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PrivKey

Open-source infrastructure for Bitcoin, Lightning, and Nostr. Self-custodial key management, FROST threshold signing, and high-performance relays.
README.md

PrivKey

Security-first, open-source tools for Bitcoin, Lightning, and Nostr. FROST threshold signing, self-custodial key management, and high-performance relays in Rust, Zig, and C. MIT licensed and self-hostable.

Keep, self-custodial key management for Nostr and Bitcoin, so no single device holds the whole key: keep (Rust), keep-android (Kotlin), keep-esp32 (C), keep-startos (TypeScript).

Libraries: libnostr-c, libnostr-z.

Tools: wisp (Nostr relay), noz (Nostr CLI), taproot-assets-rest-gateway, bosun (Bitcoin PR triage).

We do security research and upstream the fixes, memory-safety, DoS, and consensus hardening, across Bitcoin Core, Bitcoin Knots, Core Lightning, LDK, BDK, rust-miniscript, ZF FROST, Lightning BOLTs, and more. Full list at privkey.io.

Building since 2018. privkey.io · information@privkey.io · book a consultation

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  1. keep keep Public

    Self-custodial key management for Nostr and Bitcoin

    Rust 16 3

  2. wisp wisp Public

    Fast, lightweight Nostr relay with spider mode that syncs notes from people you follow.

    Zig 22

  3. libnostr-z libnostr-z Public

    Zig library for the Nostr protocol

    Zig 16

  4. libnostr-c libnostr-c Public

    Lightweight, portable C library for the Nostr protocol with native Lightning Network integration.

    C 14 1

  5. keep-android keep-android Public

    Android app for FROST threshold signing with NIP-55 support

    Kotlin 11 2

  6. shrike shrike Public

    Forked from sparrowwallet/sparrow

    Desktop Bitcoin wallet. Sparrow fork adding unified opt-in sighash support.

    Java 43 9

Repositories

Showing 10 of 90 repositories
  • keep Public

    Self-custodial key management for Nostr and Bitcoin

    privkeyio/keep's past year of commit activity
    Rust 16 MIT 3 25 3 Updated Nov 15, 2026
  • lightning Public Forked from ElementsProject/lightning

    Unofficial Core Lightning fork with BLAKE2b block header and unified signature support. Not audited.

    privkeyio/lightning's past year of commit activity
    C 8 1,112 1 4 Updated Nov 15, 2026
  • keep-android Public

    Android app for FROST threshold signing with NIP-55 support

    privkeyio/keep-android's past year of commit activity
    Kotlin 11 MIT 2 2 1 Updated Nov 15, 2026
  • mempool Public Forked from Horizon-btc/mempool

    Explore the Bitcoin ecosystem

    privkeyio/mempool's past year of commit activity
    TypeScript 0 1,347 0 5 Updated Nov 15, 2026
  • cln-startos Public Forked from Start9Labs/cln-startos

    Core Lightning with BLAKE2b block header and unified signature support, packaged for StartOS. Unofficial, not audited.

    privkeyio/cln-startos's past year of commit activity
    TypeScript 2 17 0 1 Updated Nov 15, 2026
  • BIPs Public Forked from Bitcoin-specs/BIPs

    Bitcoin Improvement Proposals

    privkeyio/BIPs's past year of commit activity
    Wikitext 0 8,191 0 0 Updated Nov 15, 2026
  • datum_gateway Public Forked from OCEAN-xyz/datum_gateway

    Decentralized Alternative Templates for Universal Mining

    privkeyio/datum_gateway's past year of commit activity
    C 1 91 0 6 Updated Nov 15, 2026
  • wisp Public

    Fast, lightweight Nostr relay with spider mode that syncs notes from people you follow.

    privkeyio/wisp's past year of commit activity
    Zig 22 MIT 0 19 0 Updated Nov 15, 2026
  • keep-esp32 Public

    Air-gapped FROST threshold signing device

    privkeyio/keep-esp32's past year of commit activity
    C 5 MIT 0 15 4 Updated Nov 14, 2026
  • lightning-fork Public Forked from paulscode/lightning-fork

    LND fork for the Bitcoin BLAKE2b chain: isolated from the SHA256d network by design

    privkeyio/lightning-fork's past year of commit activity
    Go 1 MIT 2,422 0 7 Updated Nov 14, 2026
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