Yokohama Soei Junior & Senior High School Wind Orchestra
{"copyright_id":"0x19e605b75b8fecf3eeabb32f5a002088f2bfb5ac69f6d2af5170429e8e811aa8","name":"Yokohama Soei Junior & Senior High School Wind Orchestra","registered_at":"2026-06-17T04:53:19Z","symbol":"NIM1287067","token_address":"0xd70ac851f2c2771fb547b09fd55f858c3de41266","type":"artist","uuid":"7077a693-8e6d-483e-8c5f-ca7b2247616c"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e605b75b8fecf3eeabb32f5a002088f2bfb5ac69f6d2af5170429e8e811aa8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7077a693-8e6d-483e-8c5f-ca7b2247616c.json and https://artists.proofprofile.net/proofs/artist/7077a693-8e6d-483e-8c5f-ca7b2247616c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).