Getting started - P2P.ORG

1. Installation

Install the Signer SDK NPM package. Refer to this link for more information.

2. Configuration

To initialize a signer, you need two sets of data: your Signer Configuration (sensitive keys) and your Network Parameters (RPC and public addresses).

// 1. Signer Config: Contains sensitive private keys and network targeting
const signerConfig = {
  ethereumPrivateKey: process.env.PRIVATE_KEY, // e.g., '0x...'
  networkName: 'hoodi', // Use 'mainnet' for production or 'hoodi' for testnet
};

// 2. Network Parameters: Public data for transaction preparation
const parameters = {
  apiBase: 'https://api-test.p2p.org/api/v1',
  token: 'YOUR_P2P_API_TOKEN',
  rpcURL: 'https://ethereum-hoodi-rpc.publicnode.com',
  walletAddress: '0x88bf...'
};

3. Signing a transaction

The following function illustrates the standard workflow: fetching a fresh nonce from the blockchain, initializing the factory, and signing the payload.

import { SignerFactory, Signers } from '@p2p-org/signer-sdk';
import { ethers } from 'ethers';

/**
 * @param unsignedTransactionData - The transaction object received from the Staking API
 */
async function signTransaction(unsignedTransactionData) {
    // A. Prepare the provider to fetch on-chain metadata
    const provider = new ethers.providers.JsonRpcProvider(parameters.rpcURL);

    // B. Ensure the transaction has the correct Nonce for the wallet
    unsignedTransactionData['nonce'] = await provider.getTransactionCount(parameters.walletAddress);

    // C. Create a typed signer instance using the SignerFactory
    // We specify 'Signers.Ethereum' to handle EVM-compatible logic
    const signer = SignerFactory.createSigner(Signers.Ethereum, signerConfig);

    // D. Sign the transaction locally
    // The private key never leaves your environment
    const signedTx = await signer.sign(unsignedTransactionData);

    return signedTx;
}