1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x930b2887d956432ef674c63eb31d5601dbb940e4354f6db09ffb015dc99b9bb9. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bba4d27-f1f1-4ded-8cba-1842d08954bc.json and https://artists.proofprofile.net/proofs/artist/2bba4d27-f1f1-4ded-8cba-1842d08954bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cyrano de Berzerac / Music for the Theatre, Vol. 2
The Fair / Music for the Theatre, Vol. 3
The Third Wedding / Music for the Theatre, Vol. 4
The End of an Era / Music for the Theatre, Vol. 1
The Collection / Music for the Theatre, Vol. 6
The Refugee's Song / from the opera Eleftherios Venizelos
Prelude / from the opera Eleftherios Venizelos
Woe from Wit / Music for the Theatre, Vol. 7