Life & fun · alternatives · 2026

24 alternatives to Stampd.io - A document blockchain stamping service

Use the public blockchains to timestamp your files with indelible proof. Create non-fungible tokens (NFT) in Cardano.

Stampd.io is a blockchain timestamping service that records files on public blockchains with permanent proof of existence. It allows users to mint NFTs on Cardano and tokenize physical objects using NFC tags, creating… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Stampd.io - A document blockchain stamping service launched in 2015; newer entries below may have overtaken it.

1. 1
   STAMPD.IO▲5

   Use the Blockchain to timestamp files with indelible proof.

   2019 · stampd.io · its alternatives →

2. 2
   Stampd▲68

   A document blockchain stamping service

   2015 · stampd.io · its alternatives →

3. 3
   Nifty Ink▲170

   Draw something and make it a NFT for less than 1 cent

   2021 · nifty.ink · its alternatives →

4. 4
   Claimby▲107

   Free legally-valid timestamps for your files, ideas & art.

   2018 · claimby.com · its alternatives →

5. 5
   Frost▲200

   An open API for Blockchain timestamping

   2018 · its alternatives →

6. 6BT
   btproof - trusted timestamping on the Bitcoin blockchain▲75

   Find information, resources and relevant links for btproof.com. This domain may be for sale.

   2013 · btproof.com · its alternatives →

7. 7
   Stampery for iOS▲104

   Certify voice notes, photos or files using the Blockchain

   2015 · apps.apple.com · its alternatives →

8. 8
   Proof.ink▲100

   Proven immutable data stored on the Steem blockchain

   2019 · proof.ink · its alternatives →

9. 9
   Plasma Wallet▲272

   All-in-one Mobile App for your crypto, DeFi and NFTs

   2022 · apps.apple.com · its alternatives →

10. 10
    TimeSeal▲116

    Restoring digital trust, one blockchain timestamp at a time

    2023 · timeseal.com · its alternatives →

11. 11
    Blocknify▲71

    Sign sensitive documents without sacrificing your privacy.

    2018 · its alternatives →

12. 12
    Stampery▲118

    Certify your emails using the blockchain

    2015 · stampery.com · its alternatives →

13. 13
    Paper.xyz▲192

    NFT checkout with credit cards & cross-chain crypto

    2022 · its alternatives →

14. 14
    pfpid▲149

    The decentralised identity primitive

    2022 · its alternatives →

15. 15
    Chainkit from PencilDATA▲69

    Add blockchain integrity to your data and apps in 5 minutes

    2018 · its alternatives →

16. 16
    TxHash Blockchain as a Service▲120

    Cryptocurrency and smart contract event notifications

    2018 · its alternatives →

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

    Blockchain is a wonderful record keeper that can track every transaction that happens in the string.

    2014 · blocksignit.com · its alternatives →

18. 18
    NoteChain▲109

    A beautiful note taking app running on Ethereum Blockchain

    2018 · its alternatives →

19. 19
    0xcert▲123

    Your ID, degree or house. 0xcert-ified on the blockchain

    2018 · its alternatives →

20. 20
    CryptoProof – post proofs to the Ethereum blockchain for free▲55

    CryptoProof ran from 2018 to 2021, as a free timestamping service on Ethereum.

    2018 · cryptoproof.org · its alternatives →

21. 21
    Inscribe▲112

    A protocol for rich, verified signatures on any NFT

    2021 · inscribe.so · its alternatives →

22. 22
    Blocky▲90

    An all-in-one cryptocurrency bot

    2018 · chainlabs.ai · its alternatives →

23. 23
    Cryptibles▲97

    Create and share blockchain-tied digital collectibles.

    2017 · cryptibles.com · its alternatives →

24. 24
    CryptoCanvas▲71

    Create, Trade & Collect Blockchain Artworks

    2018 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →