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A physical COLDCARD hardware wallet device

What Is a Hardware Wallet? How It Works—and What It Cannot Protect

A hardware wallet is a signing boundary, not a container for coins.…

COLDCARD Bitcoin-only hardware wallet

Bitcoin-Only vs Multi-Coin Hardware Wallets: Fewer Features Can Be a Feature

Bitcoin-only hardware wallets can reduce unnecessary code and signing paths. Multi-coin wallets…

Ledger Nano S hardware wallet photographed close up

Open-Source vs Closed-Source Hardware Wallets: What You Are Actually Trusting

Open source improves inspectability; closed components may improve physical hardening. Neither label…

Trezor Model T hardware wallet close-up

How to Tell If a Hardware Wallet Has Been Tampered With

Damaged packaging matters, but the decisive red flags are a pre-generated seed,…

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