what's Coinkite?

Coinkite is a Bitcoin-focused hardware company specializing in secure self-custody solutions. Founded to prioritize user sovereignty and privacy, it develops devices that enable users to manage their Bitcoin holdings without relying on third-party custodians. The company's flagship product, the Coldcard hardware wallet, supports air-gapped signing, multi-signature setups, and advanced spending policies to enhance security against theft and loss. Coinkite's devices integrate features like PSBT (Partially Signed Bitcoin Transactions) support, seed phrase generation with dice rolls for entropy, and compatibility with various Bitcoin software wallets. Beyond Coldcard, products like Opendime offer innovative ways to physically transfer Bitcoin value, functioning as a bearer instrument. The company emphasizes open-source firmware where possible, allowing community audits, while maintaining proprietary hardware designs for robustness. As a Bitcoin-only entity, Coinkite avoids altcoins to focus on core Bitcoin principles. It contributes to the ecosystem through educational resources, firmware updates, and advocacy for self-custody, helping users navigate operational challenges in Bitcoin management.

Coinkite launches COLDCARD Mk5 hardware wallet.