Frank Sinatra (performer), Guys and Dolls Chorus
{"copyright_id":"0x523fa390a17bd8f9af9e3e6eafc7df6749c620b179979c2528ea65a5df6e4e8c","name":"Frank Sinatra (performer), Guys and Dolls Chorus","registered_at":"2026-06-17T09:56:44Z","symbol":"NIM1359410","token_address":"0x5aba43690288e3d09aa4856944d2db30cfd9af74","type":"artist","uuid":"7f80f3ea-8ea9-4845-a6a3-1cd7bf503efb"}
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 0x523fa390a17bd8f9af9e3e6eafc7df6749c620b179979c2528ea65a5df6e4e8c. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f80f3ea-8ea9-4845-a6a3-1cd7bf503efb.json and https://artists.proofprofile.net/proofs/artist/7f80f3ea-8ea9-4845-a6a3-1cd7bf503efb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).