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0x0863dd15c7539575f651707e501374ba289ec04ad78b4d8a65c80561fed68b32 | Approve Exchange... | (pending) | 2 days ago | IN | 0 ETH | (Pending) | |||
Approve All Dele... | 19974736 | 59 days ago | IN | 0 ETH | 0.00043924 | ||||
Approve Issue On... | 19707267 | 96 days ago | IN | 0 ETH | 0.00037656 | ||||
Approve All Dele... | 19510370 | 124 days ago | IN | 0 ETH | 0.00113531 | ||||
Approve Issue On... | 19509841 | 124 days ago | IN | 0 ETH | 0.00097652 | ||||
Approve Claim On... | 18859321 | 215 days ago | IN | 0 ETH | 0.00092289 | ||||
Approve Claim On... | 18859318 | 215 days ago | IN | 0 ETH | 0.00120684 | ||||
Approve All Dele... | 18859113 | 215 days ago | IN | 0 ETH | 0.00108576 | ||||
Approve Burn On ... | 18706857 | 237 days ago | IN | 0 ETH | 0.00214271 | ||||
Approve Claim On... | 18706825 | 237 days ago | IN | 0 ETH | 0.0020199 | ||||
Approve All Dele... | 18633802 | 247 days ago | IN | 0 ETH | 0.00176238 | ||||
Approve All Dele... | 18527424 | 262 days ago | IN | 0 ETH | 0.00215628 | ||||
Approve All Dele... | 18491208 | 267 days ago | IN | 0 ETH | 0.0010585 | ||||
Approve All Dele... | 18423157 | 276 days ago | IN | 0 ETH | 0.00125821 | ||||
Approve All Dele... | 18405045 | 279 days ago | IN | 0 ETH | 0.00040412 | ||||
Approve All Dele... | 18376223 | 283 days ago | IN | 0 ETH | 0.00059031 | ||||
Approve All Dele... | 18343397 | 287 days ago | IN | 0 ETH | 0.00049234 | ||||
Approve All Dele... | 18135668 | 317 days ago | IN | 0 ETH | 0.00112498 | ||||
Approve All Dele... | 18135666 | 317 days ago | IN | 0 ETH | 0.0013426 | ||||
Approve All Dele... | 18080363 | 324 days ago | IN | 0 ETH | 0.00087288 | ||||
Approve All Dele... | 18050995 | 328 days ago | IN | 0 ETH | 0.00086419 | ||||
Approve All Dele... | 17974240 | 339 days ago | IN | 0 ETH | 0.00115089 | ||||
Approve All Dele... | 17918454 | 347 days ago | IN | 0 ETH | 0.00074808 | ||||
Remove Claim On ... | 17858522 | 355 days ago | IN | 0 ETH | 0.00045018 | ||||
Approve All Dele... | 17830067 | 359 days ago | IN | 0 ETH | 0.00164344 |
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Latest 25 internal transactions (View All)
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Contract Name:
DelegateApprovals
Compiler Version
v0.4.25+commit.59dbf8f1
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2020-03-31 */ /* ____ __ __ __ _ / __/__ __ ___ / /_ / / ___ / /_ (_)__ __ _\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ / /___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\ /___/ * Synthetix: DelegateApprovals.sol * * Latest source (may be newer): https://github.com/Synthetixio/synthetix/blob/master/contracts/DelegateApprovals.sol * Docs: https://docs.synthetix.io/contracts/DelegateApprovals * * Contract Dependencies: * - Owned * - State * Libraries: (none) * * MIT License * =========== * * Copyright (c) 2020 Synthetix * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */ /* =============================================== * Flattened with Solidifier by Coinage * * https://solidifier.coina.ge * =============================================== */ pragma solidity 0.4.25; // https://docs.synthetix.io/contracts/Owned contract Owned { address public owner; address public nominatedOwner; /** * @dev Owned Constructor */ constructor(address _owner) public { require(_owner != address(0), "Owner address cannot be 0"); owner = _owner; emit OwnerChanged(address(0), _owner); } /** * @notice Nominate a new owner of this contract. * @dev Only the current owner may nominate a new owner. */ function nominateNewOwner(address _owner) external onlyOwner { nominatedOwner = _owner; emit OwnerNominated(_owner); } /** * @notice Accept the nomination to be owner. */ function acceptOwnership() external { require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership"); emit OwnerChanged(owner, nominatedOwner); owner = nominatedOwner; nominatedOwner = address(0); } modifier onlyOwner { require(msg.sender == owner, "Only the contract owner may perform this action"); _; } event OwnerNominated(address newOwner); event OwnerChanged(address oldOwner, address newOwner); } // https://docs.synthetix.io/contracts/State contract State is Owned { // the address of the contract that can modify variables // this can only be changed by the owner of this contract address public associatedContract; constructor(address _owner, address _associatedContract) public Owned(_owner) { associatedContract = _associatedContract; emit AssociatedContractUpdated(_associatedContract); } /* ========== SETTERS ========== */ // Change the associated contract to a new address function setAssociatedContract(address _associatedContract) external onlyOwner { associatedContract = _associatedContract; emit AssociatedContractUpdated(_associatedContract); } /* ========== MODIFIERS ========== */ modifier onlyAssociatedContract { require(msg.sender == associatedContract, "Only the associated contract can perform this action"); _; } /* ========== EVENTS ========== */ event AssociatedContractUpdated(address associatedContract); } /** * @notice This contract is based on the code available from this blog * https://blog.colony.io/writing-upgradeable-contracts-in-solidity-6743f0eecc88/ * Implements support for storing a keccak256 key and value pairs. It is the more flexible * and extensible option. This ensures data schema changes can be implemented without * requiring upgrades to the storage contract. */ // https://docs.synthetix.io/contracts/EternalStorage contract EternalStorage is State { constructor(address _owner, address _associatedContract) public State(_owner, _associatedContract) {} /* ========== DATA TYPES ========== */ mapping(bytes32 => uint) UIntStorage; mapping(bytes32 => string) StringStorage; mapping(bytes32 => address) AddressStorage; mapping(bytes32 => bytes) BytesStorage; mapping(bytes32 => bytes32) Bytes32Storage; mapping(bytes32 => bool) BooleanStorage; mapping(bytes32 => int) IntStorage; // UIntStorage; function getUIntValue(bytes32 record) external view returns (uint) { return UIntStorage[record]; } function setUIntValue(bytes32 record, uint value) external onlyAssociatedContract { UIntStorage[record] = value; } function deleteUIntValue(bytes32 record) external onlyAssociatedContract { delete UIntStorage[record]; } // StringStorage function getStringValue(bytes32 record) external view returns (string memory) { return StringStorage[record]; } function setStringValue(bytes32 record, string value) external onlyAssociatedContract { StringStorage[record] = value; } function deleteStringValue(bytes32 record) external onlyAssociatedContract { delete StringStorage[record]; } // AddressStorage function getAddressValue(bytes32 record) external view returns (address) { return AddressStorage[record]; } function setAddressValue(bytes32 record, address value) external onlyAssociatedContract { AddressStorage[record] = value; } function deleteAddressValue(bytes32 record) external onlyAssociatedContract { delete AddressStorage[record]; } // BytesStorage function getBytesValue(bytes32 record) external view returns (bytes memory) { return BytesStorage[record]; } function setBytesValue(bytes32 record, bytes value) external onlyAssociatedContract { BytesStorage[record] = value; } function deleteBytesValue(bytes32 record) external onlyAssociatedContract { delete BytesStorage[record]; } // Bytes32Storage function getBytes32Value(bytes32 record) external view returns (bytes32) { return Bytes32Storage[record]; } function setBytes32Value(bytes32 record, bytes32 value) external onlyAssociatedContract { Bytes32Storage[record] = value; } function deleteBytes32Value(bytes32 record) external onlyAssociatedContract { delete Bytes32Storage[record]; } // BooleanStorage function getBooleanValue(bytes32 record) external view returns (bool) { return BooleanStorage[record]; } function setBooleanValue(bytes32 record, bool value) external onlyAssociatedContract { BooleanStorage[record] = value; } function deleteBooleanValue(bytes32 record) external onlyAssociatedContract { delete BooleanStorage[record]; } // IntStorage function getIntValue(bytes32 record) external view returns (int) { return IntStorage[record]; } function setIntValue(bytes32 record, int value) external onlyAssociatedContract { IntStorage[record] = value; } function deleteIntValue(bytes32 record) external onlyAssociatedContract { delete IntStorage[record]; } } // https://docs.synthetix.io/contracts/DelegateApprovals contract DelegateApprovals is Owned { bytes32 public constant BURN_FOR_ADDRESS = "BurnForAddress"; bytes32 public constant ISSUE_FOR_ADDRESS = "IssueForAddress"; bytes32 public constant CLAIM_FOR_ADDRESS = "ClaimForAddress"; bytes32 public constant EXCHANGE_FOR_ADDRESS = "ExchangeForAddress"; bytes32 public constant APPROVE_ALL = "ApproveAll"; bytes32[5] private _delegatableFunctions = [ APPROVE_ALL, BURN_FOR_ADDRESS, ISSUE_FOR_ADDRESS, CLAIM_FOR_ADDRESS, EXCHANGE_FOR_ADDRESS ]; /* ========== STATE VARIABLES ========== */ EternalStorage public eternalStorage; /** * @dev Constructor * @param _owner The address which controls this contract. * @param _eternalStorage The eternalStorage address. */ constructor(address _owner, EternalStorage _eternalStorage) public Owned(_owner) { eternalStorage = _eternalStorage; } /* ========== VIEWS ========== */ // Move it to setter and associatedState // util to get key based on action name + address of authoriser + address for delegate function _getKey(bytes32 _action, address _authoriser, address _delegate) internal pure returns (bytes32) { return keccak256(abi.encodePacked(_action, _authoriser, _delegate)); } // hash of actionName + address of authoriser + address for the delegate function canBurnFor(address authoriser, address delegate) external view returns (bool) { return _checkApproval(BURN_FOR_ADDRESS, authoriser, delegate); } function canIssueFor(address authoriser, address delegate) external view returns (bool) { return _checkApproval(ISSUE_FOR_ADDRESS, authoriser, delegate); } function canClaimFor(address authoriser, address delegate) external view returns (bool) { return _checkApproval(CLAIM_FOR_ADDRESS, authoriser, delegate); } function canExchangeFor(address authoriser, address delegate) external view returns (bool) { return _checkApproval(EXCHANGE_FOR_ADDRESS, authoriser, delegate); } function approvedAll(address authoriser, address delegate) public view returns (bool) { return eternalStorage.getBooleanValue(_getKey(APPROVE_ALL, authoriser, delegate)); } // internal function to check approval based on action // if approved for all actions then will return true // before checking specific approvals function _checkApproval(bytes32 action, address authoriser, address delegate) internal view returns (bool) { if (approvedAll(authoriser, delegate)) return true; return eternalStorage.getBooleanValue(_getKey(action, authoriser, delegate)); } /* ========== SETTERS ========== */ // Approve All function approveAllDelegatePowers(address delegate) external { _setApproval(APPROVE_ALL, msg.sender, delegate); } // Removes all delegate approvals function removeAllDelegatePowers(address delegate) external { for (uint i = 0; i < _delegatableFunctions.length; i++) { _withdrawApproval(_delegatableFunctions[i], msg.sender, delegate); } } // Burn on behalf function approveBurnOnBehalf(address delegate) external { _setApproval(BURN_FOR_ADDRESS, msg.sender, delegate); } function removeBurnOnBehalf(address delegate) external { _withdrawApproval(BURN_FOR_ADDRESS, msg.sender, delegate); } // Issue on behalf function approveIssueOnBehalf(address delegate) external { _setApproval(ISSUE_FOR_ADDRESS, msg.sender, delegate); } function removeIssueOnBehalf(address delegate) external { _withdrawApproval(ISSUE_FOR_ADDRESS, msg.sender, delegate); } // Claim on behalf function approveClaimOnBehalf(address delegate) external { _setApproval(CLAIM_FOR_ADDRESS, msg.sender, delegate); } function removeClaimOnBehalf(address delegate) external { _withdrawApproval(CLAIM_FOR_ADDRESS, msg.sender, delegate); } // Exchange on behalf function approveExchangeOnBehalf(address delegate) external { _setApproval(EXCHANGE_FOR_ADDRESS, msg.sender, delegate); } function removeExchangeOnBehalf(address delegate) external { _withdrawApproval(EXCHANGE_FOR_ADDRESS, msg.sender, delegate); } function _setApproval(bytes32 action, address authoriser, address delegate) internal { require(delegate != address(0), "Can't delegate to address(0)"); eternalStorage.setBooleanValue(_getKey(action, authoriser, delegate), true); emit Approval(authoriser, delegate, action); } function _withdrawApproval(bytes32 action, address authoriser, address delegate) internal { // Check approval is set otherwise skip deleting approval if (eternalStorage.getBooleanValue(_getKey(action, authoriser, delegate))) { eternalStorage.deleteBooleanValue(_getKey(action, authoriser, delegate)); emit WithdrawApproval(authoriser, delegate, action); } } function setEternalStorage(EternalStorage _eternalStorage) external onlyOwner { require(_eternalStorage != address(0), "Can't set eternalStorage to address(0)"); eternalStorage = _eternalStorage; emit EternalStorageUpdated(eternalStorage); } /* ========== EVENTS ========== */ event Approval(address indexed authoriser, address delegate, bytes32 action); event WithdrawApproval(address indexed authoriser, address delegate, bytes32 action); event EternalStorageUpdated(address newEternalStorage); }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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:[{"indexed":true,"name":"authoriser","type":"address"},{"indexed":false,"name":"delegate","type":"address"},{"indexed":false,"name":"action","type":"bytes32"}],"name":"WithdrawApproval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"newEternalStorage","type":"address"}],"name":"EternalStorageUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"newOwner","type":"address"}],"name":"OwnerNominated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"oldOwner","type":"address"},{"indexed":false,"name":"newOwner","type":"address"}],"name":"OwnerChanged","type":"event"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe0000000000000000000000008f586f063ffbb89b186c8e604fc6614766f9c9d1
-----Decoded View---------------
Arg [0] : _owner (address): 0xDe910777C787903F78C89e7a0bf7F4C435cBB1Fe
Arg [1] : _eternalStorage (address): 0x8F586F063ffbb89b186C8e604FC6614766f9C9d1
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000de910777c787903f78c89e7a0bf7f4c435cbb1fe
Arg [1] : 0000000000000000000000008f586f063ffbb89b186c8e604fc6614766f9c9d1
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OVERVIEW
The approval state contract is designed to allow a wallet to authorise another address to perform actions, on a contract, on their behalf.This could be an automated service that would help a wallet claim fees / rewards on their behalf.
The concept is similar to the ERC20 interface where a wallet can approve an authorised party to spend on the authorising party's behalf in the allowance interface.
Withdrawing approval deletes the approval for the given delegate.
This contract inherits state for upgradeability / associated contract.
Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | 100.00% | $1.71 | 124.19 | $212.36 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.