Keep your bitcoin in your hands. https://t.co/nao68KUuYV
3.2/ 5
Our score
Fair
Supported assets
1
Bitcoin-only
Yes
What is Bitkey?
Bitkey is a Bitcoin-only self-custody wallet from Block, Inc. It combines a hardware device, mobile app and recovery system in a 2-of-3 multisignature design, so two of three keys must approve a transaction.
Who is behind Bitkey
Block, Inc. launched Bitkey in 2023. Jack Dorsey founded Block, formerly Square. The product became available for pre-order on December 7, 2023, and Block began shipping the hardware device in March 2024.
How the wallet works
Bitkey uses three keys generated across the hardware device, phone and server environments. The mobile app works with the device as part of the signing process, while the recovery system adds another route to access. Any two keys are required to approve a transaction. Bitkey supports Bitcoin only, rather than multiple cryptocurrencies.
Bitkey with Screen, introduced on April 27, 2026, adds a display for checking transaction details directly on the device. The Bitkey App manages the wallet and its multisignature security model. An inheritance feature, announced in November 2024, lets users designate beneficiaries for Bitcoin transfers.
Price and availability
The Bitkey wallet is listed at €230. Bitkey became available for pre-order in more than 95 countries and is available in the United States and 95+ other countries. The product is designed for self-custody, but its three-key model includes a server-held key in the signing and recovery arrangement.
Track record and risks
Bitkey released initial firmware for Bitkey with Screen in April 2026. In August 2026, it fixed a test-account-only endpoint bug that could shorten another account’s active Delay & Notify review period; Bitkey reported no evidence of exploitation or impact to customer funds.
That month, Bitkey also fixed a randomness issue in Recovery Contact and Beneficiary enrollment. The company said exploitation would require a compromise of Block’s internal systems and real-time monitoring of an enrollment flow, with no evidence of exploitation. Security update BKS.2026.08.D required the Bitkey App version 2026.11.2. The wallet remains limited to Bitcoin, and the server key introduces reliance on Block’s recovery infrastructure.
Founders
Jack DorseyFounder of Block, Inc.
Founded Block, Inc., formerly Square.
Best for:Long-term Bitcoin self-custodyBitcoin-only holdersMultisig recovery planningUsers wanting on-device verification
Pros and cons
Pros
- 2-of-3 multisig avoids reliance on one signing key
- Bitcoin-only design keeps supported assets focused
- Bitkey with Screen verifies transactions on the device
- Recovery system includes a third key and inheritance tools
- Available in the United States and 95+ other countries
Cons
- Server-held key creates reliance on Block's recovery infrastructure
- Supports Bitcoin only, excluding other coins and tokens
- August 2026 security fixes covered recovery and notification features
Our review
3.2/5
Fair
Bitkey combines 2-of-3 multisig with a mobile app and hardware device, but its Bitcoin-only design limits asset support at a €230 price.
Bitkey is a Bitcoin-only hardware wallet from Block, Inc. Its security model uses three keys across the hardware device, phone app and server, with any two required to approve a transaction. That is a clear strength for long-term self-custody because losing one component does not by itself expose the wallet. The trade-off is that the server key makes the design less independent than a wallet built entirely around locally controlled devices.
Bitkey supports Bitcoin only, while its screen-equipped model, released on April 27, 2026, lets the owner verify transaction details on the device.
The companion app works with the device and supports wallet management and transactions. Recovery tools include the three-key arrangement and an inheritance feature announced in November 2024, which lets owners designate beneficiaries. The recovery path adds dependence on Block's systems.
At €230, Bitkey sits in the paid hardware-wallet category without offering broader coin coverage. It began shipping in March 2024 after launching in 2023 and is available in the United States and more than 95 other countries.
Bitkey fixed two security bugs in August 2026. One could shorten another account's Delay & Notify review period under narrow conditions; the other involved non-cryptographic randomness during Recovery Contact and Beneficiary enrollment. Bitkey reported no exploitation or customer-fund impact, and required an app update to version 2026.11.2. These incidents count against the security assessment even though fixes were issued.
Bitkey fits Bitcoin holders who want multisig recovery and a phone-led experience.
Specs
| Display | Touchscreen · unverified |
|---|---|
| Bitcoin-only | Yes |
| Supported assets | 1 · unverified |
| Multisig support | Yes · unverified |
| Companion app | Bitkey App · unverified |
| Touchscreen | Yes · unverified |
| Backup options | Built-in recovery, Inheritance · unverified |
Not disclosed by the provider: KYC required, Price from, Connectivity, Secure element, Firmware, Air-gapped signing, Battery, BIP39 passphrase, NFC.
Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.
Key features
2-of-3 multisig security
Three keys are distributed across the hardware device, phone and server environments; any two approve a transaction.
Bitcoin-only wallet
Bitkey supports Bitcoin and does not add other coins or tokens to its wallet.
Mobile companion app
The Bitkey App works with the hardware device and forms part of the wallet's multisignature security model.
On-device verification
Bitkey with Screen lets users check what they are approving directly on the hardware device.
Recovery system
A third key supports recovery alongside the device and phone keys, while recovery tools include Delay & Notify.
Inheritance feature
The inheritance feature lets users designate beneficiaries for transferring Bitcoin.
Inside Bitkey
Bitkey wallet
This Bitcoin-only self-custody wallet pairs a mobile app, physical hardware, and an integrated recovery setup. A 2-of-3 multisignature scheme distributes keys across the device, the phone, and Block's server to approve transactions.
Bitkey App
The mobile application works as one part of the wallet's multisignature model and supports wallet management and transactions.
Bitkey with Screen
This hardware device adds a screen for verifying what is being approved directly on the device. Its initial firmware was released on April 27, 2026.
Bitkey inheritance
The inheritance feature lets owners designate beneficiaries for transferring bitcoin. Block announced the feature in November 2024.
Bitkey screenshots
What users say about Bitkey
Complaints focus on software and hardware reliability, missing UTXO controls, absent Lightning support, and recovery or backup friction.
Top goods
In their own words
“Finally, self-custody that feels simple and secure I’ve been looking for an easy way to take my Bitcoin off exchanges without dealing with seed phrases and complicated setups, and Bitkey delivers.”
“GREAT SUPPORT If your NFC is a success you must keep the device away from your phone in order to connect to network without an error when restoring the wallet. Thanks a lot to support I had no idea and they were supper helpful, definitely recommend this wallet!”
“Hardware Failed AVOID! The hardware failed. Support was useless. Would have been better off using anything but Bitkey. If you want to protect your crypto assets, AVOID Bitkey.”
“Fine start but much to improve The existing “utxo management” is a bit misleading. True utxo management would allow you to lock/tag specific utxo’s. I really can’t see this as a serious wallet until available.”
“could not send my money the app keeps giving the error below and so far I’m unable to send my money out of bitkey. Here is the error: “We couldn't send this transaction. We are looking into this. Please try again later.” Who is looking into this? It’s my money! Why can’t I send my money?”
“Good start, feels unfinished Pros: Clean design. Buying bitcoin from a partner is simple once set up, looking forward to more partners. Con #1: Disappointed Lightning wasn’t put in at release.”
Based on 100 Reddit posts and comments, 33 App Store reviews from the last 12 months, checked Oct 18, 2026. These are posts by users on other sites, not reviews submitted on CryptoReview.
User reviews
No user reviews yet. Have you used Bitkey? Share your experience below.
FAQ
Who founded Bitkey?
Bitkey was launched by Block, Inc., whose founder is Jack Dorsey. Block began shipping the Bitkey hardware device in March 2024.
How much does Bitkey cost?
The Bitkey wallet costs €230. The listed price applies to the wallet product.
Where is Bitkey available?
Bitkey is available in the United States and more than 95 other countries. It launched for pre-order in more than 95 countries on December 7, 2023.
Is Bitkey safe for self-custody?
Bitkey uses three keys in a 2-of-3 multisignature setup, with keys held across the hardware device, phone and server. Two security bugs were fixed in August 2026, and Bitkey reported no exploitation or impact to customer funds.
Which coins does Bitkey support?
Bitkey supports Bitcoin only. Its wallet, app and hardware device are built around Bitcoin self-custody.
Does Bitkey support multisig?
Yes, Bitkey uses 2-of-3 multisig as its core security model. Any two of its three keys are required to approve a transaction.
Latest from Bitkey on X
Someone should make a wallet that prevents this...
Most wallets stop at letting you hold your keys. Bitkey goes further.
Hear more from @max_guise: https://t.co/pyR20smcLI
Hear more from @max_guise: https://t.co/pyR20smcLI
Hard money, made harder to lose. https://t.co/N7rYsUgK8I
Self-custody should feel like a natural part of owning bitcoin.
With our new auto-withdraw feature, eligible @CashApp customers can buy BTC in Cash App and have it automatically moved to Bitkey for safekeeping.
Set it once, keep stacking, and safeguard your BTC with Bitkey. https://t.co/SbRgTHIy89
With our new auto-withdraw feature, eligible @CashApp customers can buy BTC in Cash App and have it automatically moved to Bitkey for safekeeping.
Set it once, keep stacking, and safeguard your BTC with Bitkey. https://t.co/SbRgTHIy89
Recent public posts from @Bitkey, shown as published. Not reviewed or endorsed by CryptoReview.
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