Stampery
Proof of ownership : Certify that a file or email is authored by you.
Proof of existence : Certify that a file or email existed at a certain point of time.
Proof of integrity : Certify that a file or email was not tampered with. Legally binding : All certificates are 100% counterfeit-proof and verifiable by independent third parties. State of the art security : Your files are stored encrypted, your timestamps are embedded in the bitcoin blockchain. Bulk services : Connect with our API in order to integrate timestamping and proof of ownership to your service.
