From c8cd481327036bf8c147952ba67a5284f974ab00 Mon Sep 17 00:00:00 2001
From: kirito201922 <52266724+kirito201922@users.noreply.github.com>
Date: Thu, 25 Dec 2025 21:24:04 +0100
Subject: [PATCH] Create offline-tx-signing.md

Provides a detailed guide on preparing, signing and broadcasting transactions in an offline/online setup using geth.
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+# Offline transaction signing with Geth
+
+Signing transactions offline improves security by keeping your private keys off of internet‑connected machines.
+
+## Prerequisites
+
+- A machine with geth installed (air‑gapped or offline).
+- A machine with network access to broadcast the signed transaction.
+- The account’s private key or keystore file.
+
+## Steps
+
+1. **Prepare the unsigned transaction** on an online machine using:
+   ```bash
+   geth --exec "eth.signTransaction({to: '0x...', value: web3.utils.toWei('1', 'ether'), gas: 21000, gasPrice: web3.utils.toWei('1', 'gwei'), nonce: web3.eth.getTransactionCount('0xYourAddress')})" attach