Importance

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Abstract

A data processing system including a write-once data-recording medium facilitates the creation and archiving of authenticated data records. In various aspects, a data-file depositor authenticates contents of a data file destined for recordation on the data-recording medium by associating with the data file a unique, depositor-specific signal indicative of the data-file depositor's intent to authenticate the data file contents. Additionally, various implementations facilitate the association with the data file of a witness-specific signal which, when so associated, constitutes evidence of a witness candidate's intent to verify at least the existence of the data file as of a time certain. In various implementations, a time of occurrence of at least one predetermined event related to at least one of the creation, saving and witnessing of the data file is associated with the data file. In accordance with some implementations, data files are placed in the custody of a data custodian.

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First Claim