Address Contract Verified
Address
0x02aFfe1f30f3D93B2C459e382f8265819B3649Cb
Balance
0 ETH
Nonce
1
Code Size
9452 bytes
Creator
0x73F53D3F...144e at tx 0x2dc74bff...8ffd4c
Indexed Transactions
0
Contract Bytecode
9452 bytes
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Verified Source Code Full Match
Compiler: v0.8.33+commit.64118f21
EVM: osaka
Optimization: No
TetherToken.sol 135 lines
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
contract TetherToken {
string public name = "Tether USD";
string public symbol = "USDT";
uint8 public constant decimals = 6;
uint256 private _totalSupply;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 public basisPointsRate = 0;
uint256 public maximumFee = 0;
bool public paused = false;
mapping(address => bool) public isBlackListed;
address public owner;
address public feeCollector;
address public upgradedAddress;
bool public deprecated;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Pause();
event Unpause();
event AddedBlackList(address indexed user);
event RemovedBlackList(address indexed user);
event DestroyedBlackFunds(address indexed blackListedUser, uint256 balance);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event FeeCollected(address indexed from, uint256 fee, uint256 netAmount);
event Upgraded(address indexed newAddress);
modifier onlyOwner() { require(msg.sender == owner, "Not owner"); _; }
modifier whenNotPaused() { require(!paused, "Paused"); _; }
modifier onlyPayloadSize(uint256 size) { require(msg.data.length >= size + 4); _; }
constructor(uint256 initialSupply) {
owner = msg.sender;
feeCollector = msg.sender;
_totalSupply = initialSupply * 10**uint256(decimals);
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function totalSupply() public view returns (uint256) { return _totalSupply; }
function balanceOf(address account) public view returns (uint256) { return _balances[account]; }
function _calculateFee(uint256 amount) internal view returns (uint256 fee, uint256 netAmount) {
fee = (amount * basisPointsRate) / 10000;
if (fee > maximumFee) fee = maximumFee;
netAmount = amount - fee;
}
function transfer(address to, uint256 amount) public whenNotPaused onlyPayloadSize(2 * 32) returns (bool) {
require(!isBlackListed[msg.sender] && !isBlackListed[to] && to != address(0), "Invalid transfer");
(uint256 fee, uint256 netAmount) = _calculateFee(amount);
_balances[msg.sender] -= amount;
_balances[to] += netAmount;
if (fee > 0) _balances[feeCollector] += fee;
emit Transfer(msg.sender, to, netAmount);
if (fee > 0) {
emit FeeCollected(msg.sender, fee, netAmount);
emit Transfer(msg.sender, feeCollector, fee);
}
return true;
}
function allowance(address tokenOwner, address spender) public view returns (uint256) {
return _allowances[tokenOwner][spender];
}
function approve(address spender, uint256 amount) public onlyPayloadSize(2 * 32) returns (bool) {
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function transferFrom(address from, address to, uint256 amount)
public whenNotPaused onlyPayloadSize(3 * 32) returns (bool) {
require(!isBlackListed[from] && !isBlackListed[to], "Blacklisted");
uint256 currAllowance = _allowances[from][msg.sender];
require(currAllowance >= amount, "Insufficient allowance");
if (currAllowance != type(uint256).max) _allowances[from][msg.sender] -= amount;
(uint256 fee, uint256 netAmount) = _calculateFee(amount);
_balances[from] -= amount;
_balances[to] += netAmount;
if (fee > 0) _balances[feeCollector] += fee;
emit Transfer(from, to, netAmount);
if (fee > 0) {
emit FeeCollected(from, fee, netAmount);
emit Transfer(from, feeCollector, fee);
}
return true;
}
function pause() external onlyOwner { paused = true; emit Pause(); }
function unpause() external onlyOwner { paused = false; emit Unpause(); }
function addBlackList(address evilUser) external onlyOwner {
isBlackListed[evilUser] = true;
uint256 dirtyFunds = balanceOf(evilUser);
if (dirtyFunds > 0) {
_balances[evilUser] = 0;
_totalSupply -= dirtyFunds;
emit DestroyedBlackFunds(evilUser, dirtyFunds);
}
emit AddedBlackList(evilUser);
}
function removeBlackList(address clearedUser) external onlyOwner {
isBlackListed[clearedUser] = false;
emit RemovedBlackList(clearedUser);
}
function setBasisPointsRate(uint256 newRate) external onlyOwner { basisPointsRate = newRate; }
function setMaximumFee(uint256 newMaxFee) external onlyOwner { maximumFee = newMaxFee; }
function setFeeCollector(address newCollector) external onlyOwner { feeCollector = newCollector; }
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0), "Zero address");
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
function upgrade(address newAddress) external onlyOwner {
deprecated = true;
upgradedAddress = newAddress;
emit Upgraded(newAddress);
}
receive() external payable { revert("No ETH"); }
}
Read Contract
allowance 0xdd62ed3e → uint256
balanceOf 0x70a08231 → uint256
basisPointsRate 0xdd644f72 → uint256
decimals 0x313ce567 → uint8
deprecated 0x0e136b19 → bool
feeCollector 0xc415b95c → address
isBlackListed 0xe47d6060 → bool
maximumFee 0x35390714 → uint256
name 0x06fdde03 → string
owner 0x8da5cb5b → address
paused 0x5c975abb → bool
symbol 0x95d89b41 → string
totalSupply 0x18160ddd → uint256
upgradedAddress 0x26976e3f → address
Write Contract 12 functions
These functions modify contract state and require a wallet transaction to execute.
addBlackList 0x0ecb93c0
address evilUser
approve 0x095ea7b3
address spender
uint256 amount
returns: bool
pause 0x8456cb59
No parameters
removeBlackList 0xe4997dc5
address clearedUser
setBasisPointsRate 0x5fdf2be0
uint256 newRate
setFeeCollector 0xa42dce80
address newCollector
setMaximumFee 0xbd7bcef1
uint256 newMaxFee
transfer 0xa9059cbb
address to
uint256 amount
returns: bool
transferFrom 0x23b872dd
address from
address to
uint256 amount
returns: bool
transferOwnership 0xf2fde38b
address newOwner
unpause 0x3f4ba83a
No parameters
upgrade 0x0900f010
address newAddress
Recent Transactions
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