Abstract: A method of securely serializing product units to provide a trusted basis for the recording of transaction events reflecting distribution actions within and between supply chain participant vendors. The method involves receiving vendor data including vendor public data descriptive of a given product unit, generating a unique serial number to be securely associated with the given product unit, the unique serial number including a public serial number and a unique nonce, generating a cryptographic hash of the unique serial number and the vendor public data, generating a cryptographic signature of the cryptographic hash using a predetermined private key, and returning marking data including the public serial number.

Abstract: A networked computer system that manages the collection, secure recording, and reporting of supply chain transactions within and between independent supply chain participants, including consumers. The system includes a platform controller, responsive to transaction requests from supply chain participants, that directs, subject to participant access verification, the creation of a blockchain record by a secure distributed ledger server node, where the record includes a supply chain unit unique serial number, a timestamp, transaction event data, and, optionally, private supply chain participant data. An access manager operates to perform participant access verification by securely verifying the identity of the supply chain participant making the transaction request.

Abstract: A method of securely serializing product units to provide a trusted basis for the recording of transaction events reflecting distribution actions within and between supply chain participant vendors. The method involves receiving vendor data including vendor public data descriptive of a given product unit, generating a unique serial number to be securely associated with the given product unit, the unique serial number including a public serial number and a unique nonce, generating a cryptographic hash of the unique serial number and the vendor public data, generating a cryptographic signature of the cryptographic hash using a predetermined private key, and returning marking data including the public serial number.

Abstract: A supply chain management server system reports the distribution path of a product unit through a supply chain in response to a query request as provided by a supply chain participant computer system The request and included query parameters determine an initial secure hash value uniquely identified with a product unit. The server system iteratively retrieves blockchain records identified with a key secure hash value from a blockchain hosted by distributed ledger nodes. Each blockchain record stores the key secure hash value and a respective transaction event record. Select transaction event records store reference secure hash values. The key secure hash value is initially selected from the initial secure hash value and subsequently selected from the reference secure hash values. Distribution path data is collected from the retrieved transaction event records and returned as a report of distribution path of the product unit to the requesting computer system.