Zez Confrey, Carmen Cavallaro (pianist), Morris Stoloff Orchestra
{"copyright_id":"0xfa8da8fe5dcddf7c0bcb06c02c2eb8abeaae6eb5c818f0fbf4b78c10d34df8f9","name":"Zez Confrey, Carmen Cavallaro (pianist), Morris Stoloff Orchestra","registered_at":"2026-06-17T16:21:46Z","symbol":"NIM1451195","token_address":"0xeba9bdb8d7b4cb552adad3aea91b797e76f26179","type":"artist","uuid":"9174549c-2272-4a32-b45f-56134cb0d62a"}
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 0xfa8da8fe5dcddf7c0bcb06c02c2eb8abeaae6eb5c818f0fbf4b78c10d34df8f9. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9174549c-2272-4a32-b45f-56134cb0d62a.json and https://artists.proofprofile.net/proofs/artist/9174549c-2272-4a32-b45f-56134cb0d62a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).