What if Bitkey goes down? Your bitcoin doesn’t. Bitkey is built so you can move your funds independently, even without our app or servers. Learn how the Emergency Exit Kit works:

Bitkey: Self-custody bitcoin wallet

Learn about How Bitkey works in Bitkey Basics

Seed phrases were meant to help with recovery. Over time, they became the easiest way for scammers to steal bitcoin. By design, Bitkey removes seed phrases entirely— eliminating the most common attack vector in self-custody. Full explanation:

Bitkey: Self-custody bitcoin wallet

The end of seed phrase scams

The easiest way to avoid seed phrase scams? Don’t use a seed phrase. Since the beginning of time, scammers have found ways to turn the misfortun...

Bitkey: Self-custody bitcoin wallet

The end of seed phrase scams

The easiest way to avoid seed phrase scams? Don’t use a seed phrase. Since the beginning of time, scammers have found ways to turn the misfortun...

Locked out doesn’t have to mean starting over. If your fingerprint stops working, you can recover access to your Bitkey without replacing your device — with a built-in security delay so nothing happens instantly and you stay in control the whole time. Built for real life. Built for security.

Block has been building for bitcoin for over a decade. Cash App. Square. Proto. Sprial. And Bitkey. Our lane at Bitkey: self-custody that’s built for real life — security + recovery + privacy, without the tradeoffs. Because bitcoin deserves a full ecosystem.

Bitcoin

Bitcoin

Discover how Block advances bitcoin—Cash App and Square payments, Bitkey self-custody, and Proto mining—expanding access for millions worldwide

Buy bitcoin with Strike. Send it straight to Bitkey. That’s the post.

Self-custody shouldn’t require giving up your privacy. With Chain Code Delegation, Bitkey enables collaborative multisig without exposing balances or transaction history. Not our keys. Not our business.

Bitkey: Self-custody bitcoin wallet

Not our keys, not our business

How Bitkey used Chain Code Delegation to create the first private collaborative bitcoin wallet. Starting today, Bitkey users can enjoy the safety ...

Private by default. Not a setting. Anyone onboarding to Bitkey today gets a wallet we’ve provably never seen. Existing users can upgrade to get there too — new wallet, new descriptor, full privacy. Jonathan breaks this down further with Simply Bitcoin

No distractions. Just bitcoin.

Bitkey doesn’t use seed phrases. Not because recovery doesn’t matter, but because relying on one fragile backup creates a single point of failure. Self-custody should survive real life. Why we built it this way ↓

Bitkey: Self-custody bitcoin wallet

Learn about How Bitkey works in Bitkey Basics