Stampery

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 customers' intellectual properties, and prove proprietorship of digital assets. Stampery charges a service fee from its clients depending on the number of file transactions and the utilization of storage space on a monthly basis.