Combining chips with blockchain can create a "lifetime pet ID." A microchip implanted in a pet stores a unique ID, linked to a blockchain database. This decentralized, tamper-proof system securely records the pet’s identity, medical history, and ownership details. Unlike traditional databases, blockchain ensures data integrity and prevents unauthorized changes. Owners can update records, like vaccinations or transfers, via secure transactions. Vets and shelters can scan the chip to access verified information instantly, reducing lost pets and fraud. The system’s permanence and global accessibility make it ideal for a lifelong pet ID, ensuring traceability and trust across borders. Challenges like implantation costs and blockchain scalability exist, but the technology’s potential is transformative.