A system receives a media sample. The system then identifies a critical portion of the media sample. The media sample is split into a verification sample comprising the critical portion of the media sample. The verification sample is decomposed into a first and second layer. A first hash value is generated based on the first layer by applying a hash function to a first code element from the verification sample. A second hash value is generated based on the second layer by applying the hash function to a second code element from the verification sample. A blockchain transaction is generated comprising a profile associated with the user. The transaction is stored as a block in a blockchain ledger.