I am the co-founder of an early-stage startup that aims to prove existence of various qualifications (academic, professional...) via the Bitcoin Blockchain.
In order to validate a piece of data, an issuer (say a university or other issuing body) would have to send a small transaction from their wallet which is managed by us.
Is there any way to officially prove (in this case in UK legislation) that a specific legal entity is in possession of a bitcoin private key and, therefore, to the coins associated with it? I know of a "statutory declaration" but is there anything more specific I can do?
Basically I would like to transfer ownership of the wallet to the customer, in order for myself to be criminally punishable if I upload qualifications to the Blockchain without their consent.
Is this at all possible?