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Identity networks address autograph authentication by issuing digital certificates linked to physical items via NFC/RFID tags or QR codes. Blockchain records provenance, expert appraisals, and ownership history. Verifiable credentials (VCs) for collectors prove legitimacy without exposing sensitive data. AI compares signatures against certified templates, while decentralized identifiers (DIDs) ensure tamper-proof records. Interoperable standards enable global verification across auction houses, museums, and online marketplaces.
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