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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.

  3. Timestamp - Wikipedia

    en.wikipedia.org/wiki/Timestamp

    A timestamp is a sequence of characters or encoded information identifying when a certain event occurred, usually giving date and time of day, sometimes accurate to a small fraction of a second.

  4. Timestamping (computing) - Wikipedia

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

    In computing, timestamping refers to the use of an electronic timestamp to provide a temporal order among a set of events.. Timestamping techniques are used in a variety of computing fields, from network management and computer security to concurrency control.

  5. Time stamp protocol - Wikipedia

    en.wikipedia.org/wiki/Time_stamp_protocol

    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.

  6. Epoch (computing) - Wikipedia

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

    Software timekeeping systems vary widely in the resolution of time measurement; some systems may use time units as large as a day, while others may use nanoseconds.For example, for an epoch date of midnight UTC (00:00) on 1 January 1900, and a time unit of a second, the time of the midnight (24:00) between 1 January 1900 and 2 January 1900 is represented by the number 86400, the number of ...

  7. List of logic symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_logic_symbols

    In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.

  8. Snowflake ID - Wikipedia

    en.wikipedia.org/wiki/Snowflake_ID

    A tweet produced by @Wikipedia in June 2022 [4] has the snowflake ID 1541815603606036480.The number may be converted to binary as 00 0001 0101 0110 0101 1010 0001 0001 1111 0110 0010 00|01 0111 1010|0000 0000 0000, with pipe symbols denoting the three parts of the ID.

  9. ISO 8601 - Wikipedia

    en.wikipedia.org/wiki/ISO_8601

    ISO 8601 is an international standard covering the worldwide exchange and communication of date and time-related data.It is maintained by the International Organization for Standardization (ISO) and was first published in 1988, with updates in 1991, 2000, 2004, and 2019, and an amendment in 2022. [1]