Ketil Haugsand/Norwegian Baroque Orchestra/Coro De Camara De Lisboa
{"copyright_id":"0xf822f86206c017963a2c4948760a1348b42a4a6dc836cfbc14fddf92a001bfd9","name":"Ketil Haugsand/Norwegian Baroque Orchestra/Coro De Camara De Lisboa","registered_at":"2026-06-21T04:10:48Z","symbol":"NIM1815324","token_address":"0xb4900cd7e77ed2dd8253a7fe035c15e80c76202c","type":"artist","uuid":"d90953a5-5d72-41ff-8a10-5fc962c031e3"}
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 0xf822f86206c017963a2c4948760a1348b42a4a6dc836cfbc14fddf92a001bfd9. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d90953a5-5d72-41ff-8a10-5fc962c031e3.json and https://artists.proofprofile.net/proofs/artist/d90953a5-5d72-41ff-8a10-5fc962c031e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).