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Systems and methods for verifying an electronic documents provenance date

  • US 8,677,133 B1
  • Filed: 02/10/2009
  • Issued: 03/18/2014
  • Est. Priority Date: 02/10/2009
  • Status: Active Grant
First Claim
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1. A method for confirming a provenance date of an electronic document, the method comprising:

  • obtaining the electronic document from a document provider at a first node of a computer network;

    obtaining a verification application from an authorization entity at a second node of a computer network;

    executing the verification application on the electronic document to create a verification checksum associated with the electronic document;

    providing a unique resource identifier and a decryption key to obtain a comparison checksum that has been stored independently from the electronic document at the authorization entity, the authorization entity maintaining a timestamp specifying a time when the comparison checksum was signed; and

    comparing the verification checksum with the comparison checksum, wherein if the verification checksum matches the comparison checksum, the provenance date of the electronic document is confirmed by the timestamp.

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