Proof.ink

Proven immutable data stored on the Steem blockchain

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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.

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