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Keep

Self-custodial key management for Nostr and Bitcoin.

Keep is an encrypted vault for Nostr and Bitcoin keys. It stores keys locally with strong encryption, signs remotely via NIP-46 without exposing private keys, and supports FROST threshold signatures so no single device ever holds enough to spend.

Keep runs as a CLI, a desktop app (Linux/macOS/Windows), a mobile library (Android/iOS via UniFFI), a StartOS service for always-on FROST co-signing, or inside AWS Nitro Enclaves for hardware-isolated signing.

Where to start

  • Usage — install the CLI, create a vault, generate keys, remote signing, Bitcoin, FROST, agents, and troubleshooting.
  • Security — cryptography and threat model.
  • AWS Nitro Enclaves — hardware-isolated signing deployment.
  • Release Signing — how Keep threshold-signs its own releases.
  • Reproducible Builds — verifying builds bit-for-bit.