Bitkey now has another top-tier buy partner. US customers can now buy bitcoin with Strike and move it straight into your Bitkey wallet in one smooth flow. Another step toward seamless bitcoin experiences.

You can now buy a Bitkey without giving up your home address. Ship to thousands of pickup points across the U.S. — FedEx, Walgreens, Kroger, Dollar General, and more. Pay with bitcoin, pick up privately, and stay in control.

Bitkey: Self-custody bitcoin wallet

Learn about Bitkey privacy in Bitkey Basics

We’re wrapping up 2025 with 0% fees on bitcoin buys when you pick Cash App in Bitkey — now through the end of the year. The banks might be holidazed (how many are we at now?) but bitcoin never rests. Happy stacking. Terms apply:

Bitkey x Cash App: 0%-Fee Bitcoin Buys

A bitcoin wallet to own your private keys. Bitkey includes an app, hardware wallet, and recovery tools in case you lose your phone, or hardware, or...

With Chain Code Delegation, Bitkey is the first multi-sig wallet that gives you recovery and security without giving up your privacy.

By implementing Chain Code Delegation, Bitkey becomes the first private collaborative multisig wallet — what you do with your keys is your business, simplifying self-custody is ours. 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 ...

Across the Block ecosystem, brands like Cash App, Square, Spiral, Proto, and Bitkey are helping make bitcoin more open, accessible, and usable. From payments and mining to self-custody and education, we’re proud to be part of a global network building financial freedom for everyone. 🌍 Watch Ivy Galindo's story and see how bitcoin is changing lives:

Bitcoin

Bitcoin

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

Security, privacy, and ease of use shouldn’t be at odds. To help close the gap, Bitkey engineer Jurvis Tan and Bitkey alum Jesse Posner proposed a new bitcoin improvement that allows multisig wallet owners to control which keyholders can see full balance and transaction data. Read more to see how this moves bitcoin forward:

Bitkey: Self-custody bitcoin wallet

Chain Code Delegation: Improving privacy in collaborative multisig

Collaborative custody and multisig setups have long faced a tradeoff between safety and privacy. Sharing a key with a third party—whether for rec...

The true test of self-custody isn’t just whether or not you hold your own keys. It’s whether or not you can protect them from loss, theft, coercion, seizure, and death, and still be able to make transactions when you need to, without a third party intermediary.

Bitkey: Self-custody bitcoin wallet

Hardware wallets are not enough

Hardware is a critical component of self custody. But it only solves part of the problem. We all know the mantra: Not your keys, not your coins. ...

Passing on your bitcoin shouldn’t be a puzzle. Our inheritance feature is built to make it straightforward and secure. Set it up once. Protect it for a lifetime. Dive into how it works:

Bitkey: Self-custody bitcoin wallet

Learn about How Bitkey works in Bitkey Basics