Your keys.
Your Bitcoin.
bit21 is an open-source, self-custody Bitcoin wallet.
- Self-custody. Your seed never leaves your device.
- Bitcoin-only. All four address types, Legacy to Taproot.
- No KYC, no accounts, no tracking.
Coins on an exchange are
the exchange’s coins.
Type your 12 or 24 words into bit21 and the same wallet appears, exactly as you left it. Nothing moves on-chain. No fee.
Switch to bit21Just Bitcoin, properly.
Time-locked vault
Lock coins until a date you choose. Bitcoin’s own script enforces it, not us.
Every address type
Import once. bit21 scans Legacy, SegWit, Native SegWit and Taproot, so nothing gets stranded.
Price alerts
Set a level. Get notified the moment it trades there.
Coin control
Pick the coins you spend. Freeze the ones you don’t.
Fees, your call
Economy to priority, or set your own rate. You see the cost before anything is signed.
Nothing to leak
No account, no email, no analytics inside the wallet.
Built so you don’t
have to trust us.
Encrypted on your device
Your seed phrase is encrypted on your device before anything else happens. It is not uploaded, sent, or stored anywhere except your phone.
Time-locked vault
Vault coins are unspendable until the block height you chose. Bitcoin’s consensus enforces the lock, not a company.
Your seed, your exit
Standard 12 or 24 words. If bit21 vanished tomorrow, your seed opens the same wallet in any compatible app.
No account, no analytics
There is no signup and no tracking inside the wallet. Nothing about you exists on a server to freeze or leak.
Not a trust-me wallet. A verify-it-yourself wallet.
Read the code on GitHubGet bit21.
Import your existing wallet in about thirty seconds, or start fresh.
Coming soon to the App Store. On iPhone, bit21 runs in the browser today.
