ether余额

https://api-cn.etherscan.com/api?module=account&action=balance&address=地址&tag=latest&apikey=key

代币usdt余额

https://api-cn.etherscan.com/api?module=account&action=tokenbalance&contractaddress=代币合约&address=地址&tag=latest&apikey=key

交易状态hash

https://api-cn.etherscan.com/api?module=transaction&action=gettxreceiptstatus&txhash=哈希&apikey=key