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Ethereum: InvalidsPosseerror: Returned Error: Unknown Account

Ethereum Blockchain is a decentralized, public and secured platform for intellectual contracts and decentralized programs (DAPP). You must have Ethereum wallet and a valid private key to communicate with Ethereum network.

In this guide, we will use the Web3.js Library to interact with Ethereum Blockchain. We will also use the Solidi Compiler compiler compiler to create the intellectual contract code to the byte code Ethereum.

CODE EXAMPLE

Below is an example of how you can save your local system private account key and then sign the operation using the following account:

`Javascript

// Import the required libraries

Const Web3 = Require (‘Web3’);

Const SolidationComPiler = Require (‘Solc’);

// Set the Web3 copy using Ethereum provider (eg infura, etc.)

CONST providerrl = ‘

Const Web3 = New Web3 (New Web3.Providers.Httpprovider (Providerurl));

// Collect Solidity Byton for your intellectual contract

SolityComPiler.comPile (‘Road/to/Your/Your/Your/Your/SmartContract.sol’, (err, Bytecode) => {

IF (ERR) {

Console.error (ERR);

to return;

}

// Get a private Ethereum account from the contract

CONST Contractaddress = ‘0x …’; // Change the address of the intellectual contract

CONST PRIVATEKY = WEB3.eth.Gettransactionrecept (Contractaddress) .transaction.privatekey;

// Sign Operation using a private key

CONSS SIGNATURE = Web3.eth.signtransaction ({{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{)

Author: 0x …, // Change your Ethereum Account Public Key

Data: Byte code,

Gasem: 20000,

Nonce: 1,

Privatekey: Privatekey

}, (error, txhash) => {{{

IF (ERR) {

Console.error (ERR);

to return;

}

Console.log (txhash); // this should print the bag operations

});

});

`

Error explanation

“Invalidresponseerror: Returned Error: Unknown Account” usually occurs when trying to sign an operation using a private Ethereum private key that does not match any known public key. This can happen if the private key is not properly stored or if it is not used with a valid public key.

In your case, you mentioned a private key saving in the local system and then signed an operation with this key. However, you did not give an example of how to safely save a private key. To correct this error, remember:

• Private key safely save (e.g.

• Check that the private key corresponds to any known public key.

• Use the correct Z parameter to sign the operations.

If you still have a problem, provide more information about your Ethereum account and the intellectual contract code and I will do whatever I can to help you continue.

More tips

• Always use a secure password or hardware wallet to keep private keys.

• Be sure to check the Web3.js documentation whether it contains any updates or changes in the library behavior.

• Use the famous Ethereum provider (eg infura) to ensure that your account and contract addresses are accurate.

I hope this will help! If you have more questions or concerns, do not hesitate to ask.

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