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 0x1e0997dea0e18ed98adf9d2cf6a4d0531d4e047142e93016c203c3304918d046. 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/93ddb653-5e86-4e2f-ac0b-b3668ded68e0.json and https://artists.proofprofile.net/proofs/artist/93ddb653-5e86-4e2f-ac0b-b3668ded68e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach: Concertos pour 3 et 4 pianos, BWV 1063, 1064 & 1065
Bach, JS: Concerto for 4 Keyboards in A Minor, BWV 1065: I. Allegro
Orchestre de chambre Jean-François Paillard
Bach, JS: Concerto for 4 Keyboards in A Minor, BWV 1065: II. Largo
Bach, JS: Concerto for 4 Keyboards in A Minor, BWV 1065: III. Allegro
Bach, JS: Concerto for 3 Keyboards in D Minor, BWV 1063: I. Allegro
Bach, JS: Concerto for 3 Keyboards in D Minor, BWV 1063: II. Alla siciliana
Bach, JS: Concerto for 3 Keyboards in D Minor, BWV 1063: III. Allegro
Bach, JS: Concerto for 3 Keyboards in C Major, BWV 1064: I. Allegro
Bach, JS: Concerto for 3 Keyboards in C Major, BWV 1064: II. Adagio
Bach, JS: Concerto for 3 Keyboards in C Major, BWV 1064: III. Allegro
Berg ∙ Brahms ∙ Poulenc ∙ Schumann: Sonatas for Clarinet and Piano
Sonata for Clarinet and Piano: I. Allegro tristamente
Sonata for Clarinet and Piano: II. Romanza
Sonata for Clarinet and Piano: III. Allegro con fuoco
Phantasiestücke Op. 73: I. Zart und mit Ausdruck
Phantasiestücke Op. 73: II. Lebhaft, leicht
Phantasiestücke Op. 73: III. Rasch und mit Feuer
Drei Romanzen Op. 94: No. 1, Romanze in A Minor
Drei Romanzen Op. 94: No. 2, Romanze in A Major
Drei Romanzen Op. 94: No. 3, Romanze in A Minor
Sonata No. 2 in E-Flat Major Op. 120: I. Allegro amabile
Sonata No. 2 in E-Flat Major Op. 120: II. Allegro appassionato
Sonata No. 2 in E-Flat Major Op. 120: III. Andante con moto - Allegro
Four Pieces for Clarinet and Piano: I. Maßig
Four Pieces for Clarinet and Piano: II. Sehr langsam
Four Pieces for Clarinet and Piano: III. Sehr rasch
Four Pieces for Clarinet and Piano: IV. Langsam
Saint-Saëns: Le carnaval des animaux, R 125: VII. Aquarium
Saint-Saëns: Le carnaval des animaux: XIII. Le cygne