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.
Built on a proven/scalable blockchain Steem.
Blockchain immutability feature accredits product's credibilty and integrity.
Easy to use.Cons:
Early days... Will get better with more use and reviews.
Steem as a blockchain platform offers the ideal environment for building social and crowd-related Dapps. The platform has an already existing community of users to increase Dapp adoption and utility with little cost.MainFrame World has used this product for one day.
Built on the immutable Steem Blockchain but a talented developerCons:
Early days - more users will arrive
Steem Blockchain has some brilliant qualities and is worth looking into.Crypto Curator has used this product for one day.