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Transaction Hash MethodBlockFromToApprove 20395172 2024-07-27 3:22:59 25 hrs ago 1722050579 IN 0 ETH$0.00 0.00011984 2.336332 Approve 20395166 2024-07-27 3:21:47 25 hrs ago 1722050507 IN 0 ETH$0.00 0.00012246 2.37564085 Approve 20395095 2024-07-27 3:07:35 25 hrs ago 1722049655 IN 0 ETH$0.00 0.00012147 2.36810826 Approve 20395056 2024-07-27 2:59:47 25 hrs ago 1722049187 IN 0 ETH$0.00 0.00011713 2.28347782 Transfer 20391704 2024-07-26 15:45:23 36 hrs ago 1722008723 IN 0 ETH$0.00 0.00020847 4.03648096 Transfer 20380651 2024-07-25 2:43:35 3 days ago 1721875415 IN 0 ETH$0.00 0.00025738 4.98341625 Approve 20377080 2024-07-24 14:44:47 3 days ago 1721832287 IN 0 ETH$0.00 0.0007558 14.64449939 Approve 20370689 2024-07-23 17:20:47 4 days ago 1721755247 IN 0 ETH$0.00 0.00028646 9.76840385 Approve 20370616 2024-07-23 17:06:11 4 days ago 1721754371 IN 0 ETH$0.00 0.00092047 17.83516154 Transfer 20361753 2024-07-22 11:24:11 5 days ago 1721647451 IN 0 ETH$0.00 0.00030003 5.80793501 Approve 20361582 2024-07-22 10:49:47 5 days ago 1721645387 IN 0 ETH$0.00 0.00017408 3.37317498 Approve 20359727 2024-07-22 4:36:59 5 days ago 1721623019 IN 0 ETH$0.00 0.00044449 8.62251955 Transfer 20357188 2024-07-21 20:05:35 6 days ago 1721592335 IN 0 ETH$0.00 0.00153123 22.27706184 Transfer 20350827 2024-07-20 22:48:23 7 days ago 1721515703 IN 0 ETH$0.00 0.00024899 3.62128143 Approve 20347197 2024-07-20 10:38:59 7 days ago 1721471939 IN 0 ETH$0.00 0.00008976 3.06097381 Transfer 20345703 2024-07-20 5:38:23 7 days ago 1721453903 IN 0 ETH$0.00 0.00025479 4.93551727 Approve 20337800 2024-07-19 3:10:47 9 days ago 1721358647 IN 0 ETH$0.00 0.00070688 13.69669243 Approve 20331833 2024-07-18 7:11:35 9 days ago 1721286695 IN 0 ETH$0.00 0.00051103 9.95982869 Approve 20331816 2024-07-18 7:08:11 9 days ago 1721286491 IN 0 ETH$0.00 0.00047946 9.34446147 Approve 20312565 2024-07-15 14:39:23 12 days ago 1721054363 IN 0 ETH$0.00 0.00039233 7.64284218 Transfer 20290619 2024-07-12 13:08:11 15 days ago 1720789691 IN 0 ETH$0.00 0.0001924 3.72523142 Transfer 20285112 2024-07-11 18:39:11 16 days ago 1720723151 IN 0 ETH$0.00 0.00046712 6.79477533 Transfer 20263316 2024-07-08 17:35:47 19 days ago 1720460147 IN 0 ETH$0.00 0.00032562 6.30465543 Transfer 20262649 2024-07-08 15:20:59 19 days ago 1720452059 IN 0 ETH$0.00 0.00044737 8.66196713 Approve 20251577 2024-07-07 2:13:23 21 days ago 1720318403 IN 0 ETH$0.00 0.00016329 3.16770179 Advanced mode: Intended for advanced users or developers and will display all Internal Transactions including zero value transfers. Name tag integration is not available in advanced view.Latest 25 internal transactions (View All)
Advanced mode:Parent Transaction Hash Block From To 20400327 2024-07-27 20:39:35 7 hrs ago 1722112775 0 ETH$0.00 20400327 2024-07-27 20:39:35 7 hrs ago 1722112775 0 ETH$0.00 20396247 2024-07-27 6:59:47 21 hrs ago 1722063587 0 ETH$0.00 20396247 2024-07-27 6:59:47 21 hrs ago 1722063587 0 ETH$0.00 20396247 2024-07-27 6:59:47 21 hrs ago 1722063587 0 ETH$0.00 20396247 2024-07-27 6:59:47 21 hrs ago 1722063587 0 ETH$0.00 20396247 2024-07-27 6:59:47 21 hrs ago 1722063587 0 ETH$0.00 20396247 2024-07-27 6:59:47 21 hrs ago 1722063587 0 ETH$0.00 20396247 2024-07-27 6:59:47 21 hrs ago 1722063587 0 ETH$0.00 20396247 2024-07-27 6:59:47 21 hrs ago 1722063587 0 ETH$0.00 20395172 2024-07-27 3:22:59 25 hrs ago 1722050579 0 ETH$0.00 20395166 2024-07-27 3:21:47 25 hrs ago 1722050507 0 ETH$0.00 20395095 2024-07-27 3:07:35 25 hrs ago 1722049655 0 ETH$0.00 20395056 2024-07-27 2:59:47 25 hrs ago 1722049187 0 ETH$0.00 20391704 2024-07-26 15:45:23 36 hrs ago 1722008723 0 ETH$0.00 20391699 2024-07-26 15:44:23 36 hrs ago 1722008663 0 ETH$0.00 20391699 2024-07-26 15:44:23 36 hrs ago 1722008663 0 ETH$0.00 20389088 2024-07-26 6:59:47 45 hrs ago 1721977187 0 ETH$0.00 20389088 2024-07-26 6:59:47 45 hrs ago 1721977187 0 ETH$0.00 20389088 2024-07-26 6:59:47 45 hrs ago 1721977187 0 ETH$0.00 20389088 2024-07-26 6:59:47 45 hrs ago 1721977187 0 ETH$0.00 20389088 2024-07-26 6:59:47 45 hrs ago 1721977187 0 ETH$0.00 20389088 2024-07-26 6:59:47 45 hrs ago 1721977187 0 ETH$0.00 20389088 2024-07-26 6:59:47 45 hrs ago 1721977187 0 ETH$0.00 20389088 2024-07-26 6:59:47 45 hrs ago 1721977187 0 ETH$0.00 Loading...LoadingContract Name:InitializeGovernedUpgradeabilityProxy
Compiler Versionv0.5.11+commit.c082d0b4
Contract Source Code (Solidity)Audit Report
- contract Proxy
- - function ()
- - function _implementation()
- - function _delegate(address implementa ...
- - function _willFallback()
- - function _fallback()
- library OpenZeppelinUpgradesAddress
- - function isContract(address account)
- contract BaseUpgradeabilityProxy i ...
- - function _implementation()
- - function _upgradeTo(address newImplem ...
- - function _setImplementation(address n ...
- contract Governable
- - function governor()
- - function _governor()
- - function _pendingGovernor()
- - function isGovernor()
- - function _setGovernor(address newGove ...
- - function _setPendingGovernor(address ...
- - function transferGovernance(address _ ...
- - function claimGovernance()
- - function _changeGovernor(address _new ...
- contract InitializeGovernedUpgrade ... *
- - function initialize(
- - function admin()
- - function implementation()
- - function upgradeTo(address newImpleme ...
- - function upgradeToAndCall(address new ...
- contract OUSDProxy is InitializeGo ...
/** *Submitted for verification at Etherscan.io on 2020-09-23 */ /** *Submitted for verification at Etherscan.io on 2020-09-23 */ pragma solidity 0.5.11; /** * @title Proxy * @dev Implements delegation of calls to other contracts, with proper * forwarding of return values and bubbling of failures. * It defines a fallback function that delegates all calls to the address * returned by the abstract _implementation() internal function. */ contract Proxy { /** * @dev Fallback function. * Implemented entirely in `_fallback`. */ function () payable external { _fallback(); } /** * @return The Address of the implementation. */ function _implementation() internal view returns (address); /** * @dev Delegates execution to an implementation contract. * This is a low level function that doesn't return to its internal call site. * It will return to the external caller whatever the implementation returns. * @param implementation Address to delegate. */ function _delegate(address implementation) internal { assembly { // Copy msg.data. We take full control of memory in this inline assembly // block because it will not return to Solidity code. We overwrite the // Solidity scratch pad at memory position 0. calldatacopy(0, 0, calldatasize) // Call the implementation. // out and outsize are 0 because we don't know the size yet. let result := delegatecall(gas, implementation, 0, calldatasize, 0, 0) // Copy the returned data. returndatacopy(0, 0, returndatasize) switch result // delegatecall returns 0 on error. case 0 { revert(0, returndatasize) } default { return(0, returndatasize) } } } /** * @dev Function that is run as the first thing in the fallback function. * Can be redefined in derived contracts to add functionality. * Redefinitions must call super._willFallback(). */ function _willFallback() internal { } /** * @dev fallback implementation. * Extracted to enable manual triggering. */ function _fallback() internal { _willFallback(); _delegate(_implementation()); } } /** * Utility library of inline functions on addresses * * Source https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-solidity/v2.1.3/contracts/utils/Address.sol * This contract is copied here and renamed from the original to avoid clashes in the compiled artifacts * when the user imports a zos-lib contract (that transitively causes this contract to be compiled and added to the * build/artifacts folder) as well as the vanilla Address implementation from an openzeppelin version. */ library OpenZeppelinUpgradesAddress { /** * Returns whether the target address is a contract * @dev This function will return false if invoked during the constructor of a contract, * as the code is not actually created until after the constructor finishes. * @param account address of the account to check * @return whether the target address is a contract */ function isContract(address account) internal view returns (bool) { uint256 size; // XXX Currently there is no better way to check if there is a contract in an address // than to check the size of the code at that address. // See https://ethereum.stackexchange.com/a/14016/36603 // for more details about how this works. // TODO Check this again before the Serenity release, because all addresses will be // contracts then. // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } } /** * @title BaseUpgradeabilityProxy * @dev This contract implements a proxy that allows to change the * implementation address to which it will delegate. * Such a change is called an implementation upgrade. */ contract BaseUpgradeabilityProxy is Proxy { /** * @dev Emitted when the implementation is upgraded. * @param implementation Address of the new implementation. */ event Upgraded(address indexed implementation); /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Returns the current implementation. * @return Address of the current implementation */ function _implementation() internal view returns (address impl) { bytes32 slot = IMPLEMENTATION_SLOT; assembly { impl := sload(slot) } } /** * @dev Upgrades the proxy to a new implementation. * @param newImplementation Address of the new implementation. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Sets the implementation address of the proxy. * @param newImplementation Address of the new implementation. */ function _setImplementation(address newImplementation) internal { require(OpenZeppelinUpgradesAddress.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address"); bytes32 slot = IMPLEMENTATION_SLOT; assembly { sstore(slot, newImplementation) } } } /** * @title OUSD Governable Contract * @dev Copy of the openzeppelin Ownable.sol contract with nomenclature change * from owner to governor and renounce methods removed. Does not use * Context.sol like Ownable.sol does for simplification. * @author Origin Protocol Inc */ contract Governable { // Storage position of the owner and pendingOwner of the contract bytes32 private constant governorPosition = 0x7bea13895fa79d2831e0a9e28edede30099005a50d652d8957cf8a607ee6ca4a; //keccak256("OUSD.governor"); bytes32 private constant pendingGovernorPosition = 0x44c4d30b2eaad5130ad70c3ba6972730566f3e6359ab83e800d905c61b1c51db; //keccak256("OUSD.pending.governor"); event PendingGovernorshipTransfer( address indexed previousGovernor, address indexed newGovernor ); event GovernorshipTransferred( address indexed previousGovernor, address indexed newGovernor ); /** * @dev Initializes the contract setting the deployer as the initial Governor. */ constructor() internal { _setGovernor(msg.sender); emit GovernorshipTransferred(address(0), _governor()); } /** * @dev Returns the address of the current Governor. */ function governor() public view returns (address) { return _governor(); } function _governor() internal view returns (address governorOut) { bytes32 position = governorPosition; assembly { governorOut := sload(position) } } function _pendingGovernor() internal view returns (address pendingGovernor) { bytes32 position = pendingGovernorPosition; assembly { pendingGovernor := sload(position) } } /** * @dev Throws if called by any account other than the Governor. */ modifier onlyGovernor() { require(isGovernor(), "Caller is not the Governor"); _; } /** * @dev Returns true if the caller is the current Governor. */ function isGovernor() public view returns (bool) { return msg.sender == _governor(); } function _setGovernor(address newGovernor) internal { bytes32 position = governorPosition; assembly { sstore(position, newGovernor) } } function _setPendingGovernor(address newGovernor) internal { bytes32 position = pendingGovernorPosition; assembly { sstore(position, newGovernor) } } /** * @dev Transfers Governance of the contract to a new account (`newGovernor`). * Can only be called by the current Governor. Must be claimed for this to complete * @param _newGovernor Address of the new Governor */ function transferGovernance(address _newGovernor) external onlyGovernor { _setPendingGovernor(_newGovernor); emit PendingGovernorshipTransfer(_governor(), _newGovernor); } /** * @dev Claim Governance of the contract to a new account (`newGovernor`). * Can only be called by the new Governor. */ function claimGovernance() external { require( msg.sender == _pendingGovernor(), "Only the pending Governor can complete the claim" ); _changeGovernor(msg.sender); } /** * @dev Change Governance of the contract to a new account (`newGovernor`). * @param _newGovernor Address of the new Governor */ function _changeGovernor(address _newGovernor) internal { require(_newGovernor != address(0), "New Governor is address(0)"); emit GovernorshipTransferred(_governor(), _newGovernor); _setGovernor(_newGovernor); } } /** * @title BaseGovernedUpgradeabilityProxy * @dev This contract combines an upgradeability proxy with our governor system * @author Origin Protocol Inc */ contract InitializeGovernedUpgradeabilityProxy is Governable, BaseUpgradeabilityProxy { /** * @dev Contract initializer with Governor enforcement * @param _logic Address of the initial implementation. * @param _initGovernor Address of the initial Governor. * @param _data Data to send as msg.data to the implementation to initialize the proxied contract. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped. */ function initialize( address _logic, address _initGovernor, bytes memory _data ) public payable onlyGovernor { require(_implementation() == address(0)); assert( IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1) ); _setImplementation(_logic); if (_data.length > 0) { (bool success, ) = _logic.delegatecall(_data); require(success); } _changeGovernor(_initGovernor); } /** * @return The address of the proxy admin/it's also the governor. */ function admin() external view returns (address) { return _governor(); } /** * @return The address of the implementation. */ function implementation() external view returns (address) { return _implementation(); } /** * @dev Upgrade the backing implementation of the proxy. * Only the admin can call this function. * @param newImplementation Address of the new implementation. */ function upgradeTo(address newImplementation) external onlyGovernor { _upgradeTo(newImplementation); } /** * @dev Upgrade the backing implementation of the proxy and call a function * on the new implementation. * This is useful to initialize the proxied contract. * @param newImplementation Address of the new implementation. * @param data Data to send as msg.data in the low level call. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. */ function upgradeToAndCall(address newImplementation, bytes calldata data) external payable onlyGovernor { _upgradeTo(newImplementation); (bool success, ) = newImplementation.delegatecall(data); require(success); } } /** * @notice OUSDProxy delegates calls to a OUSD implementation */ contract OUSDProxy is InitializeGovernedUpgradeabilityProxy { }
Contract Security Audit
- Trail of Bits - December 21st, 2020 - Security Audit Report
- Solidified - December 17th, 2020 - Security Audit Report
Contract ABI
[{"constant":true,"inputs":[],"name":"governor","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"claimGovernance","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"isGovernor","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"_initGovernor","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"initialize","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_newGovernor","type":"address"}],"name":"transferGovernance","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousGovernor","type":"address"},{"indexed":true,"internalType":"address","name":"newGovernor","type":"address"}],"name":"PendingGovernorshipTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousGovernor","type":"address"},{"indexed":true,"internalType":"address","name":"newGovernor","type":"address"}],"name":"GovernorshipTransferred","type":"event"}]
Contract Creation Code
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Swarm Source
bzzr://d4bf53ff6beeda8a0bbb972d48c8063ed6c0c88fbfef0c441141dc0e1cbaaf4e
Loading...LoadingLoading...LoadingABI for the implementation contract at 0x33db8d52d65f75e4cdda1b02463760c9561a2aa1, using the EIP-897 DelegateProxy concept.
Previously recorded to be on 0xb248c975daeac47c4960ecbd10a79e486ebd1ca8.Learn more about proxy contracts in our Knowledge Base
Loading...LoadingABI for the implementation contract at 0x33db8d52d65f75e4cdda1b02463760c9561a2aa1, using the EIP-897 DelegateProxy concept.
Previously recorded to be on 0xb248c975daeac47c4960ecbd10a79e486ebd1ca8.Learn more about proxy contracts in our Knowledge Base
Loading...LoadingLoading...LoadingLoading...LoadingLoading...LoadingLoading...LoadingOVERVIEW
Origin Dollar (OUSD) is a stablecoin that earns yield while it's still in your wallet. It was created by the team at Origin Protocol (OGN).
Loading...Loading[ Download: CSV Export ]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.
Address QR Code
My Address - Private Name Tag or Note
My Name Tag:
Private Name Tags (up to 35 characters) can be used for easy identification of addressesPrivate Note:
A private note (up to 500 characters) can be attached to this address.
Please DO NOT store any passwords or private keys here.Compiler specific version warnings:
The compiled contract might be susceptible to AbiReencodingHeadOverflowWithStaticArrayCleanup (medium-severity), DirtyBytesArrayToStorage (low-severity), NestedCalldataArrayAbiReencodingSizeValidation (very low-severity), ABIDecodeTwoDimensionalArrayMemory (very low-severity), EmptyByteArrayCopy (medium-severity), DynamicArrayCleanup (medium-severity), ImplicitConstructorCallvalueCheck (very low-severity), TupleAssignmentMultiStackSlotComponents (very low-severity), MemoryArrayCreationOverflow (low-severity), privateCanBeOverridden (low-severity), YulOptimizerRedundantAssignmentBreakContinue0.5 (low-severity) Solidity Compiler Bugs.
Connect a Wallet
Connecting wallet for read function is optional, useful if you want to call certain functions or simply use your wallet's node.Connect a Wallet
Connecting wallet for read function is optional, useful if you want to call certain functions or simply use your wallet's node.Connect a Wallet
Connecting wallet for read function is optional, useful if you want to call certain functions or simply use your wallet's node.Before You Copy
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