32 sats \ 1 reply \ @DarthCoin OP 3 Apr \ parent \ on: Proof of Existence - Your Bitcoin online notary bitcoin
No, on the blockchain you only store a bunch of text data (OP_RETURN) that prove the existence of a document (wherever is stored) in a certain point in time.
You do not need to store the document on the blockchain, that's insane.
They use a unique header DOCPROOF, which you can look for on chain
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