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Timestamp

Definitions:

  A token or packet of information that is used to provide assurance of timeliness; the timestamp contains timestamped data, including a time, and a signature generated by a Trusted Timestamp Authority (TTA).
Sources:
NIST SP 800-102

  A token of information that is used to provide assurance of timeliness; contains timestamped data, including time, and a signature generated by a Trusted Timestamp Authority (TTA).
Sources:
NIST SP 800-89