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Identity networks authenticate rare books by linking digital certificates to physical copies via blockchain. Each book’s unique attributes (e.g., edition, provenance) are stored as verifiable credentials (VCs). Collectors or institutions can verify authenticity by scanning QR codes or NFC tags, which access the decentralized ledger. This prevents forgery, as tampering with physical attributes would invalidate the digital record. Such networks ensure transparency and trust in rare book markets, protecting historical and cultural heritage.

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