httptimestampdigicertcom

The term httptimestampdigicertcom refers to DigiCert’s timestamping service, a Time-Stamping Authority (TSA) that issues timestamp tokens used to prove the existence of a digital signature or data at a specific time. The service is typically accessed via the timestamp.digicert.com endpoint over HTTP or HTTPS and is designed to integrate with various signing workflows.

The core function of the DigiCert timestamp service is to provide RFC 3161-compliant timestamp tokens. A client sends a timestamp request that includes a hash of the data being signed, and the TSA responds with a signed token that binds the hashed data to a trusted time. The tokens include the time, the hash, and references to the TSA’s certificate chain, enabling future verification of when the signature was created.

In practice, the service is used in code signing, document signing, and other archival or legal workflows where proving the time of signing is important. Embedding the timestamp token in a signature helps maintain long-term verifiability even as the signer's certificate or intermediates expire or are revoked.

The DigiCert timestamp service is part of DigiCert’s PKI offerings and relies on secure transport and canonical TSA policies. It supports common hash algorithms (such as SHA-256) and is designed to be interoperable with standard signing tools that implement RFC 3161. Users should consider TSA uptime, certificate validity, and potential cross-certificates when planning long-term validation strategies.