Merge branch 'stable' of github.com:paritytech/parity into stable

Bump stable version (#7665 )
* Update .gitlab-ci.yml fix cache:key * Bump stable to 1.8.7
2018-01-23 11:01:41 +01:00 · 2018-01-23 11:01:09 +01:00 · 2018-01-23 10:58:08 +01:00 · 2018-01-23 06:20:22 +03:00 · 2018-01-23 04:12:36 +03:00 · 2018-01-23 03:01:42 +03:00
149 changed files with 3448 additions and 2170 deletions
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,566 +4,196 @@ stages:
  - push-release
  - build
 variables:
-  GIT_DEPTH: "3"
-  SIMPLECOV: "true"
  RUST_BACKTRACE: "1"
  RUSTFLAGS: ""
  CARGOFLAGS: ""
  CI_SERVER_NAME: "GitLab CI"
+  LIBSSL: "libssl1.0.0 (>=1.0.0)"
+  CARGO_HOME: "$CI_PROJECT_DIR"
 cache:
-  key: "$CI_BUILD_STAGE/$CI_BUILD_REF_NAME"
+  key: "$CI_BUILD_STAGE-$CI_BUILD_REF_NAME"
+  paths:
+    - target
  untracked: true
 linux-stable:
  stage: build
  image: parity/rust:gitlab-ci
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
  script:
    - rustup default stable
-    - cargo build -j $(nproc) --release --features final $CARGOFLAGS
-    - cargo build -j $(nproc) --release -p evmbin
-    - cargo build -j $(nproc) --release -p ethstore-cli
-    - cargo build -j $(nproc) --release -p ethkey-cli
-    - strip target/release/parity
-    - strip target/release/parity-evm
-    - strip target/release/ethstore
-    - strip target/release/ethkey
-    - export SHA3=$(target/release/parity tools hash target/release/parity)
-    - md5sum target/release/parity > parity.md5
-    - sh scripts/deb-build.sh amd64
-    - cp target/release/parity deb/usr/bin/parity
-    - cp target/release/parity-evm deb/usr/bin/parity-evm
-    - cp target/release/ethstore deb/usr/bin/ethstore
-    - cp target/release/ethkey deb/usr/bin/ethkey
-    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
-    - dpkg-deb -b deb "parity_"$VER"_amd64.deb"
-    - md5sum "parity_"$VER"_amd64.deb" > "parity_"$VER"_amd64.deb.md5"
-    - aws configure set aws_access_key_id $s3_key
-    - aws configure set aws_secret_access_key $s3_secret
-    - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/parity --body target/release/parity
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.deb" --body "parity_"$VER"_amd64.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.deb.md5" --body "parity_"$VER"_amd64.deb.md5"
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu
+    # ARGUMENTS: 1. BUILD_PLATFORM (target for binaries) 2. PLATFORM (target for cargo) 3. ARC (architecture) 4. & 5. CC & CXX flags
+    - scripts/gitlab-build.sh x86_64-unknown-linux-gnu x86_64-unknown-linux-gnu amd64 gcc g++
  tags:
-    - rust
    - rust-stable
  artifacts:
    paths:
-    - target/release/parity
-    - target/release/parity-evm
-    - target/release/ethstore
-    - target/release/ethkey
+    - parity.zip
    name: "stable-x86_64-unknown-linux-gnu_parity"
-linux-snap:
-  stage: build
-  image: parity/snapcraft:gitlab-ci
-  only:
-    - snap
-    - beta
-    - tags
-    - triggers
-  script:
-    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
-    - cd snap
-    - rm -rf *snap
-    - sed -i 's/master/'"$VER"'/g' snapcraft.yaml
-    - echo "Version:"$VER
-    - snapcraft
-    - ls
-    - cp "parity_"$CI_BUILD"_REF_NAME_amd64.snap" "parity_"$VER"_amd64.snap"
-    - md5sum "parity_"$VER"_amd64.snap" > "parity_"$VER"_amd64.snap.md5"
-    - aws configure set aws_access_key_id $s3_key
-    - aws configure set aws_secret_access_key $s3_secret
-    - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.snap" --body "parity_"$VER"_amd64.snap"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu/"parity_"$VER"_amd64.snap.md5" --body "parity_"$VER"_amd64.snap.md5"
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/x86_64-unknown-linux-gnu
-  tags:
-    - rust
-    - rust-stable
-  artifacts:
-    paths:
-    - scripts/parity_*_amd64.snap
-    name: "stable-x86_64-unknown-snap-gnu_parity"
-  allow_failure: true  
 linux-stable-debian:
  stage: build
  image: parity/rust-debian:gitlab-ci
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
  script:
-    - cargo build -j $(nproc) --release --features final $CARGOFLAGS
-    - cargo build -j $(nproc) --release -p evmbin
-    - cargo build -j $(nproc) --release -p ethstore-cli
-    - cargo build -j $(nproc) --release -p ethkey-cli
-    - strip target/release/parity
-    - strip target/release/parity-evm
-    - strip target/release/ethstore
-    - strip target/release/ethkey
-    - export SHA3=$(target/release/parity tools hash target/release/parity)
-    - md5sum target/release/parity > parity.md5
-    - sh scripts/deb-build.sh amd64
-    - cp target/release/parity deb/usr/bin/parity
-    - cp target/release/parity-evm deb/usr/bin/parity-evm
-    - cp target/release/ethstore deb/usr/bin/ethstore
-    - cp target/release/ethkey deb/usr/bin/ethkey
-    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
-    - dpkg-deb -b deb "parity_"$VER"_amd64.deb"
-    - md5sum "parity_"$VER"_amd64.deb" > "parity_"$VER"_amd64.deb.md5"
-    - aws configure set aws_access_key_id $s3_key
-    - aws configure set aws_secret_access_key $s3_secret
-    - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/x86_64-unknown-debian-gnu
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-debian-gnu/parity --body target/release/parity
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-debian-gnu/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-debian-gnu/"parity_"$VER"_amd64.deb" --body "parity_"$VER"_amd64.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/x86_64-unknown-debian-gnu/"parity_"$VER"_amd64.deb.md5" --body "parity_"$VER"_amd64.deb.md5"
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/x86_64-unknown-debian-gnu
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/x86_64-unknown-debian-gnu
+    - export LIBSSL="libssl1.1 (>=1.1.0)"
+    - scripts/gitlab-build.sh x86_64-unknown-debian-gnu x86_64-unknown-linux-gnu amd64 gcc g++
  tags:
-    - rust
    - rust-debian
  artifacts:
    paths:
-    - target/release/parity
+    - parity.zip
    name: "stable-x86_64-unknown-debian-gnu_parity"
-linux-beta:
-  stage: build
-  image: parity/rust:gitlab-ci
-  only:
-    - beta
-    - tags
-    - stable
-    - triggers
-  script:
-    - rustup default beta
-    - cargo build -j $(nproc) --release $CARGOFLAGS
-    - strip target/release/parity
-  tags:
-    - rust
-    - rust-beta
-  artifacts:
-    paths:
-    - target/release/parity
-    name: "beta-x86_64-unknown-linux-gnu_parity"
-  allow_failure: true
-linux-nightly:
-  stage: build
-  image: parity/rust:gitlab-ci
-  only:
-    - beta
-    - tags
-    - stable
-    - triggers
-  script:
-    - rustup default nightly
-    - cargo build -j $(nproc) --release $CARGOFLAGS
-    - strip target/release/parity
-  tags:
-    - rust
-    - rust-nightly
-  artifacts:
-    paths:
-    - target/release/parity
-    name: "nigthly-x86_64-unknown-linux-gnu_parity"
-  allow_failure: true
 linux-centos:
  stage: build
  image: parity/rust-centos:gitlab-ci
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
  script:
-    - export CXX="g++"
-    - export CC="gcc"
-    - export PLATFORM=x86_64-unknown-centos-gnu
-    - cargo build -j $(nproc) --release --features final $CARGOFLAGS
-    - cargo build -j $(nproc) --release -p evmbin
-    - cargo build -j $(nproc) --release -p ethstore-cli
-    - cargo build -j $(nproc) --release -p ethkey-cli
-    - strip target/release/parity
-    - strip target/release/parity-evm
-    - strip target/release/ethstore
-    - strip target/release/ethkey
-    - md5sum target/release/parity > parity.md5
-    - md5sum target/release/parity-evm > parity-evm.md5
-    - md5sum target/release/ethstore > ethstore.md5
-    - md5sum target/release/ethkey > ethkey.md5
-    - export SHA3=$(target/release/parity tools hash target/release/parity)
-    - aws configure set aws_access_key_id $s3_key
-    - aws configure set aws_secret_access_key $s3_secret
-    - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/parity --body target/release/parity
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/parity-evm --body target/release/parity-evm
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/parity-evm.md5 --body parity-evm.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/ethstore --body target/release/ethstore
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/ethstore.md5 --body ethstore.md5
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/ethkey --body target/release/ethkey
-    - aws s3api put-object --bucket builds-parity --key $CI_BUILD_REF_NAME/x86_64-unknown-centos-gnu/ethkey.md5 --body ethkey.md5
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - scripts/gitlab-build.sh x86_64-unknown-centos-gnu x86_64-unknown-linux-gnu x86_64 gcc g++
  tags:
-    - rust
    - rust-centos
  artifacts:
    paths:
-    - target/release/parity
+    - parity.zip
    name: "x86_64-unknown-centos-gnu_parity"
 linux-i686:
  stage: build
  image: parity/rust-i686:gitlab-ci
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
  script:
-    - export HOST_CC=gcc
-    - export HOST_CXX=g++
-    - export COMMIT=$(git rev-parse HEAD)
-    - export PLATFORM=i686-unknown-linux-gnu
-    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
-    - cargo build -j $(nproc) --target $PLATFORM --release -p evmbin
-    - cargo build -j $(nproc) --target $PLATFORM --release -p ethstore-cli
-    - cargo build -j $(nproc) --target $PLATFORM --release -p ethkey-cli
-    - strip target/$PLATFORM/release/parity
-    - strip target/$PLATFORM/release/parity-evm
-    - strip target/$PLATFORM/release/ethstore
-    - strip target/$PLATFORM/release/ethkey   
-    - strip target/$PLATFORM/release/parity
-    - md5sum target/$PLATFORM/release/parity > parity.md5
-    - export SHA3=$(target/$PLATFORM/release/parity tools hash target/$PLATFORM/release/parity)
-    - sh scripts/deb-build.sh i386
-    - cp target/$PLATFORM/release/parity deb/usr/bin/parity
-    - cp target/$PLATFORM/release/parity-evm deb/usr/bin/parity-evm
-    - cp target/$PLATFORM/release/ethstore deb/usr/bin/ethstore
-    - cp target/$PLATFORM/release/ethkey deb/usr/bin/ethkey
-    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
-    - dpkg-deb -b deb "parity_"$VER"_i386.deb"
-    - md5sum "parity_"$VER"_i386.deb" > "parity_"$VER"_i386.deb.md5"
-    - aws configure set aws_access_key_id $s3_key
-    - aws configure set aws_secret_access_key $s3_secret
-    - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity --body target/$PLATFORM/release/parity
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_i386.deb" --body "parity_"$VER"_i386.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_i386.deb.md5" --body "parity_"$VER"_i386.deb.md5"
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - scripts/gitlab-build.sh i686-unknown-linux-gnu i686-unknown-linux-gnu i386 gcc g++
  tags:
-    - rust
    - rust-i686
  artifacts:
    paths:
-      - target/i686-unknown-linux-gnu/release/parity
+      - parity.zip
    name: "i686-unknown-linux-gnu"
-  allow_failure: true
 linux-armv7:
  stage: build
  image: parity/rust-armv7:gitlab-ci
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
  script:
-    - export CC=arm-linux-gnueabihf-gcc
-    - export CXX=arm-linux-gnueabihf-g++
-    - export HOST_CC=gcc
-    - export HOST_CXX=g++
-    - export PLATFORM=armv7-unknown-linux-gnueabihf
-    - rm -rf .cargo
-    - mkdir -p .cargo
-    - echo "[target.$PLATFORM]" >> .cargo/config
-    - echo "linker= \"arm-linux-gnueabihf-gcc\"" >> .cargo/config
-    - cat .cargo/config
-    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
-    - cargo build -j $(nproc) --target $PLATFORM --release -p evmbin
-    - cargo build -j $(nproc) --target $PLATFORM --release -p ethstore-cli
-    - cargo build -j $(nproc) --target $PLATFORM --release -p ethkey-cli
-    - md5sum target/$PLATFORM/release/parity > parity.md5
-    - export SHA3=$(target/$PLATFORM/release/parity tools hash target/$PLATFORM/release/parity)
-    - sh scripts/deb-build.sh i386
-    - arm-linux-gnueabihf-strip target/$PLATFORM/release/parity
-    - arm-linux-gnueabihf-strip target/$PLATFORM/release/parity-evm
-    - arm-linux-gnueabihf-strip target/$PLATFORM/release/ethstore
-    - arm-linux-gnueabihf-strip target/$PLATFORM/release/ethkey
-    - export SHA3=$(rhash --sha3-256 target/$PLATFORM/release/parity -p %h)
-    - md5sum target/$PLATFORM/release/parity > parity.md5
-    - sh scripts/deb-build.sh armhf
-    - cp target/$PLATFORM/release/parity deb/usr/bin/parity
-    - cp target/$PLATFORM/release/parity-evm deb/usr/bin/parity-evm
-    - cp target/$PLATFORM/release/ethstore deb/usr/bin/ethstore
-    - cp target/$PLATFORM/release/ethkey deb/usr/bin/ethkey
-    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
-    - dpkg-deb -b deb "parity_"$VER"_armhf.deb"
-    - md5sum "parity_"$VER"_armhf.deb" > "parity_"$VER"_armhf.deb.md5"
-    - aws configure set aws_access_key_id $s3_key
-    - aws configure set aws_secret_access_key $s3_secret
-    - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity --body target/$PLATFORM/release/parity
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - scripts/gitlab-build.sh armv7-unknown-linux-gnueabihf armv7-unknown-linux-gnueabihf armhf arm-linux-gnueabihf-gcc arm-linux-gnueabihf-g++
  tags:
-    - rust
    - rust-arm
  artifacts:
    paths:
-    - target/armv7-unknown-linux-gnueabihf/release/parity
+    - parity.zip
    name: "armv7_unknown_linux_gnueabihf_parity"
-  allow_failure: true
 linux-arm:
  stage: build
  image: parity/rust-arm:gitlab-ci
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
  script:
-    - export CC=arm-linux-gnueabihf-gcc
-    - export CXX=arm-linux-gnueabihf-g++
-    - export HOST_CC=gcc
-    - export HOST_CXX=g++
-    - export PLATFORM=arm-unknown-linux-gnueabihf
-    - rm -rf .cargo
-    - mkdir -p .cargo
-    - echo "[target.$PLATFORM]" >> .cargo/config
-    - echo "linker= \"arm-linux-gnueabihf-gcc\"" >> .cargo/config
-    - cat .cargo/config
-    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
-    - cargo build -j $(nproc) --target $PLATFORM --release -p evmbin
-    - cargo build -j $(nproc) --target $PLATFORM --release -p ethstore-cli
-    - cargo build -j $(nproc) --target $PLATFORM --release -p ethkey-cli
-    - arm-linux-gnueabihf-strip target/$PLATFORM/release/parity
-    - arm-linux-gnueabihf-strip target/$PLATFORM/release/parity-evm
-    - arm-linux-gnueabihf-strip target/$PLATFORM/release/ethstore
-    - arm-linux-gnueabihf-strip target/$PLATFORM/release/ethkey
-    - export SHA3=$(rhash --sha3-256 target/$PLATFORM/release/parity -p %h)
-    - md5sum target/$PLATFORM/release/parity > parity.md5
-    - sh scripts/deb-build.sh armhf
-    - cp target/$PLATFORM/release/parity deb/usr/bin/parity
-    - cp target/$PLATFORM/release/parity-evm deb/usr/bin/parity-evm
-    - cp target/$PLATFORM/release/ethstore deb/usr/bin/ethstore
-    - cp target/$PLATFORM/release/ethkey deb/usr/bin/ethkey
-    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
-    - dpkg-deb -b deb "parity_"$VER"_armhf.deb"
-    - md5sum "parity_"$VER"_armhf.deb" > "parity_"$VER"_armhf.deb.md5"
-    - aws configure set aws_access_key_id $s3_key
-    - aws configure set aws_secret_access_key $s3_secret
-    - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity --body target/$PLATFORM/release/parity
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb" --body "parity_"$VER"_armhf.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_armhf.deb.md5" --body "parity_"$VER"_armhf.deb.md5"
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - scripts/gitlab-build.sh arm-unknown-linux-gnueabihf arm-unknown-linux-gnueabihf armhf arm-linux-gnueabihf-gcc arm-linux-gnueabihf-g++
  tags:
-    - rust
    - rust-arm
  artifacts:
    paths:
-    - target/arm-unknown-linux-gnueabihf/release/parity
+    - parity.zip
    name: "arm-unknown-linux-gnueabihf_parity"
-  allow_failure: true
 linux-aarch64:
  stage: build
  image: parity/rust-arm64:gitlab-ci
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
  script:
-    - export CC=aarch64-linux-gnu-gcc
-    - export CXX=aarch64-linux-gnu-g++
-    - export HOST_CC=gcc
-    - export HOST_CXX=g++
-    - export PLATFORM=aarch64-unknown-linux-gnu
-    - rm -rf .cargo
-    - mkdir -p .cargo
-    - echo "[target.$PLATFORM]" >> .cargo/config
-    - echo "linker= \"aarch64-linux-gnu-gcc\"" >> .cargo/config
-    - cat .cargo/config
-    - cargo build -j $(nproc) --target $PLATFORM --features final --release $CARGOFLAGS
-    - cargo build -j $(nproc) --target $PLATFORM --release -p evmbin
-    - cargo build -j $(nproc) --target $PLATFORM --release -p ethstore-cli
-    - cargo build -j $(nproc) --target $PLATFORM --release -p ethkey-cli
-    - aarch64-linux-gnu-strip target/$PLATFORM/release/parity
-    - aarch64-linux-gnu-strip target/$PLATFORM/release/parity-evm
-    - aarch64-linux-gnu-strip target/$PLATFORM/release/ethstore
-    - aarch64-linux-gnu-strip target/$PLATFORM/release/ethkey
-    - export SHA3=$(rhash --sha3-256 target/$PLATFORM/release/parity -p %h)
-    - md5sum target/$PLATFORM/release/parity > parity.md5
-    - sh scripts/deb-build.sh arm64
-    - cp target/$PLATFORM/release/parity deb/usr/bin/parity
-    - cp target/$PLATFORM/release/parity-evm deb/usr/bin/parity-evm
-    - cp target/$PLATFORM/release/ethstore deb/usr/bin/ethstore
-    - cp target/$PLATFORM/release/ethkey deb/usr/bin/ethkey
-    - export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
-    - dpkg-deb -b deb "parity_"$VER"_arm64.deb"
-    - md5sum "parity_"$VER"_arm64.deb" > "parity_"$VER"_arm64.deb.md5"
-    - aws configure set aws_access_key_id $s3_key
-    - aws configure set aws_secret_access_key $s3_secret
-    - if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-    - aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_arm64.deb" --body "parity_"$VER"_arm64.deb"
-    - aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity_"$VER"_arm64.deb.md5" --body "parity_"$VER"_arm64.deb.md5"
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
-    - curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+    - scripts/gitlab-build.sh aarch64-unknown-linux-gnu aarch64-unknown-linux-gnu arm64 aarch64-linux-gnu-gcc aarch64-linux-gnu-g++
  tags:
-    - rust
    - rust-arm
  artifacts:
    paths:
-    - target/aarch64-unknown-linux-gnu/release/parity
+    - parity.zip
    name: "aarch64-unknown-linux-gnu_parity"
+linux-snap:
+  stage: build
+  image: parity/snapcraft:gitlab-ci
+  only:
+    - stable
+    - beta
+    - tags
+    - triggers
+  script:
+    - scripts/gitlab-build.sh x86_64-unknown-snap-gnu x86_64-unknown-linux-gnu amd64 gcc g++
+  tags:
+    - rust-stable
+  artifacts:
+    paths:
+    - scripts/parity_*_amd64.snap
+    name: "stable-x86_64-unknown-snap-gnu_parity"
  allow_failure: true
 darwin:
  stage: build
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
-  script: |
-      export COMMIT=$(git rev-parse HEAD)
-      export PLATFORM=x86_64-apple-darwin
-      rustup default stable
-      cargo clean
-      cargo build -j 8 --features final --release #$CARGOFLAGS
-      cargo build -j 8 --release -p ethstore-cli #$CARGOFLAGS
-      cargo build -j 8 --release -p ethkey-cli #$CARGOFLAGS
-      cargo build -j 8 --release -p evmbin #$CARGOFLAGS
-      rm -rf parity.md5
-      md5sum target/release/parity > parity.md5
-      export SHA3=$(target/release/parity tools hash target/release/parity)
-      cd mac
-      xcodebuild -configuration Release
-      cd ..
-      packagesbuild -v mac/Parity.pkgproj
-      productsign --sign 'Developer ID Installer: PARITY TECHNOLOGIES LIMITED (P2PX3JU8FT)' target/release/Parity\ Ethereum.pkg target/release/Parity\ Ethereum-signed.pkg
-      export VER=$(grep -m 1 version Cargo.toml | awk '{print $3}' | tr -d '"' | tr -d "\n")
-      mv target/release/Parity\ Ethereum-signed.pkg "parity-"$VER"-macos-installer.pkg"
-      md5sum "parity-"$VER"-macos-installer.pkg" >> "parity-"$VER"-macos-installer.pkg.md5"
-      aws configure set aws_access_key_id $s3_key
-      aws configure set aws_secret_access_key $s3_secret
-      if [[ $CI_BUILD_REF_NAME =~ ^(master|beta|stable|nightly)$ ]]; then export S3_BUCKET=builds-parity-published; else export S3_BUCKET=builds-parity; fi
-      aws s3 rm --recursive s3://$S3_BUCKET/$CI_BUILD_REF_NAME/$PLATFORM
-      aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity --body target/release/parity
-      aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/parity.md5 --body parity.md5
-      aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity-"$VER"-macos-installer.pkg" --body "parity-"$VER"-macos-installer.pkg"
-      aws s3api put-object --bucket $S3_BUCKET --key $CI_BUILD_REF_NAME/$PLATFORM/"parity-"$VER"-macos-installer.pkg.md5" --body "parity-"$VER"-macos-installer.pkg.md5"
-      curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1337/push-build/$CI_BUILD_REF_NAME/$PLATFORM
-      curl --data "commit=$CI_BUILD_REF&sha3=$SHA3&filename=parity&secret=$RELEASES_SECRET" http://update.parity.io:1338/push-build/$CI_BUILD_REF_NAME/$PLATFORM
+  script:
+    - scripts/gitlab-build.sh x86_64-apple-darwin x86_64-apple-darwin macos gcc g++
  tags:
    - osx
  artifacts:
    paths:
-    - target/release/parity
+    - parity.zip
    name: "x86_64-apple-darwin_parity"
 windows:
  cache:
-    key: "%CI_BUILD_STAGE%/%CI_BUILD_REF_NAME%"
+    key: "%CI_BUILD_STAGE%-%CI_BUILD_REF_NAME%"
    untracked: true
  stage: build
  only:
+    - stable
    - beta
    - tags
-    - stable
    - triggers
  script:
-    - set PLATFORM=x86_64-pc-windows-msvc
-    - set INCLUDE=C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Include;C:\vs2015\VC\include;C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt
-    - set LIB=C:\vs2015\VC\lib;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.10240.0\ucrt\x64
-    - set RUST_BACKTRACE=1
-    - set RUSTFLAGS=%RUSTFLAGS%
-    - rustup default stable-x86_64-pc-windows-msvc
-    - cargo clean
-    - cargo build --features final --release #%CARGOFLAGS%
-    - cargo build --release -p ethstore-cli #%CARGOFLAGS%
-    - cargo build --release -p ethkey-cli #%CARGOFLAGS%
-    - cargo build --release -p evmbin #%CARGOFLAGS%
-    - signtool sign /f %keyfile% /p %certpass% target\release\parity.exe
-    - target\release\parity.exe tools hash target\release\parity.exe > parity.sha3
-    - set /P SHA3=<parity.sha3
-    - curl -sL --url "https://github.com/paritytech/win-build/raw/master/SimpleFC.dll" -o nsis\SimpleFC.dll
-    - curl -sL --url "https://github.com/paritytech/win-build/raw/master/vc_redist.x64.exe" -o nsis\vc_redist.x64.exe
-    - msbuild windows\ptray\ptray.vcxproj /p:Platform=x64 /p:Configuration=Release
-    - signtool sign /f %keyfile% /p %certpass% windows\ptray\x64\release\ptray.exe
-    - cd nsis
-    - makensis.exe installer.nsi
-    - copy installer.exe InstallParity.exe
-    - signtool sign /f %keyfile% /p %certpass% InstallParity.exe
-    - md5sums InstallParity.exe > InstallParity.exe.md5
-    - zip win-installer.zip InstallParity.exe InstallParity.exe.md5
-    - md5sums win-installer.zip > win-installer.zip.md5
-    - cd ..\target\release\
-    - md5sums parity.exe > parity.exe.md5
-    - zip parity.zip parity.exe parity.md5
-    - md5sums parity.zip > parity.zip.md5
-    - cd ..\..
-    - aws configure set aws_access_key_id %s3_key%
-    - aws configure set aws_secret_access_key %s3_secret%
-    - echo %CI_BUILD_REF_NAME%
-    - echo %CI_BUILD_REF_NAME% | findstr /R "master" >nul 2>&1 && set S3_BUCKET=builds-parity-published|| set S3_BUCKET=builds-parity
-    - echo %CI_BUILD_REF_NAME% | findstr /R "beta" >nul 2>&1 && set S3_BUCKET=builds-parity-published|| set S3_BUCKET=builds-parity
-    - echo %CI_BUILD_REF_NAME% | findstr /R "stable" >nul 2>&1 && set S3_BUCKET=builds-parity-published|| set S3_BUCKET=builds-parity
-    - echo %CI_BUILD_REF_NAME% | findstr /R "nightly" >nul 2>&1 && set S3_BUCKET=builds-parity-published|| set S3_BUCKET=builds-parity
-    - echo %S3_BUCKET%
-    - aws s3 rm --recursive s3://%S3_BUCKET%/%CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc
-    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.exe --body target\release\parity.exe
-    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.exe.md5 --body target\release\parity.exe.md5
-    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.zip --body target\release\parity.zip
-    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/parity.zip.md5 --body target\release\parity.zip.md5
-    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/InstallParity.exe --body nsis\InstallParity.exe
-    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/InstallParity.exe.md5 --body nsis\InstallParity.exe.md5
-    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/win-installer.zip --body nsis\win-installer.zip
-    - aws s3api put-object --bucket %S3_BUCKET% --key %CI_BUILD_REF_NAME%/x86_64-pc-windows-msvc/win-installer.zip.md5 --body nsis\win-installer.zip.md5
-    - curl --data "commit=%CI_BUILD_REF%&sha3=%SHA3%&filename=parity.exe&secret=%RELEASES_SECRET%" http://update.parity.io:1337/push-build/%CI_BUILD_REF_NAME%/%PLATFORM%
-    - curl --data "commit=%CI_BUILD_REF%&sha3=%SHA3%&filename=parity.exe&secret=%RELEASES_SECRET%" http://update.parity.io:1338/push-build/%CI_BUILD_REF_NAME%/%PLATFORM%
+    - sh scripts/gitlab-build.sh x86_64-pc-windows-msvc x86_64-pc-windows-msvc installer "" "" ""
  tags:
   - rust-windows
  artifacts:
    paths:
-    - target/release/parity.exe
-    - target/release/parity.pdb
-    - nsis/InstallParity.exe
+    - parity.zip
    name: "x86_64-pc-windows-msvc_parity"
 docker-build:
  stage: build
  only:
+    - stable
+    - beta
    - tags
    - triggers
  before_script:
    - docker info
  script:
-    - if [ "$CI_BUILD_REF_NAME" == "beta-release" ]; then DOCKER_TAG="latest"; else DOCKER_TAG=$CI_BUILD_REF_NAME; fi
+    - DOCKER_TAG=$CI_BUILD_REF_NAME
    - echo "Tag:" $DOCKER_TAG
    - docker login -u $Docker_Hub_User_Parity -p $Docker_Hub_Pass_Parity
-    - sh scripts/docker-build.sh $DOCKER_TAG
+    - scripts/docker-build.sh $DOCKER_TAG
    - docker logout
  tags:
    - docker
@@ -572,65 +202,16 @@ test-coverage:
  only:
    - master
  script:
-    - git submodule update --init --recursive
-    - rm -rf target/*
-    - rm -rf js/.coverage
-    - scripts/cov.sh
- #   - COVERAGE=$(grep -Po 'covered":.*?[^\\]"' target/cov/index.json | grep "[0-9]*\.[0-9]" -o)
- #   - echo "Coverage:" $COVERAGE
+    - scripts/gitlab-test.sh test-coverage
  tags:
    - kcov
  allow_failure: true
-test-darwin:
-  stage: test
-  only:
-    - triggers
-  before_script:
-    - git submodule update --init --recursive
-    - export RUST_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep -v -e "^js/" -e ^\\. -e ^LICENSE -e ^README.md -e ^appveyor.yml -e ^test.sh -e ^windows/ -e ^scripts/ -e^mac/ -e ^nsis/ | wc -l)
-  script:
-    - export RUST_BACKTRACE=1
-    - if [ $RUST_FILES_MODIFIED -eq 0 ]; then echo "Skipping Rust tests since no Rust files modified."; else ./test.sh $CARGOFLAGS; fi
-  tags:
-    - osx
-  allow_failure: true
-test-windows:
-  stage: test
-  only:
-    - triggers
-  before_script:
-    - git submodule update --init --recursive
-  script:
-    - set RUST_BACKTRACE=1
-    - echo cargo test --features json-tests -p rlp -p ethash -p ethcore -p ethcore-bigint -p parity-dapps -p parity-rpc -p ethcore-util -p ethcore-network -p ethcore-io -p ethkey -p ethstore -p ethsync -p ethcore-ipc -p ethcore-ipc-tests -p ethcore-ipc-nano -p parity-rpc-client -p parity %CARGOFLAGS% --verbose --release
-  tags:
-    - rust-windows
-  allow_failure: true
 test-rust-stable:
  stage: test
  image: parity/rust:gitlab-ci
-  before_script:
-    - git submodule update --init --recursive
-    - export RUST_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep -v -e ^js -e ^\\. -e ^LICENSE -e ^README.md -e ^test.sh -e ^windows/ -e ^scripts/ -e^mac/ -e ^nsis/ | wc -l)
  script:
-    - rustup show
-    - export RUST_BACKTRACE=1
-    - if [ $RUST_FILES_MODIFIED -eq 0 ]; then echo "Skipping Rust tests since no Rust files modified."; else ./test.sh $CARGOFLAGS; fi
-    - if [ "$CI_BUILD_REF_NAME" == "nightly" ]; then sh scripts/aura-test.sh; fi
+    - scripts/gitlab-test.sh stable
  tags:
-    - rust
-    - rust-stable
-js-test:
-  stage: test
-  image: parity/rust:gitlab-ci
-  before_script:
-    - git submodule update --init --recursive
-    - export JS_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep ^js/ | wc -l)
-    - if [ $JS_FILES_MODIFIED -eq 0 ]; then echo "Skipping JS deps install since no JS files modified."; else ./js/scripts/install-deps.sh;fi
-  script:
-    - if [ $JS_FILES_MODIFIED -eq 0 ]; then echo "Skipping JS lint since no JS files modified."; else ./js/scripts/lint.sh && ./js/scripts/test.sh && ./js/scripts/build.sh; fi
-  tags:
-    - rust
    - rust-stable
 test-rust-beta:
  stage: test
@@ -638,15 +219,9 @@ test-rust-beta:
    - triggers
    - master
  image: parity/rust:gitlab-ci
-  before_script:
-    - git submodule update --init --recursive
-    - export RUST_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep -v -e ^js -e ^\\. -e ^LICENSE -e ^README.md -e ^appveyor.yml -e ^test.sh -e ^windows/ -e ^scripts/ -e^mac/ -e ^nsis/ | wc -l)
  script:
-    - rustup default beta
-    - export RUST_BACKTRACE=1
-    - if [ $RUST_FILES_MODIFIED -eq 0 ]; then echo "Skipping Rust tests since no Rust files modified."; else ./test.sh $CARGOFLAGS; fi
+    - scripts/gitlab-test.sh beta
  tags:
-    - rust
    - rust-beta
  allow_failure: true
 test-rust-nightly:
@@ -655,34 +230,30 @@ test-rust-nightly:
    - triggers
    - master
  image: parity/rust:gitlab-ci
-  before_script:
-    - git submodule update --init --recursive
-    - export RUST_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep -v -e ^js -e ^\\. -e ^LICENSE -e ^README.md -e ^appveyor.yml -e ^test.sh -e ^windows/ -e ^scripts/ -e^mac/ -e ^nsis/ | wc -l)
  script:
-    - rustup default nightly
-    - export RUST_BACKTRACE=1
-    - if [ $RUST_FILES_MODIFIED -eq 0 ]; then echo "Skipping Rust tests since no Rust files modified."; else ./test.sh $CARGOFLAGS; fi
+    - scripts/gitlab-test.sh nightly
  tags:
    - rust
    - rust-nightly
  allow_failure: true
+js-test:
+  stage: test
+  image: parity/rust:gitlab-ci
+  script:
+    - scripts/gitlab-test.sh js-test
+  tags:
+    - rust-stable
 js-release:
  stage: js-build
  only:
    - master
-    - beta
    - stable
+    - beta
    - tags
    - triggers
  image: parity/rust:gitlab-ci
-  before_script:
-    - export JS_FILES_MODIFIED=$(git --no-pager diff --name-only $CI_BUILD_REF^ $CI_BUILD_REF | grep ^js/ | wc -l)
-    - echo $JS_FILES_MODIFIED
-    - if [ $JS_FILES_MODIFIED -eq 0  ]; then echo "Skipping JS deps install since no JS files modified."; else ./js/scripts/install-deps.sh;fi
  script:
-    - rustup default stable
-    - echo $JS_FILES_MODIFIED
-    - if [ $JS_FILES_MODIFIED -eq 0 ]; then echo "Skipping JS rebuild since no JS files modified."; else ./js/scripts/build.sh && ./js/scripts/release.sh; fi
+    - scripts/gitlab-test.sh js-release
  tags:
    - javascript
 push-release:
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -233,6 +233,9 @@ dependencies = [
 name = "cc"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rayon 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]

 [[package]]
 name = "cfg-if"
@@ -360,7 +363,7 @@ dependencies = [
 "bloomable 0.1.0",
 "ethcore-bigint 0.1.3",
 "ethcore-bytes 0.1.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethjson 0.1.0",
 "hash 0.1.0",
 "heapsize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -574,7 +577,7 @@ dependencies = [
 "ethcore-ipc-nano 1.8.0",
 "ethcore-logger 1.8.0",
 "ethcore-stratum 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethjson 0.1.0",
 "ethkey 0.2.0",
 "ethstore 0.1.0",
@@ -587,6 +590,8 @@ dependencies = [
 "hyper 0.10.0-a.0 (git+https://github.com/paritytech/hyper)",
 "itertools 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "kvdb 0.1.0",
+ "kvdb-memorydb 0.1.0",
+ "kvdb-rocksdb 0.1.0",
 "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "linked-hash-map 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -596,7 +601,7 @@ dependencies = [
 "migration 0.1.0",
 "native-contracts 0.1.0",
 "num 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "parity-machine 0.1.0",
 "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "patricia_trie 0.1.0",
@@ -668,7 +673,7 @@ version = "1.8.0"
 dependencies = [
 "ethcore-bigint 0.1.3",
 "ethcore-devtools 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "nanomsg 0.5.1 (git+https://github.com/paritytech/nanomsg.rs.git?branch=parity-1.7)",
 "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -718,7 +723,7 @@ dependencies = [
 "ethcore-ipc 1.8.0",
 "ethcore-ipc-codegen 1.8.0",
 "ethcore-ipc-nano 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "nanomsg 0.5.1 (git+https://github.com/paritytech/nanomsg.rs.git?branch=parity-1.7)",
 "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -737,13 +742,15 @@ dependencies = [
 "ethcore-ipc 1.8.0",
 "ethcore-ipc-codegen 1.8.0",
 "ethcore-network 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "evm 0.1.0",
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "hash 0.1.0",
 "heapsize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "itertools 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "kvdb 0.1.0",
+ "kvdb-memorydb 0.1.0",
+ "kvdb-rocksdb 0.1.0",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "memorydb 0.1.0",
 "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -787,7 +794,7 @@ dependencies = [
 "ethcore-devtools 1.8.0",
 "ethcore-io 1.8.0",
 "ethcore-logger 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethcrypto 0.1.0",
 "ethkey 0.2.0",
 "hash 0.1.0",
@@ -822,7 +829,7 @@ dependencies = [
 "ethcore-ipc-codegen 1.8.0",
 "ethcore-ipc-nano 1.8.0",
 "ethcore-logger 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethcrypto 0.1.0",
 "ethkey 0.2.0",
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -830,6 +837,7 @@ dependencies = [
 "hash 0.1.0",
 "hyper 0.10.13 (registry+https://github.com/rust-lang/crates.io-index)",
 "kvdb 0.1.0",
+ "kvdb-rocksdb 0.1.0",
 "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "native-contracts 0.1.0",
@@ -857,7 +865,7 @@ dependencies = [
 "ethcore-ipc-codegen 1.8.0",
 "ethcore-ipc-nano 1.8.0",
 "ethcore-logger 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "hash 0.1.0",
 "jsonrpc-core 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
 "jsonrpc-macros 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
@@ -870,7 +878,7 @@ dependencies = [

 [[package]]
 name = "ethcore-util"
-version = "1.8.3"
+version = "1.8.7"
 dependencies = [
 "clippy 0.0.103 (registry+https://github.com/rust-lang/crates.io-index)",
 "elastic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -885,6 +893,7 @@ dependencies = [
 "hashdb 0.1.0",
 "heapsize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "kvdb 0.1.0",
+ "kvdb-memorydb 0.1.0",
 "libc 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "lru-cache 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1004,12 +1013,13 @@ dependencies = [
 "ethcore-ipc-nano 1.8.0",
 "ethcore-light 1.8.0",
 "ethcore-network 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethkey 0.2.0",
 "hash 0.1.0",
 "heapsize 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "ipnetwork 0.12.7 (registry+https://github.com/rust-lang/crates.io-index)",
 "kvdb 0.1.0",
+ "kvdb-memorydb 0.1.0",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "macros 0.1.0",
 "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1030,7 +1040,7 @@ dependencies = [
 "common-types 0.1.0",
 "ethcore-bigint 0.1.3",
 "ethcore-logger 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethjson 0.1.0",
 "evmjit 1.8.0",
 "hash 0.1.0",
@@ -1052,7 +1062,7 @@ dependencies = [
 "ethcore 1.8.0",
 "ethcore-bigint 0.1.3",
 "ethcore-bytes 0.1.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethjson 0.1.0",
 "evm 0.1.0",
 "panic_hook 0.1.0",
@@ -1128,7 +1138,7 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -1263,7 +1273,7 @@ dependencies = [
 "language-tags 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "mime 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "time 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
 "traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "typeable 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1350,7 +1360,7 @@ dependencies = [
 "ethcore-bigint 0.1.3",
 "ethcore-ipc 1.8.0",
 "ethcore-ipc-codegen 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@@ -1500,11 +1510,28 @@ version = "0.1.0"
 dependencies = [
 "elastic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "ethcore-bigint 0.1.3",
 "ethcore-bytes 0.1.0",
+]
+
+[[package]]
+name = "kvdb-memorydb"
+version = "0.1.0"
+dependencies = [
+ "kvdb 0.1.0",
+ "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rlp 0.2.0",
+]
+
+[[package]]
+name = "kvdb-rocksdb"
+version = "0.1.0"
+dependencies = [
+ "elastic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ethcore-bigint 0.1.3",
 "ethcore-devtools 1.8.0",
- "hashdb 0.1.0",
+ "kvdb 0.1.0",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "regex 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "rlp 0.2.0",
@@ -1656,6 +1683,7 @@ version = "0.1.0"
 dependencies = [
 "ethcore-devtools 1.8.0",
 "kvdb 0.1.0",
+ "kvdb-rocksdb 0.1.0",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "macros 0.1.0",
 ]
@@ -1843,9 +1871,9 @@ dependencies = [
 "ethcore-bytes 0.1.0",
 "ethcore-io 1.8.0",
 "ethcore-network 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "kvdb 0.1.0",
+ "kvdb-memorydb 0.1.0",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "native-contracts 0.1.0",
 "parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1960,7 +1988,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "num_cpus"
-version = "1.6.2"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "libc 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2042,7 +2070,7 @@ dependencies = [

 [[package]]
 name = "parity"
-version = "1.8.3"
+version = "1.8.7"
 dependencies = [
 "ansi_term 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "app_dirs 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2066,7 +2094,7 @@ dependencies = [
 "ethcore-network 1.8.0",
 "ethcore-secretstore 1.0.0",
 "ethcore-stratum 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethkey 0.2.0",
 "ethsync 1.8.0",
 "fdlimit 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2076,12 +2104,12 @@ dependencies = [
 "ipnetwork 0.12.7 (registry+https://github.com/rust-lang/crates.io-index)",
 "isatty 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "jsonrpc-core 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
- "kvdb 0.1.0",
+ "kvdb-rocksdb 0.1.0",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "migration 0.1.0",
 "node-filter 1.8.0",
 "node-health 0.1.0",
- "num_cpus 1.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "number_prefix 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 "panic_hook 0.1.0",
 "parity-dapps 1.8.0",
@@ -2122,7 +2150,7 @@ dependencies = [
 "ethcore-bigint 0.1.3",
 "ethcore-bytes 0.1.0",
 "ethcore-devtools 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "fetch 0.1.0",
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "futures-cpupool 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2184,7 +2212,7 @@ dependencies = [
 "ethabi 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "ethcore-bigint 0.1.3",
 "ethcore-bytes 0.1.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "fetch 0.1.0",
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "hash 0.1.0",
@@ -2206,7 +2234,7 @@ dependencies = [
 "ethcore 1.8.0",
 "ethcore-bigint 0.1.3",
 "ethcore-bytes 0.1.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "jsonrpc-core 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
 "jsonrpc-http-server 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
 "multihash 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2220,9 +2248,10 @@ version = "0.1.0"
 dependencies = [
 "ethcore 1.8.0",
 "ethcore-io 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethkey 0.2.0",
 "kvdb 0.1.0",
+ "kvdb-memorydb 0.1.0",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "rlp 0.2.0",
 "serde 1.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2235,7 +2264,7 @@ name = "parity-machine"
 version = "0.1.0"
 dependencies = [
 "ethcore-bigint 0.1.3",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 ]

 [[package]]
@@ -2263,13 +2292,14 @@ dependencies = [
 "ethcore-light 1.8.0",
 "ethcore-logger 1.8.0",
 "ethcore-network 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethcrypto 0.1.0",
 "ethjson 0.1.0",
 "ethkey 0.2.0",
 "ethstore 0.1.0",
 "ethsync 1.8.0",
 "fetch 0.1.0",
+ "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "futures-cpupool 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 "hardware-wallet 1.8.0",
 "hash 0.1.0",
@@ -2280,7 +2310,7 @@ dependencies = [
 "jsonrpc-macros 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
 "jsonrpc-pubsub 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
 "jsonrpc-ws-server 8.0.0 (git+https://github.com/paritytech/jsonrpc.git?branch=parity-1.8)",
- "kvdb 0.1.0",
+ "kvdb-memorydb 0.1.0",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "macros 0.1.0",
 "multihash 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2344,7 +2374,7 @@ name = "parity-ui"
 version = "1.8.0"
 dependencies = [
 "parity-ui-dev 1.8.0",
- "parity-ui-precompiled 1.4.0 (git+https://github.com/paritytech/js-precompiled.git?branch=beta)",
+ "parity-ui-precompiled 1.4.0 (git+https://github.com/paritytech/js-precompiled.git?branch=stable)",
 "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@@ -2358,7 +2388,7 @@ dependencies = [
 [[package]]
 name = "parity-ui-precompiled"
 version = "1.4.0"
-source = "git+https://github.com/paritytech/js-precompiled.git?branch=beta#26c6b48bfc83bb26445f6d72646773b6d5838fe4"
+source = "git+https://github.com/paritytech/js-precompiled.git?branch=stable#bbc5b6c3e3a43ab21b94d37922cdbed766c7b5c8"
 dependencies = [
 "parity-dapps-glue 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2373,7 +2403,7 @@ dependencies = [
 "ethcore-bytes 0.1.0",
 "ethcore-ipc 1.8.0",
 "ethcore-ipc-codegen 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethsync 1.8.0",
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "ipc-common-types 1.8.0",
@@ -2693,7 +2723,7 @@ dependencies = [
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@@ -2780,7 +2810,7 @@ dependencies = [
 [[package]]
 name = "rocksdb"
 version = "0.4.5"
-source = "git+https://github.com/paritytech/rust-rocksdb#4364caec4dd5da1a1d78c39276774ee65bf55c7d"
+source = "git+https://github.com/paritytech/rust-rocksdb#ecf06adf3148ab10f6f7686b724498382ff4f36e"
 dependencies = [
 "libc 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
 "local-encoding 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2790,10 +2820,12 @@ dependencies = [
 [[package]]
 name = "rocksdb-sys"
 version = "0.3.0"
-source = "git+https://github.com/paritytech/rust-rocksdb#4364caec4dd5da1a1d78c39276774ee65bf55c7d"
+source = "git+https://github.com/paritytech/rust-rocksdb#ecf06adf3148ab10f6f7686b724498382ff4f36e"
 dependencies = [
- "gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
+ "local-encoding 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "snappy-sys 0.1.0 (git+https://github.com/paritytech/rust-snappy)",
 ]

 [[package]]
@@ -2835,7 +2867,7 @@ name = "rpc-cli"
 version = "1.4.0"
 dependencies = [
 "bigint 4.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "futures 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "parity-rpc 1.8.0",
 "parity-rpc-client 1.4.0",
@@ -3090,6 +3122,15 @@ dependencies = [
 "libc 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "snappy-sys"
+version = "0.1.0"
+source = "git+https://github.com/paritytech/rust-snappy#858eac97192ea25d18d3f3626a8cc13ca0b175bb"
+dependencies = [
+ "gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "spmc"
 version = "0.2.2"
@@ -3551,7 +3592,7 @@ dependencies = [
 "common-types 0.1.0",
 "ethcore-bigint 0.1.3",
 "ethcore-bytes 0.1.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "ethjson 0.1.0",
 "evmjit 1.8.0",
 "hash 0.1.0",
@@ -3573,7 +3614,7 @@ dependencies = [
 "byteorder 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "ethcore-bigint 0.1.3",
 "ethcore-logger 1.8.0",
- "ethcore-util 1.8.3",
+ "ethcore-util 1.8.7",
 "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "parity-wasm 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "vm 0.1.0",
@@ -3803,7 +3844,7 @@ dependencies = [
 "checksum num-iter 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)" = "7485fcc84f85b4ecd0ea527b14189281cf27d60e583ae65ebc9c088b13dffe01"
 "checksum num-rational 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "288629c76fac4b33556f4b7ab57ba21ae202da65ba8b77466e6d598e31990790"
 "checksum num-traits 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "99843c856d68d8b4313b03a17e33c4bb42ae8f6610ea81b28abe076ac721b9b0"
-"checksum num_cpus 1.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "aec53c34f2d0247c5ca5d32cca1478762f301740468ee9ee6dcb7a0dd7a0c584"
+"checksum num_cpus 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "514f0d73e64be53ff320680ca671b64fe3fb91da01e1ae2ddc99eb51d453b20d"
 "checksum number_prefix 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "59a14be9c211cb9c602bad35ac99f41e9a84b44d71b8cbd3040e3bd02a214902"
 "checksum odds 0.2.25 (registry+https://github.com/rust-lang/crates.io-index)" = "c3df9b730298cea3a1c3faa90b7e2f9df3a9c400d0936d6015e6165734eefcba"
 "checksum ole32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5d2c49021782e5233cd243168edfa8037574afed4eba4bbaf538b3d8d1789d8c"
@@ -3814,7 +3855,7 @@ dependencies = [
 "checksum owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cdf84f41639e037b484f93433aa3897863b561ed65c6e59c7073d7c561710f37"
 "checksum parity-dapps-glue 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ddaeb8543c6823e93dae65a25eb8083ebfeee8f0000031119d7a0055b2e8fc63"
 "checksum parity-tokio-ipc 0.1.5 (git+https://github.com/nikvolf/parity-tokio-ipc)" = "<none>"
-"checksum parity-ui-precompiled 1.4.0 (git+https://github.com/paritytech/js-precompiled.git?branch=beta)" = "<none>"
+"checksum parity-ui-precompiled 1.4.0 (git+https://github.com/paritytech/js-precompiled.git?branch=stable)" = "<none>"
 "checksum parity-wasm 0.15.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8431a184ad88cfbcd71a792aaca319cc7203a94300c26b8dce2d0df0681ea87d"
 "checksum parity-wordlist 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "81451bfab101d186f8fc4a0aa13cb5539b31b02c4ed96425a0842e2a413daba6"
 "checksum parking_lot 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "149d8f5b97f3c1133e3cfcd8886449959e856b557ff281e292b733d7c69e005e"
@@ -3888,6 +3929,7 @@ dependencies = [
 "checksum slab 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "17b4fcaed89ab08ef143da37bc52adbcc04d4a69014f4c1208d6b51f0c47bc23"
 "checksum smallvec 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4c8cbcd6df1e117c2210e13ab5109635ad68a929fcbb8964dc965b76cb5ee013"
 "checksum smallvec 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8fcd03faf178110ab0334d74ca9631d77f94c8c11cc77fcb59538abf0025695d"
+"checksum snappy-sys 0.1.0 (git+https://github.com/paritytech/rust-snappy)" = "<none>"
 "checksum spmc 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "cd1f11d1fb5fd41834e55ce0b85a186efbf2f2afd9fdb09e2c8d72f9bff1ad1a"
 "checksum stable_deref_trait 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "15132e0e364248108c5e2c02e3ab539be8d6f5d52a01ca9bbf27ed657316f02b"
 "checksum strsim 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b4d15c810519a91cf877e7e36e63fe068815c678181439f2f29e2562147c3694"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 description = "Parity Ethereum client"
 name = "parity"
-version = "1.8.3"
+version = "1.8.7"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
@@ -63,7 +63,7 @@ path = { path = "util/path" }
 panic_hook = { path = "panic_hook" }
 hash = { path = "util/hash" }
 migration = { path = "util/migration" }
-kvdb = { path = "util/kvdb" }
+kvdb-rocksdb = { path = "util/kvdb-rocksdb" }

 parity-dapps = { path = "dapps", optional = true }
 clippy = { version = "0.0.103", optional = true}
--- a/dapps/node-health/src/time.rs
+++ b/dapps/node-health/src/time.rs
@@ -193,7 +193,7 @@ const UPDATE_TIMEOUT_ERR_SECS: u64 = 60;
 const UPDATE_TIMEOUT_INCOMPLETE_SECS: u64 = 10;

 /// Maximal valid time drift.
-pub const MAX_DRIFT: i64 = 500;
+pub const MAX_DRIFT: i64 = 10_000;

 type BoxFuture<A, B> = Box<Future<Item = A, Error = B> + Send>;

--- a/dapps/ui/Cargo.toml
+++ b/dapps/ui/Cargo.toml
@@ -12,7 +12,7 @@ rustc_version = "0.1"
 [dependencies]
 parity-ui-dev = { path = "../../js", optional = true }
 # This is managed by the js/scripts/release.sh script on CI - keep it in a single line
-parity-ui-precompiled = { git = "https://github.com/paritytech/js-precompiled.git", optional = true, branch = "beta" }
+parity-ui-precompiled = { git = "https://github.com/paritytech/js-precompiled.git", optional = true, branch = "stable" }

 [features]
 no-precompiled-js = ["parity-ui-dev"]
--- a/ethcore/Cargo.toml
+++ b/ethcore/Cargo.toml
@@ -56,6 +56,8 @@ rand = "0.3"
 rlp = { path = "../util/rlp" }
 rlp_derive = { path = "../util/rlp_derive" }
 kvdb = { path = "../util/kvdb" }
+kvdb-rocksdb = { path = "../util/kvdb-rocksdb" }
+kvdb-memorydb = { path = "../util/kvdb-memorydb" }
 util-error = { path = "../util/error" }
 snappy = { path = "../util/snappy" }
 migration = { path = "../util/migration" }
@@ -81,7 +83,7 @@ native-contracts = { path = "native_contracts", features = ["test_contracts"] }
 [features]
 jit = ["evm/jit"]
 evm-debug = ["slow-blocks"]
-evm-debug-tests = ["evm-debug"]
+evm-debug-tests = ["evm-debug", "evm/evm-debug-tests"]
 slow-blocks = [] # Use SLOW_TX_DURATION="50" (compile time!) to track transactions over 50ms
 json-tests = []
 test-heavy = []
--- a/ethcore/evm/Cargo.toml
+++ b/ethcore/evm/Cargo.toml
@@ -26,3 +26,5 @@ rustc-hex = "1.0"

 [features]
 jit = ["evmjit"]
+evm-debug = []
+evm-debug-tests = ["evm-debug"]
--- a/ethcore/evm/src/interpreter/informant.rs
+++ b/ethcore/evm/src/interpreter/informant.rs
@@ -39,12 +39,12 @@ mod inner {
 	use std::collections::HashMap;
 	use std::time::{Instant, Duration};

-	use evm::interpreter::stack::Stack;
-	use evm::instructions::{Instruction, InstructionInfo, INSTRUCTIONS};
-	use evm::{CostType};
-
 	use bigint::prelude::U256;

+	use interpreter::stack::Stack;
+	use instructions::{Instruction, InstructionInfo, INSTRUCTIONS};
+	use CostType;
+
 	macro_rules! evm_debug {
 		($x: expr) => {
 			$x
@@ -110,7 +110,7 @@ mod inner {
 		}

 		pub fn after_instruction(&mut self, instruction: Instruction) {
-			let mut stats = self.stats.entry(instruction).or_insert_with(|| Stats::default());
+			let stats = self.stats.entry(instruction).or_insert_with(|| Stats::default());
 			let took = self.last_instruction.elapsed();
 			stats.note(took);
 		}
--- a/ethcore/evm/src/lib.rs
+++ b/ethcore/evm/src/lib.rs
@@ -33,6 +33,7 @@ extern crate hash;
 #[macro_use]
 extern crate lazy_static;

+#[cfg_attr(feature = "evm-debug", macro_use)]
 extern crate log;

 #[cfg(feature = "jit")]
--- a/ethcore/light/Cargo.toml
+++ b/ethcore/light/Cargo.toml
@@ -40,6 +40,8 @@ stats = { path = "../../util/stats" }
 hash = { path = "../../util/hash" }
 triehash = { path = "../../util/triehash" }
 kvdb = { path = "../../util/kvdb" }
+kvdb-rocksdb = { path = "../../util/kvdb-rocksdb" }
+kvdb-memorydb = { path = "../../util/kvdb-memorydb" }

 [features]
 default = []
--- a/ethcore/light/src/client/header_chain.rs
+++ b/ethcore/light/src/client/header_chain.rs
@@ -728,13 +728,14 @@ mod tests {
 	use ethcore::header::Header;
 	use ethcore::spec::Spec;
  	use cache::Cache;
-	use kvdb::{in_memory, KeyValueDB};
+	use kvdb::KeyValueDB;
+	use kvdb_memorydb;

 	use time::Duration;
 	use parking_lot::Mutex;

 	fn make_db() -> Arc<KeyValueDB> {
-		Arc::new(in_memory(0))
+		Arc::new(kvdb_memorydb::create(0))
 	}

 	#[test]
--- a/ethcore/light/src/client/mod.rs
+++ b/ethcore/light/src/client/mod.rs
@@ -36,7 +36,8 @@ use bigint::prelude::U256;
 use bigint::hash::H256;
 use futures::{IntoFuture, Future};

-use kvdb::{KeyValueDB, CompactionProfile};
+use kvdb::KeyValueDB;
+use kvdb_rocksdb::CompactionProfile;

 use self::fetch::ChainDataFetcher;
 use self::header_chain::{AncestryIter, HeaderChain};
@@ -214,7 +215,7 @@ impl<T: ChainDataFetcher> Client<T> {
 		io_channel: IoChannel<ClientIoMessage>,
 		cache: Arc<Mutex<Cache>>
 	) -> Self {
-		let db = ::kvdb::in_memory(0);
+		let db = ::kvdb_memorydb::create(0);

 		Client::new(
 			config,
--- a/ethcore/light/src/client/service.rs
+++ b/ethcore/light/src/client/service.rs
@@ -25,7 +25,7 @@ use ethcore::db;
 use ethcore::service::ClientIoMessage;
 use ethcore::spec::Spec;
 use io::{IoContext, IoError, IoHandler, IoService};
-use kvdb::{Database, DatabaseConfig};
+use kvdb_rocksdb::{Database, DatabaseConfig};

 use cache::Cache;
 use parking_lot::Mutex;
@@ -63,11 +63,7 @@ impl<T: ChainDataFetcher> Service<T> {
 		// initialize database.
 		let mut db_config = DatabaseConfig::with_columns(db::NUM_COLUMNS);

-		// give all rocksdb cache to the header chain column.
-		if let Some(size) = config.db_cache_size {
-			db_config.set_cache(db::COL_LIGHT_CHAIN, size);
-		}
-
+		db_config.memory_budget = config.db_cache_size;
 		db_config.compaction = config.db_compaction;
 		db_config.wal = config.db_wal;

--- a/ethcore/light/src/lib.rs
+++ b/ethcore/light/src/lib.rs
@@ -92,6 +92,8 @@ extern crate vm;
 extern crate hash;
 extern crate triehash;
 extern crate kvdb;
+extern crate kvdb_memorydb;
+extern crate kvdb_rocksdb;

 #[cfg(feature = "ipc")]
 extern crate ethcore_ipc as ipc;
--- a/ethcore/node_filter/Cargo.toml
+++ b/ethcore/node_filter/Cargo.toml
@@ -11,10 +11,12 @@ ethcore = { path = ".."}
 ethcore-util = { path = "../../util" }
 ethcore-bigint = { path = "../../util/bigint" }
 ethcore-bytes = { path = "../../util/bytes" }
-ethcore-io = { path = "../../util/io" }
 ethcore-network = { path = "../../util/network" }
-kvdb = { path = "../../util/kvdb" }
 native-contracts = { path = "../native_contracts" }
 futures = "0.1"
 log = "0.3"
 parking_lot = "0.4"
+
+[dev-dependencies]
+kvdb-memorydb = { path = "../../util/kvdb-memorydb" }
+ethcore-io = { path = "../../util/io" }
--- a/ethcore/node_filter/src/lib.rs
+++ b/ethcore/node_filter/src/lib.rs
@@ -24,9 +24,14 @@ extern crate ethcore_network as network;
 extern crate native_contracts;
 extern crate futures;
 extern crate parking_lot;
-extern crate kvdb;
-#[cfg(test)] extern crate ethcore_io as io;
-#[macro_use] extern crate log;
+
+#[macro_use]
+extern crate log;
+
+#[cfg(test)]
+extern crate kvdb_memorydb;
+#[cfg(test)]
+extern crate ethcore_io as io;

 use std::sync::Weak;
 use std::collections::HashMap;
@@ -135,7 +140,7 @@ mod test {
 		let contract_addr = Address::from_str("0000000000000000000000000000000000000005").unwrap();
 		let data = include_bytes!("../res/node_filter.json");
 		let spec = Spec::load(&::std::env::temp_dir(), &data[..]).unwrap();
-		let client_db = Arc::new(::kvdb::in_memory(::ethcore::db::NUM_COLUMNS.unwrap_or(0)));
+		let client_db = Arc::new(::kvdb_memorydb::create(::ethcore::db::NUM_COLUMNS.unwrap_or(0)));

 		let client = Client::new(
 			ClientConfig::default(),
--- a/ethcore/res/ethereum/expanse.json
+++ b/ethcore/res/ethereum/expanse.json
@@ -6,7 +6,7 @@
 			"params": {
 				"minimumDifficulty": "0x020000",
 				"difficultyBoundDivisor": "0x0800",
-				"difficultyIncrementDivisor": "60",
+				"difficultyIncrementDivisor": "0x3C",
 				"durationLimit": "0x3C",
 				"blockReward": "0x6f05b59d3b200000",
 				"homesteadTransition": "0x30d40",
@@ -16,7 +16,13 @@
 				"eip150Transition": "0x927C0",
 				"eip160Transition": "0x927C0",
 				"eip161abcTransition": "0x927C0",
-				"eip161dTransition": "0x927C0"
+				"eip161dTransition": "0x927C0",
+				"eip100bTransition": "0xC3500",
+				"metropolisDifficultyIncrementDivisor": "0x1E",
+				"eip649Transition": "0xC3500",
+				"eip649Reward": "0x3782DACE9D900000",
+				"expip2Transition": "0xC3500",
+				"expip2DurationLimit": "0x1E"
 			}
 		}
 	},
@@ -28,10 +34,16 @@
 		"minGasLimit": "0x1388",
 		"networkID": "0x1",
 		"chainID": "0x2",
+		"forkBlock": "0xDBBA0",
+		"forkCanonHash": "0x8e7bed51e24f5174090408664ac476b90b5e1199a947af7442f1ac88263fc8c7",
 		"subprotocolName": "exp",
 		"eip98Transition": "0x7fffffffffffff",
 		"eip86Transition": "0x7fffffffffffff",
-		"eip155Transition": "0x927C0"
+		"eip155Transition": "0x927C0",
+		"eip140Transition": "0xC3500",
+		"eip211Transition": "0xC3500",
+		"eip214Transition": "0xC3500",
+		"eip658Transition": "0xC3500"
 	},
 	"genesis": {
 		"seal": {
@@ -53,7 +65,6 @@
 		"enode://96d3919b903e7f5ad59ac2f73c43be9172d9d27e2771355db03fd194732b795829a31fe2ea6de109d0804786c39a807e155f065b4b94c6fce167becd0ac02383@45.55.22.34:42786",
 		"enode://5f6c625bf287e3c08aad568de42d868781e961cbda805c8397cfb7be97e229419bef9a5a25a75f97632787106bba8a7caf9060fab3887ad2cfbeb182ab0f433f@46.101.182.53:42786",
 		"enode://d33a8d4c2c38a08971ed975b750f21d54c927c0bf7415931e214465a8d01651ecffe4401e1db913f398383381413c78105656d665d83f385244ab302d6138414@128.199.183.48:42786",
-		"enode://df872f81e25f72356152b44cab662caf1f2e57c3a156ecd20e9ac9246272af68a2031b4239a0bc831f2c6ab34733a041464d46b3ea36dce88d6c11714446e06b@178.62.208.109:42786",
 		"enode://f6f0d6b9b7d02ec9e8e4a16e38675f3621ea5e69860c739a65c1597ca28aefb3cec7a6d84e471ac927d42a1b64c1cbdefad75e7ce8872d57548ddcece20afdd1@159.203.64.95:42786"
 	],
 	"accounts": {
@@ -61,6 +72,10 @@
 		"0000000000000000000000000000000000000002": { "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "word": 12 } } } },
 		"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 } } } },
 		"bb94f0ceb32257275b2a7a9c094c13e469b4563e": {
 			"balance": "10000000000000000000000000"
 		},
--- a/ethcore/res/ethereum/foundation.json
+++ b/ethcore/res/ethereum/foundation.json
@@ -173,24 +173,38 @@
 		"stateRoot": "0xd7f8974fb5ac78d9ac099b9ad5018bedc2ce0a72dad1827a1709da30580f0544"
 	},
 	"nodes": [
-		"enode://efe4f2493f4aff2d641b1db8366b96ddacfe13e7a6e9c8f8f8cf49f9cdba0fdf3258d8c8f8d0c5db529f8123c8f1d95f36d54d590ca1bb366a5818b9a4ba521c@163.172.187.252:30303",
+		"enode://6a868ced2dec399c53f730261173638a93a40214cf299ccf4d42a76e3fa54701db410669e8006347a4b3a74fa090bb35af0320e4bc8d04cf5b7f582b1db285f5@163.172.131.191:30303",
+		"enode://66a483383882a518fcc59db6c017f9cd13c71261f13c8d7e67ed43adbbc82a932d88d2291f59be577e9425181fc08828dc916fdd053af935a9491edf9d6006ba@212.47.247.103:30303",
 		"enode://cd6611461840543d5b9c56fbf088736154c699c43973b3a1a32390cf27106f87e58a818a606ccb05f3866de95a4fe860786fea71bf891ea95f234480d3022aa3@163.172.157.114:30303",
+		"enode://78b094cb27ceeecbe311bc278f4fde8b9a265db42d268c88484c94d7a2d19b82a1bd22dfd6c2bd4d90f9b05e6d42255e6eb85de15f73848ff82ed0be9cdf5202@52.233.198.218:30303",
+		"enode://00526537cb7e1aa6cf49714f0635fd0f608904d8d0693b949eea2dcdfdb0abbe4c794003a5fe57aa662d0a9215e8dfa4d2deb6ef0101c5e185e2617721813d43@40.65.122.44:30303",
+		"enode://4a456b4b6e6ee1f51389763e51b80fe04782c762445d96c32a96ebd34bd9178c1894924d5101123eacfd4f0fc4da25b5e1ee7f18832ac0bf4c6d6ac81442d698@40.71.6.49:3030",
+		"enode://68f85e7403976aa92318eff804cbe9bc988e0f5230d9d07ae4def030cbae16603262638e272d19875b7e5c54e296ba88ab6ec6e98face9e2537346c4dce78882@52.243.47.211:30303",
+		"enode://dc72806c3aa8fda207c8c018aba8d6cf143728b3628b6ded8d5e8cdeb8aa05cbd53f710ecd014c9a8f0d1e98f2874bff8afb15a229202f510a9c0258d1f6d109@159.203.210.80:30303",
+		"enode://5a62f19d35c0da8b576c9414568c728d4744e6e9d436c0f9db27456400011414f515871f13a6b8e0468534b5116cfe765d7630f680f1707a38467940a9f62511@45.55.33.62:30303",
+		"enode://605e04a43b1156966b3a3b66b980c87b7f18522f7f712035f84576016be909a2798a438b2b17b1a8c58db314d88539a77419ca4be36148c086900fba487c9d39@188.166.255.12:30303",
+		"enode://1d1f7bcb159d308eb2f3d5e32dc5f8786d714ec696bb2f7e3d982f9bcd04c938c139432f13aadcaf5128304a8005e8606aebf5eebd9ec192a1471c13b5e31d49@138.201.223.35:30303",
+		"enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303",
+		"enode://3f1d12044546b76342d59d4a05532c14b85aa669704bfe1f864fe079415aa2c02d743e03218e57a33fb94523adb54032871a6c51b2cc5514cb7c7e35b3ed0a99@13.93.211.84:30303",
+		"enode://78de8a0916848093c73790ead81d1928bec737d565119932b98c6b100d944b7a95e94f847f689fc723399d2e31129d182f7ef3863f2b4c820abbf3ab2722344d@191.235.84.50:30303",
+		"enode://158f8aab45f6d19c6cbf4a089c2670541a8da11978a2f90dbf6a502a4a3bab80d288afdbeb7ec0ef6d92de563767f3b1ea9e8e334ca711e9f8e2df5a0385e8e6@13.75.154.138:30303",
+		"enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303",
+		"enode://979b7fa28feeb35a4741660a16076f1943202cb72b6af70d327f053e248bab9ba81760f39d0701ef1d8f89cc1fbd2cacba0710a12cd5314d5e0c9021aa3637f9@5.1.83.226:30303",
+		"enode://0cc5f5ffb5d9098c8b8c62325f3797f56509bff942704687b6530992ac706e2cb946b90a34f1f19548cd3c7baccbcaea354531e5983c7d1bc0dee16ce4b6440b@40.118.3.223:30305",
+		"enode://1c7a64d76c0334b0418c004af2f67c50e36a3be60b5e4790bdac0439d21603469a85fad36f2473c9a80eb043ae60936df905fa28f1ff614c3e5dc34f15dcd2dc@40.118.3.223:30308",
+		"enode://85c85d7143ae8bb96924f2b54f1b3e70d8c4d367af305325d30a61385a432f247d2c75c45c6b4a60335060d072d7f5b35dd1d4c45f76941f62a4f83b6e75daaf@40.118.3.223:30309",
+		"enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303",
+		"enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303",
+		"enode://4cd540b2c3292e17cff39922e864094bf8b0741fcc8c5dcea14957e389d7944c70278d872902e3d0345927f621547efa659013c400865485ab4bfa0c6596936f@138.201.144.135:30303",
+		"enode://01f76fa0561eca2b9a7e224378dd854278735f1449793c46ad0c4e79e8775d080c21dcc455be391e90a98153c3b05dcc8935c8440de7b56fe6d67251e33f4e3c@51.15.42.252:30303",
+		"enode://2c9059f05c352b29d559192fe6bca272d965c9f2290632a2cfda7f83da7d2634f3ec45ae3a72c54dd4204926fb8082dcf9686e0d7504257541c86fc8569bcf4b@163.172.171.38:30303",
+		"enode://efe4f2493f4aff2d641b1db8366b96ddacfe13e7a6e9c8f8f8cf49f9cdba0fdf3258d8c8f8d0c5db529f8123c8f1d95f36d54d590ca1bb366a5818b9a4ba521c@163.172.187.252:30303",
 		"enode://bcc7240543fe2cf86f5e9093d05753dd83343f8fda7bf0e833f65985c73afccf8f981301e13ef49c4804491eab043647374df1c4adf85766af88a624ecc3330e@136.243.154.244:30303",
 		"enode://ed4227681ca8c70beb2277b9e870353a9693f12e7c548c35df6bca6a956934d6f659999c2decb31f75ce217822eefca149ace914f1cbe461ed5a2ebaf9501455@88.212.206.70:30303",
 		"enode://cadc6e573b6bc2a9128f2f635ac0db3353e360b56deef239e9be7e7fce039502e0ec670b595f6288c0d2116812516ad6b6ff8d5728ff45eba176989e40dead1e@37.128.191.230:30303",
 		"enode://595a9a06f8b9bc9835c8723b6a82105aea5d55c66b029b6d44f229d6d135ac3ecdd3e9309360a961ea39d7bee7bac5d03564077a4e08823acc723370aace65ec@46.20.235.22:30303",
 		"enode://029178d6d6f9f8026fc0bc17d5d1401aac76ec9d86633bba2320b5eed7b312980c0a210b74b20c4f9a8b0b2bf884b111fa9ea5c5f916bb9bbc0e0c8640a0f56c@216.158.85.185:30303",
-		"enode://fdd1b9bb613cfbc200bba17ce199a9490edc752a833f88d4134bf52bb0d858aa5524cb3ec9366c7a4ef4637754b8b15b5dc913e4ed9fdb6022f7512d7b63f181@212.47.247.103:30303",
-		"enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303",
-		"enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303",
-		"enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303",
-		"enode://4cd540b2c3292e17cff39922e864094bf8b0741fcc8c5dcea14957e389d7944c70278d872902e3d0345927f621547efa659013c400865485ab4bfa0c6596936f@138.201.144.135:30303",
-
-		"enode://89d5dc2a81e574c19d0465f497c1af96732d1b61a41de89c2a37f35707689ac416529fae1038809852b235c2d30fd325abdc57c122feeefbeaaf802cc7e9580d@45.55.33.62:30303",
-		"enode://605e04a43b1156966b3a3b66b980c87b7f18522f7f712035f84576016be909a2798a438b2b17b1a8c58db314d88539a77419ca4be36148c086900fba487c9d39@188.166.255.12:30303",
-		"enode://016b20125f447a3b203a3cae953b2ede8ffe51290c071e7599294be84317635730c397b8ff74404d6be412d539ee5bb5c3c700618723d3b53958c92bd33eaa82@159.203.210.80:30303",
-		"enode://01f76fa0561eca2b9a7e224378dd854278735f1449793c46ad0c4e79e8775d080c21dcc455be391e90a98153c3b05dcc8935c8440de7b56fe6d67251e33f4e3c@51.15.42.252:30303",
-		"enode://8d91c8137890d29110b9463882f17ae4e279cd2c90cf56573187ed1c8546fca5f590a9f05e9f108eb1bd91767ed01ede4daad9e001b61727885eaa246ddb39c2@163.172.171.38:30303"
+		"enode://fdd1b9bb613cfbc200bba17ce199a9490edc752a833f88d4134bf52bb0d858aa5524cb3ec9366c7a4ef4637754b8b15b5dc913e4ed9fdb6022f7512d7b63f181@212.47.247.103:30303"
 	],
 	"accounts": {
 		"0000000000000000000000000000000000000001": { "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },
--- a/ethcore/res/ethereum/kovan.json
+++ b/ethcore/res/ethereum/kovan.json
@@ -12,18 +12,17 @@
 						"0x00427feae2419c15b89d1c21af10d1b6650a4d3d",
 						"0x4Ed9B08e6354C70fE6F8CB0411b0d3246b424d6c",
 						"0x0020ee4Be0e2027d76603cB751eE069519bA81A1",
-
 						"0x0010f94b296a852aaac52ea6c5ac72e03afd032d",
-
 						"0x007733a1FE69CF3f2CF989F81C7b4cAc1693387A",
 						"0x00E6d2b931F55a3f1701c7389d592a7778897879",
 						"0x00e4a10650e5a6D6001C38ff8E64F97016a1645c",
-
 						"0x00a0a24b9f0e5ec7aa4c7389b8302fd0123194de"
 					]
 				},
 				"validateScoreTransition": 1000000,
-				"validateStepTransition": 1500000
+				"validateStepTransition": 1500000,
+				"maximumUncleCountTransition": 5067000,
+				"maximumUncleCount": 0
 			}
 		}
 	},
@@ -37,7 +36,11 @@
 		"forkCanonHash": "0x0a66d93c2f727dca618fabaf70c39b37018c73d78b939d8b11efbbd09034778f",
 		"validateReceiptsTransition" : 1000000,
 		"eip155Transition": 1000000,
-		"validateChainIdTransition": 1000000
+		"validateChainIdTransition": 1000000,
+		"eip140Transition": 5067000,
+		"eip211Transition": 5067000,
+		"eip214Transition": 5067000,
+		"eip658Transition": 5067000
 	},
 	"genesis": {
 		"seal": {
@@ -54,13 +57,17 @@
 		"0x0000000000000000000000000000000000000002": { "balance": "1", "builtin": { "name": "sha256", "pricing": { "linear": { "base": 60, "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 } } } },
+		"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 } } } },
 		"0x00521965e7bd230323c423d96c657db5b79d099f": { "balance": "1606938044258990275541962092341162602522202993782792835301376" }
 	},
 	"nodes": [
-		"enode://0518a3d35d4a7b3e8c433e7ffd2355d84a1304ceb5ef349787b556197f0c87fad09daed760635b97d52179d645d3e6d16a37d2cc0a9945c2ddf585684beb39ac@40.68.248.100:30303",
-		"enode://dcf984764db421fa0cd8dc7fc02ae378545723abb94d179f55325514cc30185eaea3dcefde6e358b7cdbe970c50b7c49e841618713a9a72d6f3f59ad9949ec6b@52.165.239.18:30303",
+		"enode://56abaf065581a5985b8c5f4f88bd202526482761ba10be9bfdcd14846dd01f652ec33fde0f8c0fd1db19b59a4c04465681fcef50e11380ca88d25996191c52de@40.71.221.215:30303",
+		"enode://d07827483dc47b368eaf88454fb04b41b7452cf454e194e2bd4c14f98a3278fed5d819dbecd0d010407fc7688d941ee1e58d4f9c6354d3da3be92f55c17d7ce3@52.166.117.77:30303",
+		"enode://8fa162563a8e5a05eef3e1cd5abc5828c71344f7277bb788a395cce4a0e30baf2b34b92fe0b2dbbba2313ee40236bae2aab3c9811941b9f5a7e8e90aaa27ecba@52.165.239.18:30303",
 		"enode://7e2e7f00784f516939f94e22bdc6cf96153603ca2b5df1c7cc0f90a38e7a2f218ffb1c05b156835e8b49086d11fdd1b3e2965be16baa55204167aa9bf536a4d9@52.243.47.56:30303",
-		"enode://d51b3e98bf35addf2f1d0ea1ffc90483e24d7c60b0fb3be1701e818f3d6778c06e53fdec737a534fe222956296f9d6e909baa025916a94601897e5c7136a7d95@40.71.221.215:30303",
-		"enode://419d42e300e8fd379ff6d045d93d7e66a091441e7b3c9f1d3d10088d8634ad37721e6bf86148f78c3f1b9f1360dc566ca8ee830b2d2079bc9f7171ea6152bb64@52.166.117.77:30303"
+		"enode://0518a3d35d4a7b3e8c433e7ffd2355d84a1304ceb5ef349787b556197f0c87fad09daed760635b97d52179d645d3e6d16a37d2cc0a9945c2ddf585684beb39ac@40.68.248.100:30303"
 	]
 }
--- a/ethcore/res/wasm-tests
+++ b/ethcore/res/wasm-tests
--- a/ethcore/src/account_provider/mod.rs
+++ b/ethcore/src/account_provider/mod.rs
@@ -516,8 +516,8 @@ impl AccountProvider {
 	}

 	/// Returns each hardware account along with name and meta.
-	pub fn is_hardware_address(&self, address: Address) -> bool {
-		self.hardware_store.as_ref().and_then(|s| s.wallet_info(&address)).is_some()
+	pub fn is_hardware_address(&self, address: &Address) -> bool {
+		self.hardware_store.as_ref().and_then(|s| s.wallet_info(address)).is_some()
 	}

 	/// Returns each account along with name and meta.
@@ -589,7 +589,7 @@ impl AccountProvider {
 			}
 		}

-		if self.unlock_keep_secret && unlock != Unlock::OneTime {
+		if self.unlock_keep_secret && unlock == Unlock::Perm {
 			// verify password and get the secret
 			let secret = self.sstore.raw_secret(&account, &password)?;
 			self.unlocked_secrets.write().insert(account.clone(), secret);
@@ -639,14 +639,22 @@ impl AccountProvider {
 	}

 	/// Checks if given account is unlocked
-	pub fn is_unlocked(&self, address: Address) -> bool {
+	pub fn is_unlocked(&self, address: &Address) -> bool {
 		let unlocked = self.unlocked.read();
 		let unlocked_secrets = self.unlocked_secrets.read();
-		self.sstore.account_ref(&address)
+		self.sstore.account_ref(address)
 			.map(|r| unlocked.get(&r).is_some() || unlocked_secrets.get(&r).is_some())
 			.unwrap_or(false)
 	}

+	/// Checks if given account is unlocked permanently
+	pub fn is_unlocked_permanently(&self, address: &Address) -> bool {
+		let unlocked = self.unlocked.read();
+		self.sstore.account_ref(address)
+			.map(|r| unlocked.get(&r).map_or(false, |account| account.unlock == Unlock::Perm))
+			.unwrap_or(false)
+	}
+
 	/// Signs the message. If password is not provided the account must be unlocked.
 	pub fn sign(&self, address: Address, password: Option<String>, message: Message) -> Result<Signature, SignError> {
 		let account = self.sstore.account_ref(&address)?;
--- a/ethcore/src/block.rs
+++ b/ethcore/src/block.rs
@@ -380,8 +380,13 @@ impl<'x> OpenBlock<'x> {
 	/// NOTE Will check chain constraints and the uncle number but will NOT check
 	/// that the header itself is actually valid.
 	pub fn push_uncle(&mut self, valid_uncle_header: Header) -> Result<(), BlockError> {
-		if self.block.uncles.len() + 1 > self.engine.maximum_uncle_count() {
-			return Err(BlockError::TooManyUncles(OutOfBounds{min: None, max: Some(self.engine.maximum_uncle_count()), found: self.block.uncles.len() + 1}));
+		let max_uncles = self.engine.maximum_uncle_count(self.block.header().number());
+		if self.block.uncles.len() + 1 > max_uncles {
+			return Err(BlockError::TooManyUncles(OutOfBounds{
+				min: None,
+				max: Some(max_uncles),
+				found: self.block.uncles.len() + 1,
+			}));
 		}
 		// TODO: check number
 		// TODO: check not a direct ancestor (use last_hashes for that)
--- a/ethcore/src/blockchain/blockchain.rs
+++ b/ethcore/src/blockchain/blockchain.rs
@@ -1479,7 +1479,8 @@ mod tests {
 	use std::sync::Arc;
 	use rustc_hex::FromHex;
 	use hash::keccak;
-	use kvdb::{in_memory, KeyValueDB};
+	use kvdb::KeyValueDB;
+	use kvdb_memorydb;
 	use bigint::hash::*;
 	use receipt::{Receipt, TransactionOutcome};
 	use blockchain::{BlockProvider, BlockChain, Config, ImportRoute};
@@ -1493,7 +1494,7 @@ mod tests {
 	use header::BlockNumber;

 	fn new_db() -> Arc<KeyValueDB> {
-		Arc::new(in_memory(::db::NUM_COLUMNS.unwrap_or(0)))
+		Arc::new(kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0)))
 	}

 	fn new_chain(genesis: &[u8], db: Arc<KeyValueDB>) -> BlockChain {
--- a/ethcore/src/blockchain/config.rs
+++ b/ethcore/src/blockchain/config.rs
@@ -23,8 +23,6 @@ pub struct Config {
 	pub pref_cache_size: usize,
 	/// Maximum cache size in bytes.
 	pub max_cache_size: usize,
-	/// Backing db cache_size
-	pub db_cache_size: Option<usize>,
 }

 impl Default for Config {
@@ -32,8 +30,6 @@ impl Default for Config {
 		Config {
 			pref_cache_size: 1 << 14,
 			max_cache_size: 1 << 20,
-			db_cache_size: None,
 		}
 	}
 }
-
--- a/ethcore/src/client/client.rs
+++ b/ethcore/src/client/client.rs
@@ -1230,12 +1230,12 @@ impl BlockChainClient for Client {
 	}

 	fn estimate_gas(&self, t: &SignedTransaction, block: BlockId) -> Result<U256, CallError> {
-		const UPPER_CEILING: u64 = 1_000_000_000_000u64;
-		let (mut upper, env_info)  = {
+		let (mut upper, max_upper, env_info)  = {
 			let mut env_info = self.env_info(block).ok_or(CallError::StatePruned)?;
-			let initial_upper = env_info.gas_limit;
-			env_info.gas_limit = UPPER_CEILING.into();
-			(initial_upper, env_info)
+			let init = env_info.gas_limit;
+			let max = init * U256::from(10);
+			env_info.gas_limit = max;
+			(init, max, env_info)
 		};

 		// that's just a copy of the state.
@@ -1256,9 +1256,7 @@ impl BlockChainClient for Client {
 		};

 		if !cond(upper)? {
-			// impossible at block gas limit - try `UPPER_CEILING` instead.
-			// TODO: consider raising limit by powers of two.
-			upper = UPPER_CEILING.into();
+			upper = max_upper;
 			if !cond(upper)? {
 				trace!(target: "estimate_gas", "estimate_gas failed with {}", upper);
 				let err = ExecutionError::Internal(format!("Requires higher than upper limit of {}", upper));
@@ -1871,7 +1869,7 @@ impl MiningBlockChainClient for Client {
 			.find_uncle_headers(&h, engine.maximum_uncle_age())
 			.unwrap_or_else(Vec::new)
 			.into_iter()
-			.take(engine.maximum_uncle_count())
+			.take(engine.maximum_uncle_count(open_block.header().number()))
 			.foreach(|h| {
 				open_block.push_uncle(h).expect("pushing maximum_uncle_count;
 												open_block was just created;
@@ -1886,7 +1884,7 @@ impl MiningBlockChainClient for Client {
 	fn reopen_block(&self, block: ClosedBlock) -> OpenBlock {
 		let engine = &*self.engine;
 		let mut block = block.reopen(engine);
-		let max_uncles = engine.maximum_uncle_count();
+		let max_uncles = engine.maximum_uncle_count(block.header().number());
 		if block.uncles().len() < max_uncles {
 			let chain = self.chain.read();
 			let h = chain.best_block_hash();
--- a/ethcore/src/client/config.rs
+++ b/ethcore/src/client/config.rs
@@ -21,7 +21,7 @@ use std::fmt::{Display, Formatter, Error as FmtError};
 use mode::Mode as IpcMode;
 use verification::{VerifierType, QueueConfig};
 use util::journaldb;
-use kvdb::CompactionProfile;
+use kvdb_rocksdb::CompactionProfile;

 pub use std::time::Duration;
 pub use blockchain::Config as BlockChainConfig;
@@ -141,7 +141,7 @@ pub struct ClientConfig {
 	pub pruning: journaldb::Algorithm,
 	/// The name of the client instance.
 	pub name: String,
-	/// RocksDB state column cache-size if not default
+	/// RocksDB column cache-size if not default
 	pub db_cache_size: Option<usize>,
 	/// State db compaction profile
 	pub db_compaction: DatabaseCompactionProfile,
--- a/ethcore/src/client/evm_test_client.rs
+++ b/ethcore/src/client/evm_test_client.rs
@@ -21,8 +21,7 @@ use std::sync::Arc;
 use bigint::prelude::U256;
 use bigint::hash::H256;
 use util::journaldb;
-use trie;
-use bytes;
+use {trie, kvdb_memorydb, bytes};
 use kvdb::{self, KeyValueDB};
 use {state, state_db, client, executive, trace, transaction, db, spec, pod_state};
 use factory::Factories;
@@ -128,7 +127,7 @@ impl<'a> EvmTestClient<'a> {
 	}

 	fn state_from_spec(spec: &'a spec::Spec, factories: &Factories) -> Result<state::State<state_db::StateDB>, EvmTestError> {
-		let db = Arc::new(kvdb::in_memory(db::NUM_COLUMNS.expect("We use column-based DB; qed")));
+		let db = Arc::new(kvdb_memorydb::create(db::NUM_COLUMNS.expect("We use column-based DB; qed")));
 		let journal_db = journaldb::new(db.clone(), journaldb::Algorithm::EarlyMerge, db::COL_STATE);
 		let mut state_db = state_db::StateDB::new(journal_db, 5 * 1024 * 1024);
 		state_db = spec.ensure_db_good(state_db, factories)?;
@@ -150,7 +149,7 @@ impl<'a> EvmTestClient<'a> {
 	}

 	fn state_from_pod(spec: &'a spec::Spec, factories: &Factories, pod_state: pod_state::PodState) -> Result<state::State<state_db::StateDB>, EvmTestError> {
-		let db = Arc::new(kvdb::in_memory(db::NUM_COLUMNS.expect("We use column-based DB; qed")));
+		let db = Arc::new(kvdb_memorydb::create(db::NUM_COLUMNS.expect("We use column-based DB; qed")));
 		let journal_db = journaldb::new(db.clone(), journaldb::Algorithm::EarlyMerge, db::COL_STATE);
 		let state_db = state_db::StateDB::new(journal_db, 5 * 1024 * 1024);
 		let mut state = state::State::new(
--- a/ethcore/src/client/test_client.rs
+++ b/ethcore/src/client/test_client.rs
@@ -27,7 +27,7 @@ use bigint::prelude::U256;
 use bigint::hash::H256;
 use parking_lot::RwLock;
 use util::*;
-use kvdb::{Database, DatabaseConfig};
+use kvdb_rocksdb::{Database, DatabaseConfig};
 use bytes::Bytes;
 use rlp::*;
 use ethkey::{Generator, Random};
--- a/ethcore/src/engines/authority_round/mod.rs
+++ b/ethcore/src/engines/authority_round/mod.rs
@@ -44,15 +44,18 @@ use bigint::hash::{H256, H520};
 use semantic_version::SemanticVersion;
 use parking_lot::{Mutex, RwLock};
 use unexpected::{Mismatch, OutOfBounds};
-use util::*;
-use bytes::Bytes;
+use util::Address;

 mod finality;

 /// `AuthorityRound` params.
 pub struct AuthorityRoundParams {
-	/// Time to wait before next block or authority switching.
-	pub step_duration: Duration,
+	/// Time to wait before next block or authority switching,
+	/// in seconds.
+	///
+	/// Deliberately typed as u16 as too high of a value leads
+	/// to slow block issuance.
+	pub step_duration: u16,
 	/// Starting step,
 	pub start_step: Option<u64>,
 	/// Valid validators.
@@ -65,18 +68,31 @@ pub struct AuthorityRoundParams {
 	pub immediate_transitions: bool,
 	/// Block reward in base units.
 	pub block_reward: U256,
+	/// Number of accepted uncles transition block.
+	pub maximum_uncle_count_transition: u64,
+	/// Number of accepted uncles.
+	pub maximum_uncle_count: usize,
 }

+const U16_MAX: usize = ::std::u16::MAX as usize;
+
 impl From<ethjson::spec::AuthorityRoundParams> for AuthorityRoundParams {
 	fn from(p: ethjson::spec::AuthorityRoundParams) -> Self {
+		let mut step_duration_usize: usize = p.step_duration.into();
+		if step_duration_usize > U16_MAX {
+			step_duration_usize = U16_MAX;
+			warn!(target: "engine", "step_duration is too high ({}), setting it to {}", step_duration_usize, U16_MAX);
+		}
 		AuthorityRoundParams {
-			step_duration: Duration::from_secs(p.step_duration.into()),
+			step_duration: step_duration_usize as u16,
 			validators: new_validator_set(p.validators),
 			start_step: p.start_step.map(Into::into),
 			validate_score_transition: p.validate_score_transition.map_or(0, Into::into),
 			validate_step_transition: p.validate_step_transition.map_or(0, Into::into),
 			immediate_transitions: p.immediate_transitions.unwrap_or(false),
 			block_reward: p.block_reward.map_or_else(Default::default, Into::into),
+			maximum_uncle_count_transition: p.maximum_uncle_count_transition.map_or(0, Into::into),
+			maximum_uncle_count: p.maximum_uncle_count.map_or(0, Into::into),
 		}
 	}
 }
@@ -86,40 +102,83 @@ impl From<ethjson::spec::AuthorityRoundParams> for AuthorityRoundParams {
 struct Step {
 	calibrate: bool, // whether calibration is enabled.
 	inner: AtomicUsize,
-	duration: Duration,
+	duration: u16,
 }

 impl Step {
 	fn load(&self) -> usize { self.inner.load(AtomicOrdering::SeqCst) }
 	fn duration_remaining(&self) -> Duration {
 		let now = unix_now();
-		let step_end = self.duration * (self.load() as u32 + 1);
-		if step_end > now {
-			step_end - now
-		} else {
-			Duration::from_secs(0)
+		let expected_seconds = (self.load() as u64)
+			.checked_add(1)
+			.and_then(|ctr| ctr.checked_mul(self.duration as u64))
+			.map(Duration::from_secs);
+
+		match expected_seconds {
+			Some(step_end) if step_end > now => step_end - now,
+			Some(_) => Duration::from_secs(0),
+			None => {
+				let ctr = self.load();
+				error!(target: "engine", "Step counter is too high: {}, aborting", ctr);
+				panic!("step counter is too high: {}", ctr)
+			},
 		}
+
 	}
+
 	fn increment(&self) {
-		self.inner.fetch_add(1, AtomicOrdering::SeqCst);
+		use std::usize;
+		// fetch_add won't panic on overflow but will rather wrap
+		// around, leading to zero as the step counter, which might
+		// lead to unexpected situations, so it's better to shut down.
+		if self.inner.fetch_add(1, AtomicOrdering::SeqCst) == usize::MAX {
+			error!(target: "engine", "Step counter is too high: {}, aborting", usize::MAX);
+			panic!("step counter is too high: {}", usize::MAX);
+		}
+
 	}
+
 	fn calibrate(&self) {
 		if self.calibrate {
-			let new_step = unix_now().as_secs() / self.duration.as_secs();
+			let new_step = unix_now().as_secs() / (self.duration as u64);
 			self.inner.store(new_step as usize, AtomicOrdering::SeqCst);
 		}
 	}
-	fn is_future(&self, given: usize) -> bool {
-		if given > self.load() + 1 {
-			// Make absolutely sure that the given step is correct.
-			self.calibrate();
-			given > self.load() + 1
+
+	fn check_future(&self, given: usize) -> Result<(), Option<OutOfBounds<u64>>> {
+		const REJECTED_STEP_DRIFT: usize = 4;
+
+		// Verify if the step is correct.
+		if given <= self.load() {
+			return Ok(());
+		}
+
+		// Make absolutely sure that the given step is incorrect.
+		self.calibrate();
+		let current = self.load();
+
+		// reject blocks too far in the future
+		if given > current + REJECTED_STEP_DRIFT {
+			Err(None)
+		// wait a bit for blocks in near future
+		} else if given > current {
+			let d = self.duration as u64;
+			Err(Some(OutOfBounds {
+				min: None,
+				max: Some(d * current as u64),
+				found: d * given as u64,
+			}))
 		} else {
-			false
+			Ok(())
 		}
 	}
 }

+// Chain scoring: total weight is sqrt(U256::max_value())*height - step
+fn calculate_score(parent_step: U256, current_step: U256) -> U256 {
+	U256::from(U128::max_value()) + parent_step - current_step
+}
+
 struct EpochManager {
 	epoch_transition_hash: H256,
 	epoch_transition_number: BlockNumber,
@@ -218,6 +277,8 @@ pub struct AuthorityRound {
 	epoch_manager: Mutex<EpochManager>,
 	immediate_transitions: bool,
 	block_reward: U256,
+	maximum_uncle_count_transition: u64,
+	maximum_uncle_count: usize,
 	machine: EthereumMachine,
 }

@@ -229,9 +290,11 @@ struct EpochVerifier {

 impl super::EpochVerifier<EthereumMachine> for EpochVerifier {
 	fn verify_light(&self, header: &Header) -> Result<(), Error> {
+		// Validate the timestamp
+		verify_timestamp(&*self.step, header_step(header)?)?;
 		// always check the seal since it's fast.
 		// nothing heavier to do.
-		verify_external(header, &self.subchain_validators, &*self.step, |_| {})
+		verify_external(header, &self.subchain_validators)
 	}

 	fn check_finality_proof(&self, proof: &[u8]) -> Option<Vec<H256>> {
@@ -255,7 +318,7 @@ impl super::EpochVerifier<EthereumMachine> for EpochVerifier {
 			//
 			// `verify_external` checks that signature is correct and author == signer.
 			if header.seal().len() != 2 { return None }
-			otry!(verify_external(header, &self.subchain_validators, &*self.step, |_| {}).ok());
+			otry!(verify_external(header, &self.subchain_validators).ok());

 			let newly_finalized = otry!(finality_checker.push_hash(header.hash(), header.author().clone()).ok());
 			finalized.extend(newly_finalized);
@@ -265,16 +328,6 @@ impl super::EpochVerifier<EthereumMachine> for EpochVerifier {
 	}
 }

-// Report misbehavior
-#[derive(Debug)]
-#[allow(dead_code)]
-enum Report {
-	// Malicious behavior
-	Malicious(Address, BlockNumber, Bytes),
-	// benign misbehavior
-	Benign(Address, BlockNumber),
-}
-
 fn header_step(header: &Header) -> Result<usize, ::rlp::DecoderError> {
 	UntrustedRlp::new(&header.seal().get(0).expect("was either checked with verify_block_basic or is genesis; has 2 fields; qed (Make sure the spec file has a correct genesis seal)")).as_val()
 }
@@ -293,28 +346,35 @@ fn is_step_proposer(validators: &ValidatorSet, bh: &H256, step: usize, address:
 	step_proposer(validators, bh, step) == *address
 }

-fn verify_external<F: Fn(Report)>(header: &Header, validators: &ValidatorSet, step: &Step, report: F)
-	-> Result<(), Error>
-{
+fn verify_timestamp(step: &Step, header_step: usize) -> Result<(), BlockError> {
+	match step.check_future(header_step) {
+		Err(None) => {
+			trace!(target: "engine", "verify_timestamp: block from the future");
+			Err(BlockError::InvalidSeal.into())
+		},
+		Err(Some(oob)) => {
+			// NOTE This error might be returned only in early stage of verification (Stage 1).
+			// Returning it further won't recover the sync process.
+			trace!(target: "engine", "verify_timestamp: block too early");
+			Err(BlockError::TemporarilyInvalid(oob).into())
+		},
+		Ok(_) => Ok(()),
+	}
+}
+
+fn verify_external(header: &Header, validators: &ValidatorSet) -> Result<(), Error> {
 	let header_step = header_step(header)?;

-	// Give one step slack if step is lagging, double vote is still not possible.
-	if step.is_future(header_step) {
-		trace!(target: "engine", "verify_block_external: block from the future");
-		report(Report::Benign(*header.author(), header.number()));
-		Err(BlockError::InvalidSeal)?
-	} else {
-		let proposer_signature = header_signature(header)?;
-		let correct_proposer = validators.get(header.parent_hash(), header_step);
-		let is_invalid_proposer = *header.author() != correct_proposer ||
-			!verify_address(&correct_proposer, &proposer_signature, &header.bare_hash())?;
+	let proposer_signature = header_signature(header)?;
+	let correct_proposer = validators.get(header.parent_hash(), header_step);
+	let is_invalid_proposer = *header.author() != correct_proposer ||
+		!verify_address(&correct_proposer, &proposer_signature, &header.bare_hash())?;

-		if is_invalid_proposer {
-			trace!(target: "engine", "verify_block_external: bad proposer for step: {}", header_step);
-			Err(EngineError::NotProposer(Mismatch { expected: correct_proposer, found: header.author().clone() }))?
-		} else {
-			Ok(())
-		}
+	if is_invalid_proposer {
+		trace!(target: "engine", "verify_block_external: bad proposer for step: {}", header_step);
+		Err(EngineError::NotProposer(Mismatch { expected: correct_proposer, found: header.author().clone() }))?
+	} else {
+		Ok(())
 	}
 }

@@ -346,8 +406,12 @@ impl AsMillis for Duration {
 impl AuthorityRound {
 	/// Create a new instance of AuthorityRound engine.
 	pub fn new(our_params: AuthorityRoundParams, machine: EthereumMachine) -> Result<Arc<Self>, Error> {
+		if our_params.step_duration == 0 {
+			error!(target: "engine", "Authority Round step duration can't be zero, aborting");
+			panic!("authority_round: step duration can't be zero")
+		}
 		let should_timeout = our_params.start_step.is_none();
-		let initial_step = our_params.start_step.unwrap_or_else(|| (unix_now().as_secs() / our_params.step_duration.as_secs())) as usize;
+		let initial_step = our_params.start_step.unwrap_or_else(|| (unix_now().as_secs() / (our_params.step_duration as u64))) as usize;
 		let engine = Arc::new(
 			AuthorityRound {
 				transition_service: IoService::<()>::start()?,
@@ -365,6 +429,8 @@ impl AuthorityRound {
 				epoch_manager: Mutex::new(EpochManager::blank()),
 				immediate_transitions: our_params.immediate_transitions,
 				block_reward: our_params.block_reward,
+				maximum_uncle_count_transition: our_params.maximum_uncle_count_transition,
+				maximum_uncle_count: our_params.maximum_uncle_count,
 				machine: machine,
 			});

@@ -399,9 +465,15 @@ impl IoHandler<()> for TransitionHandler {
 	fn timeout(&self, io: &IoContext<()>, timer: TimerToken) {
 		if timer == ENGINE_TIMEOUT_TOKEN {
 			if let Some(engine) = self.engine.upgrade() {
-				engine.step();
-				let remaining = engine.step.duration_remaining();
-				io.register_timer_once(ENGINE_TIMEOUT_TOKEN, remaining.as_millis())
+				// NOTE we might be lagging by couple of steps in case the timeout
+				// has not been called fast enough.
+				// Make sure to advance up to the actual step.
+				while engine.step.duration_remaining().as_millis() == 0 {
+					engine.step();
+				}
+
+				let next_run_at = engine.step.duration_remaining().as_millis() >> 2;
+				io.register_timer_once(ENGINE_TIMEOUT_TOKEN, next_run_at)
 					.unwrap_or_else(|e| warn!(target: "engine", "Failed to restart consensus step timer: {}.", e))
 			}
 		}
@@ -436,13 +508,23 @@ impl Engine<EthereumMachine> for AuthorityRound {
 		]
 	}

+	fn maximum_uncle_count(&self, block: BlockNumber) -> usize {
+		if block >= self.maximum_uncle_count_transition {
+			self.maximum_uncle_count
+		} else {
+			// fallback to default value
+			2
+		}
+	}
+
 	fn populate_from_parent(&self, header: &mut Header, parent: &Header) {
-		// Chain scoring: total weight is sqrt(U256::max_value())*height - step
-		let new_difficulty = U256::from(U128::max_value()) + header_step(parent).expect("Header has been verified; qed").into() - self.step.load().into();
-		header.set_difficulty(new_difficulty);
+		let parent_step = header_step(parent).expect("Header has been verified; qed");
+		let score = calculate_score(parent_step.into(), self.step.load().into());
+		header.set_difficulty(score);
 	}

 	fn seals_internally(&self) -> Option<bool> {
+		// TODO: accept a `&Call` here so we can query the validator set.
 		Some(self.signer.read().is_some())
 	}

@@ -450,14 +532,30 @@ impl Engine<EthereumMachine> for AuthorityRound {
 	///
 	/// This operation is synchronous and may (quite reasonably) not be available, in which case
 	/// `Seal::None` will be returned.
-	fn generate_seal(&self, block: &ExecutedBlock) -> Seal {
+	fn generate_seal(&self, block: &ExecutedBlock, parent: &Header) -> Seal {
 		// first check to avoid generating signature most of the time
 		// (but there's still a race to the `compare_and_swap`)
 		if !self.can_propose.load(AtomicOrdering::SeqCst) { return Seal::None; }

 		let header = block.header();
+		let parent_step: U256 = header_step(parent)
+			.expect("Header has been verified; qed").into();
+
 		let step = self.step.load();

+		let expected_diff = calculate_score(parent_step, step.into());
+
+		if header.difficulty() != &expected_diff {
+			debug!(target: "engine", "Aborting seal generation. The step has changed in the meantime. {:?} != {:?}",
+				   header.difficulty(), expected_diff);
+			return Seal::None;
+		}
+
+		if parent_step > step.into() {
+			warn!(target: "engine", "Aborting seal generation for invalid step: {} > {}", parent_step, step);
+			return Seal::None;
+		}
+
 		// fetch correct validator set for current epoch, taking into account
 		// finality of previous transitions.
 		let active_set;
@@ -484,6 +582,13 @@ impl Engine<EthereumMachine> for AuthorityRound {
 		};

 		if is_step_proposer(validators, header.parent_hash(), step, header.author()) {
+			// this is guarded against by `can_propose` unless the block was signed
+			// on the same step (implies same key) and on a different node.
+			if parent_step == step.into() {
+				warn!("Attempted to seal block on the same step as parent. Is this authority sealing with more than one node?");
+				return Seal::None;
+			}
+
 			if let Ok(signature) = self.sign(header.bare_hash()) {
 				trace!(target: "engine", "generate_seal: Issuing a block for step {}.", step);

@@ -498,6 +603,7 @@ impl Engine<EthereumMachine> for AuthorityRound {
 			trace!(target: "engine", "generate_seal: {} not a proposer for step {}.",
 				header.author(), step);
 		}
+
 		Seal::None
 	}

@@ -539,28 +645,40 @@ impl Engine<EthereumMachine> for AuthorityRound {
 	}

 	/// Check the number of seal fields.
-	fn verify_block_basic(&self, header: &Header,) -> Result<(), Error> {
+	fn verify_block_basic(&self, header: &Header) -> Result<(), Error> {
 		if header.number() >= self.validate_score_transition && *header.difficulty() >= U256::from(U128::max_value()) {
-			Err(From::from(BlockError::DifficultyOutOfBounds(
+			return Err(From::from(BlockError::DifficultyOutOfBounds(
 				OutOfBounds { min: None, max: Some(U256::from(U128::max_value())), found: *header.difficulty() }
-			)))
-		} else {
-			Ok(())
+			)));
+		}
+
+		// TODO [ToDr] Should this go from epoch manager?
+		// If yes then probably benign reporting needs to be moved further in the verification.
+		let set_number = header.number();
+
+		match verify_timestamp(&*self.step, header_step(header)?) {
+			Err(BlockError::InvalidSeal) => {
+				self.validators.report_benign(header.author(), set_number, header.number());
+				Err(BlockError::InvalidSeal.into())
+			}
+			Err(e) => Err(e.into()),
+			Ok(()) => Ok(()),
 		}
 	}

 	/// Do the step and gas limit validation.
 	fn verify_block_family(&self, header: &Header, parent: &Header) -> Result<(), Error> {
 		let step = header_step(header)?;
-
 		let parent_step = header_step(parent)?;
+		// TODO [ToDr] Should this go from epoch manager?
+		let set_number = header.number();

 		// Ensure header is from the step after parent.
 		if step == parent_step
 			|| (header.number() >= self.validate_step_transition && step <= parent_step) {
 			trace!(target: "engine", "Multiple blocks proposed for step {}.", parent_step);

-			self.validators.report_malicious(header.author(), header.number(), header.number(), Default::default());
+			self.validators.report_malicious(header.author(), set_number, header.number(), Default::default());
 			Err(EngineError::DoubleVote(header.author().clone()))?;
 		}

@@ -573,7 +691,7 @@ impl Engine<EthereumMachine> for AuthorityRound {
 				let skipped_primary = step_proposer(&*self.validators, &parent.hash(), s);
 				// Do not report this signer.
 				if skipped_primary != me {
-					self.validators.report_benign(&skipped_primary, header.number(), header.number());
+					self.validators.report_benign(&skipped_primary, set_number, header.number());
 				}
 				// Stop reporting once validators start repeating.
 				if !reported.insert(skipped_primary) { break; }
@@ -588,9 +706,8 @@ impl Engine<EthereumMachine> for AuthorityRound {
 		// fetch correct validator set for current epoch, taking into account
 		// finality of previous transitions.
 		let active_set;
-
-		let (validators, set_number) = if self.immediate_transitions {
-			(&*self.validators, header.number())
+		let validators = if self.immediate_transitions {
+			&*self.validators
 		} else {
 			// get correct validator set for epoch.
 			let client = match self.client.read().as_ref().and_then(|weak| weak.upgrade()) {
@@ -608,21 +725,12 @@ impl Engine<EthereumMachine> for AuthorityRound {
 			}

 			active_set = epoch_manager.validators().clone();
-			(&active_set as &_, epoch_manager.epoch_transition_number)
-		};
-
-		// always report with "self.validators" so that the report actually gets
-		// to the contract.
-		let report = |report| match report {
-			Report::Benign(address, block_number) =>
-				self.validators.report_benign(&address, set_number, block_number),
-			Report::Malicious(address, block_number, proof) =>
-				self.validators.report_malicious(&address, set_number, block_number, proof),
+			&active_set as &_
 		};

 		// verify signature against fixed list, but reports should go to the
 		// contract itself.
-		verify_external(header, validators, &*self.step, report)
+		verify_external(header, validators)
 	}

 	fn genesis_epoch_data(&self, header: &Header, call: &Call) -> Result<Vec<u8>, String> {
@@ -850,17 +958,51 @@ mod tests {
 		let b2 = b2.close_and_lock();

 		engine.set_signer(tap.clone(), addr1, "1".into());
-		if let Seal::Regular(seal) = engine.generate_seal(b1.block()) {
+		if let Seal::Regular(seal) = engine.generate_seal(b1.block(), &genesis_header) {
 			assert!(b1.clone().try_seal(engine, seal).is_ok());
 			// Second proposal is forbidden.
-			assert!(engine.generate_seal(b1.block()) == Seal::None);
+			assert!(engine.generate_seal(b1.block(), &genesis_header) == Seal::None);
 		}

 		engine.set_signer(tap, addr2, "2".into());
-		if let Seal::Regular(seal) = engine.generate_seal(b2.block()) {
+		if let Seal::Regular(seal) = engine.generate_seal(b2.block(), &genesis_header) {
 			assert!(b2.clone().try_seal(engine, seal).is_ok());
 			// Second proposal is forbidden.
-			assert!(engine.generate_seal(b2.block()) == Seal::None);
+			assert!(engine.generate_seal(b2.block(), &genesis_header) == Seal::None);
+		}
+	}
+
+	#[test]
+	fn checks_difficulty_in_generate_seal() {
+		let tap = Arc::new(AccountProvider::transient_provider());
+		let addr1 = tap.insert_account(keccak("1").into(), "1").unwrap();
+		let addr2 = tap.insert_account(keccak("0").into(), "0").unwrap();
+
+		let spec = Spec::new_test_round();
+		let engine = &*spec.engine;
+
+		let genesis_header = spec.genesis_header();
+		let db1 = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
+		let db2 = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
+		let last_hashes = Arc::new(vec![genesis_header.hash()]);
+
+		let b1 = OpenBlock::new(engine, Default::default(), false, db1, &genesis_header, last_hashes.clone(), addr1, (3141562.into(), 31415620.into()), vec![], false).unwrap();
+		let b1 = b1.close_and_lock();
+		let b2 = OpenBlock::new(engine, Default::default(), false, db2, &genesis_header, last_hashes, addr2, (3141562.into(), 31415620.into()), vec![], false).unwrap();
+		let b2 = b2.close_and_lock();
+
+		engine.set_signer(tap.clone(), addr1, "1".into());
+		match engine.generate_seal(b1.block(), &genesis_header) {
+			Seal::None | Seal::Proposal(_) => panic!("wrong seal"),
+			Seal::Regular(_) => {
+				engine.step();
+
+				engine.set_signer(tap.clone(), addr2, "0".into());
+				match engine.generate_seal(b2.block(), &genesis_header) {
+					Seal::Regular(_) | Seal::Proposal(_) => panic!("sealed despite wrong difficulty"),
+					Seal::None => {}
+				}
+			}
 		}
 	}

@@ -911,8 +1053,7 @@ mod tests {
 		assert!(engine.verify_block_family(&header, &parent_header).is_ok());
 		assert!(engine.verify_block_external(&header).is_ok());
 		header.set_seal(vec![encode(&5usize).into_vec(), encode(&(&*signature as &[u8])).into_vec()]);
-		assert!(engine.verify_block_family(&header, &parent_header).is_ok());
-		assert!(engine.verify_block_external(&header).is_err());
+		assert!(engine.verify_block_basic(&header).is_err());
 	}

 	#[test]
@@ -943,12 +1084,14 @@ mod tests {
 	fn reports_skipped() {
 		let last_benign = Arc::new(AtomicUsize::new(0));
 		let params = AuthorityRoundParams {
-			step_duration: Default::default(),
+			step_duration: 1,
 			start_step: Some(1),
 			validators: Box::new(TestSet::new(Default::default(), last_benign.clone())),
 			validate_score_transition: 0,
 			validate_step_transition: 0,
 			immediate_transitions: true,
+			maximum_uncle_count_transition: 0,
+			maximum_uncle_count: 0,
 			block_reward: Default::default(),
 		};

@@ -976,4 +1119,78 @@ mod tests {
 		assert!(aura.verify_block_family(&header, &parent_header).is_ok());
 		assert_eq!(last_benign.load(AtomicOrdering::SeqCst), 1);
 	}
+
+	#[test]
+	fn test_uncles_transition() {
+		let last_benign = Arc::new(AtomicUsize::new(0));
+		let params = AuthorityRoundParams {
+			step_duration: 1,
+			start_step: Some(1),
+			validators: Box::new(TestSet::new(Default::default(), last_benign.clone())),
+			validate_score_transition: 0,
+			validate_step_transition: 0,
+			immediate_transitions: true,
+			maximum_uncle_count_transition: 1,
+			maximum_uncle_count: 0,
+			block_reward: Default::default(),
+		};
+
+		let aura = {
+			let mut c_params = ::spec::CommonParams::default();
+			c_params.gas_limit_bound_divisor = 5.into();
+			let machine = ::machine::EthereumMachine::regular(c_params, Default::default());
+			AuthorityRound::new(params, machine).unwrap()
+		};
+
+		assert_eq!(aura.maximum_uncle_count(0), 2);
+		assert_eq!(aura.maximum_uncle_count(1), 0);
+		assert_eq!(aura.maximum_uncle_count(100), 0);
+	}
+
+    #[test]
+    #[should_panic(expected="counter is too high")]
+    fn test_counter_increment_too_high() {
+        use super::Step;
+        let step = Step {
+            calibrate: false,
+            inner: AtomicUsize::new(::std::usize::MAX),
+            duration: 1,
+        };
+        step.increment();
+	}
+
+	#[test]
+	#[should_panic(expected="counter is too high")]
+	fn test_counter_duration_remaining_too_high() {
+		use super::Step;
+		let step = Step {
+			calibrate: false,
+			inner: AtomicUsize::new(::std::usize::MAX),
+			duration: 1,
+		};
+		step.duration_remaining();
+	}
+
+	#[test]
+	#[should_panic(expected="authority_round: step duration can't be zero")]
+	fn test_step_duration_zero() {
+		let last_benign = Arc::new(AtomicUsize::new(0));
+		let params = AuthorityRoundParams {
+			step_duration: 0,
+			start_step: Some(1),
+			validators: Box::new(TestSet::new(Default::default(), last_benign.clone())),
+			validate_score_transition: 0,
+			validate_step_transition: 0,
+			immediate_transitions: true,
+			maximum_uncle_count_transition: 0,
+			maximum_uncle_count: 0,
+			block_reward: Default::default(),
+		};
+
+		let mut c_params = ::spec::CommonParams::default();
+		c_params.gas_limit_bound_divisor = 5.into();
+		let machine = ::machine::EthereumMachine::regular(c_params, Default::default());
+		AuthorityRound::new(params, machine).unwrap();
+	}
 }
+
--- a/ethcore/src/engines/basic_authority.rs
+++ b/ethcore/src/engines/basic_authority.rs
@@ -107,7 +107,7 @@ impl Engine<EthereumMachine> for BasicAuthority {
 	}

 	/// Attempt to seal the block internally.
-	fn generate_seal(&self, block: &ExecutedBlock) -> Seal {
+	fn generate_seal(&self, block: &ExecutedBlock, _parent: &Header) -> Seal {
 		let header = block.header();
 		let author = header.author();
 		if self.validators.contains(header.parent_hash(), author) {
@@ -251,7 +251,7 @@ mod tests {
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, addr, (3141562.into(), 31415620.into()), vec![], false).unwrap();
 		let b = b.close_and_lock();
-		if let Seal::Regular(seal) = engine.generate_seal(b.block()) {
+		if let Seal::Regular(seal) = engine.generate_seal(b.block(), &genesis_header) {
 			assert!(b.try_seal(engine, seal).is_ok());
 		}
 	}
--- a/ethcore/src/engines/instant_seal.rs
+++ b/ethcore/src/engines/instant_seal.rs
@@ -43,7 +43,7 @@ impl<M: Machine> Engine<M> for InstantSeal<M>

 	fn seals_internally(&self) -> Option<bool> { Some(true) }

-	fn generate_seal(&self, block: &M::LiveBlock) -> Seal {
+	fn generate_seal(&self, block: &M::LiveBlock, _parent: &M::Header) -> Seal {
 		if block.transactions().is_empty() { Seal::None } else { Seal::Regular(Vec::new()) }
 	}

@@ -72,7 +72,7 @@ mod tests {
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes, Address::default(), (3141562.into(), 31415620.into()), vec![], false).unwrap();
 		let b = b.close_and_lock();
-		if let Seal::Regular(seal) = engine.generate_seal(b.block()) {
+		if let Seal::Regular(seal) = engine.generate_seal(b.block(), &genesis_header) {
 			assert!(b.try_seal(engine, seal).is_ok());
 		}
 	}
--- a/ethcore/src/engines/mod.rs
+++ b/ethcore/src/engines/mod.rs
@@ -192,7 +192,8 @@ pub trait Engine<M: Machine>: Sync + Send {
 	fn extra_info(&self, _header: &M::Header) -> BTreeMap<String, String> { BTreeMap::new() }

 	/// Maximum number of uncles a block is allowed to declare.
-	fn maximum_uncle_count(&self) -> usize { 2 }
+	fn maximum_uncle_count(&self, _block: BlockNumber) -> usize { 0 }
+
 	/// The number of generations back that uncles can be.
 	fn maximum_uncle_age(&self) -> usize { 6 }

@@ -225,7 +226,7 @@ pub trait Engine<M: Machine>: Sync + Send {
 	///
 	/// It is fine to require access to state or a full client for this function, since
 	/// light clients do not generate seals.
-	fn generate_seal(&self, _block: &M::LiveBlock) -> Seal { Seal::None }
+	fn generate_seal(&self, _block: &M::LiveBlock, _parent: &M::Header) -> Seal { Seal::None }

 	/// Verify a locally-generated seal of a header.
 	///
@@ -363,7 +364,7 @@ pub trait EthEngine: Engine<::machine::EthereumMachine> {
 	}

 	/// The nonce with which accounts begin at given block.
-	fn account_start_nonce(&self, block: u64) -> U256 {
+	fn account_start_nonce(&self, block: BlockNumber) -> U256 {
 		self.machine().account_start_nonce(block)
 	}

--- a/ethcore/src/engines/null_engine.rs
+++ b/ethcore/src/engines/null_engine.rs
@@ -16,6 +16,7 @@

 use bigint::prelude::U256;
 use engines::Engine;
+use header::BlockNumber;
 use parity_machine::{Header, LiveBlock, WithBalances};

 /// Params for a null engine.
@@ -95,6 +96,8 @@ impl<M: WithBalances> Engine<M> for NullEngine<M> {
 		self.machine.note_rewards(block, &[(author, result_block_reward)], &uncle_rewards)
 	}

+	fn maximum_uncle_count(&self, _block: BlockNumber) -> usize { 2 }
+
 	fn verify_local_seal(&self, _header: &M::Header) -> Result<(), M::Error> {
 		Ok(())
 	}
--- a/ethcore/src/engines/tendermint/mod.rs
+++ b/ethcore/src/engines/tendermint/mod.rs
@@ -450,7 +450,7 @@ impl Engine<EthereumMachine> for Tendermint {

 	fn machine(&self) -> &EthereumMachine { &self.machine }

-	fn maximum_uncle_count(&self) -> usize { 0 }
+	fn maximum_uncle_count(&self, _block: BlockNumber) -> usize { 0 }

 	fn maximum_uncle_age(&self) -> usize { 0 }

@@ -483,7 +483,7 @@ impl Engine<EthereumMachine> for Tendermint {
 	///
 	/// This operation is synchronous and may (quite reasonably) not be available, in which case
 	/// `Seal::None` will be returned.
-	fn generate_seal(&self, block: &ExecutedBlock) -> Seal {
+	fn generate_seal(&self, block: &ExecutedBlock, _parent: &Header) -> Seal {
 		let header = block.header();
 		let author = header.author();
 		// Only proposer can generate seal if None was generated.
@@ -805,7 +805,7 @@ mod tests {
 		let last_hashes = Arc::new(vec![genesis_header.hash()]);
 		let b = OpenBlock::new(spec.engine.as_ref(), Default::default(), false, db.boxed_clone(), &genesis_header, last_hashes, proposer, (3141562.into(), 31415620.into()), vec![], false).unwrap();
 		let b = b.close();
-		if let Seal::Proposal(seal) = spec.engine.generate_seal(b.block()) {
+		if let Seal::Proposal(seal) = spec.engine.generate_seal(b.block(), &genesis_header) {
 			(b, seal)
 		} else {
 			panic!()
--- a/ethcore/src/engines/validator_set/contract.rs
+++ b/ethcore/src/engines/validator_set/contract.rs
@@ -171,22 +171,36 @@ mod tests {

 		// Make sure reporting can be done.
 		client.miner().set_gas_floor_target(1_000_000.into());
-
 		client.miner().set_engine_signer(v1, "".into()).unwrap();
+
+		// Check a block that is a bit in future, reject it but don't report the validator.
 		let mut header = Header::default();
 		let seal = vec![encode(&5u8).into_vec(), encode(&(&H520::default() as &[u8])).into_vec()];
 		header.set_seal(seal);
 		header.set_author(v1);
 		header.set_number(2);
 		header.set_parent_hash(client.chain_info().best_block_hash);
-
-		// `reportBenign` when the designated proposer releases block from the future (bad clock).
 		assert!(client.engine().verify_block_external(&header).is_err());
+		client.engine().step();
+		assert_eq!(client.chain_info().best_block_number, 0);
+
+		// Now create one that is more in future. That one should be rejected and validator should be reported.
+		let mut header = Header::default();
+		let seal = vec![encode(&8u8).into_vec(), encode(&(&H520::default() as &[u8])).into_vec()];
+		header.set_seal(seal);
+		header.set_author(v1);
+		header.set_number(2);
+		header.set_parent_hash(client.chain_info().best_block_hash);
+		// `reportBenign` when the designated proposer releases block from the future (bad clock).
+		assert!(client.engine().verify_block_basic(&header).is_err());
 		// Seal a block.
 		client.engine().step();
 		assert_eq!(client.chain_info().best_block_number, 1);
 		// Check if the unresponsive validator is `disliked`.
-		assert_eq!(client.call_contract(BlockId::Latest, validator_contract, "d8f2e0bf".from_hex().unwrap()).unwrap().to_hex(), "0000000000000000000000007d577a597b2742b498cb5cf0c26cdcd726d39e6e");
+		assert_eq!(
+			client.call_contract(BlockId::Latest, validator_contract, "d8f2e0bf".from_hex().unwrap()).unwrap().to_hex(),
+			"0000000000000000000000007d577a597b2742b498cb5cf0c26cdcd726d39e6e"
+		);
 		// Simulate a misbehaving validator by handling a double proposal.
 		let header = client.best_block_header().decode();
 		assert!(client.engine().verify_block_family(&header, &header).is_err());
--- a/ethcore/src/error.rs
+++ b/ethcore/src/error.rs
@@ -168,6 +168,8 @@ pub enum BlockError {
 	InvalidReceiptsRoot(Mismatch<H256>),
 	/// Timestamp header field is invalid.
 	InvalidTimestamp(OutOfBounds<u64>),
+	/// Timestamp header field is too far in future.
+	TemporarilyInvalid(OutOfBounds<u64>),
 	/// Log bloom header field is invalid.
 	InvalidLogBloom(Mismatch<LogBloom>),
 	/// Parent hash field of header is invalid; this is an invalid error indicating a logic flaw in the codebase.
@@ -213,6 +215,7 @@ impl fmt::Display for BlockError {
 			InvalidGasLimit(ref oob) => format!("Invalid gas limit: {}", oob),
 			InvalidReceiptsRoot(ref mis) => format!("Invalid receipts trie root in header: {}", mis),
 			InvalidTimestamp(ref oob) => format!("Invalid timestamp in header: {}", oob),
+			TemporarilyInvalid(ref oob) => format!("Future timestamp in header: {}", oob),
 			InvalidLogBloom(ref oob) => format!("Invalid log bloom in header: {}", oob),
 			InvalidParentHash(ref mis) => format!("Invalid parent hash: {}", mis),
 			InvalidNumber(ref mis) => format!("Invalid number in header: {}", mis),
--- a/ethcore/src/ethereum/ethash.rs
+++ b/ethcore/src/ethereum/ethash.rs
@@ -26,7 +26,7 @@ use util::Address;
 use unexpected::{OutOfBounds, Mismatch};
 use block::*;
 use error::{BlockError, Error};
-use header::Header;
+use header::{Header, BlockNumber};
 use engines::{self, Engine};
 use ethjson;
 use rlp::{self, UntrustedRlp};
@@ -90,6 +90,10 @@ pub struct EthashParams {
 	pub eip649_delay: u64,
 	/// EIP-649 base reward.
 	pub eip649_reward: Option<U256>,
+	/// EXPIP-2 block height
+	pub expip2_transition: u64,
+	/// EXPIP-2 duration limit
+	pub expip2_duration_limit: u64,
 }

 impl From<ethjson::spec::EthashParams> for EthashParams {
@@ -118,6 +122,8 @@ impl From<ethjson::spec::EthashParams> for EthashParams {
 			eip649_transition: p.eip649_transition.map_or(u64::max_value(), Into::into),
 			eip649_delay: p.eip649_delay.map_or(DEFAULT_EIP649_DELAY, Into::into),
 			eip649_reward: p.eip649_reward.map(Into::into),
+			expip2_transition: p.expip2_transition.map_or(u64::max_value(), Into::into),
+			expip2_duration_limit: p.expip2_duration_limit.map_or(30, Into::into),
 		}
 	}
 }
@@ -181,6 +187,8 @@ impl Engine<EthereumMachine> for Arc<Ethash> {
 		}
 	}

+	fn maximum_uncle_count(&self, _block: BlockNumber) -> usize { 2 }
+
 	fn populate_from_parent(&self, header: &mut Header, parent: &Header) {
 		let difficulty = self.calculate_difficulty(header, parent);
 		header.set_difficulty(difficulty);
@@ -353,7 +361,13 @@ impl Ethash {
 			self.ethash_params.difficulty_bound_divisor
 		};

-		let duration_limit = self.ethash_params.duration_limit;
+		let expip2_hardfork = header.number() >= self.ethash_params.expip2_transition;
+		let duration_limit = if expip2_hardfork {
+			self.ethash_params.expip2_duration_limit
+		} else {
+			self.ethash_params.duration_limit
+		};
+
 		let frontier_limit = self.ethash_params.homestead_transition;

 		let mut target = if header.number() < frontier_limit {
@@ -362,8 +376,7 @@ impl Ethash {
 			} else {
 				*parent.difficulty() + (*parent.difficulty() / difficulty_bound_divisor)
 			}
-		}
-		else {
+		} else {
 			trace!(target: "ethash", "Calculating difficulty parent.difficulty={}, header.timestamp={}, parent.timestamp={}", parent.difficulty(), header.timestamp(), parent.timestamp());
 			//block_diff = parent_diff + parent_diff // 2048 * max(1 - (block_timestamp - parent_timestamp) // 10, -99)
 			let (increment_divisor, threshold) = if header.number() < self.ethash_params.eip100b_transition {
@@ -447,9 +460,12 @@ fn ecip1017_eras_block_reward(era_rounds: u64, mut reward: U256, block_number:u6
 	} else {
 		block_number / era_rounds
 	};
+	let mut divi = U256::from(1);
 	for _ in 0..eras {
-		reward = reward / U256::from(5) * U256::from(4);
+		reward = reward * U256::from(4);
+		divi = divi * U256::from(5);
 	}
+	reward = reward / divi;
 	(eras, reward)
 }

@@ -515,6 +531,11 @@ mod tests {
 		let (eras, reward) = ecip1017_eras_block_reward(eras_rounds, start_reward, block_number);
 		assert_eq!(15, eras);
 		assert_eq!(U256::from_str("271000000000000").unwrap(), reward);
+
+		let block_number = 250000000;
+		let (eras, reward) = ecip1017_eras_block_reward(eras_rounds, start_reward, block_number);
+		assert_eq!(49, eras);
+		assert_eq!(U256::from_str("51212FFBAF0A").unwrap(), reward);
 	}

 	#[test]
--- a/ethcore/src/executive.rs
+++ b/ethcore/src/executive.rs
@@ -486,12 +486,13 @@ impl<'a, B: 'a + StateBackend> Executive<'a, B> {

 				let traces = subtracer.drain();
 				match res {
-					Ok(ref res) => tracer.trace_call(
+					Ok(ref res) if res.apply_state => tracer.trace_call(
 						trace_info,
 						gas - res.gas_left,
 						trace_output,
 						traces
 					),
+					Ok(_) => tracer.trace_failed_call(trace_info, traces, vm::Error::Reverted.into()),
 					Err(ref e) => tracer.trace_failed_call(trace_info, traces, e.into()),
 				};

@@ -574,13 +575,14 @@ impl<'a, B: 'a + StateBackend> Executive<'a, B> {
 		vm_tracer.done_subtrace(subvmtracer);

 		match res {
-			Ok(ref res) => tracer.trace_create(
+			Ok(ref res) if res.apply_state => tracer.trace_create(
 				trace_info,
 				gas - res.gas_left,
 				trace_output.map(|data| output.as_ref().map(|out| out.to_vec()).unwrap_or(data)),
 				created,
 				subtracer.drain()
 			),
+			Ok(_) => tracer.trace_failed_create(trace_info, subtracer.drain(), vm::Error::Reverted.into()),
 			Err(ref e) => tracer.trace_failed_create(trace_info, subtracer.drain(), e.into())
 		};

@@ -936,6 +938,85 @@ mod tests {
 		assert_eq!(vm_tracer.drain().unwrap(), expected_vm_trace);
 	}

+	#[test]
+	fn test_trace_reverted_create() {
+		// code:
+		//
+		// 65 60016000fd - push 5 bytes
+		// 60 00 - push 0
+		// 52 mstore
+		// 60 05 - push 5
+		// 60 1b - push 27
+		// 60 17 - push 23
+		// f0 - create
+		// 60 00 - push 0
+		// 55 sstore
+		//
+		// other code:
+		//
+		// 60 01
+		// 60 00
+		// fd - revert
+
+		let code = "6460016000fd6000526005601b6017f0600055".from_hex().unwrap();
+
+		let sender = Address::from_str("cd1722f3947def4cf144679da39c4c32bdc35681").unwrap();
+		let address = contract_address(CreateContractAddress::FromSenderAndNonce, &sender, &U256::zero(), &[]).0;
+		let mut params = ActionParams::default();
+		params.address = address.clone();
+		params.code_address = address.clone();
+		params.sender = sender.clone();
+		params.origin = sender.clone();
+		params.gas = U256::from(100_000);
+		params.code = Some(Arc::new(code));
+		params.value = ActionValue::Transfer(U256::from(100));
+		params.call_type = CallType::Call;
+		let mut state = get_temp_state();
+		state.add_balance(&sender, &U256::from(100), CleanupMode::NoEmpty).unwrap();
+		let info = EnvInfo::default();
+		let machine = ::ethereum::new_byzantium_test_machine();
+		let mut substate = Substate::new();
+		let mut tracer = ExecutiveTracer::default();
+		let mut vm_tracer = ExecutiveVMTracer::toplevel();
+
+		let FinalizationResult { gas_left, .. } = {
+			let mut ex = Executive::new(&mut state, &info, &machine);
+			let output = BytesRef::Fixed(&mut[0u8;0]);
+			ex.call(params, &mut substate, output, &mut tracer, &mut vm_tracer).unwrap()
+		};
+
+		assert_eq!(gas_left, U256::from(62967));
+
+		let expected_trace = vec![FlatTrace {
+			trace_address: Default::default(),
+			subtraces: 1,
+			action: trace::Action::Call(trace::Call {
+				from: "cd1722f3947def4cf144679da39c4c32bdc35681".into(),
+				to: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
+				value: 100.into(),
+				gas: 100_000.into(),
+				input: vec![],
+				call_type: CallType::Call,
+			}),
+			result: trace::Res::Call(trace::CallResult {
+				gas_used: U256::from(37_033),
+				output: vec![],
+			}),
+		}, FlatTrace {
+			trace_address: vec![0].into_iter().collect(),
+			subtraces: 0,
+			action: trace::Action::Create(trace::Create {
+				from: "b010143a42d5980c7e5ef0e4a4416dc098a4fed3".into(),
+				value: 23.into(),
+				gas: 66_917.into(),
+				init: vec![0x60, 0x01, 0x60, 0x00, 0xfd]
+			}),
+			result: trace::Res::FailedCreate(vm::Error::Reverted.into()),
+		}];
+
+		assert_eq!(tracer.drain(), expected_trace);
+	}
+
 	#[test]
 	fn test_create_contract() {
 		// Tracing is not supported in JIT
--- a/ethcore/src/json_tests/chain.rs
+++ b/ethcore/src/json_tests/chain.rs
@@ -57,7 +57,7 @@ pub fn json_chain_test(json_data: &[u8]) -> Vec<String> {
 			};

 			{
-				let db = Arc::new(::kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0)));
+				let db = Arc::new(::kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0)));
 				let mut config = ClientConfig::default();
 				config.history = 8;
 				let client = Client::new(
--- a/ethcore/src/lib.rs
+++ b/ethcore/src/lib.rs
@@ -113,6 +113,8 @@ extern crate ansi_term;
 extern crate semantic_version;
 extern crate unexpected;
 extern crate kvdb;
+extern crate kvdb_rocksdb;
+extern crate kvdb_memorydb;
 extern crate util_error;
 extern crate snappy;
 extern crate migration;
--- a/ethcore/src/migrations/state/v7.rs
+++ b/ethcore/src/migrations/state/v7.rs
@@ -22,7 +22,7 @@ use std::collections::HashMap;
 use bigint::hash::H256;
 use util::Address;
 use bytes::Bytes;
-use kvdb::Database;
+use kvdb_rocksdb::Database;
 use migration::{Batch, Config, Error, Migration, SimpleMigration, Progress};
 use hash::keccak;
 use std::sync::Arc;
--- a/ethcore/src/migrations/v10.rs
+++ b/ethcore/src/migrations/v10.rs
@@ -26,7 +26,8 @@ use migration::{Error, Migration, Progress, Batch, Config};
 use util::journaldb;
 use bigint::hash::H256;
 use trie::Trie;
-use kvdb::{Database, DBTransaction};
+use kvdb::DBTransaction;
+use kvdb_rocksdb::Database;

 /// Account bloom upgrade routine. If bloom already present, does nothing.
 /// If database empty (no best block), does nothing.
--- a/ethcore/src/migrations/v9.rs
+++ b/ethcore/src/migrations/v9.rs
@@ -18,7 +18,7 @@
 //! This migration consolidates all databases into single one using Column Families.

 use rlp::{Rlp, RlpStream};
-use kvdb::Database;
+use kvdb_rocksdb::Database;
 use migration::{Batch, Config, Error, Migration, Progress};
 use std::sync::Arc;

--- a/ethcore/src/miner/miner.rs
+++ b/ethcore/src/miner/miner.rs
@@ -525,7 +525,13 @@ impl Miner {
 	fn seal_and_import_block_internally(&self, chain: &MiningBlockChainClient, block: ClosedBlock) -> bool {
 		if !block.transactions().is_empty() || self.forced_sealing() || Instant::now() > *self.next_mandatory_reseal.read() {
 			trace!(target: "miner", "seal_block_internally: attempting internal seal.");
-			match self.engine.generate_seal(block.block()) {
+
+			let parent_header = match chain.block_header(BlockId::Hash(*block.header().parent_hash())) {
+				Some(hdr) => hdr.decode(),
+				None => return false,
+			};
+
+			match self.engine.generate_seal(block.block(), &parent_header) {
 				// Save proposal for later seal submission and broadcast it.
 				Seal::Proposal(seal) => {
 					trace!(target: "miner", "Received a Proposal seal.");
--- a/ethcore/src/service.rs
+++ b/ethcore/src/service.rs
@@ -19,7 +19,8 @@
 use std::sync::Arc;
 use std::path::Path;
 use bigint::hash::H256;
-use kvdb::{Database, DatabaseConfig, KeyValueDB};
+use kvdb::KeyValueDB;
+use kvdb_rocksdb::{Database, DatabaseConfig};
 use bytes::Bytes;
 use io::*;
 use spec::Spec;
@@ -82,12 +83,7 @@ impl ClientService {

 		let mut db_config = DatabaseConfig::with_columns(::db::NUM_COLUMNS);

-		// give all rocksdb cache to state column; everything else has its
-		// own caches.
-		if let Some(size) = config.db_cache_size {
-			db_config.set_cache(::db::COL_STATE, size);
-		}
-
+		db_config.memory_budget = config.db_cache_size;
 		db_config.compaction = config.db_compaction.compaction_profile(client_path);
 		db_config.wal = config.db_wal;

--- a/ethcore/src/snapshot/service.rs
+++ b/ethcore/src/snapshot/service.rs
@@ -40,7 +40,7 @@ use parking_lot::{Mutex, RwLock, RwLockReadGuard};
 use util_error::UtilError;
 use bytes::Bytes;
 use util::journaldb::Algorithm;
-use kvdb::{Database, DatabaseConfig};
+use kvdb_rocksdb::{Database, DatabaseConfig};
 use snappy;

 /// Helper for removing directories in case of error.
@@ -682,7 +682,7 @@ mod tests {
 	#[test]
 	fn cannot_finish_with_invalid_chunks() {
 		use bigint::hash::H256;
-		use kvdb::DatabaseConfig;
+		use kvdb_rocksdb::DatabaseConfig;

 		let spec = get_test_spec();
 		let dir = RandomTempPath::new();
--- a/ethcore/src/snapshot/tests/proof_of_authority.rs
+++ b/ethcore/src/snapshot/tests/proof_of_authority.rs
@@ -31,7 +31,7 @@ use tests::helpers;
 use transaction::{Transaction, Action, SignedTransaction};

 use util::Address;
-use kvdb;
+use kvdb_memorydb;

 const PASS: &'static str = "";
 const TRANSITION_BLOCK_1: usize = 2; // block at which the contract becomes activated.
@@ -238,7 +238,7 @@ fn fixed_to_contract_only() {
 	assert_eq!(client.chain_info().best_block_number, 11);
 	let reader = snapshot_helpers::snap(&*client);

-	let new_db = kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0));
+	let new_db = kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0));
 	let spec = spec_fixed_to_contract();

 	// ensure fresh engine's step matches.
@@ -270,7 +270,7 @@ fn fixed_to_contract_to_contract() {

 	assert_eq!(client.chain_info().best_block_number, 16);
 	let reader = snapshot_helpers::snap(&*client);
-	let new_db = kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0));
+	let new_db = kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0));
 	let spec = spec_fixed_to_contract();

 	for _ in 0..16 { spec.engine.step() }
--- a/ethcore/src/snapshot/tests/proof_of_work.rs
+++ b/ethcore/src/snapshot/tests/proof_of_work.rs
@@ -26,7 +26,8 @@ use snapshot::io::{PackedReader, PackedWriter, SnapshotReader, SnapshotWriter};

 use parking_lot::Mutex;
 use snappy;
-use kvdb::{self, KeyValueDB, DBTransaction};
+use kvdb::{KeyValueDB, DBTransaction};
+use kvdb_memorydb;

 use std::sync::Arc;
 use std::sync::atomic::AtomicBool;
@@ -43,7 +44,7 @@ fn chunk_and_restore(amount: u64) {
 	let mut snapshot_path = new_path.as_path().to_owned();
 	snapshot_path.push("SNAP");

-	let old_db = Arc::new(kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0)));
+	let old_db = Arc::new(kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0)));
 	let bc = BlockChain::new(Default::default(), &genesis, old_db.clone());

 	// build the blockchain.
@@ -80,7 +81,7 @@ fn chunk_and_restore(amount: u64) {
 	writer.into_inner().finish(manifest.clone()).unwrap();

 	// restore it.
-	let new_db = Arc::new(kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0)));
+	let new_db = Arc::new(kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0)));
 	let new_chain = BlockChain::new(Default::default(), &genesis, new_db.clone());
 	let mut rebuilder = SNAPSHOT_MODE.rebuilder(new_chain, new_db.clone(), &manifest).unwrap();

@@ -127,7 +128,7 @@ fn checks_flag() {

 	let chunk = stream.out();

-	let db = Arc::new(kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0)));
+	let db = Arc::new(kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0)));
 	let engine = ::spec::Spec::new_test().engine;
 	let chain = BlockChain::new(Default::default(), &genesis, db.clone());

--- a/ethcore/src/snapshot/tests/service.rs
+++ b/ethcore/src/snapshot/tests/service.rs
@@ -27,7 +27,7 @@ use tests::helpers::generate_dummy_client_with_spec_and_data;

 use devtools::RandomTempPath;
 use io::IoChannel;
-use kvdb::{Database, DatabaseConfig};
+use kvdb_rocksdb::{Database, DatabaseConfig};

 struct NoopDBRestore;

--- a/ethcore/src/snapshot/tests/state.rs
+++ b/ethcore/src/snapshot/tests/state.rs
@@ -27,7 +27,7 @@ use error::Error;
 use rand::{XorShiftRng, SeedableRng};
 use bigint::hash::H256;
 use util::journaldb::{self, Algorithm};
-use kvdb::{Database, DatabaseConfig};
+use kvdb_rocksdb::{Database, DatabaseConfig};
 use memorydb::MemoryDB;
 use parking_lot::Mutex;
 use devtools::RandomTempPath;
--- a/ethcore/src/spec/spec.rs
+++ b/ethcore/src/spec/spec.rs
@@ -672,13 +672,13 @@ impl Spec {
 	pub fn genesis_epoch_data(&self) -> Result<Vec<u8>, String> {
 		use transaction::{Action, Transaction};
 		use util::journaldb;
-		use kvdb;
+		use kvdb_memorydb;

 		let genesis = self.genesis_header();

 		let factories = Default::default();
 		let mut db = journaldb::new(
-			Arc::new(kvdb::in_memory(0)),
+			Arc::new(kvdb_memorydb::create(0)),
 			journaldb::Algorithm::Archive,
 			None,
 		);
--- a/ethcore/src/state/mod.rs
+++ b/ethcore/src/state/mod.rs
@@ -1409,7 +1409,7 @@ mod tests {
 	}

 	#[test]
-	fn should_not_trace_delegatecall() {
+	fn should_trace_delegatecall_properly() {
 		init_log();

 		let mut state = get_temp_state();
@@ -1429,7 +1429,7 @@ mod tests {
 		}.sign(&secret(), None);

 		state.init_code(&0xa.into(), FromHex::from_hex("6000600060006000600b618000f4").unwrap()).unwrap();
-		state.init_code(&0xb.into(), FromHex::from_hex("6000").unwrap()).unwrap();
+		state.init_code(&0xb.into(), FromHex::from_hex("60056000526001601ff3").unwrap()).unwrap();
 		let result = state.apply(&info, &machine, &t, true).unwrap();

 		let expected_trace = vec![FlatTrace {
@@ -1444,23 +1444,23 @@ mod tests {
 				call_type: CallType::Call,
 			}),
 			result: trace::Res::Call(trace::CallResult {
-				gas_used: U256::from(721), // in post-eip150
+				gas_used: U256::from(736), // in post-eip150
 				output: vec![]
 			}),
 		}, FlatTrace {
 			trace_address: vec![0].into_iter().collect(),
 			subtraces: 0,
 			action: trace::Action::Call(trace::Call {
-				from: "9cce34f7ab185c7aba1b7c8140d620b4bda941d6".into(),
-				to: 0xa.into(),
+				from: 0xa.into(),
+				to: 0xb.into(),
 				value: 0.into(),
 				gas: 32768.into(),
 				input: vec![],
 				call_type: CallType::DelegateCall,
 			}),
 			result: trace::Res::Call(trace::CallResult {
-				gas_used: 3.into(),
-				output: vec![],
+				gas_used: 18.into(),
+				output: vec![5],
 			}),
 		}];

--- a/ethcore/src/tests/client.rs
+++ b/ethcore/src/tests/client.rs
@@ -27,7 +27,7 @@ use tests::helpers::*;
 use types::filter::Filter;
 use bigint::prelude::U256;
 use util::*;
-use kvdb::{Database, DatabaseConfig};
+use kvdb_rocksdb::{Database, DatabaseConfig};
 use devtools::*;
 use miner::Miner;
 use spec::Spec;
--- a/ethcore/src/tests/helpers.rs
+++ b/ethcore/src/tests/helpers.rs
@@ -232,7 +232,7 @@ pub fn get_test_client_with_blocks(blocks: Vec<Bytes>) -> Arc<Client> {
 }

 fn new_db() -> Arc<::kvdb::KeyValueDB> {
-	Arc::new(::kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0)))
+	Arc::new(::kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0)))
 }

 pub fn generate_dummy_blockchain(block_number: u32) -> BlockChain {
@@ -386,5 +386,7 @@ pub fn get_default_ethash_params() -> EthashParams {
 		eip649_transition: u64::max_value(),
 		eip649_delay: 3_000_000,
 		eip649_reward: None,
+		expip2_transition: u64::max_value(),
+		expip2_duration_limit: 30,
 	}
 }
--- a/ethcore/src/tests/trace.rs
+++ b/ethcore/src/tests/trace.rs
@@ -27,7 +27,7 @@ use client::*;
 use tests::helpers::*;
 use devtools::RandomTempPath;
 use client::{BlockChainClient, Client, ClientConfig};
-use kvdb::{Database, DatabaseConfig};
+use kvdb_rocksdb::{Database, DatabaseConfig};
 use std::sync::Arc;
 use header::Header;
 use miner::Miner;
--- a/ethcore/src/trace/db.rs
+++ b/ethcore/src/trace/db.rs
@@ -416,7 +416,8 @@ mod tests {
 	use bigint::prelude::U256;
 	use bigint::hash::H256;
 	use util::Address;
-	use kvdb::{DBTransaction, in_memory, KeyValueDB};
+	use kvdb::{DBTransaction, KeyValueDB};
+	use kvdb_memorydb;
 	use header::BlockNumber;
 	use trace::{Config, TraceDB, Database as TraceDatabase, DatabaseExtras, ImportRequest};
 	use trace::{Filter, LocalizedTrace, AddressesFilter, TraceError};
@@ -467,7 +468,7 @@ mod tests {
 	}

 	fn new_db() -> Arc<KeyValueDB> {
-		Arc::new(in_memory(::db::NUM_COLUMNS.unwrap_or(0)))
+		Arc::new(kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0)))
 	}

 	#[test]
--- a/ethcore/src/trace/types/trace.rs
+++ b/ethcore/src/trace/types/trace.rs
@@ -77,13 +77,23 @@ pub struct Call {

 impl From<ActionParams> for Call {
 	fn from(p: ActionParams) -> Self {
-		Call {
-			from: p.sender,
-			to: p.address,
-			value: p.value.value(),
-			gas: p.gas,
-			input: p.data.unwrap_or_else(Vec::new),
-			call_type: p.call_type,
+		match p.call_type {
+			CallType::DelegateCall => Call {
+				from: p.address,
+				to: p.code_address,
+				value: p.value.value(),
+				gas: p.gas,
+				input: p.data.unwrap_or_else(Vec::new),
+				call_type: p.call_type,
+			},
+			_ => Call {
+				from: p.sender,
+				to: p.address,
+				value: p.value.value(),
+				gas: p.gas,
+				input: p.data.unwrap_or_else(Vec::new),
+				call_type: p.call_type,
+			},
 		}
 	}
 }
--- a/ethcore/src/tx_filter.rs
+++ b/ethcore/src/tx_filter.rs
@@ -178,7 +178,7 @@ mod test {
 		"#;

 		let spec = Spec::load(&::std::env::temp_dir(), spec_data.as_bytes()).unwrap();
-		let client_db = Arc::new(::kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0)));
+		let client_db = Arc::new(::kvdb_memorydb::create(::db::NUM_COLUMNS.unwrap_or(0)));

 		let client = Client::new(
 			ClientConfig::default(),
--- a/ethcore/src/verification/queue/mod.rs
+++ b/ethcore/src/verification/queue/mod.rs
@@ -505,7 +505,7 @@ impl<K: Kind> VerificationQueue<K> {
 			Err(err) => {
 				match err {
 					// Don't mark future blocks as bad.
-					Error::Block(BlockError::InvalidTimestamp(ref e)) if e.max.is_some() => {},
+					Error::Block(BlockError::TemporarilyInvalid(_)) => {},
 					_ => {
 						self.verification.bad.lock().insert(h.clone());
 					}
--- a/ethcore/src/verification/verification.rs
+++ b/ethcore/src/verification/verification.rs
@@ -137,9 +137,14 @@ pub fn verify_block_family(header: &Header, parent: &Header, engine: &EthEngine,

 fn verify_uncles(header: &Header, bytes: &[u8], bc: &BlockProvider, engine: &EthEngine) -> Result<(), Error> {
 	let num_uncles = UntrustedRlp::new(bytes).at(2)?.item_count()?;
+	let max_uncles = engine.maximum_uncle_count(header.number());
 	if num_uncles != 0 {
-		if num_uncles > engine.maximum_uncle_count() {
-			return Err(From::from(BlockError::TooManyUncles(OutOfBounds { min: None, max: Some(engine.maximum_uncle_count()), found: num_uncles })));
+		if num_uncles > max_uncles {
+			return Err(From::from(BlockError::TooManyUncles(OutOfBounds {
+				min: None,
+				max: Some(max_uncles),
+				found: num_uncles,
+			})));
 		}

 		let mut excluded = HashSet::new();
@@ -268,11 +273,20 @@ pub fn verify_header_params(header: &Header, engine: &EthEngine, is_full: bool)
 	}

 	if is_full {
-		let max_time = get_time().sec as u64 + 30;
-		if header.timestamp() > max_time {
-			return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: Some(max_time), min: None, found: header.timestamp() })))
+		const ACCEPTABLE_DRIFT_SECS: u64 = 15;
+		let max_time = get_time().sec as u64 + ACCEPTABLE_DRIFT_SECS;
+		let invalid_threshold = max_time + ACCEPTABLE_DRIFT_SECS * 9;
+		let timestamp = header.timestamp();
+
+		if timestamp > invalid_threshold {
+			return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: Some(max_time), min: None, found: timestamp })))
+		}
+
+		if timestamp > max_time {
+			return Err(From::from(BlockError::TemporarilyInvalid(OutOfBounds { max: Some(max_time), min: None, found: timestamp })))
 		}
 	}
+
 	Ok(())
 }

@@ -354,11 +368,13 @@ mod tests {
 		}
 	}

-	fn check_fail_timestamp(result: Result<(), Error>) {
+	fn check_fail_timestamp(result: Result<(), Error>, temp: bool) {
+		let name = if temp { "TemporarilyInvalid" } else { "InvalidTimestamp" };
 		match result {
-			Err(Error::Block(BlockError::InvalidTimestamp(_))) => (),
-			Err(other) => panic!("Block verification failed.\nExpected: InvalidTimestamp\nGot: {:?}", other),
-			Ok(_) => panic!("Block verification failed.\nExpected: InvalidTimestamp\nGot: Ok"),
+			Err(Error::Block(BlockError::InvalidTimestamp(_))) if !temp => (),
+			Err(Error::Block(BlockError::TemporarilyInvalid(_))) if temp => (),
+			Err(other) => panic!("Block verification failed.\nExpected: {}\nGot: {:?}", name, other),
+			Ok(_) => panic!("Block verification failed.\nExpected: {}\nGot: Ok", name),
 		}
 	}

@@ -638,11 +654,17 @@ mod tests {

 		header = good.clone();
 		header.set_timestamp(2450000000);
-		check_fail_timestamp(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine));
+		check_fail_timestamp(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine), false);

 		header = good.clone();
-		header.set_timestamp(get_time().sec as u64 + 40);
-		check_fail_timestamp(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine));
+		header.set_timestamp(get_time().sec as u64 + 20);
+		check_fail_timestamp(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine), true);
+
+		header = good.clone();
+		header.set_timestamp(get_time().sec as u64 + 10);
+		header.set_uncles_hash(good_uncles_hash.clone());
+		header.set_transactions_root(good_transactions_root.clone());
+		check_ok(basic_test(&create_test_block_with_data(&header, &good_transactions, &good_uncles), engine));

 		header = good.clone();
 		header.set_number(9);
@@ -653,7 +675,7 @@ mod tests {
 		let mut bad_uncles = good_uncles.clone();
 		bad_uncles.push(good_uncle1.clone());
 		check_fail(family_test(&create_test_block_with_data(&header, &good_transactions, &bad_uncles), engine, &bc),
-			TooManyUncles(OutOfBounds { max: Some(engine.maximum_uncle_count()), min: None, found: bad_uncles.len() }));
+			TooManyUncles(OutOfBounds { max: Some(engine.maximum_uncle_count(header.number())), min: None, found: bad_uncles.len() }));

 		header = good.clone();
 		bad_uncles = vec![ good_uncle1.clone(), good_uncle1.clone() ];
--- a/ethcore/wasm/src/env.rs
+++ b/ethcore/wasm/src/env.rs
@@ -25,12 +25,12 @@ pub const SIGNATURES: &'static [UserFunctionDescriptor] = &[
 	Static(
 		"_storage_read",
 		&[I32; 2],
-		Some(I32),
+		None,
 	),
 	Static(
 		"_storage_write",
 		&[I32; 2],
-		Some(I32),
+		None,
 	),
 	Static(
 		"_balance",
@@ -115,7 +115,7 @@ pub const SIGNATURES: &'static [UserFunctionDescriptor] = &[
 	Static(
 		"_blockhash",
 		&[I64, I32],
-		Some(I32),
+		None,
 	),
 	Static(
 		"_coinbase",
--- a/ethcore/wasm/src/lib.rs
+++ b/ethcore/wasm/src/lib.rs
@@ -31,6 +31,7 @@ mod result;
 #[cfg(test)]
 mod tests;
 mod env;
+mod panic_payload;

 const DEFAULT_STACK_SPACE: u32 = 5 * 1024 * 1024;

--- a/ethcore/wasm/src/panic_payload.rs
+++ b/ethcore/wasm/src/panic_payload.rs
@@ -0,0 +1,168 @@
+// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+use byteorder::{LittleEndian, ReadBytesExt};
+use std::io::{self, Read};
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct PanicPayload {
+	pub msg: Option<String>,
+	pub file: Option<String>,
+	pub line: Option<u32>,
+	pub col: Option<u32>,
+}
+
+fn read_string(rdr: &mut io::Cursor<&[u8]>) -> io::Result<Option<String>> {
+	let string_len = rdr.read_u32::<LittleEndian>()?;
+	let string = if string_len == 0 {
+		None
+	} else {
+		let mut content = vec![0; string_len as usize];
+		rdr.read_exact(&mut content)?;
+		Some(String::from_utf8_lossy(&content).into_owned())
+	};
+	Ok(string)
+}
+
+pub fn decode(raw: &[u8]) -> PanicPayload {
+	let mut rdr = io::Cursor::new(raw);
+	let msg = read_string(&mut rdr).ok().and_then(|x| x);
+	let file = read_string(&mut rdr).ok().and_then(|x| x);
+	let line = rdr.read_u32::<LittleEndian>().ok();
+	let col = rdr.read_u32::<LittleEndian>().ok();
+	PanicPayload {
+		msg: msg,
+		file: file,
+		line: line,
+		col: col,
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use super::*;
+	use byteorder::WriteBytesExt;
+
+	fn write_u32(payload: &mut Vec<u8>, val: u32) {
+		payload.write_u32::<LittleEndian>(val).unwrap();
+	}
+
+	fn write_bytes(payload: &mut Vec<u8>, bytes: &[u8]) {
+		write_u32(payload, bytes.len() as u32);
+		payload.extend(bytes);
+	}
+
+	#[test]
+	fn it_works() {
+		let mut raw = Vec::new();
+		write_bytes(&mut raw, b"msg");
+		write_bytes(&mut raw, b"file");
+		write_u32(&mut raw, 1);
+		write_u32(&mut raw, 2);
+
+		let payload = decode(&raw);
+
+		assert_eq!(
+			payload,
+			PanicPayload {
+				msg: Some("msg".to_string()),
+				file: Some("file".to_string()),
+				line: Some(1),
+				col: Some(2),
+			}
+		);
+	}
+
+	#[test]
+	fn only_msg() {
+		let mut raw = Vec::new();
+		write_bytes(&mut raw, b"msg");
+
+		let payload = decode(&raw);
+
+		assert_eq!(
+			payload,
+			PanicPayload {
+				msg: Some("msg".to_string()),
+				file: None,
+				line: None,
+				col: None,
+			}
+		);
+	}
+
+	#[test]
+	fn invalid_utf8() {
+		let mut raw = Vec::new();
+		write_bytes(&mut raw, b"\xF0\x90\x80msg");
+		write_bytes(&mut raw, b"file");
+		write_u32(&mut raw, 1);
+		write_u32(&mut raw, 2);
+
+		let payload = decode(&raw);
+
+		assert_eq!(
+			payload,
+			PanicPayload {
+				msg: Some("<EFBFBD>msg".to_string()),
+				file: Some("file".to_string()),
+				line: Some(1),
+				col: Some(2),
+			}
+		);
+	}
+
+	#[test]
+	fn trailing_data() {
+		let mut raw = Vec::new();
+		write_bytes(&mut raw, b"msg");
+		write_bytes(&mut raw, b"file");
+		write_u32(&mut raw, 1);
+		write_u32(&mut raw, 2);
+		write_u32(&mut raw, 0xdeadbeef);
+
+		let payload = decode(&raw);
+
+		assert_eq!(
+			payload,
+			PanicPayload {
+				msg: Some("msg".to_string()),
+				file: Some("file".to_string()),
+				line: Some(1),
+				col: Some(2),
+			}
+		);
+	}
+
+	#[test]
+	fn empty_str_is_none() {
+		let mut raw = Vec::new();
+		write_bytes(&mut raw, b"msg");
+		write_bytes(&mut raw, b"");
+
+		let payload = decode(&raw);
+
+		assert_eq!(
+			payload,
+			PanicPayload {
+				msg: Some("msg".to_string()),
+				file: None,
+				line: None,
+				col: None,
+			}
+		);
+	}
+}
--- a/ethcore/wasm/src/runtime.rs
+++ b/ethcore/wasm/src/runtime.rs
@@ -21,6 +21,7 @@ use std::sync::Arc;
 use byteorder::{LittleEndian, ByteOrder};

 use vm;
+use panic_payload;
 use parity_wasm::interpreter;
 use wasm_utils::rules;
 use bigint::prelude::U256;
@@ -167,7 +168,7 @@ impl<'a, 'b> Runtime<'a, 'b> {

 		self.ext.set_storage(key, val).map_err(|_| UserTrap::StorageUpdateError)?;

-		Ok(Some(0i32.into()))
+		Ok(None)
 	}

 	/// Read from the storage to wasm memory
@@ -183,7 +184,7 @@ impl<'a, 'b> Runtime<'a, 'b> {

 		self.memory.set(val_ptr as u32, &*val)?;

-		Ok(Some(0.into()))
+		Ok(None)
 	}

 	/// Fetches balance for address
@@ -626,12 +627,26 @@ impl<'a, 'b> Runtime<'a, 'b> {
 	fn user_panic(&mut self, context: InterpreterCallerContext)
 		-> Result<Option<interpreter::RuntimeValue>, InterpreterError>
 	{
-		let msg_len = context.value_stack.pop_as::<i32>()? as u32;
-		let msg_ptr = context.value_stack.pop_as::<i32>()? as u32;
-
-		let msg = String::from_utf8(self.memory.get(msg_ptr, msg_len as usize)?)
-			.map_err(|_| UserTrap::BadUtf8)?;
+		let payload_len = context.value_stack.pop_as::<i32>()? as u32;
+		let payload_ptr = context.value_stack.pop_as::<i32>()? as u32;

+		let raw_payload = self.memory.get(payload_ptr, payload_len as usize)?;
+		let payload = panic_payload::decode(&raw_payload);
+		let msg = format!(
+			"{msg}, {file}:{line}:{col}",
+			msg = payload
+				.msg
+				.as_ref()
+				.map(String::as_ref)
+				.unwrap_or("<msg was stripped>"),
+			file = payload
+				.file
+				.as_ref()
+				.map(String::as_ref)
+				.unwrap_or("<unknown>"),
+			line = payload.line.unwrap_or(0),
+			col = payload.col.unwrap_or(0)
+		);
 		trace!(target: "wasm", "Contract custom panic message: {}", msg);

 		Err(UserTrap::Panic(msg).into())
@@ -650,7 +665,7 @@ impl<'a, 'b> Runtime<'a, 'b> {

 		self.memory.set(return_ptr, &*hash)?;

-		Ok(Some(0i32.into()))
+		Ok(None)
 	}

 	fn return_address_ptr(&mut self, ptr: u32, val: Address) -> Result<(), InterpreterError>
--- a/ethcore/wasm/src/tests.rs
+++ b/ethcore/wasm/src/tests.rs
@@ -112,7 +112,7 @@ fn logger() {
 		U256::from(1_000_000_000),
 		"Logger sets 0x04 key to the trasferred value"
 	);
-	assert_eq!(gas_left, U256::from(19_143));
+	assert_eq!(gas_left, U256::from(19_147));
 }

 // This test checks if the contract can allocate memory and pass pointer to the result stream properly.
@@ -180,7 +180,7 @@ fn dispersion() {
 		result,
 		vec![0u8, 0, 125, 11, 197, 7, 255, 8, 19, 0]
 	);
-	assert_eq!(gas_left, U256::from(99_469));
+	assert_eq!(gas_left, U256::from(96_393));
 }

 #[test]
@@ -208,7 +208,7 @@ fn suicide_not() {
 		result,
 		vec![0u8]
 	);
-	assert_eq!(gas_left, U256::from(99_724));
+	assert_eq!(gas_left, U256::from(96_725));
 }

 #[test]
@@ -240,7 +240,7 @@ fn suicide() {
 	};

 	assert!(ext.suicides.contains(&refund));
-	assert_eq!(gas_left, U256::from(99_663));
+	assert_eq!(gas_left, U256::from(96_687));
 }

 #[test]
@@ -270,7 +270,7 @@ fn create() {
 	assert!(ext.calls.contains(
 		&FakeCall {
 			call_type: FakeCallType::Create,
-			gas: U256::from(65_903),
+			gas: U256::from(65_899),
 			sender_address: None,
 			receive_address: None,
 			value: Some(1_000_000_000.into()),
@@ -278,7 +278,7 @@ fn create() {
 			code_address: None,
 		}
 	));
-	assert_eq!(gas_left, U256::from(65_896));
+	assert_eq!(gas_left, U256::from(65_892));
 }


@@ -312,7 +312,7 @@ fn call_code() {
 	assert!(ext.calls.contains(
 		&FakeCall {
 			call_type: FakeCallType::Call,
-			gas: U256::from(98_709),
+			gas: U256::from(98_713),
 			sender_address: Some(sender),
 			receive_address: Some(receiver),
 			value: None,
@@ -324,7 +324,7 @@ fn call_code() {
 	// siphash result
 	let res = LittleEndian::read_u32(&result[..]);
 	assert_eq!(res, 4198595614);
-	assert_eq!(gas_left, U256::from(93_851));
+	assert_eq!(gas_left, U256::from(93_855));
 }

 #[test]
@@ -357,7 +357,7 @@ fn call_static() {
 	assert!(ext.calls.contains(
 		&FakeCall {
 			call_type: FakeCallType::Call,
-			gas: U256::from(98_709),
+			gas: U256::from(98_713),
 			sender_address: Some(sender),
 			receive_address: Some(receiver),
 			value: None,
@@ -370,7 +370,7 @@ fn call_static() {
 	let res = LittleEndian::read_u32(&result[..]);
 	assert_eq!(res, 317632590);

-	assert_eq!(gas_left, U256::from(93_851));
+	assert_eq!(gas_left, U256::from(93_855));
 }

 // Realloc test
@@ -393,7 +393,7 @@ fn realloc() {
 		}
 	};
 	assert_eq!(result, vec![0u8; 2]);
-	assert_eq!(gas_left, U256::from(99_787));
+	assert_eq!(gas_left, U256::from(96_723));
 }

 // Tests that contract's ability to read from a storage
@@ -419,7 +419,7 @@ fn storage_read() {
 	};

 	assert_eq!(Address::from(&result[12..32]), address);
-	assert_eq!(gas_left, U256::from(99_702));
+	assert_eq!(gas_left, U256::from(99_767));
 }

 // Tests keccak calculation
@@ -445,7 +445,7 @@ fn keccak() {
 	};

 	assert_eq!(H256::from_slice(&result), H256::from("68371d7e884c168ae2022c82bd837d51837718a7f7dfb7aa3f753074a35e1d87"));
-	assert_eq!(gas_left, U256::from(84_520));
+	assert_eq!(gas_left, U256::from(81_446));
 }

 // memcpy test.
@@ -477,7 +477,7 @@ fn memcpy() {
 	};

 	assert_eq!(result, test_payload);
-	assert_eq!(gas_left, U256::from(75_324));
+	assert_eq!(gas_left, U256::from(72_216));
 }

 // memmove test.
@@ -509,7 +509,7 @@ fn memmove() {
 	};

 	assert_eq!(result, test_payload);
-	assert_eq!(gas_left, U256::from(75_324));
+	assert_eq!(gas_left, U256::from(72_216));
 }

 // memset test
@@ -534,7 +534,7 @@ fn memset() {
 	};

 	assert_eq!(result, vec![228u8; 8192]);
-	assert_eq!(gas_left, U256::from(75_324));
+	assert_eq!(gas_left, U256::from(72_196));
 }

 macro_rules! reqrep_test {
@@ -591,7 +591,7 @@ fn math_add() {
 		U256::from_dec_str("1888888888888888888888888888887").unwrap(),
 		(&result[..]).into()
 	);
-	assert_eq!(gas_left, U256::from(98_576));
+	assert_eq!(gas_left, U256::from(95_524));
 }

 // multiplication
@@ -613,7 +613,7 @@ fn math_mul() {
 		U256::from_dec_str("888888888888888888888888888887111111111111111111111111111112").unwrap(),
 		(&result[..]).into()
 	);
-	assert_eq!(gas_left, U256::from(97_726));
+	assert_eq!(gas_left, U256::from(94_674));
 }

 // subtraction
@@ -635,7 +635,7 @@ fn math_sub() {
 		U256::from_dec_str("111111111111111111111111111111").unwrap(),
 		(&result[..]).into()
 	);
-	assert_eq!(gas_left, U256::from(98_568));
+	assert_eq!(gas_left, U256::from(95_516));
 }

 // subtraction with overflow
@@ -677,7 +677,7 @@ fn math_div() {
 		U256::from_dec_str("1125000").unwrap(),
 		(&result[..]).into()
 	);
-	assert_eq!(gas_left, U256::from(91_564));
+	assert_eq!(gas_left, U256::from(88_514));
 }

 // This test checks the ability of wasm contract to invoke
@@ -765,7 +765,7 @@ fn externs() {
 		"Gas limit requested and returned does not match"
 	);

-	assert_eq!(gas_left, U256::from(97_740));
+	assert_eq!(gas_left, U256::from(94_858));
 }

 #[test]
@@ -791,7 +791,7 @@ fn embedded_keccak() {
 	};

 	assert_eq!(H256::from_slice(&result), H256::from("68371d7e884c168ae2022c82bd837d51837718a7f7dfb7aa3f753074a35e1d87"));
-	assert_eq!(gas_left, U256::from(84_520));
+	assert_eq!(gas_left, U256::from(81_446));
 }

 /// This test checks the correctness of log extern
@@ -826,5 +826,5 @@ fn events() {
 	assert_eq!(&log_entry.data, b"gnihtemos");

 	assert_eq!(&result, b"gnihtemos");
-	assert_eq!(gas_left, U256::from(82_721));
+	assert_eq!(gas_left, U256::from(79_637));
 }
--- a/json/src/spec/authority_round.rs
+++ b/json/src/spec/authority_round.rs
@@ -22,7 +22,7 @@ use super::ValidatorSet;
 /// Authority params deserialization.
 #[derive(Debug, PartialEq, Deserialize)]
 pub struct AuthorityRoundParams {
-	/// Block duration.
+	/// Block duration, in seconds.
 	#[serde(rename="stepDuration")]
 	pub step_duration: Uint,
 	/// Valid authorities
@@ -43,6 +43,12 @@ pub struct AuthorityRoundParams {
 	/// Reward per block in wei.
 	#[serde(rename="blockReward")]
 	pub block_reward: Option<Uint>,
+	/// Block at which maximum uncle count should be considered.
+	#[serde(rename="maximumUncleCountTransition")]
+	pub maximum_uncle_count_transition: Option<Uint>,
+	/// Maximum number of accepted uncles.
+	#[serde(rename="maximumUncleCount")]
+	pub maximum_uncle_count: Option<Uint>,
 }

 /// Authority engine deserialization.
@@ -71,7 +77,9 @@ mod tests {
 				},
 				"startStep" : 24,
 				"validateStepTransition": 150,
-				"blockReward": 5000000
+				"blockReward": 5000000,
+				"maximumUncleCountTransition": 10000000,
+				"maximumUncleCount": 5
 			}
 		}"#;

@@ -80,6 +88,8 @@ mod tests {
 		assert_eq!(deserialized.params.validators, ValidatorSet::List(vec![Address(H160::from("0xc6d9d2cd449a754c494264e1809c50e34d64562b"))]));
 		assert_eq!(deserialized.params.start_step, Some(Uint(U256::from(24))));
 		assert_eq!(deserialized.params.immediate_transitions, None);
+		assert_eq!(deserialized.params.maximum_uncle_count_transition, Some(Uint(10_000_000.into())));
+		assert_eq!(deserialized.params.maximum_uncle_count, Some(Uint(5.into())));

 	}
 }
--- a/json/src/spec/ethash.rs
+++ b/json/src/spec/ethash.rs
@@ -125,6 +125,14 @@ pub struct EthashParams {
 	/// EIP-649 base reward.
 	#[serde(rename="eip649Reward")]
 	pub eip649_reward: Option<Uint>,
+
+	/// EXPIP-2 block height
+	#[serde(rename="expip2Transition")]
+	pub expip2_transition: Option<Uint>,
+
+	/// EXPIP-2 duration limit
+	#[serde(rename="expip2DurationLimit")]
+	pub expip2_duration_limit: Option<Uint>,
 }

 /// Ethash engine deserialization.
@@ -241,6 +249,8 @@ mod tests {
 				eip649_transition: None,
 				eip649_delay: None,
 				eip649_reward: None,
+				expip2_transition: None,
+				expip2_duration_limit: None,
 			}
 		});
 	}
@@ -287,6 +297,8 @@ mod tests {
 				eip649_transition: None,
 				eip649_delay: None,
 				eip649_reward: None,
+				expip2_transition: None,
+				expip2_duration_limit: None,
 			}
 		});
 	}
--- a/local-store/Cargo.toml
+++ b/local-store/Cargo.toml
@@ -14,4 +14,7 @@ serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"
 log = "0.3"
+
+[dev-dependencies]
 ethkey = { path = "../ethkey" }
+kvdb-memorydb = { path = "../util/kvdb-memorydb" }
--- a/local-store/src/lib.rs
+++ b/local-store/src/lib.rs
@@ -44,6 +44,8 @@ extern crate log;

 #[cfg(test)]
 extern crate ethkey;
+#[cfg(test)]
+extern crate kvdb_memorydb;

 const LOCAL_TRANSACTIONS_KEY: &'static [u8] = &*b"LOCAL_TXS";

@@ -243,7 +245,7 @@ mod tests {

 	#[test]
 	fn twice_empty() {
-		let db = Arc::new(::kvdb::in_memory(0));
+		let db = Arc::new(::kvdb_memorydb::create(0));

 		{
 			let store = super::create(db.clone(), None, Dummy(vec![]));
@@ -272,7 +274,7 @@ mod tests {
 			PendingTransaction::new(signed, condition)
 		}).collect();

-		let db = Arc::new(::kvdb::in_memory(0));
+		let db = Arc::new(::kvdb_memorydb::create(0));

 		{
 			// nothing written yet, will write pending.
@@ -311,7 +313,7 @@ mod tests {
 			PendingTransaction::new(signed, None)
 		});

-		let db = Arc::new(::kvdb::in_memory(0));
+		let db = Arc::new(::kvdb_memorydb::create(0));
 		{
 			// nothing written, will write bad.
 			let store = super::create(db.clone(), None, Dummy(transactions.clone()));
--- a/Ethereum.xcodeproj/project.pbxproj
+++ b/Ethereum.xcodeproj/project.pbxproj
@@ -13,6 +13,8 @@
 		0ACF9AC71E30FAB600D5C935 /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = 0ACF9AC51E30FAB600D5C935 /* MainMenu.xib */; };
 		0AE564F11E3CE42C00BD01F7 /* GetBSDProcessList.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0AE564F01E3CE42C00BD01F7 /* GetBSDProcessList.swift */; };
 		0AED4DA01E3E22F800BF87C0 /* ethstore in CopyFiles */ = {isa = PBXBuildFile; fileRef = 0AED4D9F1E3E22F800BF87C0 /* ethstore */; settings = {ATTRIBUTES = (CodeSignOnCopy, ); }; };
+		84CF92B3200E559900AD6E78 /* parity-evm in CopyFiles */ = {isa = PBXBuildFile; fileRef = 84CF92B2200E559900AD6E78 /* parity-evm */; settings = {ATTRIBUTES = (CodeSignOnCopy, ); }; };
+		84CF92B6200E56AE00AD6E78 /* ethkey in CopyFiles */ = {isa = PBXBuildFile; fileRef = 84CF92B5200E56AE00AD6E78 /* ethkey */; settings = {ATTRIBUTES = (CodeSignOnCopy, ); }; };
 /* End PBXBuildFile section */

 /* Begin PBXCopyFilesBuildPhase section */
@@ -22,6 +24,8 @@
 			dstPath = "";
 			dstSubfolderSpec = 6;
 			files = (
+				84CF92B6200E56AE00AD6E78 /* ethkey in CopyFiles */,
+				84CF92B3200E559900AD6E78 /* parity-evm in CopyFiles */,
 				0AED4DA01E3E22F800BF87C0 /* ethstore in CopyFiles */,
 				0A7A475D1E3D2CDD0093D1AB /* parity in CopyFiles */,
 			);
@@ -38,6 +42,8 @@
 		0ACF9AC81E30FAB600D5C935 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		0AE564F01E3CE42C00BD01F7 /* GetBSDProcessList.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = GetBSDProcessList.swift; sourceTree = "<group>"; };
 		0AED4D9F1E3E22F800BF87C0 /* ethstore */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.executable"; name = ethstore; path = ../target/release/ethstore; sourceTree = "<group>"; };
+		84CF92B2200E559900AD6E78 /* parity-evm */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.executable"; name = "parity-evm"; path = "../target/release/parity-evm"; sourceTree = "<group>"; };
+		84CF92B5200E56AE00AD6E78 /* ethkey */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.executable"; name = ethkey; path = ../target/release/ethkey; sourceTree = "<group>"; };
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
@@ -54,6 +60,8 @@
 		0ACF9AB51E30FAB600D5C935 = {
 			isa = PBXGroup;
 			children = (
+				84CF92B5200E56AE00AD6E78 /* ethkey */,
+				84CF92B2200E559900AD6E78 /* parity-evm */,
 				0AED4D9F1E3E22F800BF87C0 /* ethstore */,
 				0A7A475C1E3D2CDD0093D1AB /* parity */,
 				0ACF9AC01E30FAB600D5C935 /* Parity Ethereum */,
@@ -110,7 +118,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0800;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0820;
 				ORGANIZATIONNAME = "Parity Technologies";
 				TargetAttributes = {
 					0ACF9ABD1E30FAB600D5C935 = {
@@ -192,6 +200,7 @@
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_SUSPICIOUS_MOVES = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -241,6 +250,7 @@
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_SUSPICIOUS_MOVES = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
--- a/mac/Parity.pkgproj
+++ b/mac/Parity.pkgproj
@@ -462,7 +462,7 @@
 				<key>OVERWRITE_PERMISSIONS</key>
 				<false/>
 				<key>VERSION</key>
-				<string>1.8.3</string>
+				<string>1.8.7</string>
 			</dict>
 			<key>UUID</key>
 			<string>2DCD5B81-7BAF-4DA1-9251-6274B089FD36</string>
--- a/mac/Parity/AppDelegate.swift
+++ b/mac/Parity/AppDelegate.swift
@@ -1,4 +1,4 @@
-// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// Copyright 2015-2018 Parity Technologies (UK) Ltd.
 // This file is part of Parity.

 // Parity is free software: you can redistribute it and/or modify
@@ -22,12 +22,12 @@ import Cocoa
 class AppDelegate: NSObject, NSApplicationDelegate {
 	@IBOutlet weak var statusMenu: NSMenu!
 	@IBOutlet weak var startAtLogonMenuItem: NSMenuItem!
-	
+
 	let statusItem = NSStatusBar.system().statusItem(withLength: NSVariableStatusItemLength)
 	var parityPid: Int32? = nil
 	var commandLine: [String] = []
 	let defaultDefaults = "{\"fat_db\":false,\"mode\":\"passive\",\"mode.alarm\":3600,\"mode.timeout\":300,\"pruning\":\"fast\",\"tracing\":false}"
-	
+
 	func menuAppPath() -> String {
 		return Bundle.main.executablePath!
 	}
@@ -40,20 +40,20 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 		return NSRunningApplication.runningApplications(withBundleIdentifier: Bundle.main.bundleIdentifier!).count > 1

 	}
-	
+
 	func isParityRunning() -> Bool {
 		if let pid = self.parityPid {
 			return kill(pid, 0) == 0
 		}
 		return false
 	}
-	
+
 	func killParity() {
 		if let pid = self.parityPid {
 			kill(pid, SIGKILL)
 		}
 	}
-	
+
 	func openUI() {
 		let parity = Process()
 		parity.launchPath = self.parityPath()
@@ -61,29 +61,29 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 		parity.arguments!.append("ui")
 		parity.launch()
 	}
-	
+
 	func writeConfigFiles() {
 		let basePath = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask).first?
 			.appendingPathComponent(Bundle.main.bundleIdentifier!, isDirectory: true)
-		
+
 		if FileManager.default.fileExists(atPath: basePath!.path) {
 			return
 		}
-		
+
 		do {
 			let defaultsFileDir = basePath?.appendingPathComponent("chains").appendingPathComponent("ethereum")
 			let defaultsFile = defaultsFileDir?.appendingPathComponent("user_defaults")
-			
+
 			try FileManager.default.createDirectory(atPath: (defaultsFileDir?.path)!, withIntermediateDirectories: true, attributes: nil)
 			if !FileManager.default.fileExists(atPath: defaultsFile!.path) {
 				try defaultDefaults.write(to: defaultsFile!, atomically: false, encoding: String.Encoding.utf8)
 			}
-		
+
 			let configFile = basePath?.appendingPathComponent("config.toml")
 		}
 		catch {}
 	}
-	
+
 	func autostartEnabled() -> Bool {
 		return itemReferencesInLoginItems().existingReference != nil
 	}
@@ -123,7 +123,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 		}
 		return (nil, nil)
 	}
-	
+
 	func toggleLaunchAtStartup() {
 		let itemReferences = itemReferencesInLoginItems()
 		let shouldBeToggled = (itemReferences.existingReference == nil)
@@ -155,7 +155,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {

 	func launchParity() {
 		self.commandLine = CommandLine.arguments.dropFirst().filter({ $0 != "ui"})
-		
+
 		let processes = GetBSDProcessList()!
 		let parityProcess = processes.index(where: {
 			var name = $0.kp_proc.p_comm
@@ -166,7 +166,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 			}
 			return str == "parity"
 		})
-		
+
 		if parityProcess == nil {
 			let parity = Process()
 			let p = self.parityPath()
@@ -178,7 +178,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 			self.parityPid = processes[parityProcess!].kp_proc.p_pid
 		}
 	}
-	
+
 	func applicationDidFinishLaunching(_ aNotification: Notification) {
 		if self.isAlreadyRunning() {
 			openUI()
@@ -188,12 +188,12 @@ class AppDelegate: NSObject, NSApplicationDelegate {

 		self.writeConfigFiles()
 		self.launchParity()
-		Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true, block: {_ in 
+		Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true, block: {_ in
 			if !self.isParityRunning() {
 				NSApplication.shared().terminate(self)
 			}
 		})
-		
+
 		let icon = NSImage(named: "statusIcon")
 		icon?.isTemplate = true // best for dark mode
 		statusItem.image = icon
@@ -206,19 +206,18 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 		}
 		return true
 	}
-	
+
 	@IBAction func quitClicked(_ sender: NSMenuItem) {
 		self.killParity()
 		NSApplication.shared().terminate(self)
 	}
-	
+
 	@IBAction func openClicked(_ sender: NSMenuItem) {
 		self.openUI()
 	}
-	
+
 	@IBAction func startAtLogonClicked(_ sender: NSMenuItem) {
 		self.toggleLaunchAtStartup()
 	}

 }
-
--- a/mac/Parity/Assets.xcassets/AppIcon.appiconset/Parity.png
+++ b/mac/Parity/Assets.xcassets/AppIcon.appiconset/Parity.png
--- a/mac/Parity/Assets.xcassets/statusIcon.imageset/Parity-1.png
+++ b/mac/Parity/Assets.xcassets/statusIcon.imageset/Parity-1.png
--- a/mac/Parity/Assets.xcassets/statusIcon.imageset/Parity-2.png
+++ b/mac/Parity/Assets.xcassets/statusIcon.imageset/Parity-2.png
--- a/mac/Parity/Assets.xcassets/statusIcon.imageset/Parity.png
+++ b/mac/Parity/Assets.xcassets/statusIcon.imageset/Parity.png
--- a/mac/Parity/GetBSDProcessList.swift
+++ b/mac/Parity/GetBSDProcessList.swift
@@ -1,4 +1,4 @@
-// Copyright 2015-2017 Parity Technologies (UK) Ltd.
+// Copyright 2015-2018 Parity Technologies (UK) Ltd.
 // This file is part of Parity.

 // Parity is free software: you can redistribute it and/or modify
@@ -21,21 +21,21 @@ import Foundation
 import Darwin

 public func GetBSDProcessList() -> ([kinfo_proc]?)  {
-	
+
 	var done = false
 	var result: [kinfo_proc]?
 	var err: Int32
-	
+
 	repeat {
 		let name = [CTL_KERN, KERN_PROC, KERN_PROC_ALL, 0];
 		let namePointer = name.withUnsafeBufferPointer { UnsafeMutablePointer<Int32>(mutating: $0.baseAddress) }
 		var length: Int = 0
-		
+
 		err = sysctl(namePointer, u_int(name.count), nil, &length, nil, 0)
 		if err == -1 {
 			err = errno
 		}
-		
+
 		if err == 0 {
 			let count = length / MemoryLayout<kinfo_proc>.stride
 			result = [kinfo_proc](repeating: kinfo_proc(), count: count)
@@ -54,6 +54,6 @@ public func GetBSDProcessList() -> ([kinfo_proc]?)  {
 			}
 		}
 	} while err == 0 && !done
-	
+
 	return result
 }
--- a/mac/Parity/Info.plist
+++ b/mac/Parity/Info.plist
@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.8</string>
+	<string>1.9</string>
 	<key>CFBundleVersion</key>
 	<string>1</string>
 	<key>LSApplicationCategoryType</key>
--- a/mac/install-readme.txt
+++ b/mac/install-readme.txt
@@ -3,8 +3,6 @@ Parity Wallet

 Welcome to Parity Wallet, your all-in-one Ethereum node and wallet.

-WARNING: This installer is **EXPERIMENTAL**. Use it at your own risk.
-
-If you continue, Parity will be installed as a user service. You will be able to use the Parity Wallet through your browser by using the menu bar icon, following the shortcut in the Launchpad or navigating to http://localhost:8080/ in your browser.
+If you continue, Parity will be installed as a user service. You will be able to use the Parity Wallet through your browser by using the menu bar icon, following the shortcut in the Launchpad or navigating to http://localhost:8180/ in your browser.

 Parity is distributed under the terms of the GPL.
--- a/mac/uninstall-parity.sh
+++ b/mac/uninstall-parity.sh
@@ -9,5 +9,4 @@ fi
 PLIST=~/Library/LaunchAgents/io.parity.ethereum.plist
 su $SUDO_USER -c "launchctl stop io.parity.ethereum"
 su $SUDO_USER -c "launchctl unload $PLIST"
-rm -f /usr/local/libexec/parity /usr/local/libexec/uninstall-parity.sh /usr/local/bin/ethstore $PLIST
-
+rm -f /usr/local/libexec/parity /usr/local/libexec/uninstall-parity.sh /usr/local/bin/ethstore /usr/local/bin/ethkey /usr/local/bin/parity-evm $PLIST
--- a/nsis/installer.nsi
+++ b/nsis/installer.nsi
@@ -6,17 +6,17 @@
 !define SYNC_TERM 0x00100001

 !define APPNAME "Parity"
-!define COMPANYNAME "Parity"
+!define COMPANYNAME "Parity Technologies"
 !define DESCRIPTION "Fast, light, robust Ethereum implementation"
 !define VERSIONMAJOR 1
 !define VERSIONMINOR 8
-!define VERSIONBUILD 3
+!define VERSIONBUILD 7
 !define ARGS ""
 !define FIRST_START_ARGS "--mode=passive ui"

 !addplugindir .\

-!define HELPURL "https://github.com/paritytech/parity/wiki" # "Support Information" link
+!define HELPURL "https://paritytech.github.io/wiki/" # "Support Information" link
 !define UPDATEURL "https://github.com/paritytech/parity/releases" # "Product Updates" link
 !define ABOUTURL "https://github.com/paritytech/parity" # "Publisher" link
 !define INSTALLSIZE 26120
@@ -88,14 +88,13 @@ section "install"
 	!insertmacro TerminateApp

 	# Files added here should be removed by the uninstaller (see section "uninstall")
-	file /oname=parity.exe ..\target\release\parity.exe
+	file /oname=parity.exe ..\target\x86_64-pc-windows-msvc\release\parity.exe
+  file /oname=parity-evm.exe ..\target\x86_64-pc-windows-msvc\release\parity-evm.exe
+  file /oname=ethstore.exe ..\target\x86_64-pc-windows-msvc\release\ethstore.exe
+  file /oname=ethkey.exe ..\target\x86_64-pc-windows-msvc\release\ethkey.exe
 	file /oname=ptray.exe ..\windows\ptray\x64\Release\ptray.exe

 	file "logo.ico"
-	file vc_redist.x64.exe
-
-	ExecWait '"$INSTDIR\vc_redist.x64.exe"  /passive /norestart'
-	delete $INSTDIR\vc_redist.x64.exe
 	# Add any other files for the install directory (license files, app data, etc) here

 	# Uninstaller - See function un.onInit and section "uninstall" for configuration
@@ -167,6 +166,9 @@ section "uninstall"

 	# Remove files
 	delete $INSTDIR\parity.exe
+  delete $INSTDIR\parity-evm.exe
+  delete $INSTDIR\ethstore.exe
+  delete $INSTDIR\ethkey.exe
 	delete $INSTDIR\ptray.exe
 	delete $INSTDIR\logo.ico

@@ -187,4 +189,3 @@ section "uninstall"
 	DeleteRegValue HKLM "Software\Microsoft\Windows\CurrentVersion\Run" "${APPNAME}"
 	DeleteRegValue HKCU "Software\Microsoft\Windows\CurrentVersion\Run" "${APPNAME}"
 sectionEnd
-
--- a/nsis/logo.ico
+++ b/nsis/logo.ico
--- a/parity/blockchain.rs
+++ b/parity/blockchain.rs
@@ -591,8 +591,12 @@ fn execute_export(cmd: ExportBlockchain) -> Result<(), String> {
 		}
 		let b = client.block(BlockId::Number(i)).ok_or("Error exporting incomplete chain")?.into_inner();
 		match format {
-			DataFormat::Binary => { out.write(&b).expect("Couldn't write to stream."); }
-			DataFormat::Hex => { out.write_fmt(format_args!("{}", b.pretty())).expect("Couldn't write to stream."); }
+			DataFormat::Binary => {
+				out.write(&b).map_err(|e| format!("Couldn't write to stream. Cause: {}", e))?;
+			}
+			DataFormat::Hex => {
+				out.write_fmt(format_args!("{}", b.pretty())).map_err(|e| format!("Couldn't write to stream. Cause: {}", e))?;
+			}
 		}
 	}

--- a/parity/cache.rs
+++ b/parity/cache.rs
@@ -17,8 +17,10 @@
 use std::cmp::max;

 const MIN_BC_CACHE_MB: u32 = 4;
-const MIN_DB_CACHE_MB: u32 = 2;
+const MIN_DB_CACHE_MB: u32 = 8;
 const MIN_BLOCK_QUEUE_SIZE_LIMIT_MB: u32 = 16;
+const DEFAULT_DB_CACHE_SIZE: u32 = 128;
+const DEFAULT_BC_CACHE_SIZE: u32 = 8;
 const DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB: u32 = 40;
 const DEFAULT_TRACE_CACHE_SIZE: u32 = 20;
 const DEFAULT_STATE_CACHE_SIZE: u32 = 25;
@@ -41,7 +43,11 @@ pub struct CacheConfig {

 impl Default for CacheConfig {
 	fn default() -> Self {
-		CacheConfig::new(32, 8, DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB, DEFAULT_STATE_CACHE_SIZE)
+		CacheConfig::new(
+			DEFAULT_DB_CACHE_SIZE,
+			DEFAULT_BC_CACHE_SIZE,
+			DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB,
+			DEFAULT_STATE_CACHE_SIZE)
 	}
 }

@@ -68,14 +74,9 @@ impl CacheConfig {
 		}
 	}

-	/// Size of db cache for blockchain.
-	pub fn db_blockchain_cache_size(&self) -> u32 {
-		max(MIN_DB_CACHE_MB, self.db / 4)
-	}
-
-	/// Size of db cache for state.
-	pub fn db_state_cache_size(&self) -> u32 {
-		max(MIN_DB_CACHE_MB, self.db * 3 / 4)
+	/// Size of db cache.
+	pub fn db_cache_size(&self) -> u32 {
+		max(MIN_DB_CACHE_MB, self.db)
 	}

 	/// Size of block queue size limit
@@ -122,13 +123,16 @@ mod tests {
 	fn test_cache_config_db_cache_sizes() {
 		let config = CacheConfig::new_with_total_cache_size(400);
 		assert_eq!(config.db, 280);
-		assert_eq!(config.db_blockchain_cache_size(), 70);
-		assert_eq!(config.db_state_cache_size(), 210);
+		assert_eq!(config.db_cache_size(), 280);
 	}

 	#[test]
 	fn test_cache_config_default() {
 		assert_eq!(CacheConfig::default(),
-			CacheConfig::new(32, 8, super::DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB, super::DEFAULT_STATE_CACHE_SIZE));
+				   CacheConfig::new(
+					   super::DEFAULT_DB_CACHE_SIZE,
+					   super::DEFAULT_BC_CACHE_SIZE,
+					   super::DEFAULT_BLOCK_QUEUE_SIZE_LIMIT_MB,
+					   super::DEFAULT_STATE_CACHE_SIZE));
 	}
 }
--- a/parity/cli/mod.rs
+++ b/parity/cli/mod.rs
@@ -342,6 +342,7 @@ usage! {
 			ARG arg_password: (Vec<String>) = Vec::new(), or |c: &Config| otry!(c.account).password.clone(),
 			"--password=[FILE]...",
 			"Provide a file containing a password for unlocking an account. Leading and trailing whitespace is trimmed.",
+
 		["UI options"]
 			FLAG flag_force_ui: (bool) = false, or |c: &Config| otry!(c.ui).force.clone(),
 			"--force-ui",
@@ -458,7 +459,7 @@ usage! {
 			"--jsonrpc-hosts=[HOSTS]",
 			"List of allowed Host header values. This option will validate the Host header sent by the browser, it is additional security against some attack vectors. Special options: \"all\", \"none\",.",

-			ARG arg_jsonrpc_threads: (usize) = 0usize, or |c: &Config| otry!(c.rpc).processing_threads,
+			ARG arg_jsonrpc_threads: (usize) = 4usize, or |c: &Config| otry!(c.rpc).processing_threads,
 			"--jsonrpc-threads=[THREADS]",
 			"Turn on additional processing threads in all RPC servers. Setting this to non-zero value allows parallel cpu-heavy queries execution.",

@@ -684,6 +685,10 @@ usage! {
 			"--min-gas-price=[STRING]",
 			"Minimum amount of Wei per GAS to be paid for a transaction to be accepted for mining. Overrides --basic-tx-usd.",

+			ARG arg_gas_price_percentile: (usize) = 50usize, or |c: &Config| otry!(c.mining).gas_price_percentile,
+			"--gas-price-percentile=[PCT]",
+			"Set PCT percentile gas price value from last 100 blocks as default gas price when sending transactions.",
+
 			ARG arg_author: (Option<String>) = None, or |c: &Config| otry!(c.mining).author.clone(),
 			"--author=[ADDRESS]",
 			"Specify the block author (aka \"coinbase\") address for sending block rewards from sealed blocks. NOTE: MINING WILL NOT WORK WITHOUT THIS OPTION.", // Sealing/Mining Option
@@ -767,7 +772,7 @@ usage! {
 			"--pruning-memory=[MB]",
 			"The ideal amount of memory in megabytes to use to store recent states. As many states as possible will be kept within this limit, and at least --pruning-history states will always be kept.",

-			ARG arg_cache_size_db: (u32) = 32u32, or |c: &Config| otry!(c.footprint).cache_size_db.clone(),
+			ARG arg_cache_size_db: (u32) = 128u32, or |c: &Config| otry!(c.footprint).cache_size_db.clone(),
 			"--cache-size-db=[MB]",
 			"Override database cache size.",

@@ -982,6 +987,7 @@ struct Config {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Operating {
 	mode: Option<String>,
 	mode_timeout: Option<u64>,
@@ -1001,6 +1007,7 @@ struct Operating {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Account {
 	unlock: Option<Vec<String>>,
 	password: Option<Vec<String>>,
@@ -1010,6 +1017,7 @@ struct Account {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Ui {
 	force: Option<bool>,
 	disable: Option<bool>,
@@ -1020,6 +1028,7 @@ struct Ui {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Network {
 	warp: Option<bool>,
 	port: Option<u16>,
@@ -1039,6 +1048,7 @@ struct Network {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Rpc {
 	disable: Option<bool>,
 	port: Option<u16>,
@@ -1051,6 +1061,7 @@ struct Rpc {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Ws {
 	disable: Option<bool>,
 	port: Option<u16>,
@@ -1061,6 +1072,7 @@ struct Ws {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Ipc {
 	disable: Option<bool>,
 	path: Option<String>,
@@ -1068,6 +1080,7 @@ struct Ipc {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Dapps {
 	disable: Option<bool>,
 	port: Option<u16>,
@@ -1080,6 +1093,7 @@ struct Dapps {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct SecretStore {
 	disable: Option<bool>,
 	disable_http: Option<bool>,
@@ -1095,6 +1109,7 @@ struct SecretStore {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Ipfs {
 	enable: Option<bool>,
 	port: Option<u16>,
@@ -1104,6 +1119,7 @@ struct Ipfs {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Mining {
 	author: Option<String>,
 	engine_signer: Option<String>,
@@ -1117,6 +1133,7 @@ struct Mining {
 	tx_time_limit: Option<u64>,
 	relay_set: Option<String>,
 	min_gas_price: Option<u64>,
+	gas_price_percentile: Option<usize>,
 	usd_per_tx: Option<String>,
 	usd_per_eth: Option<String>,
 	price_update_period: Option<String>,
@@ -1135,6 +1152,7 @@ struct Mining {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Stratum {
 	interface: Option<String>,
 	port: Option<u16>,
@@ -1142,6 +1160,7 @@ struct Stratum {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Footprint {
 	tracing: Option<String>,
 	pruning: Option<String>,
@@ -1160,16 +1179,19 @@ struct Footprint {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Snapshots {
 	disable_periodic: Option<bool>,
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct VM {
 	jit: Option<bool>,
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Misc {
 	ntp_servers: Option<Vec<String>>,
 	logging: Option<String>,
@@ -1180,6 +1202,7 @@ struct Misc {
 }

 #[derive(Default, Debug, PartialEq, Deserialize)]
+#[serde(deny_unknown_fields)]
 struct Whisper {
 	enabled: Option<bool>,
 	pool_size: Option<usize>,
@@ -1461,7 +1484,7 @@ mod tests {
 			arg_jsonrpc_apis: "web3,eth,net,parity,traces,rpc,secretstore".into(),
 			arg_jsonrpc_hosts: "none".into(),
 			arg_jsonrpc_server_threads: None,
-			arg_jsonrpc_threads: 0,
+			arg_jsonrpc_threads: 4,

 			// WS
 			flag_no_ws: false,
@@ -1512,6 +1535,7 @@ mod tests {
 			arg_tx_time_limit: Some(100u64),
 			arg_relay_set: "cheap".into(),
 			arg_min_gas_price: Some(0u64),
+			arg_gas_price_percentile: 50usize,
 			arg_usd_per_tx: "0.0025".into(),
 			arg_usd_per_eth: "auto".into(),
 			arg_price_update_period: "hourly".into(),
@@ -1624,11 +1648,17 @@ mod tests {
 		let config1 = Args::parse_config(include_str!("./tests/config.invalid1.toml"));
 		let config2 = Args::parse_config(include_str!("./tests/config.invalid2.toml"));
 		let config3 = Args::parse_config(include_str!("./tests/config.invalid3.toml"));
+		let config4 = Args::parse_config(include_str!("./tests/config.invalid4.toml"));

-		match (config1, config2, config3) {
-			(Err(ArgsError::Decode(_)), Err(ArgsError::Decode(_)), Err(ArgsError::Decode(_))) => {},
-			(a, b, c) => {
-				assert!(false, "Got invalid error types: {:?}, {:?}, {:?}", a, b, c);
+		match (config1, config2, config3, config4) {
+			(
+				Err(ArgsError::Decode(_)),
+				Err(ArgsError::Decode(_)),
+				Err(ArgsError::Decode(_)),
+				Err(ArgsError::Decode(_)),
+			) => {},
+			(a, b, c, d) => {
+				assert!(false, "Got invalid error types: {:?}, {:?}, {:?}, {:?}", a, b, c, d);
 			}
 		}
 	}
@@ -1751,6 +1781,7 @@ mod tests {
 				work_queue_size: None,
 				relay_set: None,
 				min_gas_price: None,
+				gas_price_percentile: None,
 				usd_per_tx: None,
 				usd_per_eth: None,
 				price_update_period: Some("hourly".into()),
@@ -1776,7 +1807,7 @@ mod tests {
 				pruning_memory: None,
 				fast_and_loose: None,
 				cache_size: None,
-				cache_size_db: Some(128),
+				cache_size_db: Some(256),
 				cache_size_blocks: Some(16),
 				cache_size_queue: Some(100),
 				cache_size_state: Some(25),
--- a/parity/cli/tests/config.invalid4.toml
+++ b/parity/cli/tests/config.invalid4.toml
@@ -0,0 +1,2 @@
+[account]
+invalid = 5
--- a/parity/cli/tests/config.toml
+++ b/parity/cli/tests/config.toml
@@ -63,7 +63,7 @@ tx_queue_gas = "off"
 tracing = "on"
 pruning = "fast"
 pruning_history = 64
-cache_size_db = 128
+cache_size_db = 256
 cache_size_blocks = 16
 cache_size_queue = 100
 cache_size_state = 25
--- a/parity/configuration.rs
+++ b/parity/configuration.rs
@@ -337,6 +337,7 @@ impl Configuration {
 				daemon: daemon,
 				logger_config: logger_config.clone(),
 				miner_options: self.miner_options()?,
+				gas_price_percentile: self.args.arg_gas_price_percentile,
 				ntp_servers: self.ntp_servers(),
 				ws_conf: ws_conf,
 				http_conf: http_conf,
@@ -764,7 +765,8 @@ impl Configuration {
 	}

 	fn cors(cors: Option<&String>) -> Option<Vec<String>> {
-		cors.map(|ref c| c.split(',').map(Into::into).collect())
+		// Never return `None` here (enables CORS for all hosts).
+		Some(cors.map(|ref c| c.split(',').map(Into::into).collect()).unwrap_or_default())
 	}

 	fn rpc_cors(&self) -> Option<Vec<String>> {
@@ -1326,6 +1328,7 @@ mod tests {
 			daemon: None,
 			logger_config: Default::default(),
 			miner_options: Default::default(),
+			gas_price_percentile: 50,
 			ntp_servers: vec![
 				"0.parity.pool.ntp.org:123".into(),
 				"1.parity.pool.ntp.org:123".into(),
@@ -1510,7 +1513,7 @@ mod tests {
 		let conf2 = parse(&["parity", "--ipfs-api-cors", "http://parity.io,http://something.io"]);

 		// then
-		assert_eq!(conf0.ipfs_cors(), None);
+		assert_eq!(conf0.ipfs_cors(), Some(vec![]));
 		assert_eq!(conf1.ipfs_cors(), Some(vec!["*".into()]));
 		assert_eq!(conf2.ipfs_cors(), Some(vec!["http://parity.io".into(),"http://something.io".into()]));
 	}
--- a/parity/dapps.rs
+++ b/parity/dapps.rs
@@ -195,9 +195,7 @@ mod server {

 	pub struct Middleware;
 	impl RequestMiddleware for Middleware {
-		fn on_request(
-			&self, _req: &hyper::server::Request<hyper::net::HttpStream>, _control: &hyper::Control
-		) -> RequestMiddlewareAction {
+		fn on_request(&self, _req: hyper::Request) -> RequestMiddlewareAction {
 			unreachable!()
 		}
 	}
--- a/parity/helpers.rs
+++ b/parity/helpers.rs
@@ -21,7 +21,7 @@ use std::fs::File;
 use bigint::prelude::U256;
 use bigint::hash::clean_0x;
 use util::Address;
-use kvdb::CompactionProfile;
+use kvdb_rocksdb::CompactionProfile;
 use util::journaldb::Algorithm;
 use ethcore::client::{Mode, BlockId, VMType, DatabaseCompactionProfile, ClientConfig, VerifierType};
 use ethcore::miner::{PendingSet, GasLimit, PrioritizationStrategy};
@@ -239,10 +239,8 @@ pub fn to_client_config(
 	client_config.blockchain.max_cache_size = cache_config.blockchain() as usize * mb;
 	// in bytes
 	client_config.blockchain.pref_cache_size = cache_config.blockchain() as usize * 3 / 4 * mb;
-	// db blockchain cache size, in megabytes
-	client_config.blockchain.db_cache_size = Some(cache_config.db_blockchain_cache_size() as usize);
-	// db state cache size, in megabytes
-	client_config.db_cache_size = Some(cache_config.db_state_cache_size() as usize);
+	// db cache size, in megabytes
+	client_config.db_cache_size = Some(cache_config.db_cache_size() as usize);
 	// db queue cache size, in bytes
 	client_config.queue.max_mem_use = cache_config.queue() as usize * mb;
 	// in bytes
--- a/parity/ipfs.rs
+++ b/parity/ipfs.rs
@@ -34,8 +34,8 @@ impl Default for Configuration {
 			enabled: false,
 			port: 5001,
 			interface: "127.0.0.1".into(),
-			cors: None,
-			hosts: Some(Vec::new()),
+			cors: Some(vec![]),
+			hosts: Some(vec![]),
 		}
 	}
 }
--- a/parity/main.rs
+++ b/parity/main.rs
@@ -62,7 +62,7 @@ extern crate ethcore_bigint as bigint;
 extern crate ethcore_bytes as bytes;
 extern crate ethcore_network as network;
 extern crate migration as migr;
-extern crate kvdb;
+extern crate kvdb_rocksdb;
 extern crate ethkey;
 extern crate ethsync;
 extern crate node_health;
--- a/parity/migration.rs
+++ b/parity/migration.rs
@@ -22,7 +22,7 @@ use std::fmt::{Display, Formatter, Error as FmtError};
 use std::sync::Arc;
 use util::journaldb::Algorithm;
 use migr::{Manager as MigrationManager, Config as MigrationConfig, Error as MigrationError, Migration};
-use kvdb::{CompactionProfile, Database, DatabaseConfig};
+use kvdb_rocksdb::{CompactionProfile, Database, DatabaseConfig};
 use ethcore::migrations;
 use ethcore::db;
 use ethcore::migrations::Extract;
@@ -167,7 +167,7 @@ fn consolidate_database(
 	let config = default_migration_settings(compaction_profile);
 	let mut db_config = DatabaseConfig {
 		max_open_files: 64,
-		cache_sizes: Default::default(),
+		memory_budget: None,
 		compaction: config.compaction_profile,
 		columns: None,
 		wal: true,
@@ -283,7 +283,7 @@ mod legacy {
 	use std::path::{Path, PathBuf};
 	use util::journaldb::Algorithm;
 	use migr::{Manager as MigrationManager};
-	use kvdb::CompactionProfile;
+	use kvdb_rocksdb::CompactionProfile;
 	use ethcore::migrations;

 	/// Blocks database path.
--- a/parity/rpc.rs
+++ b/parity/rpc.rs
@@ -59,10 +59,10 @@ impl Default for HttpConfiguration {
 			interface: "127.0.0.1".into(),
 			port: 8545,
 			apis: ApiSet::UnsafeContext,
-			cors: None,
-			hosts: Some(Vec::new()),
+			cors: Some(vec![]),
+			hosts: Some(vec![]),
 			server_threads: 1,
-			processing_threads: 0,
+			processing_threads: 4,
 		}
 	}
 }
@@ -98,7 +98,7 @@ impl From<UiConfiguration> for HttpConfiguration {
 			interface: conf.interface,
 			port: conf.port,
 			apis: rpc_apis::ApiSet::UnsafeContext,
-			cors: None,
+			cors: Some(vec![]),
 			hosts: conf.hosts,
 			server_threads: 1,
 			processing_threads: 0,
--- a/parity/rpc_apis.rs
+++ b/parity/rpc_apis.rs
@@ -15,8 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.

 use std::cmp::PartialEq;
-use std::collections::BTreeMap;
-use std::collections::HashSet;
+use std::collections::{BTreeMap, HashSet};
 use std::str::FromStr;
 use std::sync::{Arc, Weak};

@@ -227,6 +226,7 @@ pub struct FullDependencies {
 	pub fetch: FetchClient,
 	pub remote: parity_reactor::Remote,
 	pub whisper_rpc: Option<::whisper::RpcFactory>,
+	pub gas_price_percentile: usize,
 }

 impl FullDependencies {
@@ -239,10 +239,10 @@ impl FullDependencies {
 		use parity_rpc::v1::*;

 		macro_rules! add_signing_methods {
-			($namespace:ident, $handler:expr, $deps:expr) => {
+			($namespace:ident, $handler:expr, $deps:expr, $nonces:expr) => {
 				{
 					let deps = &$deps;
-					let dispatcher = FullDispatcher::new(deps.client.clone(), deps.miner.clone());
+					let dispatcher = FullDispatcher::new(deps.client.clone(), deps.miner.clone(), $nonces, deps.gas_price_percentile);
 					if deps.signer_service.is_enabled() {
 						$handler.extend_with($namespace::to_delegate(SigningQueueClient::new(&deps.signer_service, dispatcher, &deps.secret_store)))
 					} else {
@@ -252,7 +252,13 @@ impl FullDependencies {
 			}
 		}

-		let dispatcher = FullDispatcher::new(self.client.clone(), self.miner.clone());
+		let nonces = Arc::new(Mutex::new(dispatch::Reservations::with_pool(self.fetch.pool())));
+		let dispatcher = FullDispatcher::new(
+			self.client.clone(),
+			self.miner.clone(),
+			nonces.clone(),
+			self.gas_price_percentile,
+		);
 		for api in apis {
 			match *api {
 				Api::Web3 => {
@@ -273,6 +279,7 @@ impl FullDependencies {
 							pending_nonce_from_queue: self.geth_compatibility,
 							allow_pending_receipt_query: !self.geth_compatibility,
 							send_block_number_in_get_work: !self.geth_compatibility,
+							gas_price_percentile: self.gas_price_percentile,
 						}
 					);
 					handler.extend_with(client.to_delegate());
@@ -281,7 +288,7 @@ impl FullDependencies {
 						let filter_client = EthFilterClient::new(self.client.clone(), self.miner.clone());
 						handler.extend_with(filter_client.to_delegate());

-						add_signing_methods!(EthSigning, handler, self);
+						add_signing_methods!(EthSigning, handler, self, nonces.clone());
 					}
 				},
 				Api::EthPubSub => {
@@ -318,7 +325,7 @@ impl FullDependencies {
 					).to_delegate());

 					if !for_generic_pubsub {
-						add_signing_methods!(ParitySigning, handler, self);
+						add_signing_methods!(ParitySigning, handler, self, nonces.clone());
 					}
 				},
 				Api::ParityPubSub => {
@@ -418,6 +425,7 @@ pub struct LightDependencies<T> {
 	pub geth_compatibility: bool,
 	pub remote: parity_reactor::Remote,
 	pub whisper_rpc: Option<::whisper::RpcFactory>,
+	pub gas_price_percentile: usize,
 }

 impl<C: LightChainClient + 'static> LightDependencies<C> {
@@ -435,6 +443,8 @@ impl<C: LightChainClient + 'static> LightDependencies<C> {
 			self.on_demand.clone(),
 			self.cache.clone(),
 			self.transaction_queue.clone(),
+			Arc::new(Mutex::new(dispatch::Reservations::with_pool(self.fetch.pool()))),
+			self.gas_price_percentile,
 		);

 		macro_rules! add_signing_methods {
@@ -472,6 +482,7 @@ impl<C: LightChainClient + 'static> LightDependencies<C> {
 						self.transaction_queue.clone(),
 						self.secret_store.clone(),
 						self.cache.clone(),
+						self.gas_price_percentile,
 					);
 					handler.extend_with(Eth::to_delegate(client.clone()));

@@ -487,6 +498,7 @@ impl<C: LightChainClient + 'static> LightDependencies<C> {
 						self.sync.clone(),
 						self.cache.clone(),
 						self.remote.clone(),
+						self.gas_price_percentile,
 					);
 					self.client.add_listener(
 						Arc::downgrade(&client.handler()) as Weak<::light::client::LightChainNotify>
@@ -516,6 +528,7 @@ impl<C: LightChainClient + 'static> LightDependencies<C> {
 						signer,
 						self.dapps_address.clone(),
 						self.ws_address.clone(),
+						self.gas_price_percentile,
 					).to_delegate());

 					if !for_generic_pubsub {
--- a/parity/run.rs
+++ b/parity/run.rs
@@ -87,6 +87,7 @@ pub struct RunCmd {
 	pub daemon: Option<String>,
 	pub logger_config: LogConfig,
 	pub miner_options: MinerOptions,
+	pub gas_price_percentile: usize,
 	pub ntp_servers: Vec<String>,
 	pub ws_conf: rpc::WsConfiguration,
 	pub http_conf: rpc::HttpConfiguration,
@@ -358,6 +359,7 @@ fn execute_light(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) ->
 		geth_compatibility: cmd.geth_compatibility,
 		remote: event_loop.remote(),
 		whisper_rpc: whisper_factory,
+		gas_price_percentile: cmd.gas_price_percentile,
 	});

 	let dependencies = rpc::Dependencies {
@@ -765,6 +767,7 @@ pub fn execute(cmd: RunCmd, can_restart: bool, logger: Arc<RotatingLogger>) -> R
 		fetch: fetch.clone(),
 		remote: event_loop.remote(),
 		whisper_rpc: whisper_factory,
+		gas_price_percentile: cmd.gas_price_percentile,
 	});

 	let dependencies = rpc::Dependencies {
--- a/parity/whisper.rs
+++ b/parity/whisper.rs
@@ -51,7 +51,7 @@ impl PoolHandle for NetPoolHandle {
 	fn relay(&self, message: Message) -> bool {
 		let mut res = false;
 		let mut message = Some(message);
-		self.net.with_proto_context(whisper_net::PROTOCOL_ID, &mut move |ctx| {
+		self.net.with_proto_context(whisper_net::PROTOCOL_ID, &mut |ctx| {
 			if let Some(message) = message.take() {
 				res = self.handle.post_message(message, ctx);
 			}
--- a/price-info/src/lib.rs
+++ b/price-info/src/lib.rs
@@ -86,7 +86,7 @@ impl<F> cmp::PartialEq for Client<F> {
 impl<F: Fetch> Client<F> {
 	/// Creates a new instance of the `Client` given a `fetch::Client`.
 	pub fn new(fetch: F) -> Client<F> {
-		let api_endpoint = "http://api.etherscan.io/api?module=stats&action=ethprice".to_owned();
+		let api_endpoint = "https://api.etherscan.io/api?module=stats&action=ethprice".to_owned();
 		Client { api_endpoint, fetch }
 	}

@@ -144,7 +144,7 @@ mod test {
 		type Result = FutureResult<fetch::Response, fetch::Error>;
 		fn new() -> Result<Self, fetch::Error> where Self: Sized { Ok(FakeFetch(None, Default::default())) }
 		fn fetch_with_abort(&self, url: &str, _abort: fetch::Abort) -> Self::Result {
-			assert_eq!(url, "http://api.etherscan.io/api?module=stats&action=ethprice");
+			assert_eq!(url, "https://api.etherscan.io/api?module=stats&action=ethprice");
 			let mut val = self.1.lock();
 			*val = *val + 1;
 			if let Some(ref response) = self.0 {
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -10,6 +10,7 @@ authors = ["Parity Technologies <admin@parity.io>"]
 [dependencies]
 ansi_term = "0.9"
 cid = "0.2"
+futures = "0.1"
 futures-cpupool = "0.1"
 log = "0.3"
 multihash ="0.6"
@@ -57,7 +58,6 @@ rlp = { path = "../util/rlp" }
 stats = { path = "../util/stats" }
 vm = { path = "../ethcore/vm" }
 hash = { path = "../util/hash" }
-kvdb = { path = "../util/kvdb" }
 hardware-wallet = { path = "../hw" }

 clippy = { version = "0.0.103", optional = true}
@@ -66,6 +66,7 @@ pretty_assertions = "0.1"
 [dev-dependencies]
 macros = { path = "../util/macros" }
 ethcore-network = { path = "../util/network" }
+kvdb-memorydb = { path = "../util/kvdb-memorydb" }

 [features]
 dev = ["clippy", "ethcore/dev", "ethcore-util/dev", "ethsync/dev"]
--- a/rpc/src/lib.rs
+++ b/rpc/src/lib.rs
@@ -65,8 +65,9 @@ extern crate rlp;
 extern crate stats;
 extern crate hash;
 extern crate hardware_wallet;
-extern crate kvdb;

+#[macro_use]
+extern crate futures;
 #[macro_use]
 extern crate log;
 #[macro_use]
@@ -85,6 +86,9 @@ extern crate pretty_assertions;
 #[macro_use]
 extern crate macros;

+#[cfg(test)]
+extern crate kvdb_memorydb;
+
 pub extern crate jsonrpc_ws_server as ws;

 mod authcodes;
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
5chdn	e3d32a4abb	Merge branch 'stable' of github.com:paritytech/parity into stable	2018-01-23 11:01:41 +01:00
Afri Schoedon	9c7359e343	Bump stable version (#7665 ) * Update .gitlab-ci.yml fix cache:key * Bump stable to 1.8.7	2018-01-23 11:01:09 +01:00
Marek Kotewicz	628f0878b1	Backports to stable (#7661 ) * Update .gitlab-ci.yml fix cache:key * Fixed delegatecall's from/to (#7568) * Fixed delegatecall's from/to, closes #7166 * added tests for delegatecall traces, #7167 * Fix Temporarily Invalid blocks handling (#7613) * Handle temporarily invalid blocks in sync. * Fix tests. * Improve handling of RocksDB corruption (#7630) * kvdb-rocksdb: update rust-rocksdb version * kvdb-rocksdb: mark corruptions and attempt repair on db open * kvdb-rocksdb: better corruption detection on open * kvdb-rocksdb: add corruption_file_name const * kvdb-rocksdb: rename mark_corruption to check_for_corruption	2018-01-23 10:58:08 +01:00
Denis S. Soldatov aka General-Beck	a835c13e6b	add docker build for stable and cargo cache (#7672 )	2018-01-23 06:20:22 +03:00
Denis S. Soldatov aka General-Beck	abcfcacf95	fix snapcraft build for stable (#7669 )	2018-01-23 04:12:36 +03:00
Denis S. Soldatov aka General-Beck	9abc6bd7d1	Gitlab stable update gitlab build script from master Signed-off-by: Denis S. Soldatov aka General-Beck <general.beck@gmail.com>	2018-01-23 03:01:42 +03:00
5chdn	5e775f3e27	Merge branch 'stable' of github.com:paritytech/parity into stable	2018-01-22 13:00:47 +01:00
Afri Schoedon	1eab85afc6	Update .gitlab-ci.yml (#7599 ) fix cache:key	2018-01-17 19:45:39 +03:00
Denis S. Soldatov aka General-Beck	662416f05b	Update .gitlab-ci.yml fix cache:key	2018-01-17 17:27:58 +01:00
Afri Schoedon	00b5d30d33	Make 1.8 stable (#7532 ) * Bump 1.8 to stable * Make js-precompiled stable	2018-01-17 12:28:38 +01:00
André Silva	2d051e4f79	kvdb: update rust-rocksdb version (#7508 )	2018-01-09 19:13:29 +01:00
Marek Kotewicz	a257827f27	backports to beta (#7434 ) * Merge pull request #7368 from paritytech/td-future-blocks Wait for future blocks in AuRa * Fix tracing failed calls. * Problem: sending any Whisper message fails The error is "PoW too low to compete with other messages" This has been previously reported in #7144 Solution: prevent the move semantics The source of the error is in PoolHandle.relay implementation for NetPoolHandle. Because of the move semantics, `res` variable is in fact copied (as it implements Copy) into the closure and for that reason, the returned result is always `false. * Merge pull request #7433 from paritytech/td-strict-config Strict config parsing * Problem: AuRa's unsafeties around step duration (#7282) Firstly, `Step.duration_remaining` casts it to u32, unnecesarily limiting it to 2^32. While theoretically this is "good enough" (at 3 seconds steps it provides room for a little over 400 years), it is still a lossy way to calculate the remaining time until the next step. Secondly, step duration might be zero, triggering division by zero in `Step.calibrate` Solution: rework the code around the fact that duration is typically in single digits and never grows, hence, it can be represented by a much narrower range (u16) and this highlights the fact that multiplying u64 by u16 will only result in an overflow in even further future, at which point we should panic informatively (if anybody's still around) Similarly, panic when it is detected that incrementing the step counter wrapped around on the overflow of usize. As for the division by zero, prevent it by making zero an invalid value for step duration. This will make AuRa log the constraint mismatch and panic (after all, what purpose would zero step duration serve? it makes no sense within the definition of the protocol, as finality can only be achieved as per the specification if messages are received within the step duration, which would violate the speed of light and other physical laws in this case). * Merge pull request #7437 from paritytech/a5-chains-expanse Remove expanse chain * Expanse Byzantium update w/ correct metropolis difficulty increment divisor (#7463) * Byzantium Update for Expanse Here the changes go. Hope I didnt miss anything. * expip2 changes - update duration limit * Fix missing EXPIP-2 fields * Format numbers as hex * Fix compilation errors * Group expanse chain spec fields together * Set metropolisDifficultyIncrementDivisor for Expanse * Revert #7437 * Add Expanse block 900_000 hash checkpoint * Advance AuRa step as far as we can and prevent invalid blocks. (#7451) * Advance AuRa step as far as we can. * Wait for future blocks. * fixed panic when io is not available for export block, closes #7486 (#7495) * Update Parity Mainnet Bootnodes (#7476) * Update Parity Mainnet Bootnodes * Replace the Azure HDD bootnodes with the new ones :) * Use https connection (#7503) Use https when connecting to etherscan.io API for price-info * Expose default gas price percentile configuration in CLI (#7497) * Expose gas price percentile. * Fix light eth_call. * fix gas_price in light client	2018-01-09 13:55:10 +01:00
Tomasz Drwięga	c3727266e1	[beta] Backport nonces reservations (#7439 ) * Reserve nonces for signing (#6834) * Nonce future - reserve and dispatch * Single thread nonce tests * Track status of reserved nonces. * Initialization of nonce reservations. * Prospective Signer * Fix cli tests. * Merge pull request #7025 from paritytech/fix-nonce-reservation Fix nonce reservation * Fix build.	2018-01-09 11:13:27 +01:00
Afri Schoedon	364bf48cef	Bump beta to 1.8.6 (#7442 ) * Bump beta to 1.8.6 * Fix Cargo.lock	2018-01-04 09:32:38 +01:00
Marek Kotewicz	849e574c2c	Merge pull request #7438 from paritytech/beta-backports-kvdb [beta] kvdb backports	2018-01-03 16:08:56 +01:00
André Silva	e93872e7bb	Upgrade to RocksDB 5.8.8 and tune settings to reduce space amplification (#7348 ) * kvdb-rocksdb: update to RocksDB 5.8.8 * kvdb-rocksdb: tune RocksDB options * Switch to level-style compaction * Increase default block size (16K), and use bigger blocks for HDDs (64K) * Increase default file size base (64MB SSDs, 256MB HDDs) * Create a single block cache shared across all column families * Tune compaction settings using RocksDB helper functions, taking into account memory budget spread across all columns * Configure backgrounds jobs based on the number of CPUs * Set some default recommended settings * ethcore: remove unused config blockchain.db_cache_size * parity: increase default value for db_cache_size * kvdb-rocksdb: enable compression on all levels * kvdb-rocksdb: set global db_write_bufer_size * kvdb-rocksdb: reduce db_write_bufer_size to force earlier flushing * kvdb-rocksdb: use master branch for rust-rocksdb dependency	2018-01-03 13:40:58 +00:00
Marek Kotewicz	61c3e1a2d6	Merge pull request #6720 from paritytech/kvdb_split separated kvdb into 3 crates: kvdb, kvdb-memorydb && kvdb-rocksdb	2018-01-03 13:22:31 +00:00
Afri Schoedon	54bae9a0f2	Beta Backports (#7297 ) * new warp enodes (#7287) * new warp enodes * added one more warp enode; replaced spaces with tabs * Bump beta to 1.8.5 * Update kovan boot nodes * detect different node, same-key signing in aura (#7245) * detect different node, same-key signing in aura * reduce scope of warning * Fix Cargo.lock * Updating mainnet bootnodes. * Update bootnodes (#7363) * Updating mainnet bootnodes. * Add additional parity-beta bootnodes. * Restore old parity bootnodes and update foudation bootnodes	2017-12-28 15:18:21 +01:00
Tomasz Drwięga	42dd3addea	Fix default CORS. (#7388 )	2017-12-27 18:56:23 +01:00
Tomasz Drwięga	c74c8c1ac1	[beta] Backports + HF block update (#7244 ) * Reduce max block timestamp drift to 15 seconds (#7240) * reduce max block timestamp drift to 15 seconds * add test for block timestamp validation within allowed drift * Update kovan HF block number.	2017-12-11 14:11:41 +01:00
Tomasz Drwięga	4e39c318aa	[beta] Kovan HF (#7234 ) * Kovan HF. * Bump version. * Fix aura difficulty race (#7198) * Fix Aura difficulty race * fix test key * extract out score calculation * fix build * Update kovan HF block number. * Add missing byzantium builtins. * Bump installers versions. * Increase allowed time drift to 10s. (#7238)	2017-12-08 13:08:15 +01:00
Robert Habermeier	03b1e9d8ba	Merge pull request #7197 from paritytech/td-beta-backports Beta backports	2017-12-06 15:18:45 +01:00
Tomasz Drwięga	fdaedc8c00	Maximum uncle count transition (#7196 ) * Enable delayed maximum_uncle_count activation. * Fix tests. * Defer kovan HF.	2017-12-05 16:01:52 +01:00
Marek Kotewicz	d60fe51553	Merge pull request #7006 from paritytech/no-uncles Disable uncles by default	2017-12-05 16:01:44 +01:00
Robert Habermeier	c7621b9bbf	Merge pull request #7075 from miyao-gmo/feature/estimate_gas_limit escape inifinite loop in estimte_gas	2017-12-04 16:18:22 +01:00
Marek Kotewicz	0ec35d9ac5	Merge pull request #7067 from sorpaas/patch-1 ECIP-1039: Monetary policy rounding specification	2017-12-04 16:15:06 +01:00
Sergey Pepyakin	ef702b77dc	WASM Remove blockhash error (#7121 ) * Remove blockhash error * Update tests.	2017-12-04 16:14:46 +01:00
Marek Kotewicz	a8cf4efc91	Merge pull request #7110 from paritytech/remove-storage-error WASM storage_read and storage_write don't return anything	2017-12-04 16:14:23 +01:00
Marek Kotewicz	aeb43b6af0	Merge pull request #7097 from paritytech/panic-payload-with-msg WASM parse payload from panics	2017-12-04 16:13:29 +01:00
Tomasz Drwięga	dcdde49d91	Fix no-default-features.	2017-12-04 15:32:24 +01:00