Stampery is a verification and certification platform that generates legal proofs for all its customers sensitive documents using bitcoin’s blockchain. Its service can be used to attest the integrity, existence, ownership, and receipt of any file or communication as well as to certify digital transactions to generate audit trails, protect its customer’s intellectual properties, and to prove proprietorship of digital assets. Stampery charges a service fee from its clients depending on the number of file transactions and utilization of storage space on a monthly basis.