Patent ID: 8725682

Claim:
A computer-implemented comprising: combining, by a system comprising a processor, a first one-way hash associated with an original state of a first digital object and a second one-way hash associated with a modified state of the first digital object; comparing, by the system, the combination of the first one-way hash and the second one-way hash of the first digital object with a previously received third one-way hash and fourth one-way hash combination, wherein the third one-way hash relates to a first state of a second digital object and the fourth one-way hash relates to a second state of the second digital object; and determining, by the system, based at least in part on the combination of the first one-way hash and the second one-way hash in relation to the third one-way hash and the fourth one-way hash, whether a second digital object is the same as the first digital object, wherein in response to determining that the first one-way hash and the third one-way hash have the same value and that the second one-way hash and the fourth one-way hash have the same value, deeming, by the system, the first digital object and the second digital object are the same.