Hacker News Reader

Quick glance: there doesn't appear to be a way to link to specific messages for verification - I understand it will be difficult for large files, etc. but you can probably squeeze a base64-encoded value in the URL #hash for short messages.

Also HN, are there any other existing services for proofs?

View on HN

When you submit a message, I locally generate a file you can download (or copy to clipboard), that contains the message, hash and the release it will go to.

For text messages, I could also generate a special link. Good idea!

Edit: to follow up on your other question, I found a bunch of other services like that. Most of them are paid per proof, though.

https://stampd.io

https://proofofexistence.com

https://blocksign.com

https://www.blocknotary.com

https://opentimestamps.org (Free)

https://notary.bitcoin.com

Chainpoint.org

Oh, this is interesting. Somehow I haven't found it in my research.

Reply on news.ycombinator.com