Opinion about Coldcard Mk4

Opinion about Coldcard Mk4 (hardware)

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Coldcard MK4 is a popular choice among bitcoin advanced users, particularly those who prioritize security and privacy. It is made by Coinkite, which is known for its focus on security and air-gapped operation. Its Bitcoin only mantra is also an appreciated value for bitcoiners.

Pros:

• Privacy and supply chain security: PO box delivery support, payment with bitcoin in official store, tamper evident bag, and more
• Lots of security features: different ways to protect the wallet with PIN, passphrase, etc
• Lots of advanced features for the more expert users: testnet, secure elements, multisig, miniscript, user added entropy, etc
• You can connect it with lots of software wallets, working as coordinators

Cons:

• The source code is available but the anti selling clause in its license makes it not fully open source.
• Missing camera, so the air-gapped operation needs to be donde with sd-card
• Missing battery
• A bit complex for beginners

• thebitcoinhole.comthebitcoinhole.com

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