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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf980d49ea5f6cf443f984486c28c48b34d8ea58aa7740d7ab558de80ef7241c. 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/2905e471-ed78-446c-88a4-a8b15ab53cbf.json and https://artists.proofprofile.net/proofs/artist/2905e471-ed78-446c-88a4-a8b15ab53cbf.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mozart: Piano Concertos Nos. 15 & 17 (Remastered)
Piano Concerto No. 15 in B-Flat Major, K. 450: I. Allegro
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f693d6c88be9b6b1228c5d74c3532c7cff06f2da4fa4ddf397186a7f6afb72. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11703704 — a six-check JSON result.
Piano Concerto No. 15 in B-Flat Major, K. 450: II. Andante
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Piano Concerto No. 15 in B-Flat Major, K. 450: III. Allegro
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Piano Concerto No. 17 in G Major, K. 453: I. Allegro
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Piano Concerto No. 17 in G Major, K. 453: II. Andante
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Piano Concerto No. 17 in G Major, K. 453: III. Allegro
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Mozart: Piano Concertos No. 20 in D Minor, K. 466 & No. 27 in B-Flat Major, K. 595 (Live)
Strauss: Don Quixote, Op. 35 - Lalo: Cello Concerto - Saint-Saëns: Cello Concerto No. 1, Op. 33
Strauss, R: Don Quixote, Op. 35: Theme. The Knight of the Mournful Countenance - Sancho Panza
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Strauss, R: Don Quixote, Op. 35: Variation I. The Adventure with the Windmills
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Strauss, R: Don Quixote, Op. 35: Variation V. The Knight’s Vigil
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Strauss, R: Don Quixote, Op. 35: Finale. Don Quixote’s Death
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Lalo: Cello Concerto in D Minor: I. Prélude. Lento - Allegro maestoso (Live)
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Saint-Saëns: Cello Concerto No. 1 in A Minor, Op. 33: I. Allegro non troppo (Live)
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Saint-Saëns: Cello Concerto No. 1 in A Minor, Op. 33: II. Allegretto con moto (Live)
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Stravinsky: Petrouchka; Le Sacre du Printemps
Berlioz: Roméo & Juliette; Harold in Italy
Mozart: Clarinet Concerto in A Major, K. 622 - Strauss: Horn Concerto No. 1, Op. 11
Clarinet Concerto in A Major, K. 622: I. Allegro
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Clarinet Concerto in A Major, K. 622: II. Adagio
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Clarinet Concerto in A Major, K. 622: III. Rondo. Allegro
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Horn Concerto No. 1, Op. 11: II. Andante
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Horn Concerto No. 1, Op. 11: III. Allegro
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Everybody's Beethoven: Symphonies Nos. 4, 8 & 9
Walker: Antifonys, Lilacs, Sinfonias Nos 4 & 5
Weber, Barber & Beethoven: Orchestral Works (Remastered 2023) [Live]
Slavonic Dances, Op. 72, B. 147: No. 2, Dumka
Mozart in the Jungle, Season 3 (An Amazon Original Series Soundtrack)
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Polovetsian Dances from Prince Igor: Introduzione
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Rapsodie espagnole, M. 54: I. Prélude à la nuit
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Dance of the Knights (The Apprentice Theme - UK)
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The Great Cello Concertos: Dvořák, Schumann, Saint-Saëns, Elgar, Haydn...
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Lalo: Cello Concerto in D Minor: II. Intermezzo. Andantino con moto (Live)
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Lalo: Cello Concerto in D Minor: III. Introduction. Andante - Allegro vivace (Live)
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Piano Concerto No. 27 in B-Flat Major, K. 595: II. Larghetto - Live at Severance Hall, Cleveland, 2010
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I vespri siciliani / Act 3: Le quattro stagioni: 2. La primavera
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Clarinet Concerto in A Major, K. 622: II. Adagio - From "Out Of Africa"
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Piano Concerto No. 5 in E flat major Op. 73 -"Emperor": 2. Adagio un poco mosso
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