pragma solidity ^0.8.0;
contract IOYToken {
    mapping(address => uint256) balances;
    function transfer(address to, uint256 amount) public {
        balances[msg.sender] -= amount;
        balances[to] += amount;
    }
}

// IOY智能合约部署
const contract = new web3.eth.Contract(abi, address);
await contract.methods.stake(amount).send({from: account});

// BSC链上交易验证
function verifyTransaction(txHash) {
    return web3.eth.getTransaction(txHash);
}