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1 // SPDX-License-Identifier: MIT
2 pragma solidity ^0.8.20;
3
4 contract UnitedChain {
5 mapping(address => uint256) balances;
6
7 event Transfer(
8 address indexed from,
9 address indexed to,
10 uint256 amount
11 );
12
13 function transfer(address _to, uint256 _amount) external {
14 require(balances[msg.sender] >= _amount);
15 balances[msg.sender] -= _amount;
16 balances[_to] += _amount;
17 emit Transfer(msg.sender, _to, _amount);
18 }
19 }
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