blockTag usage

[PedroReyes]

Ethers Version

5.6.9

Search Terms

blockTag

Describe the Problem

Hello,

👁 Context

I am trying to get the return value of a method at a specific block following the next documentation:

• https://docs.ethers.io/v5/api/providers/types/#providers-BlockTag
• https://docs.ethers.io/v5/api/providers/provider/#Provider--transaction-methods

💻 System setup

• OS: Windows 10
• node: v18.2.0
• npm 8.9.0
• ethers: 5.6.9

🔁 Reproduction

// We require the Hardhat Runtime Environment explicitly here. This is optional
// but useful for running the script in a standalone fashion through `node <script>`.
//
// When running the script with `npx hardhat run <script>` you'll find the Hardhat
// Runtime Environment's members available in the global scope.
const { ethers } = require("hardhat");
const hre = require("hardhat");

async function main() {
  console.log(`💻 Network: ${hre.network.name}`);

  // 👁‍🗨 Address we retrieve the data from
  let userAddress = "0xd0a111d4349aad1f8ce82e61d5c8c2beac6b2e92";
  console.log(`👀  Retrieving data from ${userAddress}...`);

  // 👉 Contracts
  const nbuContract = await hre.ethers.getContractAt(
    "NBU",
    "0x5f20559235479F5B6abb40dFC6f55185b74E7b55"
  );

  const gnbuContract = await hre.ethers.getContractAt(
    "GNBU",
    "0xA4d872235dde5694AF92a1d0df20d723E8e9E5fC"
  );

  // 🔨 Get accounts
  let [hacker, _, tester] = await hre.ethers.getSigners();
  hacker = tester;

  // 👁‍🗨 Get data from contract (alt1)
  if (false) {
    let gnbuBalanceAlt1 = await hre.ethers.provider.call(
      await gnbuContract.populateTransaction.balanceOf(userAddress),
      (blockTag = 20260300)
    );
    console.log(`📗 GNBU balance (alt1):\n ${gnbuBalanceAlt1} \n`);
  }

  // 👁‍🗨 Get data from contract (alt2)
  if (false) {
    let gnbuBalanceAlt2 = await gnbuContract.balanceOf(userAddress, {
      // blockTag: 3412629,
      blockTag: 20260300,
    });
    console.log(`📗 GNBU balance (alt2):\n ${gnbuBalanceAlt2} \n`);
  }

  // 👁‍🗨 Get data from contract (alt3)
  if (false) {
    let gnbuBalanceAlt3 = await ethers.provider.getStorageAt(
      gnbuContract.address,
      1,
      (blockTag = 3412629)
    );
    console.log(`📗 GNBU balance (alt3):\n ${gnbuBalanceAlt3} \n`);
    gnbuBalanceAlt3 = ethers.utils.parseBytes32String(gnbuBalanceAlt3);
    console.log(`📗 GNBU balance (alt3):\n ${gnbuBalanceAlt3} \n`);
  }
}

// We recommend this pattern to be able to use async/await everywhere
// and properly handle errors.
main()
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });

❌ Problem

For the next cases I am getting an error in BSC using a NodeReal archive node (https://meganode.nodereal.io/app/dashboard):

• blockTag: 3412629
• blockTag: 20260300
• blockTag: "earliest"
• blockTag: -1000

The error response I am getting:

Error: missing revert data in call exception; Transaction reverted without a reason string [ See: https://links.ethers.org/v5-errors-CALL_EXCEPTION ] (data="0x", transaction={"from":"0xd299d4C11A1FA966a2E97B89e03DA42029c61152","to":"0xA4d872235dde5694AF92a1d0df20d723E8e9E5fC","data":"0x313ce567","accessList":null}, error={"name":"ProviderError","code":-32000,"_isProviderError":true}, code=CALL_EXCEPTION, version=providers/5.6.8)
    at Logger.makeError (C:\blockchain\ethernaut\node_modules\@ethersproject\logger\src.ts\index.ts:261:28)
    at Logger.throwError (C:\blockchain\ethernaut\node_modules\@ethersproject\logger\src.ts\index.ts:273:20)
    at checkError (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\src.ts\json-rpc-provider.ts:66:16)
    at EthersProviderWrapper.<anonymous> (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\src.ts\json-rpc-provider.ts:603:20)
    at step (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:48:23)
    at Object.throw (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:29:53)
    at rejected (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:21:65)
    at processTicksAndRejections (node:internal/process/task_queues:96:5) { 
  reason: 'missing revert data in call exception; Transaction reverted without a reason string',
  code: 'CALL_EXCEPTION',
  data: '0x',
  transaction: {
    from: '0xd299d4C11A1FA966a2E97B89e03DA42029c61152',
    to: '0xA4d872235dde5694AF92a1d0df20d723E8e9E5fC',
    data: '0x313ce567',
    accessList: null
  },
  error: ProviderError: header not found
      at HttpProvider.request (C:\blockchain\ethernaut\node_modules\hardhat\src\internal\core\providers\http.ts:78:19)
      at LocalAccountsProvider.request (C:\blockchain\ethernaut\node_modules\hardhat\src\internal\core\providers\accounts.ts:188:34)
      at processTicksAndRejections (node:internal/process/task_queues:96:5) 
      at EthersProviderWrapper.send (C:\blockchain\ethernaut\node_modules\@nomiclabs\hardhat-ethers\src\internal\ethers-provider-wrapper.ts:13:20) 

Thanks in advanced for your help.

Best regards,
Pedro Reyes.

Code Snippet

https://bscscan.com/address/0xa4d872235dde5694af92a1d0df20d723e8e9e5fc

// 👁‍🗨 Address we retrieve the data from
let userAddress = "0xd0a111d4349aad1f8ce82e61d5c8c2beac6b2e92";

// 👉 Contracts
const gnbuContract = await hre.ethers.getContractAt(
    "GNBU",
    "0xA4d872235dde5694AF92a1d0df20d723E8e9E5fC"
  );

// 👁‍🗨 Get data from contract (alternative 1)
let gnbuBalance = await gnbuContract.balanceOf(userAddress, {
    // blockTag: 3412629,   // ❌- not working
    blockTag: 20260300,    // ❌ - not working
    // blockTag: "earliest", // ❌  - not working
    // blockTag: "latest",    // ✅ - working
  })

// 👁‍🗨 Get data from contract (alternative 2)
let gnbuBalance = await hre.ethers.provider.call(
    await gnbuContract.populateTransaction.balanceOf(userAddress),
    (blockTag = 20260300)
  );

Contract ABI

https://bscscan.com/address/0xa4d872235dde5694af92a1d0df20d723e8e9e5fc

Errors

Error: missing revert data in call exception; Transaction reverted without a reason string [ See: https://links.ethers.org/v5-errors-CALL_EXCEPTION ] (data="0x", transaction={"from":"0xd299d4C11A1FA966a2E97B89e03DA42029c61152","to":"0xA4d872235dde5694AF92a1d0df20d723E8e9E5fC","data":"0x313ce567","accessList":null}, error={"name":"ProviderError","code":-32000,"_isProviderError":true}, code=CALL_EXCEPTION, version=providers/5.6.8)
    at Logger.makeError (C:\blockchain\ethernaut\node_modules\@ethersproject\logger\src.ts\index.ts:261:28)
    at Logger.throwError (C:\blockchain\ethernaut\node_modules\@ethersproject\logger\src.ts\index.ts:273:20)
    at checkError (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\src.ts\json-rpc-provider.ts:66:16)
    at EthersProviderWrapper.<anonymous> (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\src.ts\json-rpc-provider.ts:603:20)
    at step (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:48:23)
    at Object.throw (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:29:53)
    at rejected (C:\blockchain\ethernaut\node_modules\@ethersproject\providers\lib\json-rpc-provider.js:21:65)
    at processTicksAndRejections (node:internal/process/task_queues:96:5) { 
  reason: 'missing revert data in call exception; Transaction reverted without a reason string',
  code: 'CALL_EXCEPTION',
  data: '0x',
  transaction: {
    from: '0xd299d4C11A1FA966a2E97B89e03DA42029c61152',
    to: '0xA4d872235dde5694AF92a1d0df20d723E8e9E5fC',
    data: '0x313ce567',
    accessList: null
  },
  error: ProviderError: header not found
      at HttpProvider.request (C:\blockchain\ethernaut\node_modules\hardhat\src\internal\core\providers\http.ts:78:19)
      at LocalAccountsProvider.request (C:\blockchain\ethernaut\node_modules\hardhat\src\internal\core\providers\accounts.ts:188:34)
      at processTicksAndRejections (node:internal/process/task_queues:96:5) 
      at EthersProviderWrapper.send (C:\blockchain\ethernaut\node_modules\@nomiclabs\hardhat-ethers\src\internal\ethers-provider-wrapper.ts:13:20)

Environment

Ethereum (mainnet/ropsten/rinkeby/goerli), node.js (v12 or newer), Hardhat

Environment (Other)

BSC mainnet

[zemse]

I just tried to reproduce using https://meganode.nodereal.io, seems to work with plain ethers.js. Are you still facing this issue? How are you running the hardhat script and how is the network specified in the hardhat config?

[PedroReyes]

Hello @zemse ,

Thanks for helping. I am using the next code:

const gnbuContract = await hre.ethers.getContractAt(
    "GNBU",
    "0xA4d872235dde5694AF92a1d0df20d723E8e9E5fC"
);

let gnbuBalanceAlt2 = await gnbuContract.balanceOf(userAddress, {
      blockTag: 3412629,
});
console.log(`📗 GNBU balance (alt2):\n ${gnbuBalanceAlt2} \n`);

My hardhat.config.js setup is the next one:

require("@nomiclabs/hardhat-waffle");
require("@nomiclabs/hardhat-etherscan");
const { task } = require("hardhat/config");
require("dotenv").config();

// This is a sample Hardhat task. To learn how to create your own go to
// https://hardhat.org/guides/create-task.html
task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
  const accounts = await hre.ethers.getSigners();

  for (const account of accounts) {
    console.log(account.address);
  }
});

// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more

/**
 * @type import('hardhat/config').HardhatUserConfig
 */
module.exports = {
  defaultNetwork: "bsc_mainnet",

  mocha: {
    timeout: 120000,
  },

  networks: {
    bsc_mainnet: {
      url:
        "https://bsc-mainnet.nodereal.io/v1/" +
        process.env.ARCHIVE_NODE_API_KEY,
      chainId: 56,
      gasPrice: 20000000000,
      accounts: [process.env.DEPLOYER_PRIVATE_KEY],
    }
  },

  solidity: {
    compilers: [
      {
        version: "0.8.10",
        settings: {
          optimizer: {
            enabled: true,
            runs: 1000,
          },
        },
      },
    ],
  },
};

For executing I am not defining the network so I am taking the default one: npx hardhat run scripts/archiveBalanceOf.js . I want to get the balanceOf at block 3412629 in the BSC, that is, here https://bscscan.com/block/3412629.

Thanks in advance for helping me out.

Best regards,
Pedro Reyes.

[PedroReyes]

Hello,

The code it works. I was trying to recover a date prior to the deployment of the token 🤦‍♂️😅

Best regards,
Pedro Reyes.