BITCOIN (BTC): PRIVACY & OPSEC GUIDE
Bitcoin is pseudonymous, not anonymous. This guide explains its privacy limitations and the additional measures required to use BTC with acceptable operational security.
BITCOIN'S PRIVACY LIMITATIONS
Bitcoin's blockchain is a public, immutable ledger where every transaction ever made is visible to anyone. While wallet addresses are pseudonymous (not directly tied to real names), sophisticated blockchain analytics can de-anonymize users through a process called transaction graph analysis.
Firms like Chainalysis, Elliptic, and CipherTrace are hired by law enforcement agencies to trace cryptocurrency flows. By combining blockchain data with IP address logs (from exchanges, ISPs, and nodes), social media analysis, and exchange KYC data, these firms can often identify the real person behind a Bitcoin address with high confidence.
The core problem: every time you receive Bitcoin from a KYC exchange, that exchange creates a permanent cryptographic record linking your verified identity to that specific UTXO (Unspent Transaction Output). Even if you subsequently move those coins through multiple addresses, the trail remains — blockchain analysis can follow it with appropriate resources and time.
GETTING BTC WITHOUT IDENTITY VERIFICATION
BISQ
Fully decentralised peer-to-peer Bitcoin exchange. No KYC, no central server, no custodied funds. Accepts cash by mail, bank transfer (minimal info), and other cryptocurrencies. Access via Tor.
bisq.network ↗HODLHODL
Non-custodial P2P BTC trading platform. Uses multi-signature escrow. Accepts various payment methods with minimal identity requirements depending on counterparty.
hodlhodl.com ↗BTC ATMs (CASH)
Many Bitcoin ATMs accept cash without ID for purchases under certain thresholds. Use one far from your home, pay cash, send directly to a fresh wallet address. Avoid ATM cameras where possible.
COINJOIN WITH WASABI WALLET
CoinJoin is a technique where multiple users combine their transactions into a single transaction with many inputs and equally-sized outputs, breaking the transaction graph. Wasabi Wallet implements CoinJoin with Tor routing and a coordinator model.
DOWNLOAD WASABI WALLET
Download from wasabiwallet.io only. Verify the PGP signature of the download. Wasabi routes all traffic through Tor by default.
CREATE A NEW WALLET
Generate a new 12-word BIP39 seed phrase. Write it down on paper — never digitally. Use a strong password. This wallet will hold your pre-mixed coins temporarily.
RECEIVE BTC & WAIT FOR CONFIRMATION
Send your non-KYC BTC to a fresh Wasabi address. Wait for 1+ confirmations. Wasabi will automatically suggest eligible UTXOs for CoinJoin.
PARTICIPATE IN COINJOIN
Select UTXOs and click "Coinjoin". Wasabi batches your transaction with other participants. The coordinator never has custody of funds. Each round mixes the transaction graph further.
SEND MIXED COINS TO FRESH WALLET
After CoinJoin completes (2+ rounds recommended), send to a completely separate wallet — never back to an exchange address associated with your identity.
RECOMMENDED BTC WALLETS
SPARROW WALLET
Feature-rich Bitcoin wallet with excellent UTXO management, Tor support, and CoinJoin integration. Connect to your own full node for maximum privacy. Open source, actively maintained.
sparrowwallet.com ↗ELECTRUM + TOR
Lightweight Bitcoin wallet. Configure to use a local Electrum server via Tor. Good for intermediate users but requires more manual privacy configuration than Sparrow.
TREZOR / COLDCARD
For cold storage of larger amounts. Hardware wallets protect private keys from online threats. Pair with Sparrow Wallet for transaction privacy and UTXO management.