finalised execution of a single instruction.
 	fn trace_executed(&mut self, _gas_used: U256, _stack_push: &[U256], _mem: &[u8]) {}

--- a/ethcore/vm/src/lib.rs
+++ b/ethcore/vm/src/lib.rs
@@ -22,7 +22,6 @@ extern crate ethjson;
 extern crate rlp;
 extern crate keccak_hash as hash;
 extern crate patricia_trie_ethereum as ethtrie;
-extern crate trie_db as trie;

 mod action_params;
 mod call_type;
--- a/ethcore/vm/src/return_data.rs
+++ b/ethcore/vm/src/return_data.rs
@@ -44,11 +44,7 @@ impl ReturnData {
 	}
 	/// Create `ReturnData` from give buffer and slice.
 	pub fn new(mem: Vec<u8>, offset: usize, size: usize) -> Self {
-		ReturnData {
-			mem: mem,
-			offset: offset,
-			size: size,
-		}
+		ReturnData { mem, offset, size }
 	}
 }

--- a/ethcore/vm/src/schedule.rs
+++ b/ethcore/vm/src/schedule.rs
@@ -15,8 +15,17 @@
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.

 //! Cost schedule and other parameterisations for the EVM.
+use std::collections::HashMap;
+use ethereum_types::U256;
+
+/// Definition of schedules that can be applied to a version.
+#[derive(Debug)]
+pub enum VersionedSchedule {
+	PWasm,
+}

 /// Definition of the cost schedule and other parameterisations for the EVM.
+#[derive(Debug)]
 pub struct Schedule {
 	/// Does it support exceptional failed code deposit
 	pub exceptional_failed_code_deposit: bool,
@@ -84,7 +93,7 @@ pub struct Schedule {
 	pub tx_create_gas: usize,
 	/// Additional cost for empty data transaction
 	pub tx_data_zero_gas: usize,
-	/// Aditional cost for non-empty data transaction
+	/// Additional cost for non-empty data transaction
 	pub tx_data_non_zero_gas: usize,
 	/// Gas price for copying memory
 	pub copy_gas: usize,
@@ -115,10 +124,16 @@ pub struct Schedule {
 	pub have_return_data: bool,
 	/// SHL, SHR, SAR opcodes enabled.
 	pub have_bitwise_shifting: bool,
+	/// CHAINID opcode enabled.
+	pub have_chain_id: bool,
+	/// SELFBALANCE opcode enabled.
+	pub have_selfbalance: bool,
 	/// Kill basic accounts below this balance if touched.
 	pub kill_dust: CleanDustMode,
 	/// Enable EIP-1283 rules
 	pub eip1283: bool,
+	/// Enable EIP-1706 rules
+	pub eip1706: bool,
 	/// VM execution does not increase null signed address nonce if this field is true.
 	pub keep_unsigned_nonce: bool,
 	/// Wasm extra schedule settings, if wasm activated
@@ -126,6 +141,7 @@ pub struct Schedule {
 }

 /// Wasm cost table
+#[derive(Debug)]
 pub struct WasmCosts {
 	/// Default opcode cost
 	pub regular: u32,
@@ -179,7 +195,7 @@ impl Default for WasmCosts {
 }

 /// Dust accounts cleanup mode.
-#[derive(PartialEq, Eq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum CleanDustMode {
 	/// Dust cleanup is disabled.
 	Off,
@@ -209,6 +225,8 @@ impl Schedule {
 			have_revert: false,
 			have_return_data: false,
 			have_bitwise_shifting: false,
+			have_chain_id: false,
+			have_selfbalance: false,
 			have_extcodehash: false,
 			stack_limit: 1024,
 			max_depth: 1024,
@@ -253,6 +271,7 @@ impl Schedule {
 			have_static_call: false,
 			kill_dust: CleanDustMode::Off,
 			eip1283: false,
+			eip1706: false,
 			keep_unsigned_nonce: false,
 			wasm: None,
 		}
@@ -275,6 +294,18 @@ impl Schedule {
 		schedule
 	}

+	/// Schedule for the Istanbul fork of the Ethereum main net.
+	pub fn new_istanbul() -> Schedule {
+		let mut schedule = Self::new_constantinople();
+		schedule.have_chain_id = true; // EIP 1344
+		schedule.tx_data_non_zero_gas = 16; // EIP 2028
+		schedule.sload_gas = 800; // EIP 1884
+		schedule.balance_gas = 700; // EIP 1884
+		schedule.extcodehash_gas = 700; // EIP 1884
+		schedule.have_selfbalance = true; // EIP 1884
+		schedule
+	}
+
 	fn new(efcd: bool, hdc: bool, tcg: usize) -> Schedule {
 		Schedule {
 			exceptional_failed_code_deposit: efcd,
@@ -283,6 +314,8 @@ impl Schedule {
 			have_revert: false,
 			have_return_data: false,
 			have_bitwise_shifting: false,
+			have_chain_id: false,
+			have_selfbalance: false,
 			have_extcodehash: false,
 			stack_limit: 1024,
 			max_depth: 1024,
@@ -327,6 +360,7 @@ impl Schedule {
 			have_static_call: false,
 			kill_dust: CleanDustMode::Off,
 			eip1283: false,
+			eip1706: false,
 			keep_unsigned_nonce: false,
 			wasm: None,
 		}
--- a/ethcore/vm/src/tests.rs
+++ b/ethcore/vm/src/tests.rs
@@ -67,6 +67,8 @@ pub struct FakeExt {
 	pub balances: HashMap<Address, U256>,
 	pub tracing: bool,
 	pub is_static: bool,
+
+	chain_id: u64,
 }

 // similar to the normal `finalize` function, but ignoring NeedsReturn.
@@ -98,11 +100,24 @@ impl FakeExt {
 		ext
 	}

+	/// New fake externalities with Istanbul schedule rules
+	pub fn new_istanbul() -> Self {
+		let mut ext = FakeExt::default();
+		ext.schedule = Schedule::new_istanbul();
+		ext
+	}
+
 	/// Alter fake externalities to allow wasm
 	pub fn with_wasm(mut self) -> Self {
 		self.schedule.wasm = Some(Default::default());
 		self
 	}
+
+	/// Set chain ID
+	pub fn with_chain_id(mut self, chain_id: u64) -> Self {
+		self.chain_id = chain_id;
+		self
+	}
 }

 impl Ext for FakeExt {
@@ -200,7 +215,7 @@ impl Ext for FakeExt {

 	fn log(&mut self, topics: Vec<H256>, data: &[u8]) -> Result<()> {
 		self.logs.push(FakeLogEntry {
-			topics: topics,
+			topics,
 			data: data.to_vec()
 		});
 		Ok(())
@@ -223,6 +238,10 @@ impl Ext for FakeExt {
 		&self.info
 	}

+	fn chain_id(&self) -> u64 {
+		self.chain_id
+	}
+
 	fn depth(&self) -> usize {
 		self.depth
 	}
--- a/ethcore/wasm/Cargo.toml
+++ b/ethcore/wasm/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "WASM Interpreter"
 name = "wasm"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/ethcore/wasm/run/Cargo.toml
+++ b/ethcore/wasm/run/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+description = "Parity WASM Test Run"
 name = "pwasm-run-test"
 version = "0.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
s3krit	c52a6c8fb7	update CHANGELOG.md (#11057 )	2019-09-16 12:00:04 +02:00
s3krit	7c7b181ca0	v2.5.8-stable (rev2) (#11051 ) * EIP 1884 Re-pricing of trie-size dependent operations (#10992) * Implement EIP-1283 reenable transition, EIP-1706 and EIP-2200 (#10191)	2019-09-13 15:46:03 +02:00
David	24a4fdf405	Don't build rpc with ethcore test-helpers (#11048 )	2019-09-13 11:53:49 +02:00
s3krit	45f27cec34	v2.5.8-stable (#11041 ) * add more tx tests (#11038) * Fix parallel transactions race-condition (#10995) * Add blake2_f precompile (#11017) * [trace] introduce trace failed to Ext (#11019) * Edit publish-onchain.sh to use https (#11016) * Fix deadlock in network-devp2p (#11013) * EIP 1108: Reduce alt_bn128 precompile gas costs (#11008) * xDai chain support and nodes list update (#10989) * EIP 2028: transaction gas lowered from 68 to 16 (#10987) * EIP-1344 Add CHAINID op-code (#10983) * manual publish jobs for releases, no changes for nightlies (#10977) * [blooms-db] Fix benchmarks (#10974) * Verify transaction against its block during import (#10954) * Better error message for rpc gas price errors (#10931) * tx-pool: accept local tx with higher gas price when pool full (#10901) * Fix fork choice (#10837) * Cleanup unused vm dependencies (#10787) * Fix compilation on recent nightlies (#10991)	2019-09-12 18:43:53 +02:00
s3krit	6bd7db96fe	v2.5.7 stable (#11006 ) * [trace] check mem diff within range (#11002) * Update version (v2.5.7-stable)	2019-08-29 12:06:49 +02:00
s3krit	ff398fe7ff	V2.5.6 stable (#10961 ) - Fix cargo audit (#10921) - Add support for Energy Web Foundation's new chains (#10957) - Kaspersky AV whitelisting (#10919) - Avast whitelist script (#10900) - Docker images renaming (#10863) - Remove excessive warning (#10831) - Allow --nat extip:your.host.here.org (#10830) - When updating the client or when called from RPC, sleep should mean sleep (#10814) - added new ropsten-bootnode and removed old one (#10794) - ethkey no longer uses byteorder (#10786) - Do not drop the peer with None difficulty (#10772) - docs: Update Readme with TOC, Contributor Guideline. Update Cargo package descriptions (#10652)	2019-08-12 18:55:11 +02:00