{"copyright_id":"0x2c009ea0e601237eb34bc908dd39c5bcf8ccf2127acff64e1d6a3f2be5cc9fb8","name":"TAKARAZUKA - All Members","registered_at":"2026-06-17T17:37:18Z","symbol":"NIM1469226","token_address":"0x8c52de1e394f9c5cecd0c2f5b40fde09b3e53adc","type":"artist","uuid":"94cdedbe-99cf-4d06-9cc4-4ee45e8f2704"}
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 0x2c009ea0e601237eb34bc908dd39c5bcf8ccf2127acff64e1d6a3f2be5cc9fb8. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94cdedbe-99cf-4d06-9cc4-4ee45e8f2704.json and https://artists.proofprofile.net/proofs/artist/94cdedbe-99cf-4d06-9cc4-4ee45e8f2704.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).