Coldcard Mk4 / Q (Bitcoin Transaction Signer)

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1

Website

Short description

  • USB-C Connector
  • NFC Tap
  • Virtual Disk
  • NFC Push Transaction
  • Rugged & Sleek Protective cover
  • Dual Secure Element for Key Storage
  • Genuine vs. Caution Lights
  • Anti-phishing Words
  • Air Gap Operation
  • Dice Roll and Provable Bitcoin Seed Generation
  • Trick PIN Features

Why I think this tool should be added

Best Bitcoin hardware transaction signer there is.

Section on Privacy Guides

crypto

2

Does this support Monero? I see Coldcard listed in the Monero.com app but I can’t figure out how this works or find any documentation about this. Maybe that is just untrue, but without a device I can’t test.

Ironically while people are concerned about Ledger’s security practices, Coldcard had an actual hardware vulnerability discovered by Ledger in the past, which seems pretty uncommon in the hardware wallet space. Pretty concerning even if old.

3

This is a bug. Coldcard should not be visible in the Monero.com app; it does not support Monero.

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4

Thanks for confirming. I don’t see how we could recommend any devices that don’t support transacting privately at this time: I’ll mark this as rejected because we would need to decide that we want to recommend tools for Bitcoin in general first which is a larger discussion for the community to have.

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