Merchandise-Integral Transaction Receipt and Auditable Product Ownership Trail
First Claim
1. A computer-implemented method of providing a product-integral transaction receipt, comprising:
- computing, for each transfer of the product, a cryptographic signature over fields describing the transfer, the fields comprising at least a non-changeable globally-unique identifier computed to represent the transfer;
for each transfer of the product, permanently recording the cryptographic signature and at least a portion of the fields describing the transfer on the product in a memory of a product-integral device, the portion comprising at least the non-changeable globally-unique identifier; and
recording, for each transfer of the product, a copy of the cryptographic signature and the fields in a separate repository.
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Accused Products
Abstract
Techniques are disclosed for writing data directly onto a product to record each ownership transfer. As a result, the product itself now carries a traceable, auditable, non-forgeable, non-repudiable proof of ownership (and, optionally, ownership history) that can be used in a variety of ways. This recorded ownership transfer information provides an electronic receipt, which may be used by the present owner to prove his or her ownership. (Optionally, other types of transfers may be recorded in addition to, or instead of, ownership transfers.) A transfer agent or registrar may create a unique transaction identifier to represent the transfer, and preferably creates a cryptographic signature over fields representing the transfer. This information may be recorded in a repository that is external from the product.
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Citations
9 Claims
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1. A computer-implemented method of providing a product-integral transaction receipt, comprising:
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computing, for each transfer of the product, a cryptographic signature over fields describing the transfer, the fields comprising at least a non-changeable globally-unique identifier computed to represent the transfer; for each transfer of the product, permanently recording the cryptographic signature and at least a portion of the fields describing the transfer on the product in a memory of a product-integral device, the portion comprising at least the non-changeable globally-unique identifier; and recording, for each transfer of the product, a copy of the cryptographic signature and the fields in a separate repository. - View Dependent Claims (2, 3)
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4. A system for providing a product-integral transaction receipt, comprising:
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a computer comprising a processor; and instructions which are executable, using the processor, to perform functions comprising; computing, for each transfer of the product, a cryptographic signature over fields describing the transfer, the fields comprising at least a non-changeable globally-unique identifier computed to represent the transfer; for each transfer of the product, permanently recording the cryptographic signature and at least a portion of the fields describing the transfer on the product in a memory of a product-integral device, the portion comprising at least the non-changeable globally-unique identifier; and recording, for each transfer of the product, a copy of the cryptographic signature and the fields in a separate repository. - View Dependent Claims (5, 6)
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7. A computer program product for providing a product-integral transaction receipt, the computer program product embodied on at least one non-transitory computer-usable storage media having computer-usable program code embodied therein which, when executed on a computer, causes the computer to perform functions comprising:
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computing, for each transfer of the product, a cryptographic signature over fields describing the transfer, the fields comprising at least a non-changeable globally-unique identifier computed to represent the transfer; for each transfer of the product, permanently recording the cryptographic signature and at least a portion of the fields describing the transfer on the product in a memory of a product-integral device, the portion comprising at least the non-changeable globally-unique identifier; and recording, for each transfer of the product, a copy of the cryptographic signature and the fields in a separate repository. - View Dependent Claims (8, 9)
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Specification