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Developer working with code on a laptop

Token Approvals: Disconnecting a Wallet Does Not Revoke Permission

Disconnecting a dApp does not revoke its on-chain token approvals. Learn how…

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…

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