Master Bitcoin
Self-Custody.

Absolutely. When your Bitcoin is on an exchange, you don't actually control it — the exchange does. History is filled with exchange collapses (Mt. Gox, FTX, and dozens more) where users lost everything. With self-custody, you hold the private keys and no third party can freeze, seize, or lose your funds.

Your Bitcoin is never stored on your device — it lives on the blockchain. As long as you have your 12 or 24-word seed phrase (and optional passphrase), you can restore your wallet on any device. BitHarbour also supports encrypted cloud backups for seamless recovery.

No — BitHarbour works as a software wallet on its own with strong encryption. However, for large holdings, we strongly recommend pairing it with a hardware wallet (Ledger, Trezor, or Coldcard) for the highest level of security. BitHarbour integrates seamlessly with all major hardware wallets.

BitHarbour is purpose-built for serious investors. It combines cold storage architecture, multi-signature support, Tor privacy integration, and hardware wallet compatibility in one seamless platform. Plus, we collect zero personal data — no email required, no tracking, complete privacy.

A seed phrase is a human-readable backup of your private keys — typically 12 or 24 words. Store it offline on physical media (steel backup recommended for fire/water resistance), keep multiple copies in geographically separate secure locations, and never store it digitally, take photos of it, or share it with anyone.