COLDCARD Q Review
COLDCARD Q is a premium Bitcoin-only signer for advanced users who want air-gapped PSBT signing through QR or MicroSD, dual secure elements, replaceable AAA power, a large screen, and QWERTY passphrase entry.
COLDCARD Q
Pros
- Strong fit for bitcoin users
- Strong fit for advanced multisig users
- Strong fit for airgap security seekers
- Strong fit for privacy focused users
Cons
- Not ideal for multi asset holders
- Not ideal for beginners wanting simple app
- Not ideal for users wanting small pocket device
- Not ideal for users wanting bluetooth
Price
$289
Connectivity
microSD, QR code, NFC-V, USB-C
Open Source
Mostly open source
Coins
1+
Key Specifications
Manufacturer
Coinkite Inc.
Country
Canada
Launch Year
2024
Firmware Maintained
Yes
Secure Element
Yes
Air-gapped
Yes
Connection
microSD, QR code, NFC-V, USB-C
Official App
None
Security Model
Premium Bitcoin-only air-gapped signer that extends COLDCARD's dual secure-element PSBT model with QR scanning, dual MicroSD slots, and battery-powered operation.
Trust Assumptions
- Users verify firmware signatures and reproducible builds when needed
- Coinkite firmware releases and factory key signing remain trustworthy
- Users understand Bitcoin PSBT, QR, backup, and multisig workflows
- MicroSD, QR, NFC, or USB transfer channels are used carefully according to the user's threat model
- Users manage replaceable AAA batteries safely and avoid leaving sensitive workflows unattended
Backup Methods
24 Word Seed, Passphrase, Seed Xor, Encrypted Backup, microSD backup, QR Seed Import
- Bitcoin Users
- Advanced Multisig Users
- Airgap Security Seekers
- Privacy Focused Users
- Users Wanting QR signing
- Long Passphrase Users
- Multi Asset Holders
- Beginners Wanting Simple App
- Users Wanting Small Pocket Device
- Users Wanting Bluetooth
- DeFi Users
Known Issues
2020: Open-source licensing debates around COLDCARD firmware
Some community discussion has focused on COLDCARD firmware licensing and the distinction between source-available, reproducible firmware and fully open hardware.
Sources
- COLDCARD Q Official Store Category(official)
- COLDCARD Q Product Page(official)
- COLDCARD Q Overview Documentation(documentation)
- COLDCARD Q Quickstart Guide(documentation)
- COLDCARD Official Site(official)
- COLDCARD Firmware GitHub Repository(github)
- Bitcoin.org Coldcard Q Listing(directory)
Compare with other wallets
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