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Blockstream Jade Core or Coinkite COLDCARD Mk5?

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

Coinkite COLDCARD Mk5

One edition

Wallet 2

Add a wallet

Wallet 3

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In short

Transaction approval confirmed (iPhone): Blockstream Jade Core and Coinkite COLDCARD Mk5.

Blockstream Jade CoreOne edition

Price at Blockstream

Coinkite COLDCARD Mk5One edition

Price at Coinkite

Approve transactions

Computer: Blockstream Jade Core:
USBBlockstream app · Bitcoin; Coinkite COLDCARD Mk5:
microSDSparrow · Bitcoin
USBSparrow · BitcoinMk5 set up and unlocked · verified current firmware · USB data enabled · data cable
iPhone: Blockstream Jade Core:
BluetoothBlockstream app · Bitcoin; Coinkite COLDCARD Mk5:
NFCNunchuk · Bitcoin
iPhone · Nunchuk · NFC · BitcoinSupport for wallet setup is unconfirmed
Android: Blockstream Jade Core:
USB · BluetoothBlockstream app · Bitcoin; Coinkite COLDCARD Mk5:
NFCNunchuk · Bitcoin
Android · Nunchuk · NFC · BitcoinSupport for wallet setup is unconfirmed

What they have in common

Controls / Display: Physical buttonsDisplay: Display without touch input
Both
Wallet recovery: Recovery phrase
Both
Operating power: USB power
Both
Battery: No battery
Both

Not fully confirmed

Cryptocurrencies: Blockstream Jade Core:Not confirmed; Coinkite COLDCARD Mk5:Bitcoin-only

Before you choose

Consider

Blockstream Jade CoreiPhone connects by Bluetooth and a computer by USB. Cryptocurrency support also depends on the installed firmware.

Coinkite COLDCARD Mk5Needs USB-C power during use. Check the current seed-generation advisory before reusing an older wallet; updating alone does not repair an affected seed.

Apps and requirements

Show detailsHide details

Connectivity

Blockstream Jade Core

Computer

Blockstream appUSBBitcoinWindows · macOS · Linux

Connection requirements

This workflow uses Bitcoin mainnet in the Blockstream app. The standard firmware also supports Liquid, so it is not Bitcoin-only.

iPhone

Blockstream appBluetoothBitcoin

Connection requirements

This workflow uses Bitcoin mainnet in the Blockstream app. The standard firmware also supports Liquid, so it is not Bitcoin-only.

Android

Blockstream appUSB · BluetoothBitcoin

Connection requirements

This workflow uses Bitcoin mainnet in the Blockstream app. The standard firmware also supports Liquid, so it is not Bitcoin-only.

Coinkite COLDCARD Mk5

Computer

SparrowmicroSDBitcoinWindows · macOS · Linux

Connection requirements

Sparrow exchanges unsigned and signed Bitcoin transaction files (PSBTs) with Mk5 through microSD. Your computer needs a compatible card reader.

SparrowUSBBitcoinWindows · macOS · LinuxMk5 set up and unlocked · verified current firmware · USB data enabled · data cable

Connection requirements

Start with a Mk5 already initialized under its setup guide, running the verified current recommended standard firmware. Keep Mk5 unlocked, enable USB data and use a data-capable USB-C cable. Then add its wallet to Sparrow and sign Bitcoin transactions over USB.

iPhone · Android

NunchukNFCBitcoinSupport for wallet setup is unconfirmed

Connection requirements

Use Nunchuk on a compatible NFC phone with an already initialized Mk5, powered on and with NFC enabled. Import the wallet’s public account into Nunchuk before exchanging Bitcoin transaction files (PSBTs).

Hardware detailsDifferent: 0 · Same: 1 · Not fully recorded: 8Show details (9)Hide details

Blockstream Jade CoreCoinkite COLDCARD Mk5

Display

Colour mode: Blockstream Jade Core:Sources disagreeBlockstream’s Jade lineup article describes a color display on Core; the Jade Plus store comparison says Core has no display. The sources conflict on Core’s display.; Coinkite COLDCARD Mk5:Monochrome
Display type: Blockstream Jade Core:Not recorded; Coinkite COLDCARD Mk5:LCD
Screen diagonal: Blockstream Jade Core:Not recorded; Coinkite COLDCARD Mk5:1.54″

Size and weight

Dimensions: Blockstream Jade Core:65 × 30 × 12 mmDimensions as listed by the manufacturer; Coinkite COLDCARD Mk5:Not recorded
Device weight: Blockstream Jade Core:20 g; Coinkite COLDCARD Mk5:Not recorded