Blockchain Timestamp vs. RFC 3161 Trusted Timestamp
Compare blockchain-anchored hashes with RFC 3161 TSA tokens and how ProofIt can use both.
Published 2026-08-12 · ProofIt Editorial
Direct answer
A blockchain record anchors a hash in a public ledger. An RFC 3161 trusted timestamp is a digitally signed time assertion from a Time Stamping Authority over a hash. They are complementary evidence types.
Definitions
RFC 3161 defines a standard request/response for TSA tokens. Blockchain anchoring depends on the network and the data written in the transaction or contract.
Where ProofIt fits
ProofIt can store Sectigo RFC 3161 tokens with certificates and register hashes on Ethereum. TSA tokens remain independently verifiable if retained; ProofIt-hosted certificate access follows retention policy.