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 0x074e906e8f239193210c8d05323455c174088b2f03275b039b06e3c4e4b0d708. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/031e8b50-ec1d-46f1-bdf4-bb09e4173a6b.json and https://artists.proofprofile.net/proofs/artist/031e8b50-ec1d-46f1-bdf4-bb09e4173a6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Choi Sunkyung`s Ballet Class Music Vol. 1
Warming-up (The Man I Love by G. Gershwin)
Plies (Piano Sonata No.8 Op.13 by L. v. Beethoven)
Battements Tendus 1 (Harlequinade by R. Drigo)
Battements Tendus Jetes 1 (Die Moldau by B. Smetana)
Battements Tendus Jetes 2 (Piano Concerto No. 2 by C. Saint-Saens)
Ronds de Jambe a terre (Menuet in G minor by J. S. Bach)
Battements Frappes (Under the double eagle by R. Wagner)
Ronds de Jambe en l`air (La Campanella by F. Liszt)
Adagio (Songs My Mother Taught Me by A. Dvorak)
Grand Battements (Piano Concerto No. 2 by S. Rachmaninoff)
Adagio 1 (Die Millionen Des Harlekin by R. Drigo)
Battements Tendus (I`ll build a stairway to paradise by G. Gershwin)
Battements Fondus (Die Fledermaus by J. Strauss Ⅱ)
Petit Allegro 1 (Mack the Knife by K. Weill)
Petit Allegro 3 (Pineapple Rag by S. Joplin)
Medium Allegro 2 (Kunstlerleben by J. Strauss Ⅱ)
Grand Allegro 1 (Estudiantina by E. Waldteufel)
Tours 1 (Colonel Bogey March by K. J. Alford)
Tours en l`air (La Sylphide by J. Schneitzhoeffer)
Waltz 1 (The Skaters Waltz by É. Waldteufel)
Battements tendus jetes 1 (vol. 3 barre)
Battements tendus jetes 2 (vol. 3 barre)