1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x6530838ca6b19e5f1987ff709b277db1c7f09068f5b734a1c6995a1cd37e9d65. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8196d29a-a777-4cf6-af4f-1358cc29a3a8.json and https://artists.proofprofile.net/proofs/artist/8196d29a-a777-4cf6-af4f-1358cc29a3a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach, Mozart, Brahms, Grieg, Ravel, Satie, Debussy & Sibelius: Unfold your Mind
Nabucco, Act 3: Va, pensiero, sull'ali dorate
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xb685f736b5e571c2028bb281404e4c6a3b2e7c8ce5cfbe0d0b1700e5331d8d46. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DES380001838.
Saint-Saens, C.: Oratorio De Noel / Mendelssohn, F.: Vom Himmel Hoch
Wolfgang Amadeus Mozart.: Bassoon Concerto / Concerto for Flute and Harp (Klier, Walter, Zoff, Dresden Staatskapelle, Kurz, Suitner)
Harp Concerto in C Major: III. Rondo. Allegro agitato
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Ibert, Martin, Jolivet & Debussy: Virtuoso Flute Music
Mozart: Piano Concertos Nos. 20-27 - Violin Concertos Nos. 1-5 - Concertos KV 313, 315, 299 & Concertos for Wind Instruments KV 622, 191 & 314- Wind Concertos
Piano Concerto No. 22 in E-Flat Major, K. 482: I. Allegro
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Piano Concerto No. 20 in D Minor, K. 466: II. Romance - cadenza by L. v. Beethoven
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Piano Concerto No. 22 in E-Flat Major, K. 482: III. Allegro
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Piano Concerto No. 24 in C Minor, K. 491: III. Allegretto
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Concerto for Flute and Harp in C Major, KV. 299: II. Andantino
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10 Pieces, Op. 12: No. 7, Prelude in C Major
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Violin Concerto in D Major, Op. 9: II. Andantino
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Variations Op. 36: Je suis encore dans mon printemps
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Harp Concerto in C Major: III. Rondo: Allegro agitato
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The Mother, Op. 41, FS 94: The Fog is Lifting
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Sonata for Flute, Viola and Harp: III. Finale: Allegro moderato ma risoluto
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Harp Concerto in B-Flat Major, HWV 294: I. Andante - allegro
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Harp Concerto in B-Flat Major, HWV 294: II. Larghetto
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Concerto for Flute and Harp in C Major, K. 299: I. Allegro
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Concerto for Flute and Harp in C Major, K. 299: III. Rondo. Allegro
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Harp Concerto in C in Major: II. Andante lento -
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Südwestdeutsches Kammerorchester Pforzheim
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Harp Concerto in A Major: III. Rondo. Allegretto
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Peaceful Inspirations - Unfold your Mind (In Harmony with Classical Music)
Debussy: Violin Sonata / Cello Sonata / Syrinx / Sonata for Flute, Viola and Harp
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Mozart: Sinfonia concertante in E-Flat Major / Flute and Harp Concerto in C Major
Handel, Dittersdorf & Françaix: Harp Concertos
W. A. Mozart & L. Mozart: Toy Symphony, a Musical Joke
Cassation in G Major 'Toy Symphony': III. Finale. Allegro
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Leopold Mozart: Kindersinfonie / Die Bauernhochzeit / Die musikalische Schlittenfahrt
Toy Symphony in C Major: III. Finale: Allegro
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Divertimento in D Major "Peasant Wedding": I. Marcia villanesca
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Divertimento in D Major "Peasant Wedding": III. Andante
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Divertimento in F Major "Musical Sleigh-Ride": No. 3: The Sleigh-Ride - Allegretto - Die Schlittenfahrt
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Divertimento in F Major "Musical Sleigh-Ride": No. 5: Procession March - Marsch - Aufzug: Marsch
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Divertimento in F Major "Musical Sleigh-Ride": No. 8: The Sleigh-Ride - Allegretto - Die Schlittenfahrt
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Divertimento in F Major "Musical Sleigh-Ride": No. 12: The Sleigh-Ride - Allegretto - Die Schlittenfahrt
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Sensitive Sounds - Steps in Silence (In Harmony with Classical Music)
4 Elements - Classical Music of Fire, Water, Air and Earth
Classical Music for Children, Vol. 3 - Kinderklassik
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Silent Night: 99 Must-Have Peaceful Christmas Classics
Christmas Around the World: 50 Must-Have Christmas Classics
Beethoven, Rimski-Korsakow, Mozart, Mahler, Debussy, Liszt & Schumann: LUFT
Steps in Silence (In Harmony with Classical Music)
100 Must-Have Christmas Carols and Chants
50 Must-Have Boys' Choir Christmas Classics
Lay Down and Listen - Sounds for the Soul (In Harmony with Classical Music)
Lay down and listen (In Harmony with Classical Music)