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.gitignore vendored
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@ -3,7 +3,6 @@ gmon.out
dist dist
build build
*.egg-info *.egg-info
.venv
solidity/*.json solidity/*.json
solidity/*.interface solidity/*.interface
solidity/*.bin solidity/*.bin

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CHANGELOG
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@ -1,9 +1,7 @@
- 0.2.0
- Bump chainlib-eth>=0.3.0,<0.4.0
- 0.0.3 - 0.0.3
- Update contracts to cic-base state 0.1.2-beta.5 * Update contracts to cic-base state 0.1.2-beta.5
- Add interface digest generator script * Add interface digest generator script
- 0.0.2 - 0.0.2
- Add token endorser contract * Add token endorser contract
- 0.0.1 - 0.0.1
- Consolidate all existing contract interfaces * Consolidate all existing contract interfaces

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LICENSE.GPL3
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@ -1,235 +1,674 @@
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If the Program specifies that a proxy can decide which future
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15. Disclaimer of Warranty.
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PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
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PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
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17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. If you develop a new program, and you want it to be of the greatest
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Also add information on how to contact you by electronic and paper mail. Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer network, you should also make sure that it provides a way for users to get its source. For example, if your program is a web application, its interface could display a "Source" link that leads users to an archive of the code. There are many ways you could offer source, and different solutions will be better for different programs; see section 13 for the specific requirements. If the program does terminal interaction, make it output a short
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This is free software, and you are welcome to redistribute it
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The hypothetical commands `show w' and `show c' should show the appropriate
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For more information on this, and how to apply and follow the GNU GPL, see
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The GNU General Public License does not permit incorporating your program
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<https://www.gnu.org/licenses/why-not-lgpl.html>.

1
MANIFEST.in
View File

@ -1 +0,0 @@
include *requirements.txt python/cic/* python/cic/runnable/* LICENSE README*

18
Makefile
View File

@ -6,7 +6,7 @@ INPUTS = $(wildcard solidity/*.sol)
OUTPUTS_JSON = $(patsubst %.sol, %.json, $(INPUTS)) OUTPUTS_JSON = $(patsubst %.sol, %.json, $(INPUTS))
OUTPUTS_INTERFACE = $(patsubst %.sol, %.interface, $(INPUTS)) OUTPUTS_INTERFACE = $(patsubst %.sol, %.interface, $(INPUTS))
OUTPUTS = $(OUTPUTS_JSON) $(OUTPUTS_INTERFACE) OUTPUTS = $(OUTPUTS_JSON) $(OUTPUTS_INTERFACE)
PREFIX = $(DESTDIR)/usr/local/share/cic/solidity/abi PREFIX = /usr/local/share/cic/solidity/abi
#%.abi.json: $(wildcard *.sol) #%.abi.json: $(wildcard *.sol)
# install -vDm0644 $@ $(PREFIX)/$@ # install -vDm0644 $@ $(PREFIX)/$@
@ -40,20 +40,4 @@ doc:
bash texify.sh bash texify.sh
make -C doc/texinfo make -C doc/texinfo
readme:
make -C doc/texinfo readme
pandoc -f docbook -t gfm doc/texinfo/build/docbook.xml > README.md
cp -v README.md python/README.md
python-contract: outs
mkdir -vp python-contract-interfaces/cic_contracts/data
cp -v solidity/*.interface python-contract-interfaces/cic_contracts/data
cp -v solidity/*.json python-contract-interfaces/cic_contracts/data
make -C python-contract-interfaces
python-cic: python
python setup.py sdist
python: python-cic python-contract
.PHONY: clean install .PHONY: clean install

983
README.md
View File

@ -1,983 +0,0 @@
# Smart contract interfaces
## Technology
CIC smart contracts are implemented using the *solidity* programming
language for the (Ethereum Virtual Machine (EVM).
## Adopted standards
### Signing
### ERC - Direct use
The following well-known solidity interfaces are used directly.
- [ERC20 - Token Standard](https://eips.ethereum.org/EIPS/eip-20)
- [ERC165 - Standard Interface
Detection](https://eips.ethereum.org/EIPS/eip-165)
- [ERC173 - Contract Ownership
Standard](https://eips.ethereum.org/EIPS/eip-173)
- [ERC191 - Signed Data
Standard](https://eips.ethereum.org/EIPS/eip-191)
- [ERC712 - Typed structured data hashing and
signing](https://eips.ethereum.org/EIPS/eip-712)
- [ERC721 - Non-Fungible Token
Standard](https://eips.ethereum.org/EIPS/eip-721)
- [ERC5007 - Time NFT (EIP-721 Time
Extension)](https://eips.ethereum.org/EIPS/eip-5007)
- [ERC5192 - Minimal Soulbound
NFTs](https://eips.ethereum.org/EIPS/eip-5192)
### ERCs Partial use
The following well-known solidity interfaces are partially implemented
in CIC native interfaces.
- [ERC5679 - Token Minting and
Burning](https://eips.ethereum.org/EIPS/eip-5679) (See `Minter`,
`Burner`)
## Native interfaces
### ACL
A simple Access Control List definition that returns true of false
depending on whether an signatory (address) is allowed to operate in a
given context.
#### ERC165 Interface identifier
3ef25013
#### Solidity interface definition
interface IACL {
// Returns true if the address has permission to operate in the given context.
function have(address _address) external view returns(bool);
}
#### Example implementation
<git://holbrook.no/eth-accounts-index.git>
### Accounts Index
Append-only list of addresses. Typically used for access control lists.
Addresses may be *added*, *removed*, aswell as *deactivated* and
*activated*. Deactivated accounts still count towards the `entryCount`.
The `entry` method is used to iterate the account list. The order of
which accounts are returned is not guaranteed. Any returned value
matching `address(0x00)` should be skipped, and not counted towards
`entryCount`.
May optionally record time when account was added.
#### ERC165 Interface identifier
b7bca625
#### Solidity interface definition
interface IAccountsIndex {
// Address added to store, index in array.
event AddressAdded(uint256 indexed _idx, address _account);
// Return number of entries in index.
function entryCount() external view returns (uint256);
// Return entry at the spceificed index.
// Will revert if index is beyond array length.
// An entry result of 0 means the entry should be skipped, and not count towards entry count.
function entry(uint256) external view returns (address);
// Add an entry to the index. Incresases the entry count.
function add(address) external returns (bool);
// Verify that the entry exists in the index.
// Implements ACL
function have(address) external view returns (bool);
// Retrieve the timestamp when account was added.
// If time is not being tracked, a value of 0 should be returned.
function time(address) external view returns (uint256);
}
#### Reference implementation
<git://holbrook.no/eth-accounts-index.git> (v0.5.1)
### Accounts Index Mutable
Extends the functionality of `Accounts Index` to allow changes to the
address list.
Addresses may be *added*, *removed*, aswell as *deactivated* and
*activated*. Deactivated accounts still count towards the `entryCount`.
#### ERC165 Interface identifier
9479f0ae
#### Solidity interface definition
interface IAccountsIndexMutable {
// Active status of address changed, and by whom changed.
event AddressActive(address indexed _account, bool _active);
// Address removed from store, and by whom removed.
event AddressRemoved(address _account);
// Remove an entry from the index. Reduces the entry count.
function remove(address) external returns (bool);
// Deactivate account but keep in index. Does not affect entry count.
function deactivate(address) external returns (bool);
// Activate previously deactivated account. Does not affect entry count.
function activate(address) external returns (bool);
// Check if account exists and is active;
function isActive(address) external view returns (bool);
}
#### Reference implementation
<git://holbrook.no/eth-accounts-index.git> (v0.5.1)
### Burner
Attached to `ERC20` and `ERC721` tokens that may be *burned*.
Implements the `burn(...)` part of `ERC5679` for interoperability.
#### ERC165 Interface identifier
b1110c1b
#### Solidity interface definition
interface IBurner {
// Token(s) successfully burned; by who and how much.
event Burn(address indexed _burner, uint256 _burned);
// Satisfies ERC 5679
function burn(address _from, uint256 _amount, bytes calldata _data) external;
// Burn given amount of tokens held by signer.
function burn(uint256 _amount) external returns (bool);
// Burn all tokens held by signer.
// Returns the amount of tokens burned.
function burn() external returns (uint256);
// Total amount of tokens that have been burned.
function totalBurned() external returns (uint256);
// Total amount of tokens ever minted.
// If totalSupply() is available (ERC20, ERC721 Enumerable), this equals totalSupply() + totalBurned().
function totalMinted() external returns (uint256);
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>
### Chrono
Define a creation time for a resource.
Complements `ERC5007`.
#### ERC165 Interface identifier
4db1ccd4
#### Solidity interface definition
interface IChrono {
// Returns the timestamp of when a resource corresponding to _idx was first created.
// int64 chosen as return value for simpler interoperability with ERC5007.
function createTime(uint256 _idx) external returns(int64);
}
#### Example implementation
<https://git.defalsify.org/eth-erc721> (BadgeToken contract)
### Declarator
Permissionless store of signed claims made by an address about other
addresses, or addresses about themselves.
It is used to declare or respond to certifications of vouchers, NFT,
voucher members.
Addresses may be Externally Owned Accounts or smart contracts.
Claims may be made with or without topics. A missing topic is synonymous
with a topic value of `bytes32(0x00)`.
Any number of claims can be made about an address under any number of
topics. All claims must be stored, and returned in the order which they
were added.
#### ERC165 Interface identifier
21b7493b
#### Solidity interface definition
interface IDeclarator {
event DeclarationAdded(address indexed _declarator, address indexed _subject, bytes32 indexed _topic, bytes32 _proof);
// Get all declarations for a subject (without topic) signed by a declarator
function declaration(address _declarator, address _subject) external view returns ( bytes32[] memory );
// Get all declarations for a subject for the given topic signed by a declarator
function declaration(address _declarator, address _subject, bytes32 _topic) external view returns ( bytes32[] memory );
// Get number of declarations the declarator has ever signed
function declarationCount(address _declarator) external view returns ( uint256 );
// Get the subject of a declarator's declarations at the specific index
function declarationAddressAt(address _declarator, uint256 _idx) external view returns ( address );
// Add a declaration for the subject
function addDeclaration(address _subject, bytes32 _proof) external returns ( bool );
// Add a declaration with topic for the subject
function addDeclaration(address _subject, bytes32 _proof, bytes32 _topic) external returns ( bool );
// Get the declarator that signed a declaration at the specificed index for a subject
function declaratorAddressAt(address _subject, uint256 _idx) external view returns ( address );
// Get the number of declarators that have signed for a subject
function declaratorCount(address _subject) external view returns ( uint256 );
}
#### Reference implementation
<git://holbrook.no/eth-address-index.git>
### Digest
Allows encoding of digests according to a specific encoding scheme.
Primary use-case is the abstraction of self-describing
[Multhash](https://multiformats.io/multihash/) encoding.
A default encoding *must* always be defined, and the encoding of a valid
digest *must* succeed with the default encoding.
#### ERC165 Interface identifier
982ab05d
#### Solidity interface definition
interface IDigest {
// Returns the default digest encoding used by the contract instance.
function defaultDigestEncoding() external view returns (uint256 _encoding);
// Check if the given encoding has been implemented in the contract instance.
function haveDigestEncoding(uint256 _codec) external view returns(bool);
// Verify and encode the given digest for a specific hashing algorithm.
// Returns a zero-length byte array if digest is invalid.
// Must succeed if called with the defaultDigestEncoding and a valid digest.
function encodeDigest(bytes memory _data, uint256 _encoding) external view returns (bytes memory);
// Encodes the digest using the default digest encoding.
// Returns a zero-length byte array if digest is invalid.
// Must succeed with a valid digest.
function encodeDigest(bytes memory _data) external view returns (bytes memory);
}
#### Example implementation
<git://holbrook.no/eth-event-msg.git>
### Expire
Defines an expiry time after which token balances and supply *cannot
change*.
A contract defining an expiry *must not* allow changing the expiration
time to a time in the past.
#### ERC165 Interface identifier
841a0e94
#### Solidity interface definition
interface IExpire {
// Contract has expired.
event Expired(uint256 _timestamp);
// Expiry time has changed.
event ExpiryChange(uint256 indexed _oldTimestamp, uint256 _newTimestamp);
// The current expiration timestamp.
function expires() external returns (uint256);
// Check expiry and apply expiration if expired.
// Return values must be:
// 0: not yet expired.
// 1: already expired.
// >1: expiry executed.
function applyExpiry() external returns(uint8);
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>
### Faucet
Used for dispensing tokens to any address.
It can be used for gas tokens and *ERC20* alike.
The interface is the same whether the faucet is dispensing from existing
balance or minting new tokens.
The value dispersed *must* be the same for all addresses.
In general, four criteria are expected to exist in any combination for
limiting access to the faucet:
Time
A recipient may only use the faucet again after some time has passed.
Balance threshold
A recipient may only use the faucet after its balance is below a certain
amount.
Membership
A recipient may only use the faucet if it has been added to an access
control list.
Capacity
The contract has sufficient token funds to dispense the current defined
amount to dispense.
The *check(address)* contract call *must* evaluate all four criteria,
and *must* return `false` if any of the criteria are not met.
#### ERC165 Interface identifier
1a3ac634
#### Solidity interface definition
interface IFaucet {
// Tokens were given to an address
event Give(address indexed _recipient, address indexed _token, uint256 _value);
// The amount that the faucet disperses has changed
event FaucetAmountChange(uint256 _value);
// Address of token the faucet represents
// The faucet will return gas tokens with the zero-address is returned.
function token() external returns (address);
// Amount of tokens the faucet gives out
function tokenAmount() external returns (uint256);
// Give tokens to the given recipient. Returns amount of tokens given.
function giveTo(address _recipient) external returns (uint256);
// Give tokens to yourself. Returns amount of tokens given.
function gimme() external returns (uint256);
// Check if faucet may be used in the current contract state by _recipient
function check(address _recipient) external view returns (bool);
// Returns timestamp when faucet may be used again by _recipient
// If 0 is returned, the address has not yet been used.
// A return value of max(uint256) indicates that the faucet may not be used again.
function nextTime(address _recipient) external returns (uint256);
// Returns the token balance under which faucet may be used again by _recipient
// A return value of max(uint256) indicates that the faucet may be used regardless
// of the token balance of _recipient
function nextBalance(address _recipient) external returns (uint256);
}
#### Reference implementations
- <git://holbrook.no/erc20-faucet.git>
- <git://holbrook.no/eth-faucet.git>
### Locator
This interface supports `ERC721 Metadata`, in particular the
`tokenURI(uint256)` call.
Off-chain resources in the CIC network *must* be defined in terms of
content addressed strings.
It *must* be possible to refer to all off-chain resources directly by
the content address.
Furthermore, it *should* be possible to refer to a resource by a
fully-qualified location on the web or an overlay network (e.g. tor).
#### ERC165 Interface identifier
ed75b333
#### Solidity interface definition
interface ILocator {
// URI that may or may not point to a specific resource location.
function toURI(bytes memory _data) external view returns (string memory);
// URL pointing to a specific resource location.
function toURL(bytes memory _data) external view returns(string memory);
}
#### Example implementation
<git://holbrook.no/eth-event-msg.git>
#### Expressing locators in terms of numeric token id
Given the numeric token id `1234567890987654321` (`0x112210f4b16c1cb1`
hex), and a base url `https://contentgateway.grassecon.net`, the result
of the methods may be as follows:
`toURI(toHex(1234567890987654321))`
-\>
`https://contentgateway.grassecon.net/000000000000000000000000000000000000000000000000112210f4b16c1cb1`
`toURL(toHex(1234567890987654321))`
-\>
`https://contentgateway.grassecon.net/000000000000000000000000000000000000000000000000112210f4b16c1cb1`
`tokenURI(1234567890987654321)`
-\>
`https://contentgateway.grassecon.net/000000000000000000000000000000000000000000000000112210f4b16c1cb1`
#### Expressing locators in terms of a digest
Given the data `foo`, the digest algorithm `sha256` and a base url
`https://contentgateway.grassecon.net`, the result of the methods may be
as follows:
`toURI(sha256(foo))`
-\>
`"sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
`toURL(sha256(foo))`
-\>
`"https://contentgateway.grassecon.net/2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
`tokenURI(toUint(sha256(foo)))`
-\>
`"https://contentgateway.grassecon.net/2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
#### Locator without URL
Given the data `foo`, the digest algorithm `sha256` and no base url, the
result of the methods may be as follows:
`toURI(sha256(foo))`
-\>
`"sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
`toURL(sha256(foo))`
-\> `""`
`tokenURI(toUint(sha256(foo)))`
-\>
`"sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
### Minter
Attached to `ERC20` and `ERC721` tokens that may be minted.
Implements the `mint(...)` and `safeMint(...)` parts of `ERC5679` for
interoperability.
#### ERC165 Interface identifier
5878bcf4
#### Solidity interface definition
interface IMinter {
// Tokens are successfully minted; by who, to whom and how much
event Mint(address indexed _minter, address indexed _beneficiary, uint256 value);
// The given token has been successfully minted; by who, to whom and how much
event Mint(address indexed _minter, address indexed _beneficiary, address indexed _token, uint256 value);
// Mint the specified value of tokens to the specified recipient
function mintTo(address _beneficiary, uint256 value) external returns (bool);
// Satisfies ERC5679 for ERC20
function mint(address _beneficiary, uint256 value, bytes calldata _data) external;
// Satisfies ERC5679 for ERC721
function safeMint(address _beneficiary, uint256 value, bytes calldata _data) external;
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>
### Msg
Enables a reference "message" to describe the contract using an
off-chain resource.
The reference may or may not be mutable.
The interface complements `Locator` and `MultiHash` to generate locators
for how to resolve the reference.
#### ERC165 Interface identifier
a3002595
#### Solidity interface definition
interface IMsg {
// Emitted when a new message digest has been set
// Should not be emitted if the digest set is identical to the previous
event Msg(bytes _msgDigest);
// Get the current message content hash
function getMsg() external view returns(bytes memory);
}
#### Example implementation
<git://holbrook.no/eth-event-msg.git>
### Registry
The Registry interface is a key-value store resolving well-known
contract identifier names to contract addresses.
It currently has two distinct uses in the CIC context:
1. Entry-point to discover all relevant contracts of CIC networks.
2. Unique (ERC20) token symbol resolver.
#### ERC165 Interface identifier
effbf671
#### Solidity interface definition
interface IRegistryClient {
// Address added to store with the given key
event AddressKey(bytes32 indexed _key, address _address);
// Return the address of the contract identified by the given byte string
function addressOf(bytes32) external view returns (address);
// Indexed accessor for the full list of registred identifiers
function identifier(uint256) external view returns (bytes32);
// Number of registered interfaces
function identifierCount() external view returns (uint256);
}
#### Contract registry implementation
<git://holbrook.no/eth-contract-registry.git>
#### Token index implementation
<git://holbrook.no/eth-contract-registry.git>
### Seal
Some smart contract parameters may need to be mutable over part of a
smart contract’s lifetime.
This interface provides a method to explicitly signal when certain
parameters have been rendered immutable.
The value of `sealState()` *must not* decrease, and must not exceed
`maxSealState`.
`maxSealState` is used to define that *all mutable parameters* have been
rendered immutable. The practical implications of this will vary between
contracts.
The implementer is encouraged to use simple, descriptive names in the
source code to describe the applicable seal states.
Use cases of sealing include:
- Whether more tokens can be minted
- Allow ownership of a contract to be transferred
- The expiry time of a token (see `Expire`)
#### ERC165 Interface identifier
0d7491f8
#### Solidity interface definition
interface ISeal {
// Seal state has changed.
event SealStateChange(bool indexed _final, uint256 _sealState);
// The current seal state.
function sealState() external view returns(uint256);
// The numeric seal state in everything sealable has been sealed.
function maxSealState() external view returns(uint256);
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>
### Throttle
An backend contract to limit access to a resource by time.
The smart contract managing the resource calls `have(address)` on this
contract to check if it can be made use of at the current point in time.
This also implements [ACL](#acl).
When the resource is made use of, it calls `poke(address)` method to
register when it has been made use of.
The `next(address)` method returns the timestamp from which the resource
may be used again by the given address. The implementer is permitted to
change the value at any time.
#### ERC165 Interface identifier
242824a9
#### Solidity interface definition
interface IThrottle {
// Returns true if the given address is authorized to make use of the resource at the current moment.
// Implements ACL
function have(address _address) external view returns(bool);
// Returns the timestamp when the resource may next be used by the given address.
// A return value of 0 or a timestamp before the current timestamp indicates that the resource may used momentarily.
// A return value of max uint265 can be used to indicate that the resource may never be used again by the address.
function next(address _address) external returns(bool);
// Must be called when the resource is being used.
function poke(address _address) external returns(bool);
}
#### Reference implementation
<git://holbrook.no/eth-faucet.git> (PeriodSimple contract)
### TokenLimit
Define limits of value amounts of tokens that individual addresses can
hold.
Limits are inclusive; a limit for 42 means transfer resulting in a token
balance *higher* than 42 should be rejected.
A return value of 0 indicates that the token is categorically not
accepted by the holder.
#### ERC165 Interface identifier
23778613
#### Solidity interface definition
interface ITokenLimit {
// Returns limit of total value a holder will accept of a specific token.
// The value limit returned is inclusive; A limit of 42 means any operation resulting in a balance OVER 42 should be rejected.
// A value of 0 means that no value of the token is accepted.
function limitOf(address _token, address _holder) external view returns(uint256);
}
#### Reference implementations
- <git://holbrook.no/erc20-limiter.git>
### TokenQuote
Quote an output token value for a given value of input tokens.
Both input and output value is denominated in the smallest available
unit of respective tokens.
#### ERC165 Interface identifier
dbb21d40
#### Solidity interface definition
interface ITokenQuote {
// Returns, within a current context, what value of outTokens the given value of inTokens translates to.
// The values are given in smallest unit of each respective token.
function valueFor(address _outToken, address _inToken, uint256 value) external view returns (uint256);
}
#### Example implementation
- <git://holbrook.no/erc20-limiter.git>
### TokenRateChange
Enables detection of properties for CIC tokens that change value over
time, e.g. through demurrage.
It allows defining the granularity of the rate of change, aswell as a
frequency for which the rate of change is applied.
A method for canonical value change calculations is also provided.
#### ERC165 Interface identifier
b716af03
#### Solidity interface definition
interface ITokenChangeRate {
// Time unit resolution for rate of change.
// A value of 0 indicates no rate of change,
function changeTimeUnit() external view returns(uint256);
// Rate of change per changeTimeUnit(), signed integer.
// An effective value of 0 indicates no rate of change.
function changeRate() external view returns (int256);
// Number of decimals with which the changeRate is defined.
// changeRate() should be divided by 10 ** changeRateDecimals() to obtain effective value
function changeRateDecimals() external view returns(uint8);
// Timestamp from when rate of change should be applied.
// A value of 0 indicates no rate of change,
function changeStartTime() external view returns(uint256);
// Calculate value with change rate applied for given amount of time units.
// Will calculate compounded change over the given amount of time units
function applyChange(int256 _value, uint256 _changeTimeUnits) external view returns(int256);
}
#### Reference implementations
- <git://holbrook.no/erc20-demurrage-token.git>
### TokenSwap
Token swap interface that can fit token escrow purposes aswell as token
swap contracts.
Optionally may define a `defaultToken`, that may among other things be
used for `withdraw()` calls without an `inToken`.
An explicit *ERC20 approval* of the balance to be transacted will
usually be required for the implementing contract.
If the value 0 is passed as argument to `deposit` or `withdraw`,
implementers can choose one of two possible outcomes:
- Noop. 0 *must* be returned.
- Use *balance* or the max available *allowance*. The actual (spent)
value *must* be returned.
#### ERC165 Interface identifier
4146b765
#### Solidity interface definition
interface ITokenSwap {
// Emitted when a new deposit has been made.
event Deposit(address indexed _token, uint256 _value);
// Default token used to access the token swap.
// Returns zero-address if no default token is defined.
function defaultToken() external returns (address);
// Add inToken liquidity to the tune of given value.
// Requires token approval for the corresponding value.
// If value is 0, up to the full approval MAY be used for the transfer.
function deposit(address _inToken, uint256 _value) external returns (uint256);
// Withdraw pending outToken balance of given value in the pool for the sender.
// May require token approval for defaultToken if used by contract as exchange for the withdrawal.
// If value is 0, up to the full approval value MAY be used for the transfer.
function withdraw(address _outToken, uint256 _value) external returns (uint256);
// Exchange inToken equalling given value for outToken.
// Requires token approval for the value of inToken.
// If value is 0, up to the full approval value MAY be used for the transfer.
function withdraw(address _outToken, address _inToken, uint256 _value) external returns (uint256);
}
#### Reference implementations
- <git://holbrook.no/erc20-pool.git>
#### Handling deposits
The implementation is free to decide whether deposits can be recovered
directly, or if they will be locked in the smart contract - temporarily
or permanently.
For the duration deposits are locked, they are part of the smart
contract’s swap liquidity. During this time, locked deposits may only be
withdrawn in exchange for other tokens accepted by the contract.
Deposits that are not locked should be withdrawable using the
`withdraw(address,uint256)` (`0xf3fef3a3`) method signature.
Of course, as with most swap contracts, the tokens available for
withdrawal by the holder may not necessarily match the tokens that were
deposited by the holder.
### TokenVote
Execute elections with granular ERC20 token votes.
A proposal submitted for vote may or may not contain multiple options.
If multiple options are available, an ERC20 token holder may distribute
its vote among the options with the granularity of the token balance.
Voted tokens **SHOULD** be locked until the voting has finalized.
Finalization of voting should be callable by anyone.
#### ERC165 Interface identifier
f2e0bfeb
#### Solidity interface definition
interface ITokenVote {
// A new proposal has been created.
event ProposalAdded(uint256 indexed _blockDeadline, uint256 indexed voteTargetPpm, uint256 indexed _proposalIdx);
// A proposal vote has been completed.
// The proposal is identified by the serial number in _proposalIdx. It is up to the implementer to define how the proposal should be retrieved by index.
// The proposal result may be in one of three states:
// * Ratified (_cancelled == false, _insufficient == false)
// * Cancelled (_cancelled == true, _insufficient == false)
// * Not reached quorum (_cancelled == false, _insufficient == true)
event ProposalCompleted(uint256 indexed _proposalIdx, bool indexed _cancelled, bool indexed _insufficient, uint256 _totalVote);
// Propose a new vote.
// Voting is active until one of:
// * total cancel vote reach quorum (_targetVotePpm, ppm = parts-per-million).
// * _blockWait blocks from now.
function propose(bytes32 _description, uint256 _blockWait, uint24 _targetVotePpm) external returns (uint256);
// Add a voting option to a proposal
function addOption(uint256 _proposalIdx, bytes32 _description) external;
// Get number of options available for the proposal.
// This decides the boundary of the index that can be used with voteOptions(...)
// If the result is 0, vote(...) can be used aswell.
function optionCount(uint256 _proposalIdx) external view returns(uint256);
// Get proposal option. Assumes that proposal was created with proposeMulti(...)
function getOption(uint256 _proposalIdx, uint256 _optionIdx) external view returns (bytes32);
// Get vote count for the given option.
// If proposal has no options, it should be called with _optionIdx = 0
function voteCount(uint256 _proposalIdx, uint256 _optionIdx) external view returns(uint256);
// Vote on a proposal without options.
// Assumes that proposal was created with propose(...) and will fail otherwise.
function vote(uint256 _value) external returns (bool);
// Vote on a proposal option. Assumes that proposal was created with proposeMulti(...).
// Must work with a non-option proposal if _optionIndex is 0.
function voteOption(uint256 _optionIndex, uint256 _value) external returns (bool);
// Vote to cancel a proposal.
// If cancel has the majority:
// * A vote without options will have rejected the proposal description.
// * A vote with options will have rejected the proposal description as well as all option descriptions.
function voteCancel(uint256 _value) external returns (bool);
// Finalize the vote for a proposal.
// May be called if deadline has been passed, or if:
// * quorum has been reached with cancel votes.
// * quorum has been reached and proposal has no/only one option.
function finalize() external returns (bool);
}
#### Reference implementations
- <git://holbrook.no/evm-tokenvote.git>
### Writer
A complement to ERC173, which allows definition of a class of
super-users for a contract.
A super-user address may perform *more* actions than a "normal" address,
aswell as *some* actions normally limited to the *contract owner*.
If an *contract owner* is defined, No super-user should be able to
perform actions that *contract owner* cannot perform.
Typically, only the *contract owner*, if it is defined, can add or
remove a super-user.
Some use-case examples of super-user actions include:
- Mint new tokens.
- Change the amount dispensed by the faucet.
- Edit access control lists.
#### ERC165 Interface identifier
abe1f1f5
#### Solidity interface definition
interface IWriter {
// A writer has been added by _executor
event WriterAdded(address _writer);
// A writer has been removed by _executor
event WriterDeleted(address _writer);
// Add a new writer to the contract.
function addWriter(address _writer) external returns (bool);
// Remove existing writer from the contract.
function deleteWriter(address _writer) external returns (bool);
// Check whether the given address is a writer.
function isWriter(address _writer) external view returns (bool);
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>

0
cic/__init__.py
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41
cic/runnable/abilist.py
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@ -1,41 +0,0 @@
# standard imports
import json
import sys
# external imports
import sha3
def main():
f = open(sys.argv[1], 'r')
o = json.load(f)
f.close()
ks = []
r = {}
for v in o:
if v['type'] != "function":
continue
name = ''
try:
name = v['name']
except KeyError:
continue
args = []
for vv in v['inputs']:
args.append(vv['type'])
sig = '{}({})'.format(name, ','.join(args))
h = sha3.keccak_256()
h.update(sig.encode('utf-8'))
z = h.digest()
k = z[:4].hex()
#ks.append(k)
r[k] = sig
ks = list(r.keys())
ks.sort()
for k in ks:
print("{}\t{}".format(k, r[k]))
if __name__ == '__main__':
main()

34
cic/runnable/calculate_eip165.py
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@ -1,34 +0,0 @@
# standard imports
import logging
import sys
# external imports
import sha3
logging.basicConfig(level=logging.WARNING)
#logging.basicConfig(level=logging.DEBUG)
logg = logging.getLogger()
def main():
if __name__ == '__main__':
f = open(sys.argv[1], 'r')
z = b''
for i in range(32):
z += b'\x00'
while True:
l = f.readline().rstrip()
if l == '':
break
logg.debug('line {}'.format(l))
h = sha3.keccak_256()
h.update(l.encode('utf-8'))
r = h.digest()
z = bytes([a ^ b for a, b in zip(r, z)])
logg.debug('{} -> {}'.format(r.hex(), z.hex()))
f.close()
print(z[:4].hex())
if __name__ == '__main__':
main()

16
cic/runnable/mergeabis.py
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@ -1,16 +0,0 @@
# standard imports
import sys
import json
def main():
merged = []
for a in sys.argv[1:]:
f = open(a, 'r')
j = json.load(f)
f.close()
merged += j
print(json.dumps(merged))
if __name__ == '__main__':
main()

136
cic/runnable/reduce_to_methods.py
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@ -1,136 +0,0 @@
import sys
import logging
import ply.lex as lex
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
tokens = (
'NUMBER',
# 'PLUS',
# 'MINUS',
# 'TIMES',
# 'DIVIDE',
'LPAREN',
'RPAREN',
)
methods = {}
contract = False
method = None
typ = None
function = False
signature = False
# Define a rule so we can track line numbers
def t_newline(t):
r'\n+'
t.lexer.lineno += len(t.value)
def t_comment(t):
r'//.+'
pass
def t_item(t):
r';'
global function, signature, method, typ
signature = False
function = False
method = None
typ = None
def t_contract(t):
r'(interface|contract).+\{'
global contract
if contract:
raise SyntaxError('this meagre parser will only handle one interface/contract definition per file')
contract = True
def t_pragma(t):
r'pragma.+'
pass
def t_function(t):
r'function'
global function, contract
if not contract:
raise SyntaxError('functions must be within inteface/contract definitions')
function = True
def t_LPAREN(t):
r'\('
global function, signature
if not function:
return
signature = True
def t_RPAREN(t):
r'\)'
global signature
signature = None
def t_WORD(t):
r'([\w\d]+)'
global method, typ, signature
if typ and not signature:
return
if function and method == None:
method = t.value
methods[method] = []
elif typ == None and signature:
typ = t.value
methods[method].append(typ)
def t_COMMA(t):
r','
global typ
typ = None
# Error handling rule
def t_error(t):
print("Illegal character '%s'" % t.value[0])
t.lexer.skip(1)
# A string containing ignored characters (spaces and tabs)
t_ignore = ' \t}'
def main():
# Build the lexer
lexer = lex.lex()
# Tokenize
f = open(sys.argv[1], 'r')
while True:
l = f.readline()
if not l:
break
lexer.input(l)
tok = lexer.token()
logg.debug('token {}'.format(tok))
for k in methods.keys():
print('{}({})'.format(k, ','.join(methods[k])))
if __name__ == '__main__':
main()

2
doc/texinfo/Makefile
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@ -1,5 +1,3 @@
all: all:
makeinfo --html index.texi makeinfo --html index.texi
readme:
makeinfo --docbook --no-split -o build/docbook.xml index.texi

26
doc/texinfo/accountsindex.sol.texi
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@ -9,17 +9,14 @@ The @code{entry} method is used to iterate the account list. The order of which
May optionally record time when account was added. May optionally record time when account was added.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/AccountsIndex.interface @include ../../build/AccountsIndex.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_AccountsIndex.texi @include ../../build/contract_AccountsIndex.texi
@item Reference implementation
@subsubsection Reference implementation
@uref{git://holbrook.no/eth-accounts-index.git,} (v0.5.1) @uref{git://holbrook.no/eth-accounts-index.git,} (v0.5.1)
@end table
@subsection Accounts Index Mutable @subsection Accounts Index Mutable
@ -29,14 +26,11 @@ Extends the functionality of @code{Accounts Index} to allow changes to the addre
Addresses may be @emph{added}, @emph{removed}, aswell as @emph{deactivated} and @emph{activated}. Deactivated accounts still count towards the @code{entryCount}. Addresses may be @emph{added}, @emph{removed}, aswell as @emph{deactivated} and @emph{activated}. Deactivated accounts still count towards the @code{entryCount}.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/AccountsIndexMutable.interface @include ../../build/AccountsIndexMutable.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_AccountsIndexMutable.texi @include ../../build/contract_AccountsIndexMutable.texi
@item Reference implementation
@subsubsection Reference implementation
@uref{git://holbrook.no/eth-accounts-index.git,} (v0.5.1) @uref{git://holbrook.no/eth-accounts-index.git,} (v0.5.1)
@end table

18
doc/texinfo/acl.sol.texi
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@ -1,18 +0,0 @@
@anchor{acl}
@subsection ACL
A simple Access Control List definition that returns true of false depending on whether an signatory (address) is allowed to operate in a given context.
@subsubsection ERC165 Interface identifier
@include ../../build/ACL.interface
@subsubsection Solidity interface definition
@include ../../build/contract_ACL.texi
@subsubsection Example implementation
@uref{git://holbrook.no/eth-accounts-index.git,}

13
doc/texinfo/burner.sol.texi
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@ -4,14 +4,11 @@ Attached to @code{ERC20} and @code{ERC721} tokens that may be @emph{burned}.
Implements the @code{burn(...)} part of @code{ERC5679} for interoperability. Implements the @code{burn(...)} part of @code{ERC5679} for interoperability.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Burner.interface @include ../../build/Burner.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Burner.texi @include ../../build/contract_Burner.texi
@item Example implementation
@subsubsection Example implementation
@uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git} @uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git}
@end table

13
doc/texinfo/chrono.sol.texi
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@ -5,14 +5,11 @@ Define a creation time for a resource.
Complements @code{ERC5007}. Complements @code{ERC5007}.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Chrono.interface @include ../../build/Chrono.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Chrono.texi @include ../../build/contract_Chrono.texi
@item Example implementation
@subsubsection Example implementation
@uref{https://git.defalsify.org/eth-erc721} (BadgeToken contract) @uref{https://git.defalsify.org/eth-erc721} (BadgeToken contract)
@end table

13
doc/texinfo/declarator.sol.texi
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@ -10,14 +10,11 @@ Claims may be made with or without topics. A missing topic is synonymous with a
Any number of claims can be made about an address under any number of topics. All claims must be stored, and returned in the order which they were added. Any number of claims can be made about an address under any number of topics. All claims must be stored, and returned in the order which they were added.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Declarator.interface @include ../../build/Declarator.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Declarator.texi @include ../../build/contract_Declarator.texi
@item Reference implementation
@subsubsection Reference implementation
@uref{git://holbrook.no/eth-address-index.git,} @uref{git://holbrook.no/eth-address-index.git,}
@end table

13
doc/texinfo/digest.sol.texi
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@ -7,14 +7,11 @@ Primary use-case is the abstraction of self-describing @uref{https://multiformat
A default encoding @emph{must} always be defined, and the encoding of a valid digest @emph{must} succeed with the default encoding. A default encoding @emph{must} always be defined, and the encoding of a valid digest @emph{must} succeed with the default encoding.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Digest.interface @include ../../build/Digest.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Digest.texi @include ../../build/contract_Digest.texi
@item Example implementation
@subsubsection Example implementation
@uref{git://holbrook.no/eth-event-msg.git} @uref{git://holbrook.no/eth-event-msg.git}
@end table

15
doc/texinfo/expire.sol.texi
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@ -1,18 +1,15 @@
@subsection Expire @subsection Expire
Defines an expiry time after which token balances and supply @emph{cannot change}. Defines an expiry time after which token balances or supply @emph{cannot change}.
A contract defining an expiry @emph{must not} allow changing the expiration time to a time in the past. A contract defining an expiry @emph{must not} allow changing the expiration time to a time in the past.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Expire.interface @include ../../build/Expire.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Expire.texi @include ../../build/contract_Expire.texi
@item Example implementation
@subsubsection Example implementation
@uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git} @uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git}
@end table

13
doc/texinfo/faucet.sol.texi
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@ -24,19 +24,16 @@ The contract has sufficient token funds to dispense the current defined amount t
The @emph{check(address)} contract call @emph{must} evaluate all four criteria, and @emph{must} return @code{false} if any of the criteria are not met. The @emph{check(address)} contract call @emph{must} evaluate all four criteria, and @emph{must} return @code{false} if any of the criteria are not met.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Faucet.interface @include ../../build/Faucet.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Faucet.texi @include ../../build/contract_Faucet.texi
@item Reference implementations
@subsubsection Reference implementations
@itemize @itemize
@item @item
@uref{git://holbrook.no/erc20-faucet.git,} @uref{git://holbrook.no/erc20-faucet.git,}
@item @item
@uref{git://holbrook.no/eth-faucet.git,} @uref{git://holbrook.no/eth-faucet.git,}
@end itemize @end itemize
@end table

78
doc/texinfo/index/Smart-contract-interfaces.html
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@ -1,6 +1,6 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html> <html>
<!-- Created by GNU Texinfo 6.8, https://www.gnu.org/software/texinfo/ --> <!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ -->
<head> <head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Smart contract interfaces (Untitled Document)</title> <title>Smart contract interfaces (Untitled Document)</title>
@ -10,16 +10,14 @@
<meta name="resource-type" content="document"> <meta name="resource-type" content="document">
<meta name="distribution" content="global"> <meta name="distribution" content="global">
<meta name="Generator" content="makeinfo"> <meta name="Generator" content="makeinfo">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link href="#Smart-contract-interfaces" rel="start" title="Smart contract interfaces"> <link href="#Smart-contract-interfaces" rel="start" title="Smart contract interfaces">
<style type="text/css"> <style type="text/css">
<!-- <!--
a.copiable-anchor {visibility: hidden; text-decoration: none; line-height: 0em}
a.summary-letter {text-decoration: none} a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em} blockquote.indentedblock {margin-right: 0em}
div.display {margin-left: 3.2em} div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em} div.example {margin-left: 3.2em}
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--> -->
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@ -37,77 +34,45 @@ ul.no-bullet {list-style: none}
</head> </head>
<body lang="en"> <body lang="en">
<div class="chapter" id="Smart-contract-interfaces"> <span id="Smart-contract-interfaces"></span><span id="Smart-contract-interfaces-1"></span><h2 class="chapter">1 Smart contract interfaces</h2>
<span id="Smart-contract-interfaces-1"></span><h2 class="chapter">1 Smart contract interfaces</h2>
<ul class="section-toc"> <span id="Smart-Contracts-in-the-CIC-Network"></span><h3 class="section">1.1 Smart Contracts in the CIC Network</h3>
<li><a href="#Smart-Contracts-in-the-CIC-Network" accesskey="1">Smart Contracts in the CIC Network</a></li>
</ul>
<div class="section" id="Smart-Contracts-in-the-CIC-Network">
<h3 class="section">1.1 Smart Contracts in the CIC Network</h3>
<ul class="section-toc"> <span id="Technology"></span><h4 class="subsection">1.1.1 Technology</h4>
<li><a href="#Technology" accesskey="1">Technology</a></li>
<li><a href="#The-registry-contract" accesskey="2">The registry contract</a></li>
<li><a href="#Auxiliary-contracts" accesskey="3">Auxiliary contracts</a></li>
<li><a href="#Contract-interfaces" accesskey="4">Contract interfaces</a></li>
</ul>
<div class="subsection" id="Technology">
<h4 class="subsection">1.1.1 Technology</h4>
<p>The long-term aim of the CIC network is to be agnostic of consensus engines. However, since we have to start <em>somewhere</em>, the current state of development only deals with Smart Contracts on the (Ethereum Virtual Machine (EVM). <p>The long-term aim of the CIC network is to be agnostic of consensus engines. However, since we have to start <em>somewhere</em>, the current state of development only deals with Smart Contracts on the (Ethereum Virtual Machine (EVM).
</p> </p>
</div> <span id="The-registry-contract"></span><h4 class="subsection">1.1.2 The registry contract</h4>
<div class="subsection" id="The-registry-contract">
<h4 class="subsection">1.1.2 The registry contract</h4>
<p>The CICRegistry contract defines the entry-point to the entire CIC network. All other CIC network resources can be discovered through this contract. <p>The CICRegistry contract defines the entry-point to the entire CIC network. All other CIC network resources can be discovered through this contract.
</p> </p>
<p>Its implementation is contained in the <samp>cic-registry</samp> repository. Details about it are documented further in that section. <p>Its implementation is contained in the <samp>cic-registry</samp> repository. Details about it are documented further in that section.
</p> </p>
</div> <span id="Auxiliary-contracts"></span><h4 class="subsection">1.1.3 Auxiliary contracts</h4>
<div class="subsection" id="Auxiliary-contracts">
<h4 class="subsection">1.1.3 Auxiliary contracts</h4>
<p>All other Smart Contracts in the network other than CICRegistry are essentially optional, and each applies <em>at least one</em> the interfaces defined in the <code>cic-contracts</code> repository. <p>All other Smart Contracts in the network other than CICRegistry are essentially optional, and each applies <em>at least one</em> the interfaces defined in the <code>cic-contracts</code> repository.
</p> </p>
</div> <span id="Contract-interfaces"></span><h4 class="subsection">1.1.4 Contract interfaces</h4>
<div class="subsection" id="Contract-interfaces">
<h4 class="subsection">1.1.4 Contract interfaces</h4>
<p>All contracts interfaces also implement the <strong>EIP165</strong> Standard Interface Detection. <p>All contracts interfaces also implement the <strong>EIP165</strong> Standard Interface Detection.
</p> </p>
<ul class="section-toc"> <span id="Registry"></span><h4 class="subsubsection">1.1.4.1 Registry</h4>
<li><a href="#Registry" accesskey="1">Registry</a></li>
<li><a href="#Registry-Client" accesskey="2">Registry Client</a></li>
<li><a href="#Faucet" accesskey="3">Faucet</a></li>
<li><a href="#Transfer-approval" accesskey="4">Transfer approval</a></li>
<li><a href="#Declarator" accesskey="5">Declarator</a></li>
<li><a href="#Address-Index" accesskey="6">Address Index</a></li>
<li><a href="#DEX-Index" accesskey="7">DEX Index</a></li>
</ul>
<div class="subsubsection" id="Registry">
<h4 class="subsubsection">1.1.4.1 Registry</h4>
<p>A key-value store, which resolves arbitrary 32-byte pointers to Ethereum addresses. Typically, this is used to resolve an address from a well-known identifier, either as a UTF-8 value or a 256-bit hash. <p>A key-value store, which resolves arbitrary 32-byte pointers to Ethereum addresses. Typically, this is used to resolve an address from a well-known identifier, either as a UTF-8 value or a 256-bit hash.
</p> </p>
<p>It also provides numerical index access to all registered values in order of insertion. <p>It also provides numerical index access to all registered values in order of insertion.
</p> </p>
</div> <span id="Registry-Client"></span><h4 class="subsubsection">1.1.4.2 Registry Client</h4>
<div class="subsubsection" id="Registry-Client">
<h4 class="subsubsection">1.1.4.2 Registry Client</h4>
<p>A subset of the <code>Registry</code> interface, which defines only the non-transactional methods of the contract. The <code>Registry Client</code> interface is implemented by the <code>CICRegistry</code> contract. <p>A subset of the <code>Registry</code> interface, which defines only the non-transactional methods of the contract. The <code>Registry Client</code> interface is implemented by the <code>CICRegistry</code> contract.
</p> </p>
</div> <span id="Faucet"></span><h4 class="subsubsection">1.1.4.3 Faucet</h4>
<div class="subsubsection" id="Faucet">
<h4 class="subsubsection">1.1.4.3 Faucet</h4>
<p>Enables disbursement of a set amount of tokens to a requesting address. <p>Enables disbursement of a set amount of tokens to a requesting address.
</p> </p>
@ -116,9 +81,7 @@ ul.no-bullet {list-style: none}
<p>Can be implemented as a periodic or a one-time service per account. <p>Can be implemented as a periodic or a one-time service per account.
</p> </p>
</div> <span id="Transfer-approval"></span><h4 class="subsubsection">1.1.4.4 Transfer approval</h4>
<div class="subsubsection" id="Transfer-approval">
<h4 class="subsubsection">1.1.4.4 Transfer approval</h4>
<p>Enables a third-party approval to spend an ERC20 token allowance. <p>Enables a third-party approval to spend an ERC20 token allowance.
</p> </p>
@ -127,9 +90,7 @@ ul.no-bullet {list-style: none}
<p>The contract allows the third-party address to either allow or reject the transfer. <p>The contract allows the third-party address to either allow or reject the transfer.
</p> </p>
</div> <span id="Declarator"></span><h4 class="subsubsection">1.1.4.5 Declarator</h4>
<div class="subsubsection" id="Declarator">
<h4 class="subsubsection">1.1.4.5 Declarator</h4>
<p>Stores one or more 32-byte entries as a description of an Ethereum address, <em>signed</em> by another Ethereum address. <p>Stores one or more 32-byte entries as a description of an Ethereum address, <em>signed</em> by another Ethereum address.
</p> </p>
@ -140,22 +101,15 @@ ul.no-bullet {list-style: none}
<p>Entries typically are text strings or content hashes. <p>Entries typically are text strings or content hashes.
</p> </p>
</div> <span id="Address-Index"></span><h4 class="subsubsection">1.1.4.6 Address Index</h4>
<div class="subsubsection" id="Address-Index">
<h4 class="subsubsection">1.1.4.6 Address Index</h4>
<p>A simple append-only list of addresses. Used to check whether an address is part of a particular group. <p>A simple append-only list of addresses. Used to check whether an address is part of a particular group.
</p> </p>
</div> <span id="DEX-Index"></span><h4 class="subsubsection">1.1.4.7 DEX Index</h4>
<div class="subsubsection" id="DEX-Index">
<h4 class="subsubsection">1.1.4.7 DEX Index</h4>
<p>Methods required to convert between tokens. <p>Methods required to convert between tokens.
</p><hr></div> </p><hr>
</div>
</div>
</div>

15
doc/texinfo/locator.sol.texi
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@ -8,20 +8,17 @@ It @emph{must} be possible to refer to all off-chain resources directly by the c
Furthermore, it @emph{should} be possible to refer to a resource by a fully-qualified location on the web or an overlay network (e.g. tor). Furthermore, it @emph{should} be possible to refer to a resource by a fully-qualified location on the web or an overlay network (e.g. tor).
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Locator.interface @include ../../build/Locator.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Locator.texi @include ../../build/contract_Locator.texi
@item Example implementation
@subsubsection Example implementation
@uref{git://holbrook.no/eth-event-msg.git} @uref{git://holbrook.no/eth-event-msg.git}
@end table
@subsubsection Expressing locators in terms of numeric token id @subsubsection Expressing locators in terms of numetic token id
Given the numeric token id @code{1234567890987654321} (@code{0x112210f4b16c1cb1} hex), and a base url @code{https://contentgateway.grassecon.net}, the result of the methods may be as follows: Given the numeric token id @code{1234567890987654321} (@code{0x112210f4b16c1cb1} hex), and a base url @code{https://contentgateway.grassecon.net}, the result of the methods may be as follows:

13
doc/texinfo/minter.sol.texi
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@ -4,14 +4,11 @@ Attached to @code{ERC20} and @code{ERC721} tokens that may be minted.
Implements the @code{mint(...)} and @code{safeMint(...)} parts of @code{ERC5679} for interoperability. Implements the @code{mint(...)} and @code{safeMint(...)} parts of @code{ERC5679} for interoperability.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Minter.interface @include ../../build/Minter.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Minter.texi @include ../../build/contract_Minter.texi
@item Example implementation
@subsubsection Example implementation
@uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git} @uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git}
@end table

13
doc/texinfo/msg.sol.texi
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@ -7,14 +7,11 @@ The reference may or may not be mutable.
The interface complements @code{Locator} and @code{MultiHash} to generate locators for how to resolve the reference. The interface complements @code{Locator} and @code{MultiHash} to generate locators for how to resolve the reference.
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Msg.interface @include ../../build/Msg.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Msg.texi @include ../../build/contract_Msg.texi
@item Example implementation
@subsubsection Example implementation
@uref{git://holbrook.no/eth-event-msg.git} @uref{git://holbrook.no/eth-event-msg.git}
@end table

28
doc/texinfo/overview.texi
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@ -8,12 +8,9 @@
CIC smart contracts are implemented using the @emph{solidity} programming language for the (Ethereum Virtual Machine (EVM). CIC smart contracts are implemented using the @emph{solidity} programming language for the (Ethereum Virtual Machine (EVM).
@section Adopted standards @section Inherited ERC definitions
@subsection Signing @subsection Direct use
@subsection ERC - Direct use
The following well-known solidity interfaces are used directly. The following well-known solidity interfaces are used directly.
@ -26,10 +23,6 @@ The following well-known solidity interfaces are used directly.
@item @item
@uref{https://eips.ethereum.org/EIPS/eip-173, ERC173 - Contract Ownership Standard} @uref{https://eips.ethereum.org/EIPS/eip-173, ERC173 - Contract Ownership Standard}
@item @item
@uref{https://eips.ethereum.org/EIPS/eip-191, ERC191 - Signed Data Standard}
@item
@uref{https://eips.ethereum.org/EIPS/eip-712, ERC712 - Typed structured data hashing and signing}
@item
@uref{https://eips.ethereum.org/EIPS/eip-721, ERC721 - Non-Fungible Token Standard} @uref{https://eips.ethereum.org/EIPS/eip-721, ERC721 - Non-Fungible Token Standard}
@item @item
@uref{https://eips.ethereum.org/EIPS/eip-5007, ERC5007 - Time NFT (EIP-721 Time Extension)} @uref{https://eips.ethereum.org/EIPS/eip-5007, ERC5007 - Time NFT (EIP-721 Time Extension)}
@ -38,11 +31,10 @@ The following well-known solidity interfaces are used directly.
@end itemize @end itemize
@subsection ERCs Partial use @subsection Partial use
The following well-known solidity interfaces are partially implemented in CIC native interfaces. The following well-known solidity interfaces are partially implemented in CIC native interfaces.
@itemize @dfn @itemize @dfn
@item @item
@uref{https://eips.ethereum.org/EIPS/eip-5679, ERC5679 - Token Minting and Burning} (See @code{Minter}, @code{Burner}) @uref{https://eips.ethereum.org/EIPS/eip-5679, ERC5679 - Token Minting and Burning} (See @code{Minter}, @code{Burner})
@end itemize @end itemize
@ -50,8 +42,6 @@ The following well-known solidity interfaces are partially implemented in CIC na
@section Native interfaces @section Native interfaces
@include acl.sol.texi
@include accountsindex.sol.texi @include accountsindex.sol.texi
@include burner.sol.texi @include burner.sol.texi
@ -76,16 +66,4 @@ The following well-known solidity interfaces are partially implemented in CIC na
@include seal.sol.texi @include seal.sol.texi
@include throttle.sol.texi
@include tokenlimit.sol.texi
@include tokenquote.sol.texi
@include tokenratechange.sol.texi
@include tokenswap.sol.texi
@include tokenvote.sol.texi
@include writer.sol.texi @include writer.sol.texi

17
doc/texinfo/registry.sol.texi
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@ -11,18 +11,13 @@ Entry-point to discover all relevant contracts of CIC networks.
Unique (ERC20) token symbol resolver. Unique (ERC20) token symbol resolver.
@end enumerate @end enumerate
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/RegistryClient.interface @include ../../build/RegistryClient.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_RegistryClient.texi @include ../../build/contract_RegistryClient.texi
@item Contract registry implementation
@subsubsection Contract registry implementation
@uref{git://holbrook.no/eth-contract-registry.git,} @uref{git://holbrook.no/eth-contract-registry.git,}
@item Token index implementation
@subsubsection Token index implementation
@uref{git://holbrook.no/eth-contract-registry.git,} @uref{git://holbrook.no/eth-contract-registry.git,}
@end table

13
doc/texinfo/seal.sol.texi
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@ -21,14 +21,11 @@ Allow ownership of a contract to be transferred
The expiry time of a token (see @code{Expire}) The expiry time of a token (see @code{Expire})
@end itemize @end itemize
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Seal.interface @include ../../build/Seal.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Seal.texi @include ../../build/contract_Seal.texi
@item Example implementation
@subsubsection Example implementation
@uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git} @uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git}
@end table

22
doc/texinfo/throttle.sol.texi
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@ -1,22 +0,0 @@
@subsection Throttle
An backend contract to limit access to a resource by time.
The smart contract managing the resource calls @code{have(address)} on this contract to check if it can be made use of at the current point in time. This also implements @ref{acl, ACL}.
When the resource is made use of, it calls @code{poke(address)} method to register when it has been made use of.
The @code{next(address)} method returns the timestamp from which the resource may be used again by the given address. The implementer is permitted to change the value at any time.
@subsubsection ERC165 Interface identifier
@include ../../build/Throttle.interface
@subsubsection Solidity interface definition
@include ../../build/contract_Throttle.texi
@subsubsection Reference implementation
@uref{git://holbrook.no/eth-faucet.git,} (PeriodSimple contract)

22
doc/texinfo/tokenlimit.sol.texi
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@ -1,22 +0,0 @@
@subsection TokenLimit
Define limits of value amounts of tokens that individual addresses can hold.
Limits are inclusive; a limit for 42 means transfer resulting in a token balance @emph{higher} than 42 should be rejected.
A return value of 0 indicates that the token is categorically not accepted by the holder.
@subsubsection ERC165 Interface identifier
@include ../../build/TokenLimit.interface
@subsubsection Solidity interface definition
@include ../../build/contract_TokenLimit.texi
@subsubsection Reference implementations
@itemize
@item
@uref{git://holbrook.no/erc20-limiter.git,}
@end itemize

20
doc/texinfo/tokenquote.sol.texi
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@ -1,20 +0,0 @@
@subsection TokenQuote
Quote an output token value for a given value of input tokens.
Both input and output value is denominated in the smallest available unit of respective tokens.
@subsubsection ERC165 Interface identifier
@include ../../build/TokenQuote.interface
@subsubsection Solidity interface definition
@include ../../build/contract_TokenQuote.texi
@subsubsection Example implementation
@itemize
@item
@uref{git://holbrook.no/erc20-limiter.git,}
@end itemize

22
doc/texinfo/tokenratechange.sol.texi
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@ -1,22 +0,0 @@
@subsection TokenRateChange
Enables detection of properties for CIC tokens that change value over time, e.g. through demurrage.
It allows defining the granularity of the rate of change, aswell as a frequency for which the rate of change is applied.
A method for canonical value change calculations is also provided.
@subsubsection ERC165 Interface identifier
@include ../../build/TokenRateChange.interface
@subsubsection Solidity interface definition
@include ../../build/contract_TokenRateChange.texi
@subsubsection Reference implementations
@itemize
@item
@uref{git://holbrook.no/erc20-demurrage-token.git,}
@end itemize

40
doc/texinfo/tokenswap.sol.texi
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@ -1,40 +0,0 @@
@subsection TokenSwap
Token swap interface that can fit token escrow purposes aswell as token swap contracts.
Optionally may define a @code{defaultToken}, that may among other things be used for @code{withdraw()} calls without an @code{inToken}.
An explicit @emph{ERC20 approval} of the balance to be transacted will usually be required for the implementing contract.
If the value 0 is passed as argument to @code{deposit} or @code{withdraw}, implementers can choose one of two possible outcomes:
@itemize
@item Noop. 0 @emph{must} be returned.
@item Use @emph{balance} or the max available @emph{allowance}. The actual (spent) value @emph{must} be returned.
@end itemize
@subsubsection ERC165 Interface identifier
@include ../../build/TokenSwap.interface
@subsubsection Solidity interface definition
@include ../../build/contract_TokenSwap.texi
@subsubsection Reference implementations
@itemize
@item
@uref{git://holbrook.no/erc20-pool.git,}
@end itemize
@subsubsection Handling deposits
The implementation is free to decide whether deposits can be recovered directly, or if they will be locked in the smart contract - temporarily or permanently.
For the duration deposits are locked, they are part of the smart contract's swap liquidity. During this time, locked deposits may only be withdrawn in exchange for other tokens accepted by the contract.
Deposits that are not locked should be withdrawable using the @code{withdraw(address,uint256)} (@code{0xf3fef3a3}) method signature.
Of course, as with most swap contracts, the tokens available for withdrawal by the holder may not necessarily match the tokens that were deposited by the holder.

21
doc/texinfo/tokenvend.sol.texi
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@ -1,21 +0,0 @@
@subsection TokenVend
This interface defines the mechanism for which a specific ERC20 token may be exchanged for a different ERC20 token.
A typical use-case is generation of voting tokens based on a momentary voucher balance. This is especially useful if the original ERC20 token is subject to decay (demurrage).
The tokens used for exchange @strong{SHOULD} be locked for the full duration of holding the vended tokens.
The withdrawal function may or may not allow partial withdrawals.
@table @dfn
@item ERC165 Interface identifier
@include ../../build/TokenVend.interface
@item Solidity interface definition
@include ../../build/contract_TokenVend.texi
@item Reference implementations
@itemize
@item
@uref{git://holbrook.no/erc20-vend.git,}
@end itemize
@end table

25
doc/texinfo/tokenvote.sol.texi
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@ -1,25 +0,0 @@
@anchor{token_vote}
@subsection TokenVote
Execute elections with granular ERC20 token votes.
A proposal submitted for vote may or may not contain multiple options. If multiple options are available, an ERC20 token holder may distribute its vote among the options with the granularity of the token balance.
Voted tokens @strong{SHOULD} be locked until the voting has finalized.
Finalization of voting should be callable by anyone.
@subsubsection ERC165 Interface identifier
@include ../../build/TokenVote.interface
@subsubsection Solidity interface definition
@include ../../build/contract_TokenVote.texi
@subsubsection Reference implementations
@itemize
@item
@uref{git://holbrook.no/evm-tokenvote.git,}
@end itemize

17
doc/texinfo/writer.sol.texi
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@ -4,9 +4,9 @@ A complement to ERC173, which allows definition of a class of super-users for a
A super-user address may perform @emph{more} actions than a "normal" address, aswell as @emph{some} actions normally limited to the @emph{contract owner}. A super-user address may perform @emph{more} actions than a "normal" address, aswell as @emph{some} actions normally limited to the @emph{contract owner}.
If an @emph{contract owner} is defined, No super-user should be able to perform actions that @emph{contract owner} cannot perform. No super-user should be able to perform actions that @emph{contract owner} cannot perform.
Typically, only the @emph{contract owner}, if it is defined, can add or remove a super-user. Typically, only the @emph{contract owner} can add or remove a super-user.
Some use-case examples of super-user actions include: Some use-case examples of super-user actions include:
@ -19,14 +19,11 @@ Change the amount dispensed by the faucet.
Edit access control lists. Edit access control lists.
@end itemize @end itemize
@subsubsection ERC165 Interface identifier @table @dfn
@item ERC165 Interface identifier
@include ../../build/Writer.interface @include ../../build/Writer.interface
@item Solidity interface definition
@subsubsection Solidity interface definition
@include ../../build/contract_Writer.texi @include ../../build/contract_Writer.texi
@item Example implementation
@subsubsection Example implementation
@uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git} @uref{https://git.grassecon.net/cicnet/erc20-demurrage-token.git}
@end table

235
python-contract-interfaces/LICENSE
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@ -1,235 +0,0 @@
GNU AFFERO GENERAL PUBLIC LICENSE
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When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
Developers that use our General Public Licenses protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License which gives you legal permission to copy, distribute and/or modify the software.
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include *requirements.txt solidity/* LICENSE README* cic_contracts/unittest/solidity/* cic_contracts/data/*

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INPUTS = $(wildcard cic_contracts/unittest/solidity/*.sol)
OUTPUTS = $(patsubst %.sol, %.bin, $(INPUTS))
all: outs package
.SUFFIXES: .sol .bin
solidity:
.sol.bin:
solc $(basename $@).sol --evm-version=byzantium --bin | awk 'NR>3' > $@
truncate -s -1 $@
outs: $(OUTPUTS)
package:
python setup.py sdist

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# Smart contract interfaces
## Technology
CIC smart contracts are implemented using the *solidity* programming
language for the (Ethereum Virtual Machine (EVM).
## Adopted standards
### Signing
### ERC - Direct use
The following well-known solidity interfaces are used directly.
- [ERC20 - Token Standard](https://eips.ethereum.org/EIPS/eip-20)
- [ERC165 - Standard Interface
Detection](https://eips.ethereum.org/EIPS/eip-165)
- [ERC173 - Contract Ownership
Standard](https://eips.ethereum.org/EIPS/eip-173)
- [ERC191 - Signed Data
Standard](https://eips.ethereum.org/EIPS/eip-191)
- [ERC712 - Typed structured data hashing and
signing](https://eips.ethereum.org/EIPS/eip-712)
- [ERC721 - Non-Fungible Token
Standard](https://eips.ethereum.org/EIPS/eip-721)
- [ERC5007 - Time NFT (EIP-721 Time
Extension)](https://eips.ethereum.org/EIPS/eip-5007)
- [ERC5192 - Minimal Soulbound
NFTs](https://eips.ethereum.org/EIPS/eip-5192)
### ERCs Partial use
The following well-known solidity interfaces are partially implemented
in CIC native interfaces.
- [ERC5679 - Token Minting and
Burning](https://eips.ethereum.org/EIPS/eip-5679) (See `Minter`,
`Burner`)
## Native interfaces
### ACL
A simple Access Control List definition that returns true of false
depending on whether an signatory (address) is allowed to operate in a
given context.
#### ERC165 Interface identifier
3ef25013
#### Solidity interface definition
interface IACL {
// Returns true if the address has permission to operate in the given context.
function have(address _address) external view returns(bool);
}
#### Example implementation
<git://holbrook.no/eth-accounts-index.git>
### Accounts Index
Append-only list of addresses. Typically used for access control lists.
Addresses may be *added*, *removed*, aswell as *deactivated* and
*activated*. Deactivated accounts still count towards the `entryCount`.
The `entry` method is used to iterate the account list. The order of
which accounts are returned is not guaranteed. Any returned value
matching `address(0x00)` should be skipped, and not counted towards
`entryCount`.
May optionally record time when account was added.
#### ERC165 Interface identifier
b7bca625
#### Solidity interface definition
interface IAccountsIndex {
// Address added to store, index in array.
event AddressAdded(uint256 indexed _idx, address _account);
// Return number of entries in index.
function entryCount() external view returns (uint256);
// Return entry at the spceificed index.
// Will revert if index is beyond array length.
// An entry result of 0 means the entry should be skipped, and not count towards entry count.
function entry(uint256) external view returns (address);
// Add an entry to the index. Incresases the entry count.
function add(address) external returns (bool);
// Verify that the entry exists in the index.
// Implements ACL
function have(address) external view returns (bool);
// Retrieve the timestamp when account was added.
// If time is not being tracked, a value of 0 should be returned.
function time(address) external view returns (uint256);
}
#### Reference implementation
<git://holbrook.no/eth-accounts-index.git> (v0.5.1)
### Accounts Index Mutable
Extends the functionality of `Accounts Index` to allow changes to the
address list.
Addresses may be *added*, *removed*, aswell as *deactivated* and
*activated*. Deactivated accounts still count towards the `entryCount`.
#### ERC165 Interface identifier
9479f0ae
#### Solidity interface definition
interface IAccountsIndexMutable {
// Active status of address changed, and by whom changed.
event AddressActive(address indexed _account, bool _active);
// Address removed from store, and by whom removed.
event AddressRemoved(address _account);
// Remove an entry from the index. Reduces the entry count.
function remove(address) external returns (bool);
// Deactivate account but keep in index. Does not affect entry count.
function deactivate(address) external returns (bool);
// Activate previously deactivated account. Does not affect entry count.
function activate(address) external returns (bool);
// Check if account exists and is active;
function isActive(address) external view returns (bool);
}
#### Reference implementation
<git://holbrook.no/eth-accounts-index.git> (v0.5.1)
### Burner
Attached to `ERC20` and `ERC721` tokens that may be *burned*.
Implements the `burn(...)` part of `ERC5679` for interoperability.
#### ERC165 Interface identifier
b1110c1b
#### Solidity interface definition
interface IBurner {
// Token(s) successfully burned; by who and how much.
event Burn(address indexed _burner, uint256 _burned);
// Satisfies ERC 5679
function burn(address _from, uint256 _amount, bytes calldata _data) external;
// Burn given amount of tokens held by signer.
function burn(uint256 _amount) external returns (bool);
// Burn all tokens held by signer.
// Returns the amount of tokens burned.
function burn() external returns (uint256);
// Total amount of tokens that have been burned.
function totalBurned() external returns (uint256);
// Total amount of tokens ever minted.
// If totalSupply() is available (ERC20, ERC721 Enumerable), this equals totalSupply() + totalBurned().
function totalMinted() external returns (uint256);
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>
### Chrono
Define a creation time for a resource.
Complements `ERC5007`.
#### ERC165 Interface identifier
4db1ccd4
#### Solidity interface definition
interface IChrono {
// Returns the timestamp of when a resource corresponding to _idx was first created.
// int64 chosen as return value for simpler interoperability with ERC5007.
function createTime(uint256 _idx) external returns(int64);
}
#### Example implementation
<https://git.defalsify.org/eth-erc721> (BadgeToken contract)
### Declarator
Permissionless store of signed claims made by an address about other
addresses, or addresses about themselves.
It is used to declare or respond to certifications of vouchers, NFT,
voucher members.
Addresses may be Externally Owned Accounts or smart contracts.
Claims may be made with or without topics. A missing topic is synonymous
with a topic value of `bytes32(0x00)`.
Any number of claims can be made about an address under any number of
topics. All claims must be stored, and returned in the order which they
were added.
#### ERC165 Interface identifier
21b7493b
#### Solidity interface definition
interface IDeclarator {
event DeclarationAdded(address indexed _declarator, address indexed _subject, bytes32 indexed _topic, bytes32 _proof);
// Get all declarations for a subject (without topic) signed by a declarator
function declaration(address _declarator, address _subject) external view returns ( bytes32[] memory );
// Get all declarations for a subject for the given topic signed by a declarator
function declaration(address _declarator, address _subject, bytes32 _topic) external view returns ( bytes32[] memory );
// Get number of declarations the declarator has ever signed
function declarationCount(address _declarator) external view returns ( uint256 );
// Get the subject of a declarator's declarations at the specific index
function declarationAddressAt(address _declarator, uint256 _idx) external view returns ( address );
// Add a declaration for the subject
function addDeclaration(address _subject, bytes32 _proof) external returns ( bool );
// Add a declaration with topic for the subject
function addDeclaration(address _subject, bytes32 _proof, bytes32 _topic) external returns ( bool );
// Get the declarator that signed a declaration at the specificed index for a subject
function declaratorAddressAt(address _subject, uint256 _idx) external view returns ( address );
// Get the number of declarators that have signed for a subject
function declaratorCount(address _subject) external view returns ( uint256 );
}
#### Reference implementation
<git://holbrook.no/eth-address-index.git>
### Digest
Allows encoding of digests according to a specific encoding scheme.
Primary use-case is the abstraction of self-describing
[Multhash](https://multiformats.io/multihash/) encoding.
A default encoding *must* always be defined, and the encoding of a valid
digest *must* succeed with the default encoding.
#### ERC165 Interface identifier
982ab05d
#### Solidity interface definition
interface IDigest {
// Returns the default digest encoding used by the contract instance.
function defaultDigestEncoding() external view returns (uint256 _encoding);
// Check if the given encoding has been implemented in the contract instance.
function haveDigestEncoding(uint256 _codec) external view returns(bool);
// Verify and encode the given digest for a specific hashing algorithm.
// Returns a zero-length byte array if digest is invalid.
// Must succeed if called with the defaultDigestEncoding and a valid digest.
function encodeDigest(bytes memory _data, uint256 _encoding) external view returns (bytes memory);
// Encodes the digest using the default digest encoding.
// Returns a zero-length byte array if digest is invalid.
// Must succeed with a valid digest.
function encodeDigest(bytes memory _data) external view returns (bytes memory);
}
#### Example implementation
<git://holbrook.no/eth-event-msg.git>
### Expire
Defines an expiry time after which token balances and supply *cannot
change*.
A contract defining an expiry *must not* allow changing the expiration
time to a time in the past.
#### ERC165 Interface identifier
841a0e94
#### Solidity interface definition
interface IExpire {
// Contract has expired.
event Expired(uint256 _timestamp);
// Expiry time has changed.
event ExpiryChange(uint256 indexed _oldTimestamp, uint256 _newTimestamp);
// The current expiration timestamp.
function expires() external returns (uint256);
// Check expiry and apply expiration if expired.
// Return values must be:
// 0: not yet expired.
// 1: already expired.
// >1: expiry executed.
function applyExpiry() external returns(uint8);
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>
### Faucet
Used for dispensing tokens to any address.
It can be used for gas tokens and *ERC20* alike.
The interface is the same whether the faucet is dispensing from existing
balance or minting new tokens.
The value dispersed *must* be the same for all addresses.
In general, four criteria are expected to exist in any combination for
limiting access to the faucet:
Time
A recipient may only use the faucet again after some time has passed.
Balance threshold
A recipient may only use the faucet after its balance is below a certain
amount.
Membership
A recipient may only use the faucet if it has been added to an access
control list.
Capacity
The contract has sufficient token funds to dispense the current defined
amount to dispense.
The *check(address)* contract call *must* evaluate all four criteria,
and *must* return `false` if any of the criteria are not met.
#### ERC165 Interface identifier
1a3ac634
#### Solidity interface definition
interface IFaucet {
// Tokens were given to an address
event Give(address indexed _recipient, address indexed _token, uint256 _value);
// The amount that the faucet disperses has changed
event FaucetAmountChange(uint256 _value);
// Address of token the faucet represents
// The faucet will return gas tokens with the zero-address is returned.
function token() external returns (address);
// Amount of tokens the faucet gives out
function tokenAmount() external returns (uint256);
// Give tokens to the given recipient. Returns amount of tokens given.
function giveTo(address _recipient) external returns (uint256);
// Give tokens to yourself. Returns amount of tokens given.
function gimme() external returns (uint256);
// Check if faucet may be used in the current contract state by _recipient
function check(address _recipient) external view returns (bool);
// Returns timestamp when faucet may be used again by _recipient
// If 0 is returned, the address has not yet been used.
// A return value of max(uint256) indicates that the faucet may not be used again.
function nextTime(address _recipient) external returns (uint256);
// Returns the token balance under which faucet may be used again by _recipient
// A return value of max(uint256) indicates that the faucet may be used regardless
// of the token balance of _recipient
function nextBalance(address _recipient) external returns (uint256);
}
#### Reference implementations
- <git://holbrook.no/erc20-faucet.git>
- <git://holbrook.no/eth-faucet.git>
### Locator
This interface supports `ERC721 Metadata`, in particular the
`tokenURI(uint256)` call.
Off-chain resources in the CIC network *must* be defined in terms of
content addressed strings.
It *must* be possible to refer to all off-chain resources directly by
the content address.
Furthermore, it *should* be possible to refer to a resource by a
fully-qualified location on the web or an overlay network (e.g. tor).
#### ERC165 Interface identifier
ed75b333
#### Solidity interface definition
interface ILocator {
// URI that may or may not point to a specific resource location.
function toURI(bytes memory _data) external view returns (string memory);
// URL pointing to a specific resource location.
function toURL(bytes memory _data) external view returns(string memory);
}
#### Example implementation
<git://holbrook.no/eth-event-msg.git>
#### Expressing locators in terms of numeric token id
Given the numeric token id `1234567890987654321` (`0x112210f4b16c1cb1`
hex), and a base url `https://contentgateway.grassecon.net`, the result
of the methods may be as follows:
`toURI(toHex(1234567890987654321))`
-\>
`https://contentgateway.grassecon.net/000000000000000000000000000000000000000000000000112210f4b16c1cb1`
`toURL(toHex(1234567890987654321))`
-\>
`https://contentgateway.grassecon.net/000000000000000000000000000000000000000000000000112210f4b16c1cb1`
`tokenURI(1234567890987654321)`
-\>
`https://contentgateway.grassecon.net/000000000000000000000000000000000000000000000000112210f4b16c1cb1`
#### Expressing locators in terms of a digest
Given the data `foo`, the digest algorithm `sha256` and a base url
`https://contentgateway.grassecon.net`, the result of the methods may be
as follows:
`toURI(sha256(foo))`
-\>
`"sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
`toURL(sha256(foo))`
-\>
`"https://contentgateway.grassecon.net/2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
`tokenURI(toUint(sha256(foo)))`
-\>
`"https://contentgateway.grassecon.net/2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
#### Locator without URL
Given the data `foo`, the digest algorithm `sha256` and no base url, the
result of the methods may be as follows:
`toURI(sha256(foo))`
-\>
`"sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
`toURL(sha256(foo))`
-\> `""`
`tokenURI(toUint(sha256(foo)))`
-\>
`"sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"`
### Minter
Attached to `ERC20` and `ERC721` tokens that may be minted.
Implements the `mint(...)` and `safeMint(...)` parts of `ERC5679` for
interoperability.
#### ERC165 Interface identifier
5878bcf4
#### Solidity interface definition
interface IMinter {
// Tokens are successfully minted; by who, to whom and how much
event Mint(address indexed _minter, address indexed _beneficiary, uint256 value);
// The given token has been successfully minted; by who, to whom and how much
event Mint(address indexed _minter, address indexed _beneficiary, address indexed _token, uint256 value);
// Mint the specified value of tokens to the specified recipient
function mintTo(address _beneficiary, uint256 value) external returns (bool);
// Satisfies ERC5679 for ERC20
function mint(address _beneficiary, uint256 value, bytes calldata _data) external;
// Satisfies ERC5679 for ERC721
function safeMint(address _beneficiary, uint256 value, bytes calldata _data) external;
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>
### Msg
Enables a reference "message" to describe the contract using an
off-chain resource.
The reference may or may not be mutable.
The interface complements `Locator` and `MultiHash` to generate locators
for how to resolve the reference.
#### ERC165 Interface identifier
a3002595
#### Solidity interface definition
interface IMsg {
// Emitted when a new message digest has been set
// Should not be emitted if the digest set is identical to the previous
event Msg(bytes _msgDigest);
// Get the current message content hash
function getMsg() external view returns(bytes memory);
}
#### Example implementation
<git://holbrook.no/eth-event-msg.git>
### Registry
The Registry interface is a key-value store resolving well-known
contract identifier names to contract addresses.
It currently has two distinct uses in the CIC context:
1. Entry-point to discover all relevant contracts of CIC networks.
2. Unique (ERC20) token symbol resolver.
#### ERC165 Interface identifier
effbf671
#### Solidity interface definition
interface IRegistryClient {
// Address added to store with the given key
event AddressKey(bytes32 indexed _key, address _address);
// Return the address of the contract identified by the given byte string
function addressOf(bytes32) external view returns (address);
// Indexed accessor for the full list of registred identifiers
function identifier(uint256) external view returns (bytes32);
// Number of registered interfaces
function identifierCount() external view returns (uint256);
}
#### Contract registry implementation
<git://holbrook.no/eth-contract-registry.git>
#### Token index implementation
<git://holbrook.no/eth-contract-registry.git>
### Seal
Some smart contract parameters may need to be mutable over part of a
smart contract’s lifetime.
This interface provides a method to explicitly signal when certain
parameters have been rendered immutable.
The value of `sealState()` *must not* decrease, and must not exceed
`maxSealState`.
`maxSealState` is used to define that *all mutable parameters* have been
rendered immutable. The practical implications of this will vary between
contracts.
The implementer is encouraged to use simple, descriptive names in the
source code to describe the applicable seal states.
Use cases of sealing include:
- Whether more tokens can be minted
- Allow ownership of a contract to be transferred
- The expiry time of a token (see `Expire`)
#### ERC165 Interface identifier
0d7491f8
#### Solidity interface definition
interface ISeal {
// Seal state has changed.
event SealStateChange(bool indexed _final, uint256 _sealState);
// The current seal state.
function sealState() external view returns(uint256);
// The numeric seal state in everything sealable has been sealed.
function maxSealState() external view returns(uint256);
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>
### Throttle
An backend contract to limit access to a resource by time.
The smart contract managing the resource calls `have(address)` on this
contract to check if it can be made use of at the current point in time.
This also implements [ACL](#acl).
When the resource is made use of, it calls `poke(address)` method to
register when it has been made use of.
The `next(address)` method returns the timestamp from which the resource
may be used again by the given address. The implementer is permitted to
change the value at any time.
#### ERC165 Interface identifier
242824a9
#### Solidity interface definition
interface IThrottle {
// Returns true if the given address is authorized to make use of the resource at the current moment.
// Implements ACL
function have(address _address) external view returns(bool);
// Returns the timestamp when the resource may next be used by the given address.
// A return value of 0 or a timestamp before the current timestamp indicates that the resource may used momentarily.
// A return value of max uint265 can be used to indicate that the resource may never be used again by the address.
function next(address _address) external returns(bool);
// Must be called when the resource is being used.
function poke(address _address) external returns(bool);
}
#### Reference implementation
<git://holbrook.no/eth-faucet.git> (PeriodSimple contract)
### TokenLimit
Define limits of value amounts of tokens that individual addresses can
hold.
Limits are inclusive; a limit for 42 means transfer resulting in a token
balance *higher* than 42 should be rejected.
A return value of 0 indicates that the token is categorically not
accepted by the holder.
#### ERC165 Interface identifier
23778613
#### Solidity interface definition
interface ITokenLimit {
// Returns limit of total value a holder will accept of a specific token.
// The value limit returned is inclusive; A limit of 42 means any operation resulting in a balance OVER 42 should be rejected.
// A value of 0 means that no value of the token is accepted.
function limitOf(address _token, address _holder) external view returns(uint256);
}
#### Reference implementations
- <git://holbrook.no/erc20-limiter.git>
### TokenQuote
Quote an output token value for a given value of input tokens.
Both input and output value is denominated in the smallest available
unit of respective tokens.
#### ERC165 Interface identifier
dbb21d40
#### Solidity interface definition
interface ITokenQuote {
// Returns, within a current context, what value of outTokens the given value of inTokens translates to.
// The values are given in smallest unit of each respective token.
function valueFor(address _outToken, address _inToken, uint256 value) external view returns (uint256);
}
#### Example implementation
- <git://holbrook.no/erc20-limiter.git>
### TokenRateChange
Enables detection of properties for CIC tokens that change value over
time, e.g. through demurrage.
It allows defining the granularity of the rate of change, aswell as a
frequency for which the rate of change is applied.
A method for canonical value change calculations is also provided.
#### ERC165 Interface identifier
b716af03
#### Solidity interface definition
interface ITokenChangeRate {
// Time unit resolution for rate of change.
// A value of 0 indicates no rate of change,
function changeTimeUnit() external view returns(uint256);
// Rate of change per changeTimeUnit(), signed integer.
// An effective value of 0 indicates no rate of change.
function changeRate() external view returns (int256);
// Number of decimals with which the changeRate is defined.
// changeRate() should be divided by 10 ** changeRateDecimals() to obtain effective value
function changeRateDecimals() external view returns(uint8);
// Timestamp from when rate of change should be applied.
// A value of 0 indicates no rate of change,
function changeStartTime() external view returns(uint256);
// Calculate value with change rate applied for given amount of time units.
// Will calculate compounded change over the given amount of time units
function applyChange(int256 _value, uint256 _changeTimeUnits) external view returns(int256);
}
#### Reference implementations
- <git://holbrook.no/erc20-demurrage-token.git>
### TokenSwap
Token swap interface that can fit token escrow purposes aswell as token
swap contracts.
Optionally may define a `defaultToken`, that may among other things be
used for `withdraw()` calls without an `inToken`.
An explicit *ERC20 approval* of the balance to be transacted will
usually be required for the implementing contract.
If the value 0 is passed as argument to `deposit` or `withdraw`,
implementers can choose one of two possible outcomes:
- Noop. 0 *must* be returned.
- Use *balance* or the max available *allowance*. The actual (spent)
value *must* be returned.
#### ERC165 Interface identifier
4146b765
#### Solidity interface definition
interface ITokenSwap {
// Emitted when a new deposit has been made.
event Deposit(address indexed _token, uint256 _value);
// Default token used to access the token swap.
// Returns zero-address if no default token is defined.
function defaultToken() external returns (address);
// Add inToken liquidity to the tune of given value.
// Requires token approval for the corresponding value.
// If value is 0, up to the full approval MAY be used for the transfer.
function deposit(address _inToken, uint256 _value) external returns (uint256);
// Withdraw pending outToken balance of given value in the pool for the sender.
// May require token approval for defaultToken if used by contract as exchange for the withdrawal.
// If value is 0, up to the full approval value MAY be used for the transfer.
function withdraw(address _outToken, uint256 _value) external returns (uint256);
// Exchange inToken equalling given value for outToken.
// Requires token approval for the value of inToken.
// If value is 0, up to the full approval value MAY be used for the transfer.
function withdraw(address _outToken, address _inToken, uint256 _value) external returns (uint256);
}
#### Reference implementations
- <git://holbrook.no/erc20-pool.git>
#### Handling deposits
The implementation is free to decide whether deposits can be recovered
directly, or if they will be locked in the smart contract - temporarily
or permanently.
For the duration deposits are locked, they are part of the smart
contract’s swap liquidity. During this time, locked deposits may only be
withdrawn in exchange for other tokens accepted by the contract.
Deposits that are not locked should be withdrawable using the
`withdraw(address,uint256)` (`0xf3fef3a3`) method signature.
Of course, as with most swap contracts, the tokens available for
withdrawal by the holder may not necessarily match the tokens that were
deposited by the holder.
### TokenVote
Execute elections with granular ERC20 token votes.
A proposal submitted for vote may or may not contain multiple options.
If multiple options are available, an ERC20 token holder may distribute
its vote among the options with the granularity of the token balance.
Voted tokens **SHOULD** be locked until the voting has finalized.
Finalization of voting should be callable by anyone.
#### ERC165 Interface identifier
f2e0bfeb
#### Solidity interface definition
interface ITokenVote {
// A new proposal has been created.
event ProposalAdded(uint256 indexed _blockDeadline, uint256 indexed voteTargetPpm, uint256 indexed _proposalIdx);
// A proposal vote has been completed.
// The proposal is identified by the serial number in _proposalIdx. It is up to the implementer to define how the proposal should be retrieved by index.
// The proposal result may be in one of three states:
// * Ratified (_cancelled == false, _insufficient == false)
// * Cancelled (_cancelled == true, _insufficient == false)
// * Not reached quorum (_cancelled == false, _insufficient == true)
event ProposalCompleted(uint256 indexed _proposalIdx, bool indexed _cancelled, bool indexed _insufficient, uint256 _totalVote);
// Propose a new vote.
// Voting is active until one of:
// * total cancel vote reach quorum (_targetVotePpm, ppm = parts-per-million).
// * _blockWait blocks from now.
function propose(bytes32 _description, uint256 _blockWait, uint24 _targetVotePpm) external returns (uint256);
// Add a voting option to a proposal
function addOption(uint256 _proposalIdx, bytes32 _description) external;
// Get number of options available for the proposal.
// This decides the boundary of the index that can be used with voteOptions(...)
// If the result is 0, vote(...) can be used aswell.
function optionCount(uint256 _proposalIdx) external view returns(uint256);
// Get proposal option. Assumes that proposal was created with proposeMulti(...)
function getOption(uint256 _proposalIdx, uint256 _optionIdx) external view returns (bytes32);
// Get vote count for the given option.
// If proposal has no options, it should be called with _optionIdx = 0
function voteCount(uint256 _proposalIdx, uint256 _optionIdx) external view returns(uint256);
// Vote on a proposal without options.
// Assumes that proposal was created with propose(...) and will fail otherwise.
function vote(uint256 _value) external returns (bool);
// Vote on a proposal option. Assumes that proposal was created with proposeMulti(...).
// Must work with a non-option proposal if _optionIndex is 0.
function voteOption(uint256 _optionIndex, uint256 _value) external returns (bool);
// Vote to cancel a proposal.
// If cancel has the majority:
// * A vote without options will have rejected the proposal description.
// * A vote with options will have rejected the proposal description as well as all option descriptions.
function voteCancel(uint256 _value) external returns (bool);
// Finalize the vote for a proposal.
// May be called if deadline has been passed, or if:
// * quorum has been reached with cancel votes.
// * quorum has been reached and proposal has no/only one option.
function finalize() external returns (bool);
}
#### Reference implementations
- <git://holbrook.no/evm-tokenvote.git>
### Writer
A complement to ERC173, which allows definition of a class of
super-users for a contract.
A super-user address may perform *more* actions than a "normal" address,
aswell as *some* actions normally limited to the *contract owner*.
If an *contract owner* is defined, No super-user should be able to
perform actions that *contract owner* cannot perform.
Typically, only the *contract owner*, if it is defined, can add or
remove a super-user.
Some use-case examples of super-user actions include:
- Mint new tokens.
- Change the amount dispensed by the faucet.
- Edit access control lists.
#### ERC165 Interface identifier
abe1f1f5
#### Solidity interface definition
interface IWriter {
// A writer has been added by _executor
event WriterAdded(address _writer);
// A writer has been removed by _executor
event WriterDeleted(address _writer);
// Add a new writer to the contract.
function addWriter(address _writer) external returns (bool);
// Remove existing writer from the contract.
function deleteWriter(address _writer) external returns (bool);
// Check whether the given address is a writer.
function isWriter(address _writer) external view returns (bool);
}
#### Example implementation
<https://git.grassecon.net/cicnet/erc20-demurrage-token.git>

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# local imports
from cic_contracts.search import search
from cic_contracts.names import Name
erc165_for = search
def abi(v):
return search(v, ext='json')

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