Address Contract Partially Verified
Address
0x90cE98B1Fa6BA1e958f5850Cd54404a35Fb4f8a8
Balance
0.010000 ETH ($19.49)
Nonce
1
Code Size
7726 bytes
Creator
0xB7e4eaEd...27d2 at tx 0x18d96430...9911e0
Indexed Transactions
0 (1 on-chain, 1.6% indexed)
Contract Bytecode
7726 bytes
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Verified Source Code Partial Match
Compiler: v0.8.26+commit.8a97fa7a
EVM: cancun
Optimization: No
AMM.sol 123 lines
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
interface IERC20 {
function transfer(address recipient, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
function balanceOf(address account) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
}
contract AMM {
address public owner;
IERC20 public usdtToken;
uint256 public reserve0; // ETH Reserve
uint256 public reserve1; // USDT Reserve
event LiquidityAdded(address indexed user, uint256 amount0, uint256 amount1);
event LiquidityRemoved(address indexed user, uint256 amount0, uint256 amount1);
event Swap(address indexed user, uint256 amountIn, uint256 amountOut, bool isEthToUsdt);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event Withdrawal(address indexed user, uint256 amount, bool isETH);
modifier onlyOwner() {
require(msg.sender == owner, "Not the contract owner");
_;
}
constructor(address _usdtToken) {
require(_usdtToken != address(0), "Invalid USDT token address");
owner = msg.sender;
usdtToken = IERC20(_usdtToken);
emit OwnershipTransferred(address(0), owner);
}
function transferOwnership(address newOwner) external onlyOwner {
require(newOwner != address(0), "New owner cannot be zero address");
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
function addLiquidity(uint256 amount0, uint256 amount1) external payable onlyOwner {
require(amount0 > 0 && amount1 > 0, "Amounts must be greater than 0");
require(msg.value == amount0, "ETH amount mismatch");
require(usdtToken.transferFrom(msg.sender, address(this), amount1), "USDT transfer failed");
reserve0 += amount0;
reserve1 += amount1;
emit LiquidityAdded(msg.sender, amount0, amount1);
}
function removeLiquidity(uint256 amount0, uint256 amount1) external onlyOwner {
require(amount0 <= reserve0 && amount1 <= reserve1, "Not enough reserves");
// Update reserves before transfers (reentrancy protection)
reserve0 -= amount0;
reserve1 -= amount1;
// Transfer ETH safely
(bool sent, ) = msg.sender.call{value: amount0}("");
require(sent, "ETH transfer failed");
require(usdtToken.transfer(msg.sender, amount1), "USDT transfer failed");
emit LiquidityRemoved(msg.sender, amount0, amount1);
}
function getReserves() external view returns (uint256, uint256) {
return (reserve0, reserve1);
}
function swap(uint256 amountIn, bool isEthToUsdt, uint256 minAmountOut) external payable returns (uint256 amountOut) {
require(amountIn > 0, "Amount must be greater than 0");
if (isEthToUsdt) {
require(msg.value == amountIn, "ETH amount mismatch");
require(reserve0 >= amountIn, "Not enough ETH liquidity");
amountOut = (amountIn * reserve1) / reserve0;
require(amountOut >= minAmountOut, "Slippage exceeded");
// Update reserves first
reserve0 += amountIn;
reserve1 -= amountOut;
require(usdtToken.transfer(msg.sender, amountOut), "USDT transfer failed");
} else {
require(usdtToken.allowance(msg.sender, address(this)) >= amountIn, "USDT allowance too low");
require(usdtToken.transferFrom(msg.sender, address(this), amountIn), "USDT transfer failed");
require(reserve1 >= amountIn, "Not enough USDT liquidity");
amountOut = (amountIn * reserve0) / reserve1;
require(amountOut >= minAmountOut, "Slippage exceeded");
// Update reserves first
reserve1 += amountIn;
reserve0 -= amountOut;
(bool sent, ) = msg.sender.call{value: amountOut}("");
require(sent, "ETH transfer failed");
}
emit Swap(msg.sender, amountIn, amountOut, isEthToUsdt);
return amountOut;
}
function withdraw(uint256 amount, bool isETH) external onlyOwner {
if (isETH) {
require(amount <= reserve0, "Not enough ETH reserves");
reserve0 -= amount;
(bool sent, ) = msg.sender.call{value: amount}("");
require(sent, "ETH transfer failed");
} else {
require(amount <= reserve1, "Not enough USDT reserves");
reserve1 -= amount;
require(usdtToken.transfer(msg.sender, amount), "USDT transfer failed");
}
emit Withdrawal(msg.sender, amount, isETH);
}
receive() external payable {}
}
Read Contract
getReserves 0x0902f1ac → uint256, uint256
owner 0x8da5cb5b → address
reserve0 0x443cb4bc → uint256
reserve1 0x5a76f25e → uint256
usdtToken 0xa98ad46c → address
Write Contract 5 functions
These functions modify contract state and require a wallet transaction to execute.
addLiquidity 0x9cd441da
uint256 amount0
uint256 amount1
removeLiquidity 0x9d7de6b3
uint256 amount0
uint256 amount1
swap 0x4312ae31
uint256 amountIn
bool isEthToUsdt
uint256 minAmountOut
returns: uint256
transferOwnership 0xf2fde38b
address newOwner
withdraw 0x38d07436
uint256 amount
bool isETH
Recent Transactions
This address has 1 on-chain transactions, but only 1.6% of the chain is indexed. Transactions will appear as indexing progresses. View on Etherscan →