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Contract

0xE4C1fE630b096f19cE8E55a4888e8d8e1e1dd0bF
 

Overview

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0 ETH

ETH Value

$0.00

Token Holdings

Multichain Info

1 address found via
Transaction Hash
Method
Block
From
To
Approve152744972025-02-12 11:13:2970 days ago1739358809IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000060.00140865
Transfer152492802025-02-11 21:12:5570 days ago1739308375IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000090.00195785
Approve142121732025-01-18 21:02:4194 days ago1737234161IN
0xE4C1fE63...e1e1dd0bF
0 ETH00.00000031
Approve101471832024-10-16 18:43:01188 days ago1729104181IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000080.00369517
Approve101471812024-10-16 18:42:57188 days ago1729104177IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000080.00369659
Approve101471802024-10-16 18:42:55188 days ago1729104175IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000080.00370164
Approve94499952024-09-30 15:23:25204 days ago1727709805IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000060.00272008
Approve94499432024-09-30 15:21:41204 days ago1727709701IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000160.00676496
Approve59217542024-07-10 23:15:23286 days ago1720653323IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000140.0032
Approve55856242024-07-03 4:31:03294 days ago1719981063IN
0xE4C1fE63...e1e1dd0bF
0 ETH00.00001401
Approve49452152024-06-18 8:44:05309 days ago1718700245IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000006950.15053072
Approve33858492024-05-13 6:25:13345 days ago1715581513IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.00000020.00440241
Transfer31778902024-05-08 10:53:15350 days ago1715165595IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000077341.52002859
Transfer31777842024-05-08 10:49:43350 days ago1715165383IN
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0 ETH0.000077331.51980301
Transfer31777812024-05-08 10:49:37350 days ago1715165377IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000077311.51981116
Transfer31665602024-05-08 4:35:35350 days ago1715142935IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000077281.51928942
Approve24824042024-04-22 8:30:23366 days ago1713774623IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000030.0013
Approve24225502024-04-20 23:15:15367 days ago1713654915IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000020.0011
Approve24035152024-04-20 12:40:45368 days ago1713616845IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000650.01399999
Approve20696232024-04-12 19:11:01375 days ago1712949061IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000004640.10000088
Approve15967532024-04-01 20:28:41386 days ago1712003321IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000040.00086787
Approve15613692024-04-01 0:49:13387 days ago1711932553IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000030.00070432
Approve14652072024-03-29 19:23:49389 days ago1711740229IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000050.00125819
Approve14419942024-03-29 6:30:03390 days ago1711693803IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000000040.00094122
Approve14232192024-03-28 20:04:13390 days ago1711656253IN
0xE4C1fE63...e1e1dd0bF
0 ETH0.000004640.10000031
View all transactions

Latest 1 internal transaction

Parent Transaction Hash Block From To
7426852024-03-13 1:59:45406 days ago1710295185  Contract Creation0 ETH

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Contract Source Code Verified (Exact Match)

Contract Name:
BlackBox

Compiler Version
v0.8.21+commit.d9974bed

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion
File 1 of 3 : BB.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {ERC20} from "solmate/tokens/ERC20.sol";
import {Owned} from "solmate/auth/Owned.sol";

contract BlackBox is ERC20, Owned {
  bool public tradingEnabled = false;
  uint256 public maxTransferAmount;
  uint256 public maxTransferAmountRestrictionEnd;

  constructor(address deployer, uint256 supply) ERC20("Black Box", "BB", 18) Owned(deployer) {
    _mint(deployer, supply);
    maxTransferAmount = totalSupply / 100;
  }

  function renounceOwnership() external onlyOwner {
    tradingEnabled = true;
    maxTransferAmountRestrictionEnd = block.timestamp + 1 hours;
    transferOwnership(address(0));
  }

  function removeMaxTransferAmountLimit() external {
    require(block.timestamp >= maxTransferAmountRestrictionEnd);
    maxTransferAmount = type(uint256).max;
  }

  function transfer(address to, uint256 amount) public override returns (bool) {
      require(tradingEnabled || msg.sender == owner);
      require(amount < maxTransferAmount || msg.sender == owner);

      balanceOf[msg.sender] -= amount;

      // Cannot overflow because the sum of all user
      // balances can't exceed the max uint256 value.
      unchecked {
          balanceOf[to] += amount;
      }

      emit Transfer(msg.sender, to, amount);

      return true;
  }

  function transferFrom(
      address from,
      address to,
      uint256 amount
  ) public override returns (bool) {
      require(tradingEnabled || tx.origin == owner);
      require(amount < maxTransferAmount || tx.origin == owner);

      uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

      if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

      balanceOf[from] -= amount;

      // Cannot overflow because the sum of all user
      // balances can't exceed the max uint256 value.
      unchecked {
          balanceOf[to] += amount;
      }

      emit Transfer(from, to, amount);

      return true;
  }
}

File 2 of 3 : ERC20.sol
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(address indexed owner, address indexed spender, uint256 amount);

    /*//////////////////////////////////////////////////////////////
                            METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*//////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*//////////////////////////////////////////////////////////////
                            EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*//////////////////////////////////////////////////////////////
                               ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*//////////////////////////////////////////////////////////////
                             EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}

File 3 of 3 : Owned.sol
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;

/// @notice Simple single owner authorization mixin.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/auth/Owned.sol)
abstract contract Owned {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event OwnershipTransferred(address indexed user, address indexed newOwner);

    /*//////////////////////////////////////////////////////////////
                            OWNERSHIP STORAGE
    //////////////////////////////////////////////////////////////*/

    address public owner;

    modifier onlyOwner() virtual {
        require(msg.sender == owner, "UNAUTHORIZED");

        _;
    }

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(address _owner) {
        owner = _owner;

        emit OwnershipTransferred(address(0), _owner);
    }

    /*//////////////////////////////////////////////////////////////
                             OWNERSHIP LOGIC
    //////////////////////////////////////////////////////////////*/

    function transferOwnership(address newOwner) public virtual onlyOwner {
        owner = newOwner;

        emit OwnershipTransferred(msg.sender, newOwner);
    }
}

Settings
{
  "remappings": [
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "solmate/=lib/solmate/src/",
    "@uniswap/v3-core/=lib/v3-core/contracts/",
    "@uniswap/v3-periphery/=lib/v3-periphery/contracts/",
    "openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "v3-core/=lib/v3-core/",
    "v3-periphery/=lib/v3-periphery/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "libraries": {}
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"address","name":"deployer","type":"address"},{"internalType":"uint256","name":"supply","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxTransferAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxTransferAmountRestrictionEnd","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"removeMaxTransferAmountLimit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tradingEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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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)

000000000000000000000000ebb17c3a14aff180fc88bd61ca4dfd55e5a35a8f00000000000000000000000000000000000000000000d3c21bcecceda1000000

-----Decoded View---------------
Arg [0] : deployer (address): 0xEbb17c3a14AfF180fC88BD61Ca4dfd55E5A35A8f
Arg [1] : supply (uint256): 1000000000000000000000000

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000ebb17c3a14aff180fc88bd61ca4dfd55e5a35a8f
Arg [1] : 00000000000000000000000000000000000000000000d3c21bcecceda1000000


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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.