Running a Bitcoin node for better privacy

Most people who use Bitcoin rely on third-party servers to broadcast their transactions and check their wallet balance. Running your own Bitcoin node changes this in ways that matter for privacy.

What a node does

A Bitcoin full node downloads the entire blockchain and validates all transactions independently. When you use a wallet connected to your own node, your transaction data — wallet addresses, balances, transaction history — is queried against your own local copy rather than a third-party server. The server doesn't learn which addresses you're interested in because you never ask it.

Without your own node, your wallet app sends queries to public servers. Those servers can see which addresses your wallet is checking, which reveals your wallet holdings and transaction pattern to whoever operates the server.

What you need

A dedicated computer or Raspberry Pi with at least 600 GB of storage (the blockchain is over 500 GB), a reliable internet connection, and 1-2 weeks for initial sync. The Bitcoin Core software is free and open source. Once set up, the node runs continuously and syncs new blocks automatically.

Connecting your wallet

Electrum and Wasabi both support connecting to a custom node. In the wallet settings, replace the default server with your node's local IP address. After this, all wallet queries go to your local machine instead of public servers.

Is it worth it for occasional orders?

Probably not. The setup cost — hardware, time, continuous electricity — is significant for the privacy gain in an occasional-use scenario. The practical benefit matters most for people with significant Bitcoin holdings or who make frequent transactions. For two or three vendor payments per year, using Monero or a quality privacy-respecting Bitcoin wallet with a reputable server is a more proportionate solution.

Running a full Bitcoin node provides complete transaction validation independence — your wallet verifies every block and transaction itself rather than trusting a third-party server. For privacy purposes, a node also lets you broadcast transactions directly to the peer-to-peer network without a third-party server knowing which transaction originates from your IP. Both benefits are meaningful but require hardware resources and a long initial blockchain sync that not every user needs to take on.