Proof.ink
Proven immutable data stored on the Steem blockchain
Proof.ink launched on February 4, 2019 with 100 votes, #317 of 3,290 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 7 years on.
What it does
Proof.ink's service is pretty straightforward. If you have a document of which you want to know with 100% certainty that it's contents has not been changed, tampered with or altered in any form, use Proof.ink. Proof.ink works by fingerprinting your file (no matter how big), without the need to upload it, inside your browser.
File hashes stored on the Hive blockchain. Tamperproof blockchain-based file fingerprint integrity.
Note that the fingerprint and any additional posted data is publicly verifyable and visible on the hive blockchain. The fingerprint will be stored utilising the public transfer method. Therefore you need to pick an (any) amount of Hive or HBD you need to send. Your donation will be used to maintain this service. Proof.ink's service is pretty straightforward. If you have a document of which you want to know with 100% certainty that it's contents has not been changed, tampered with or altered in any form, use Proof.ink. Proof.ink works by fingerprinting your file (no matter how big), without the need to upload it, inside your browser. The result of this calculation is a unique SHA256 hash /…from proof.ink
Does a similar job
all alternatives →
Stampd.io - A document blockchain stamping service2015 · stampd.io · ▲32Use the public blockchains to timestamp your files with indelible proof. Create non-fungible tokens (NFT) in Cardano.
Source: Product Hunt launch ↗
Launched alongside, February 2019
the whole month →- MY
Make your site’s pages instant in 1 minute and improve your conversion rate by 1%.
Life & fun · 2019 · instant.page
Computer generated people - refresh to get a new one
AI · 2019 · thispersondoesnotexist.com
