Trusted timestamping is the process of securely keeping track of the creation
and modification times of a document. Security here means that no one - not
even the owner of the document - should be able to change it once it has been
recorded provided that the timestamper’s integrity is never compromised.
(Wikipedia: The Free Encyclopedia, s.v. “Trusted Timestamping”)
TSAmpa is a customer-hosted (on-premise or cloud) timestamping authority that provides RFC 3161 or Microsoft Authenticode timestamps to time-sensitive transactions.
TSAmpa is well suited to organizations running systems that operate offline yet still need timestamping services.
Offline Code Signing
TSAmpa allows an organization to apply timestamps when digitally signing applications on offline or disconnected networks. By operating TSAmpa on the same network, organizations can digitally sign and timestamp applications without exposing signature keys to the Internet and the malware designed to steal or misuse code signing credentials.