The is a battery electric car produced by Nissan since 2010. It was offered exclusively as a 5-door hatchback which since then has become a crossover SUV model. The term "LEAF" serves as a backronym
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e6ae8d931bc5b8bf5b133f6c65f0c38141c5cd7132ec8822b26ad2a7d9f20c. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ab3bd88-322b-4a48-b761-47e39d1378e9.json and https://artists.proofprofile.net/proofs/artist/1ab3bd88-322b-4a48-b761-47e39d1378e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).