My customer has created a platform where his clients upload music made by them. He would like to “certify” these files on the blockchain.
What I ask is: what is the best approach to accomplishing this?
I had thought of creating a smartcontract that would take two variables as input (eg: email creator and hash of the file) and write these values in blochckain.
Is this approach correct? Also, how could this smart contract write to the blockchain without gas? I should send him some ethereum first right? Any blockchain writing would also involve a high transaction cost … how could I optimize this thing?
I need your advice on how best to proceed to accomplish this.
Sorry for my bad english… I’m italian