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Gas: 30 GWei
 

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MATIC Value

$0.00

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BOB (BOB) (@$0.9999)

Multichain Info

1 address found via
Transaction Hash
Method
Block
From
To
Value
Approve583904682024-06-20 13:04:368 hrs ago1718888676IN
BOB: BOB Token
0 MATIC0.0016003531.01157391
Approve583609892024-06-19 19:25:5525 hrs ago1718825155IN
BOB: BOB Token
0 MATIC0.0011753437.00121211
Approve583609882024-06-19 19:25:5325 hrs ago1718825153IN
BOB: BOB Token
0 MATIC0.0018679736.1554526
Approve583492302024-06-19 12:17:2733 hrs ago1718799447IN
BOB: BOB Token
0 MATIC0.0020604340.10427096
Approve583437632024-06-19 8:59:2736 hrs ago1718787567IN
BOB: BOB Token
0 MATIC0.0012360542.06971085
Approve583213402024-06-18 19:02:492 days ago1718737369IN
BOB: BOB Token
0 MATIC0.0039575376.60000004
Approve582606262024-06-17 6:53:383 days ago1718607218IN
BOB: BOB Token
0 MATIC0.0008834930.0704399
Approve582606242024-06-17 6:53:343 days ago1718607214IN
BOB: BOB Token
0 MATIC0.0008834930.07019613
Approve582586872024-06-17 5:43:523 days ago1718603032IN
BOB: BOB Token
0 MATIC0.0010870937
Approve582285282024-06-16 11:33:134 days ago1718537593IN
BOB: BOB Token
0 MATIC0.000077061.50000002
Approve582006692024-06-15 18:56:155 days ago1718477775IN
BOB: BOB Token
0 MATIC0.0015416730.00000002
Approve581815132024-06-15 7:27:335 days ago1718436453IN
BOB: BOB Token
0 MATIC0.0015435130.05000003
Approve581603462024-06-14 18:30:426 days ago1718389842IN
BOB: BOB Token
0 MATIC0.0017095933.09002527
Approve581482312024-06-14 11:11:076 days ago1718363467IN
BOB: BOB Token
0 MATIC0.0016080431.12437626
Approve581470952024-06-14 10:29:406 days ago1718360980IN
BOB: BOB Token
0 MATIC0.0015942131.02973379
Approve581391302024-06-14 5:32:166 days ago1718343136IN
BOB: BOB Token
0 MATIC0.0154095300
Approve581319202024-06-14 1:15:486 days ago1718327748IN
BOB: BOB Token
0 MATIC0.0015495130.15970387
Approve581277612024-06-13 22:44:446 days ago1718318684IN
BOB: BOB Token
0 MATIC0.0015416730.00000008
Approve581049302024-06-13 9:11:057 days ago1718269865IN
BOB: BOB Token
0 MATIC0.001574930.65393555
Approve580802992024-06-12 18:28:078 days ago1718216887IN
BOB: BOB Token
0 MATIC0.0010577136
Approve580802922024-06-12 18:27:538 days ago1718216873IN
BOB: BOB Token
0 MATIC0.0011164738
Approve580802862024-06-12 18:27:398 days ago1718216859IN
BOB: BOB Token
0 MATIC0.0011164738
Approve580739222024-06-12 14:41:518 days ago1718203311IN
BOB: BOB Token
0 MATIC0.0020763240.40413345
Approve580667742024-06-12 10:28:318 days ago1718188111IN
BOB: BOB Token
0 MATIC0.0015499530.00000007
Approve580634572024-06-12 8:30:578 days ago1718181057IN
BOB: BOB Token
0 MATIC0.0009695733.00000007
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Latest 1 internal transaction

Parent Transaction Hash Block From To Value
328452372022-09-08 12:08:36651 days ago1662638916  Contract Creation0 MATIC
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Contract Source Code Verified (Exact Match)

Contract Name:
EIP1967Proxy

Compiler Version
v0.8.15+commit.e14f2714

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 2 : EIP1967Proxy.sol
// SPDX-License-Identifier: CC0-1.0

pragma solidity 0.8.15;

import "./EIP1967Admin.sol";

/**
 * @title EIP1967Proxy
 * @dev Upgradeable proxy pattern implementation according to minimalistic EIP1967.
 */
contract EIP1967Proxy is EIP1967Admin {
    // EIP 1967
    // bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)
    uint256 internal constant EIP1967_IMPLEMENTATION_STORAGE =
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    event Upgraded(address indexed implementation);
    event AdminChanged(address previousAdmin, address newAdmin);

    constructor(address _admin, address _implementation, bytes memory _data) payable {
        _setAdmin(_admin);
        _setImplementation(_implementation);
        if (_data.length > 0) {
            bool status;
            assembly {
                status := callcode(gas(), _implementation, callvalue(), add(_data, 32), mload(_data), 0, 0)
            }
            require(status, "EIP1967Proxy: initialize call failed");
        }
    }

    /**
     * @dev Tells the proxy admin account address.
     * @return proxy admin address.
     */
    function admin() public view returns (address) {
        return _admin();
    }

    /**
     * @dev Tells the proxy implementation contract address.
     * @return res implementation address.
     */
    function implementation() public view returns (address res) {
        assembly {
            res := sload(EIP1967_IMPLEMENTATION_STORAGE)
        }
    }

    /**
     * @dev Updates address of the proxy owner.
     * Callable only by the proxy admin.
     * @param _admin address of the new proxy admin.
     */
    function setAdmin(address _admin) external onlyAdmin {
        _setAdmin(_admin);
    }

    /**
     * @dev Updates proxy implementation address.
     * Callable only by the proxy admin.
     * @param _implementation address of the new proxy implementation.
     */
    function upgradeTo(address _implementation) external onlyAdmin {
        _setImplementation(_implementation);
    }

    /**
     * @dev Updates proxy implementation address and makes an initialization call to new implementation.
     * Callable only by the proxy admin.
     * @param _implementation address of the new proxy implementation.
     * @param _data calldata to pass through the new implementation after the upgrade.
     */
    function upgradeToAndCall(address _implementation, bytes calldata _data) external payable onlyAdmin {
        _setImplementation(_implementation);
        (bool status,) = address(this).call{value: msg.value}(_data);
        require(status, "EIP1967Proxy: update call failed");
    }

    /**
     * @dev Fallback function allowing to perform a delegatecall to the given implementation.
     * This function will return whatever the implementation call returns
     */
    fallback() external payable {
        address impl = implementation();
        require(impl != address(0));
        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(), impl, 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 Internal function for transfer current admin rights to a different account.
     * @param _admin address of the new administrator.
     */
    function _setAdmin(address _admin) internal {
        address previousAdmin = admin();
        require(_admin != address(0));
        require(previousAdmin != _admin);
        assembly {
            sstore(EIP1967_ADMIN_STORAGE, _admin)
        }
        emit AdminChanged(previousAdmin, _admin);
    }

    /**
     * @dev Internal function for setting a new implementation address.
     * @param _implementation address of the new implementation contract.
     */
    function _setImplementation(address _implementation) internal {
        require(_implementation != address(0));
        require(implementation() != _implementation);
        assembly {
            sstore(EIP1967_IMPLEMENTATION_STORAGE, _implementation)
        }
        emit Upgraded(_implementation);
    }
}

File 2 of 2 : EIP1967Admin.sol
// SPDX-License-Identifier: CC0-1.0

pragma solidity 0.8.15;

/**
 * @title EIP1967Admin
 * @dev Upgradeable proxy pattern implementation according to minimalistic EIP1967.
 */
contract EIP1967Admin {
    // EIP 1967
    // bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1)
    uint256 internal constant EIP1967_ADMIN_STORAGE = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    modifier onlyAdmin() {
        require(msg.sender == _admin(), "EIP1967Admin: not an admin");
        _;
    }

    function _admin() internal view returns (address res) {
        assembly {
            res := sload(EIP1967_ADMIN_STORAGE)
        }
    }
}

Settings
{
  "remappings": [
    "@gnosis/=lib/@gnosis/",
    "@gnosis/auction/=lib/@gnosis/auction/contracts/",
    "@openzeppelin/=lib/@openzeppelin/contracts/",
    "@openzeppelin/contracts/=lib/@openzeppelin/contracts/contracts/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_admin","type":"address"},{"internalType":"address","name":"_implementation","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"res","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_admin","type":"address"}],"name":"setAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_implementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_implementation","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"}]

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Deployed Bytecode

0x60806040526004361061004a5760003560e01c80633659cfe61461009d5780634f1ef286146100bd5780635c60da1b146100d0578063704b6c021461010a578063f851a4401461012a575b60006100626000805160206105478339815191525490565b90506001600160a01b03811661007757600080fd5b3660008037600080366000845af43d6000803e808015610096573d6000f35b3d6000fd5b005b3480156100a957600080fd5b5061009b6100b836600461043a565b61013f565b61009b6100cb36600461045c565b610194565b3480156100dc57600080fd5b50600080516020610547833981519152545b6040516001600160a01b03909116815260200160405180910390f35b34801561011657600080fd5b5061009b61012536600461043a565b610293565b34801561013657600080fd5b506100ee6102dc565b600080516020610527833981519152546001600160a01b0316336001600160a01b0316146101885760405162461bcd60e51b815260040161017f906104df565b60405180910390fd5b610191816102f9565b50565b600080516020610527833981519152546001600160a01b0316336001600160a01b0316146101d45760405162461bcd60e51b815260040161017f906104df565b6101dd836102f9565b6000306001600160a01b03163484846040516101fa929190610516565b60006040518083038185875af1925050503d8060008114610237576040519150601f19603f3d011682016040523d82523d6000602084013e61023c565b606091505b505090508061028d5760405162461bcd60e51b815260206004820181905260248201527f4549503139363750726f78793a207570646174652063616c6c206661696c6564604482015260640161017f565b50505050565b600080516020610527833981519152546001600160a01b0316336001600160a01b0316146102d35760405162461bcd60e51b815260040161017f906104df565b61019181610388565b60006102f46000805160206105278339815191525490565b905090565b6001600160a01b03811661030c57600080fd5b806001600160a01b031661032c6000805160206105478339815191525490565b6001600160a01b03160361033f57600080fd5b6000805160206105478339815191528190556040516001600160a01b038216907fbc7cd75a20ee27fd9adebab32041f755214dbc6bffa90cc0225b39da2e5c2d3b90600090a250565b60006103926102dc565b90506001600160a01b0382166103a757600080fd5b816001600160a01b0316816001600160a01b0316036103c557600080fd5b600080516020610527833981519152829055604080516001600160a01b038084168252841660208201527f7e644d79422f17c01e4894b5f4f588d331ebfa28653d42ae832dc59e38c9798f910160405180910390a15050565b80356001600160a01b038116811461043557600080fd5b919050565b60006020828403121561044c57600080fd5b6104558261041e565b9392505050565b60008060006040848603121561047157600080fd5b61047a8461041e565b9250602084013567ffffffffffffffff8082111561049757600080fd5b818601915086601f8301126104ab57600080fd5b8135818111156104ba57600080fd5b8760208285010111156104cc57600080fd5b6020830194508093505050509250925092565b6020808252601a908201527f4549503139363741646d696e3a206e6f7420616e2061646d696e000000000000604082015260600190565b818382376000910190815291905056feb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbca26469706673582212203a120e4dd5f0849a0b6e92c874b8ff4e42363c90d20d52f4cac638a68ae33dcb64736f6c634300080f0033

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000039f0bd56c1439a22ee90b4972c16b7868d161981000000000000000000000000000000000000000000000000000000000000dead00000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _admin (address): 0x39F0bD56c1439a22Ee90b4972c16b7868D161981
Arg [1] : _implementation (address): 0x000000000000000000000000000000000000dEaD
Arg [2] : _data (bytes): 0x

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 00000000000000000000000039f0bd56c1439a22ee90b4972c16b7868d161981
Arg [1] : 000000000000000000000000000000000000000000000000000000000000dead
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000000


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OVERVIEW

BOB is a stablecoin fully collateralized by USDC. BOB features novel DeFi use-cases intended to generate additional yield for active participants of the Bob Protocol. BOB token is an exclusive asset for zkBob, a privacy preserving protocol for stable transfers.

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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.