pledgeBest fit
Advanced cold-storage users who want airgapped signing and deep multisig controls.
The review starts with the job this wallet is most naturally built to solve.
Wallet review
COLDCARD
Coinkite · Hardware · Last reviewed 2026-04-29
Advanced cold-storage users who want airgapped signing and deep multisig controls.
Key modelHardware signer
HardwareSupported
Asset surfaceBitcoin-only
EvidenceHigh
Evidence
Why trust this view
COLDCARD evidence summary
Slow down if
You want a beginner mobile app or guided recovery service.
This is the first tradeoff to read before treating the wallet as a fit.
Main risk
Powerful airgapped workflows are operationally demanding; mistakes in backup or coordinator setup can be expensive.
Operational and recovery risk matter more than feature checklists for self-custody.
Source quality
2 public sources
High evidence quality. Official materials are linked below.
Control model
What you control, and what can still fail.
- Key model
- Hardware signer
- Recovery / backup path
- Seed-based hardware signing with advanced multisig, PSBT, microSD, NFC, and QR workflows
- Hardware support
- The product is the hardware signer; commonly paired with coordinator wallets
- Open-source posture
- Source-available firmware and public documentation
Pledge take
Who should shortlist it?
Shortlist if
Advanced cold-storage users who want airgapped signing and deep multisig controls.
Pause if
You want a beginner mobile app or guided recovery service.
Primary risk
Powerful airgapped workflows are operationally demanding; mistakes in backup or coordinator setup can be expensive.
Methodology
How this wallet is evaluated.
Recovery safety
Can a user recover under stress without handing unilateral control to a provider?
Key control
Who signs, how many keys exist, and whether multisig or hardware separation is available.
Ease of use
Whether the setup burden matches the likely user and balance size.
Hardware support
Whether long-term savings can use dedicated signing devices and coordinator flows.
Privacy tooling
Whether the wallet supports power-user controls such as PSBTs, descriptors, Tor, or coin control.
Evidence trail
COLDCARD source receipt
No live quote. Wallet reviews use public materials for platform support, backup model, hardware support, open-source posture, and recovery risk.
OfficialCOLDCARD official homepage
COLDCARD is a Bitcoin-only hardware signing device; fully air-gapped via microSD/NFC/QR; dual secure elements; 24-word BIP39 seed + passphrase; multisig co-signing; firmware described as open source and reproducible.
Verified against source · checked 2026-04-29OfficialCOLDCARD firmware LICENSE (GitHub)Firmware license includes a Commons Clause restricting commercial sale, making it source-available rather than true open source.
Verified against source · checked 2026-04-29OfficialColdcard licensing analysis (search synthesis)Firmware/hardware designs are publicly available but not OSI open source due to the Commons Clause; builds are fully reproducible via Docker.
Verified against source · checked 2026-04-29Sources
Open the official materials before trusting any recovery model with meaningful funds.
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