無法驗證以相同方式簽名的兩個簽名之一

我有一份需要兩名證人簽字的契約。簽名都是使用相同的程式碼生成的，但我只能驗證見證 A。永遠找不到見證 B，總是出於某種原因只獲得零地址。

生成簽名的 JavaScript （以見證 A 為例）：

const hash = "0x" + ethereumjsabi
 .soliditySHA3(
   ["address", "uint256", "string", "address"],
   [
     "0xfCab1090e039D4B44c3862F46b7d55bC256AB041",
     10000000,
     "PJUbjAc4oNTkafj6xV2R8kRYDB9MjK2vuu",
     "0x8809465617E09405a1af06C2d93C2bcE0Ce5Ac80",
   ]
 )
 .toString("hex");

const signature = await this.web3.eth.personal.sign(hash, "0x8809465617E09405a1af06C2d93C2bcE0Ce5Ac80");

驗證簽名的可靠性：

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;
import "remix_tests.sol"; // this import is automatically injected by Remix.

contract VerificationTest {

   function prefixed(bytes32 hash) internal pure returns (bytes32) {
       return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
   }

   function checkIt () public {
       bytes memory witnessASignature = hex"8ee674e7c0105a914066d3554ee62a89f07a7a56ad5697695969b3219d8dc9da459d6f290db10b27a374010fb0abc5984dfeb8b380aa8f3564d4361217535e461b";
       bytes memory witnessBSignature = hex"8e474293656af3b93f36169062adeee942d0f2a5450d80110dcb8943863570a96312cdb64030ad3b12203755ac6a597798bede06667e95a7d3d5b3f3bed15b5e01";

       require(witnessASignature.length == 65, "invalid signature A length");
       require(witnessBSignature.length == 65, "invalid signature B length");

       bytes32 _ar;
       bytes32 _as;
       uint8 _av;

       assembly {
           _ar := mload(add(witnessASignature, 32))
           _as := mload(add(witnessASignature, 64))
           _av := byte(0, mload(add(witnessASignature, 96)))
       }

       bytes32 _br;
       bytes32 _bs;
       uint8 _bv;

       assembly {
           _br := mload(add(witnessBSignature, 32))
           _bs := mload(add(witnessBSignature, 64))
           _bv := byte(0, mload(add(witnessBSignature, 96)))
       }

       address witnessAAddress = 0x8809465617E09405a1af06C2d93C2bcE0Ce5Ac80;
       address witnessBAddress = 0x71eb10a6566cCA81Dd2892d36c55359AfedD3CFA;

       uint256 _amount = 10000000;
       string memory _externalAddress = "mi4VcxS4dsw9PzFAeTFJD17v2B7i24eMfQ";

       Assert.equal(ecrecover(prefixed(keccak256(abi.encodePacked(0xfCab1090e039D4B44c3862F46b7d55bC256AB041, _amount, _externalAddress, witnessAAddress))), _av, _ar, _as), witnessAAddress, "A not equal!");
       Assert.equal(ecrecover(prefixed(keccak256(abi.encodePacked(0xfCab1090e039D4B44c3862F46b7d55bC256AB041, _amount, _externalAddress, witnessBAddress))), _bv, _br, _bs), witnessBAddress, "B not equal!");
   }
}

好的，隨著 Ismael 關於錯誤v值的評論，第一個 B 證人意識到發生了什麼。他正在使用一個分類帳，該分類帳設置為乙太坊主網。我們正在討論這個問題的人記得這個v值是基於網路的，所以我們很快就看到了這個問題。

引用自：https://ethereum.stackexchange.com/questions/114439