Alternatives

Products that do what PSI-COMMIT does

Bitcoin anchored cryptographic commitments

1. 1TB
   The Bitcoin Note – Secure, Self-Custodial Bitcoin Wallets in Cash Form▲344

   2022 · offline.cash

2. 2
   TransferChain Send▲591

   Blockchain-based secure & private file sharing for everyone

   2023

3. 3
   Handshake▲217

   Put promises on the blockchain

   2018

4. 4
   Streaks▲123

   Commit to resolutions by staking money on the blockchain

   2023

5. 5
   Set in Block▲77

   Blockchain-based permanent message creator and reader

   2018

6. 6
   Woleet▲73

   Bitcoin-anchored proof that documents are authentic

   May 2026 · woleet.io

7. 7BT
   btproof - trusted timestamping on the Bitcoin blockchain▲75

   2013 · btproof.com

8. 8
   ConfessionChain▲93

   Anonymous confessions on the blockchain

   2018

9. 9SV
   Seal – Verifiable timestamp for your private ideas▲113

   2022 · docs.planet.ink

10. 10
    yousaidthat.org▲63

    Prove that you said things before anyone else

    Jun 2026 · yousaidthat.org

11. 11
    Bitproof▲113

    True certification in the bitcoin blockchain

    2015

12. 12
    Bitcoin-Safe Desktop Wallet (FOSS)▲66

    Free & OpenSource software for managing cold storage wallets

    Apr 2026 · bitcoin-safe.org

13. 13
    Lock▲61

    Protocol for safely storing and distributing Etheruem assets

    2019

14. 14
    USDX WALLET▲83

    Instant transfers without banks, borders or fees

    2019

15. 15
    Coinflo▲73

    The social wallet - It's like Venmo + Coinbase

    2017

16. 16
    Blocknify▲71

    Sign sensitive documents without sacrificing your privacy.

    2018

17. 17
    Bitsms▲78

    Send Bitcoin offline via SMS

    2020

18. 18
    Lockin▲2

    Commitment dApp for locking stablecoins to your goal

    6d ago · applockin.com

19. 19
    Sealed Forever▲2

    Write your message into the blockchain. Keep it forever.

    15d ago · sealedforever.com

20. 20
    StakeLiGames▲7

    Protocol to stake on your LinkedIn games performance

    Dec 2025

21. 21BA
    Blocksign, a Bitcoin service for legally signing any document▲17

    2014 · blocksignit.com

22. 22VG
    Vanity Git commit hash generator▲19

    Hi HN! This is just a fun little tool I made after I got nerdsniped by noticing that one of my commits naturally started with "fae". I thought that was cute, so I looked up existing tools that make vanity commit hashes, but none of them seemed great to me (and none supporting signing commits). I learned a fair deal about how git actually stores commits while making this, and I think I came up with a novel way to generate a vanity hash: adding an extra header to the commit file. This was just a quick project to satisfy my curiosity, but I thought you all might find it neat. Notice that all…

    2023 · git.anna.lgbt

23. 23
    Incipite▲2

    Proof that holds up without asking anyone to trust you.

    27d ago · incipite.com

24. 24BA
    Bithoven – A high-level, imperative language for Bitcoin Smart Contract▲27

    Hey HN! I’m a researcher working on Bitcoin smart contracts, and today I’m releasing Bithoven—a high-level imperative language that compiles to native Bitcoin Script (Legacy, SegWit, and Taproot). The Goal: Raw Bitcoin Script is notoriously difficult to reason about. Writing raw Bitcoin Script today feels like writing Assembly in the 1970s. You have to mentally juggle the stack (`OP_SWAP`, `OP_ROT`), manually manage distinct execution branches, and pray you didn't leave a stack item unconsumed (which crashes the script). My goal was to bridge the gap between complex contract logic and raw…

    Dec 2025 · github.com

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