COLDCARD Mk4 v5.4 & Q v1.3: XOR from Seed Vault, Optimizations & More

COLDCARD Mk4 is an affordable, ultra-secure, and verifiable hardware wallet for Bitcoin. COLDCARD Q is the higher-end COLDCARD that comes with a full QWERTY keyboard, a larger LCD screen, real QR scanner, and more.

https://www.nobsbitcoin.com/coldcard-mk4-v5-4-q-v1-3/

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