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 0x8d57bfc04744a671615e158e2cb3d73469a3a85d9ecbccc82b429d354c25a200. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0b5ee5a-aa39-465b-9325-7e70c416a016.json and https://artists.proofprofile.net/proofs/artist/f0b5ee5a-aa39-465b-9325-7e70c416a016.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Berlioz: Harold In Italy; Bloch: Voice In The Wilderness
Harold en Italie, Op. 16, H.68: 1. Harold aux montagnes (Adagio - Allegro)
Harold en Italie, Op. 16, H.68: 2. Marche des Pèlerins (Allegretto)
Harold en Italie, Op. 16, H.68: 3. Sérénade (Allegro assai - Allegretto)
Harold en Italie, Op. 16, H.68: 4. Orgie de brigands (Allegro frenetico - Adagio - Allegro, Tempo I)
Pnina Salzman, Vol. 7: Chamber Music & Solos (Live)
3 Mazurkas, Op. 63: No. 2 in F Minor (Live)
Piano Quintet in E-Flat Major, Op. 16: I. Grave - Allegro ma non troppo (Live)
Clarinet Sonata in E-Flat Major, Wq. 92:1, H. 516 (Live)
3 Mazurkas, Op. 63: No. 3 in C-Sharp Minor (Live)
Piano Quintet in E-Flat Major, Op. 16: II. Andante cantabile (Live)
Clarinet Sonata in E-Flat Major, Wq. 92:2, H. 517 (Live)
5 Mazurkas, Op. 7: No. 3 in F Minor (Live)
Piano Quintet in E-Flat Major, Op. 16: III. Rondo. Allegro ma non troppo (Live)
Clarinet Sonata in E-Flat Major, Wq. 92:3, H. 518 (Live)
4 Mazurkas, Op. 67: No. 1 in G Major (Live)
Piano Trio No. 4 in B-Flat Major, Op. 11 "Gassenhauer": I. Allegro con brio (Live)
Clarinet Sonata in B-Flat Major, Wq. 92:4, H. 519 (Live)
4 Mazurkas, Op. 67: No. 2 in G Minor (Live)
Piano Trio No. 4 in B-Flat Major, Op. 11 "Gassenhauer": II. Adagio (Live)
Trio pathétique in D Minor: I. Allegro moderato (Live)
Piano Sonatine, M. 40: II. Mouvement de menuet (Live)
4 Mazurkas, Op. 67: No. 3 in C Major (Live)
Piano Trio No. 4 in B-Flat Major, Op. 11 "Gassenhauer": III. Thema. Pria ch'io l'impegno - Vars. 1-9 (Live)
Trio pathétique in D Minor: II. Scherzo. Vivacissimo (Live)
Piano Sonatine, M. 40: III. Animé (Live)
4 Mazurkas, Op. 67: No. 4 in A Minor (Live)
Cello Sonata No. 3 in A Major, Op. 69: I. Allegro, ma non tanto (Live)
Trio pathétique in D Minor: III. Largo (Live)
Miroirs, M. 43: No. 4, Alborada del gracioso (Live)
4 Mazurkas, Op. 30: No. 4 in C-Sharp Minor (Live)
Cello Sonata No. 3 in A Major, Op. 69: II. Scherzo. Allegro molto (Live)
Trio pathétique in D Minor: IV. Allegro con spirito (Live)
2 Nocturnes, Op. 48: No. 1 in C Minor (Live)
Cello Sonata No. 3 in A Major, Op. 69: III. Adagio cantabile - Allegro vivace (Live)
Cello Sonata in D Minor, L. 135: I. Prologue (Recorded Live 1993)
24 Préludes, Op. 28: No. 4 in E Minor (Live)
Cello Sonata in D Minor, L. 135: II. Sérénade (Recorded Live 1993)
Barcarolle in F-Sharp Major, Op. 60 (Live)
Cello Sonata in D Minor, L. 135: III. Final (Recorded Live 1993)
3 Waltzes, Op. 34 "Valses brillante": No. 1 in A-Flat Major (Live)
7 Canciones populares españolas (Arr. for Cello & Piano): No. 1, El paño moruno [Live]
Nocturne No. 6 in D-Flat Major, Op. 63 (Live)
7 Canciones populares españolas (Arr. for Cello & Piano): No. 5, Nana [Live]
Clarinet Sonata in E-Flat Major, Op. 120 No. 2: I. Allegro amabile (Live)
7 Canciones populares españolas (Arr. for Cello & Piano): No. 6, Canción [Live]
Clarinet Sonata in E-Flat Major, Op. 120 No. 2: II. Allegro appassionato (Live)
7 Canciones populares españolas (Arr. for Cello & Piano): No. 7, Polo [Live]
Clarinet Sonata in E-Flat Major, Op. 120 No. 2: III. Andante con moto - Allegro (Live)
7 Canciones populares españolas (Arr. for Cello & Piano): No. 3, Asturiana [Live]
7 Canciones populares españolas (Arr. for Cello & Piano): No. 4, Jota [Live]
Symphonie "Mathis der Maler": 1. Engelkonzert
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd043b5f32055053149bac2253df7f2c342fdb9b0c17bb420875e62039c3d4053. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057102131.
Symphonie "Mathis der Maler": 2. Grablegung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45045c8a6eb176f79685c2517f6596ce99d1a436096e90fbf7743fb4ddeaf268. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057102132.
Symphonie "Mathis der Maler": 3. Versuchung des heiligen Antonius
Konzertmusik Für Streichorchester Und Blechbläser, Op. 50: Part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860b9b8c55813818c4dd5e597565f85c92599c438fed412d756d7ee8d6761788. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057102140.
Konzertmusik Für Streichorchester Und Blechbläser, Op. 50: Part 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7145516115dc521cd7bec55b37391cf5497934f07b24964ed9ab92510e038d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057102141.
Der Schwanendreher - Concerto For Viola & Small Orchestra: 1. "Zwischen Berg und tiefem Tal"
Der Schwanendreher - Concerto For Viola & Small Orchestra: 2. "Nun laube, Lindlein laube!"
Der Schwanendreher - Concerto For Viola & Small Orchestra: 3. "Der Gutzgauch auf dem Zaune saß"
Der Schwanendreher - Concerto For Viola & Small Orchestra: 4. Variationen "Seid ihr nicht der Schwanendreher?"
Piano Trio in E-Flat Major, K. 498 "Kegelstatt": I. Andante
Consolations, S. 172 "6 Pensées poétiques": No. 3 in D-Flat Major. Lento placido
Piano Trio in E-Flat Major, K. 498 "Kegelstatt": II. Menuetto
19 Hungarian Rhapsodies, S. 244: No. 12 in C-Sharp Minor
Piano Trio in E-Flat Major, K. 498 "Kegelstatt": III. Rondo. Allegretto
Fantasia on Hungarian Folk Themes, S. 123 "Hungarian Fantasy"
Piano Concerto No. 14 in E-Flat Major, K. 449: I. Allegro vivace
Harmonies poétiques et religieuses, S. 173: VII. Funérailles
Piano Concerto No. 14 in E-Flat Major, K. 449: II. Andantino
6 Preludes & Fugues After J.S. Bach, S. 462: No. 1 in A Minor
Piano Concerto No. 14 in E-Flat Major, K. 449: III. Allegro ma non troppo
Noches en los Jardines de España: I. En el Generalife
Piano Sonata No. 11 in A Major, K. 331: I. Theme & Variations. Andante grazioso
Noches en los Jardines de España: II. Danza lejana
Piano Sonata No. 11 in A Major, K. 331: II. Menuetto
Noches en los Jardines de España: III. En los jardines de la Sierra de Córdoba
Piano Sonata No. 11 in A Major, K. 331: III. Alla turca. Allegretto
Viola da gamba Sonata in G Major, BWV 1027: I. Adagio
Viola da gamba Sonata in G Major, BWV 1027: II. Allegro ma non tanto
Viola da gamba Sonata in G Major, BWV 1027: III. Andante
Viola da gamba Sonata in G Major, BWV 1027: IV. Allegro moderato