i learning solidity. i test blockhash(block.number) function in local and test net .
the code is
// SPDX-License-Identifier: SimPL-3.0
pragma solidity ^0.8.0;
contract BlockTest2{
function test2() public view returns(bytes32 b46,uint number45){//当前blockhash 返回是0 原因未知
number45 = block.number; // 当前区块号
b46=blockhash(number45);
}
}
the result is
Best Answer
The blockhash of the current block is always
0
(ethereum yellow paper page 33).If you want a meaningful result, try
number45 = block.number-1
.