A system for verifying a recording. The system comprises at least one processor, at least one non-transitory computer readable storage medium storing instructions thereon that, when executed by the at least one processor, cause the system to verify an electronic recording file comprising a cryptographic hash function based on the recording and generated by a first electronic device, verifying the electronic recording file comprises generating a pair of certification requests. A first of the pair of certification requests is based on the cryptographic hash function, and a second of the pair of certification requests is based on the cryptographic hash function in combination with one or more further pieces of data associated with the recording. The one or more further pieces of data comprise metadata associated with the recording and/or the first electronic device, sending the pair of certification requests to a blockchain, and receiving confirmation of the approval of the pair of certification requests by the blockchain.