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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcdd17fd010aacb57ed264419b87f001c2604f4b1187cf72e4aaf4f327e50ab. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85a9c334-160a-41f2-a186-7d91b4d2c2d1.json and https://artists.proofprofile.net/proofs/artist/85a9c334-160a-41f2-a186-7d91b4d2c2d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'Histoire du soldat: La marche du soldat
Igor Stravinsky: The Firebird, Symphony in C Major, The Wedding, L'Histoire du soldat, Three Pieces & Concertino for String Quartet, Shakespeare Songs
L'Histoire du soldat, Scène 1: Airs auprès du ruisseau
L'Histoire du soldat, Scène 2: Pastorale
L'Histoire du soldat, Scène 2: Marche royale
L'Histoire du soldat, Scène 2: Petit concert
L'Histoire du soldat, Scène 2: Trois danses, Tango, Valse, Ragtime
L'Histoire du soldat, Scène 2: Danse du diable
L'Histoire du soldat, Scène 2: Grand Choral
L'Histoire du soldat, Scène 2: Marche triomphale du diable