perhaps you must be thinking of using blockchain just to store the hash of the files so you can check against it using private key, in that case as a one way ha

perhaps you must be thinking of using blockchain just to store the hash of the files so you can check against it using private key, in that case as a one way hash it “maybe” be fine. but then again that wont be a fully decentralized system. i was thinking of a full on decentralized future where every file and data (encrypted / hashed address) are sitting exposed on the blockchain ala ipfs, etc. where only thing preventing it being decrypted is just a key. not sure how far we are away from quantum computing but it might make what is considered standard encryption process obsolete. it wasnt even that long ago where cracking md5, sha1 became a piece of cake.