With the popularization of electronic transactions, the security of electronic transactions has gradually become the focus of people's attention. However, to ensure the non-repudiation of transactions, it is impossible to rely on pure digital signature technology.In order to achieve non-repudiation, not only the transaction data needs to be digitally signed, but also the proof-of-existence of the transaction data must be guaranteed at a certain time.This is usually done with timestamps.

JIT timestamp server is a TSA hardware product developed based on PKI technology.It uses precise time source, high strength, high standard of security mechanism, the server can provide users with accurate, and non-repudiation of the timestamp service.At the same time it can strictly follow international standards (RFC3161) and RFC2630 two timestamp the timestamp of the agreement  through the HTTP protocol, with a standard timestamp request, timestamp reply and timestamp coding format, it has good compatibility, suitable for electronic medical records, electronic insurance policy and program code signing in the process of release time sensitive business scenario.