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2. Trusted timestamping - Wikipedia

   en.wikipedia.org/wiki/Trusted_timestamping

   Trusted timestamping is the process of securely keeping track of the creation and modification time 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. The administrative aspect involves setting ...

3. Time Stamp Counter - Wikipedia

   en.wikipedia.org/wiki/Time_Stamp_Counter

   A Linux boot log showing the usage of TSC as system clocksource. The Time Stamp Counter (TSC) is a 64-bit register present on all x86 processors since the Pentium. It counts the number of CPU cycles since its reset. The instruction RDTSC returns the TSC in EDX:EAX. In x86-64 mode, RDTSC also clears the upper 32 bits of RAX and RDX.

4. Year 2038 problem - Wikipedia

   en.wikipedia.org/wiki/Year_2038_problem

   The year 2038 problem (also known as Y2038, [1] Y2K38, Y2K38 superbug or the Epochalypse[2][3]) is a time computing problem that leaves some computer systems unable to represent times after 03:14:07 UTC on 19 January 2038. The problem exists in systems which measure Unix time —the number of seconds elapsed since the Unix epoch (00:00:00 UTC ...

5. OpenTimestamps - Wikipedia

   en.wikipedia.org/wiki/OpenTimestamps

   OpenTimestamps (OTS) is an open-source [2] project that aims to provide a standard format for blockchain timestamping. [3] With the advent of systems like Bitcoin, it is possible to create and verify proofs of existence of documents (timestamps) without relying on a trusted third party; this represents an enhancement in term of security, since it excludes the possibility of a malicious (or ...

6. Epoch (computing) - Wikipedia

   en.wikipedia.org/wiki/Epoch_(computing)

   Epoch (computing) In computing, an epoch is a fixed date and time used as a reference from which a computer measures system time. Most computer systems determine time as a number representing the seconds removed from a particular arbitrary date and time. For instance, Unix and POSIX measure time as the number of seconds that have passed since ...

7. Time stamp protocol - Wikipedia

   en.wikipedia.org/wiki/Time_stamp_protocol

   v. t. e. The Time-Stamp Protocol, or TSP is a cryptographic protocol for certifying timestamps using X.509 certificates and public key infrastructure. The timestamp is the signer's assertion that a piece of electronic data existed at or before a particular time. The protocol is defined in RFC 3161. One application of the protocol is to show ...