Compare

Coinkite COLDCARD Q or Block Bitkey?

The exact editions, side by side: how you’ll use them and the limits to know.

Block Bitkey

One edition

Wallet 2

Add a wallet

Wallet 3

Filters

Connection for signing: USB

Block Bitkey: This model does not match the current filters.

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In short

For your selected criteria, transaction approval (Computer) is confirmed only for Coinkite COLDCARD Q.

Coinkite COLDCARD QOne edition

Price at Coinkite

Block BitkeyOne edition

Price at Block

Approve transactions

Computer: Coinkite COLDCARD Q:
USBSparrow · BitcoinQ already set up and unlocked · USB enabled · data cable required; Block Bitkey:
Transaction approval not confirmed for your selected criteria
iPhone: Coinkite COLDCARD Q:
Transaction approval not confirmed for your selected criteria
iPhone · Nunchuk · NFC · BitcoinSupport for wallet setup is unconfirmed; Block Bitkey:
Transaction approval not confirmed for your selected criteria
Android: Coinkite COLDCARD Q:
Transaction approval not confirmed for your selected criteria
Android · Nunchuk · NFC · BitcoinSupport for wallet setup is unconfirmed; Block Bitkey:
Transaction approval not confirmed for your selected criteria

Where they differ

Controls / Display: Coinkite COLDCARD Q:Physical buttonsDisplay: Display without touch input; Block Bitkey:Touchscreen
Wallet recovery: Coinkite COLDCARD Q:Recovery phrase; Block Bitkey:Phone, hardware and server keys with assisted recovery. Check service and country availability.
Battery: Coinkite COLDCARD Q:Replaceable batteries; Block Bitkey:Rechargeable

What they have in common

Cryptocurrencies: Bitcoin-only
Both

Not fully confirmed

Operating power: Coinkite COLDCARD Q:Batteries or USB power; Block Bitkey:Not recorded

Before you choose

Consider

Coinkite COLDCARD QNeeds a compatible wallet app; follow the current COLDCARD advisory for firmware updates and migration of affected existing wallets.

Block BitkeyTwo of three keys are needed. Recovery involves your phone, cloud storage and the service, rather than a conventional recovery phrase.

Apps and requirements

Show detailsHide details

Connectivity

Coinkite COLDCARD Q

Computer

SparrowmicroSDBitcoinWindows · macOS · Linux

Connection requirements

Sparrow exchanges unsigned and signed Bitcoin transaction files (PSBTs) with Q through microSD. Your computer needs a compatible card reader.

SparrowQRBitcoinWindows · macOS · Linux

Connection requirements

Set up Q’s wallet in Sparrow. Q scans the unsigned transaction QR, then Sparrow uses your computer’s camera to scan the signed result from Q.

SparrowUSBBitcoinWindows · macOS · LinuxQ already set up and unlocked · USB enabled · data cable required

Connection requirements

Set up Q’s wallet in Sparrow and exchange unsigned and signed Bitcoin transaction files (PSBTs) over USB. Q must already be initialized and unlocked, with USB enabled and a data-capable USB-C cable.

iPhone · Android

NunchukNFCBitcoinSupport for wallet setup is unconfirmed

Connection requirements

Use Nunchuk on a compatible NFC phone, with an already initialized Q powered on and NFC enabled, to exchange Bitcoin transaction files (PSBTs).

Block Bitkey

iPhone · Android

Bitkey appNFCBitcoin

Connection requirements

Needs an NFC phone and the Bitkey app. Setup requires a cloud backup and email alerts; recovery depends on the keys and backup access you retain.

Hardware detailsDifferent: 2 · Same: 1 · Not fully recorded: 10Show details (13)Hide details

Coinkite COLDCARD QBlock Bitkey

Display

Display type: Coinkite COLDCARD Q:LCD; Block Bitkey:OLED
Screen diagonal: Coinkite COLDCARD Q:Sources disagreeCoinkite lists 3.2 inches on the Q product page and 2.3 inches in its Q documentation overview. The screen diagonal remains unresolved.; Block Bitkey:Not recorded
Resolution: Coinkite COLDCARD Q:320 × 240 px; Block Bitkey:Not recorded
Colour mode: Coinkite COLDCARD Q:Colour; Block Bitkey:Not recorded

Size and weight

Dimensions: Coinkite COLDCARD Q:120 × 75 × 22 mmDimensions as listed by the manufacturer; Block Bitkey:66 × 60 × 13.6 mmDimensions as listed by the manufacturer
Weight without batteries: Coinkite COLDCARD Q:93 g; Block Bitkey:Not recorded
Device weight: Coinkite COLDCARD Q:Not recorded; Block Bitkey:79 g