Address Contract Verified
Address
0x2512c545A0117353e4E9aCDdfF860342640d3CF6
Balance
0 ETH
Nonce
1
Code Size
3014 bytes
Creator
0x861E3c82...6700 at tx 0x7ba397fe...3f5cd5
Indexed Transactions
0
Contract Bytecode
3014 bytes
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
Verified Source Code Full Match
Compiler: v0.8.12+commit.f00d7308
EVM: london
Optimization: Yes (200 runs)
BRC20.sol 115 lines
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./interfaces/IBRC20Factory.sol";
contract BRC20 {
string public name;
string public symbol;
uint8 public immutable decimals;
address public immutable factory;
uint256 public totalSupply;
mapping (address => uint256) public balanceOf;
mapping (address => mapping(address => uint256)) public allowance;
mapping (address => uint256) public nonces;
bytes32 public DOMAIN_SEPARATOR;
bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
constructor() {
(name, symbol, decimals) = IBRC20Factory(msg.sender).parameters();
factory = msg.sender;
uint256 chainId;
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), keccak256(bytes('1')), chainId, address(this)));
}
function mint(address to, uint256 amount) external {
require(msg.sender == factory, "unauthorized");
_mint(to, amount);
}
function burn(uint256 amount) external {
require(msg.sender == factory, "unauthorized");
_burn(msg.sender, amount);
}
function approve(address spender, uint256 amount) external returns (bool) {
allowance[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function transfer(address to, uint256 amount) external returns (bool) {
balanceOf[msg.sender] -= amount;
unchecked {
balanceOf[to] += amount;
}
emit Transfer(msg.sender, to, amount);
return true;
}
function transferFrom(address from, address to, uint256 amount) external returns (bool) {
uint256 allowed = allowance[from][msg.sender];
if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;
balanceOf[from] -= amount;
unchecked {
balanceOf[to] += amount;
}
emit Transfer(from, to, amount);
return true;
}
function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external {
require(deadline >= block.timestamp, 'EXPIRED');
unchecked {
bytes32 digest = keccak256(
abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, 'INVALID_SIGNATURE');
allowance[recoveredAddress][spender] = value;
}
emit Approval(owner, spender, value);
}
function _mint(address to, uint256 amount) internal {
totalSupply += amount;
unchecked {
balanceOf[to] += amount;
}
emit Transfer(address(0), to, amount);
}
function _burn(address from, uint256 amount) internal {
balanceOf[from] -= amount;
unchecked {
totalSupply -= amount;
}
emit Transfer(from, address(0), amount);
}
}
IBRC20Factory.sol 8 lines
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IBRC20Factory {
function parameters() external view returns (string memory name, string memory symbol, uint8 decimals);
}
Read Contract
DOMAIN_SEPARATOR 0x3644e515 → bytes32
DOMAIN_TYPEHASH 0x20606b70 → bytes32
PERMIT_TYPEHASH 0x30adf81f → bytes32
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
decimals 0x313ce567 → uint8
factory 0xc45a0155 → address
name 0x06fdde03 → string
nonces 0x7ecebe00 → uint256
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256
Write Contract 6 functions
These functions modify contract state and require a wallet transaction to execute.
approve 0x095ea7b3
address spender
uint256 amount
returns: bool
burn 0x42966c68
uint256 amount
mint 0x40c10f19
address to
uint256 amount
permit 0xd505accf
address owner
address spender
uint256 value
uint256 deadline
uint8 v
bytes32 r
bytes32 s
transfer 0xa9059cbb
address to
uint256 amount
returns: bool
transferFrom 0x23b872dd
address from
address to
uint256 amount
returns: bool
Recent Transactions
No transactions found for this address