Alternatives

Products that do what BlkSeal does

Sign, Share and Verify trusted digital content.

1. 1SV
   Seal – Verifiable timestamp for your private ideas▲113

   2022 · docs.planet.ink

2. 2
   Documenso 2.0.0▲451

   Enterprise-Grade Signature Infrastructure for Everyone

   Nov 2025

3. 3
   TrustMRR▲836

   The database of verified startup revenues

   Nov 2025 · trustmrr.com

4. 4
   SignWell▲396

   Get documents signed quickly, securely & legally

   2024

5. 5
   WorkHub eSignature▲284

   Affordable digital signature software

   2022

6. 6
   ProveSource 3.0▲236

   The #1 Social Proof Platform for your website

   2024

7. 7
   Autoproof▲247

   Protect your company codebase

   2023

8. 8
   Documenso Platform Plan▲287

   Whitelabeled signing flows in your product

   2024

9. 9
   Stytch B2B Authentication▲122

   Build enterprise-ready auth into your B2B app

   2023

10. 10LS
    Let's Seal – Let's Encrypt for document signing, free and self-hosted▲94

    TLDR, Let's Seal gives the finger to Adobe and every doc signing tool (docusign, google, etc) who pay to play with the Adobe Approved Trust List and then charge you for something that should be free. Currently even the person checking if a document/contract is sealed or code is authentic has to also be inside the same Adobe walled garden too. Verification, the part that should be free is the part everyone charges for. Thats the shape Let's Encrypt fixed for TLS, and I wanted the same thing for documents and files. The core idea therefore needed to go a bit beyond e signatures and i…

    Jul 2026 · github.com

11. 11
    DataTrails▲111

    Content verification & misuse protection for Dropbox files

    2023

12. 12
    MonoCloud for Startups▲167

    One identity layer for your customers, APIs, and agents

    Jul 2026 · monocloud.com

13. 13
    Tesseral▲141

    Open source authentication infrastructure for B2B software

    2025

14. 14
    BlockRight▲102

    Decentralized copyright registration platform

    2019

15. 15
    SSOReady▲144

    Open source developer tools for enterprise single sign-on

    2024

16. 16
    Signer Authority▲5

    Secure e-signatures with cryptographic proof.

    Jul 2026 · signerauthority.com

17. 17
    Woleet▲73

    Bitcoin-anchored proof that documents are authentic

    May 2026 · woleet.io

18. 18
    Trustroot▲85

    Fraud and theft protection for cryptocurrency

    2018

19. 19GA
    Get a verifiable human proof seal for your content▲13

    Get a unique seal and url that is verifiable. Display a unique badge next to your content that proves there is a human behind the content.

    2023 · humanproved.com

20. 20BT
    btproof - trusted timestamping on the Bitcoin blockchain▲75

    2013 · btproof.com

21. 21
    yousaidthat.org▲63

    Prove that you said things before anyone else

    Jun 2026 · yousaidthat.org

22. 22BA
    Blocksign, a Bitcoin service for legally signing any document▲17

    2014 · blocksignit.com

23. 23HA
    Hash Archive helps you verify the hashes of insecure downloads▲52

    2016 · hash-archive.org

24. 24
    TrustSignal ▲1

    Evidence integrity infrastructure

    Mar 2026

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