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 0x9e5a8594e6b79158ac2f2890387d0b9d4413dc2e9dd581236915533acd5c61f4. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daea9c7d-de9d-410a-a746-b7307f13db99.json and https://artists.proofprofile.net/proofs/artist/daea9c7d-de9d-410a-a746-b7307f13db99.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Duos for 2 Cellos, Op. 49 No. 1: II. Andante
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 0x738cc089090bb7d0b663da2df93b30da03eeab594848b149254e39bfa89257eb. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLY332200420 — a six-check JSON result.
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Sammartini: Trio I, III, IV, V & Sonata III
Cello Sonata in G Major: I. Allegro non troppo
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Piatti: Music for Cello and Piano, 2 Songs
3 Ritornelli, M.S.113: I. Allegro in A Major
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3 Ritornelli, M.S.113: II. Allegro in C Minor
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3 Ritornelli, M.S.113: III. Allegro assai in C Major
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Piatti: Capricci, Op. 22 & Op. 25 per Violoncello solo - Dallapiccola: Ciaccona, Intermezzo & Adagio
Bossi: Opera completa per violoncello e pianoforte - Opera completa per violino e pianoforte, Vol. 1
Duos for Two Cellos, Op. 49 No. 1 in C Major: I. Allegro moderato
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Duos for Two Cellos, Op. 49 No. 1 in C Major: II. Andante
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Duos for Two Cellos, Op. 49 No. 1 in C Major: III. Rondo. Allegretto
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Duos for Two Cellos, Op. 49 No. 2 in G Major: I. Allegro
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Duos for Two Cellos, Op. 49 No. 2 in G Major: II. Rondo. Allegretto
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Duos for Two Cellos, Op. 49 No. 3 in A Minor: I. Allegro moderato
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Duos for Two Cellos, Op. 49 No. 3 in A Minor: II. Adagio
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Duos for Two Cellos, Op. 49 No. 3 in A Minor: III. Allegretto
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Duos for Two Cellos, Op. 49 No. 4 in G Major: I. Allegro
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Duos for Two Cellos, Op. 49 No. 4 in G Major: II. Rondo. Allegretto
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Duos for Two Cellos, Op. 49 No. 5 in F Major: I. Allegro non troppo
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Duos for Two Cellos, Op. 49 No. 5 in F Major: II. Adagio –
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Duos for Two Cellos, Op. 49 No. 5 in F Major: III. Tempo di menuetto
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Duos for Two Cellos, Op. 49 No. 6 in D Major: I. Allegro maestoso
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Duos for Two Cellos, Op. 49 No. 6 in D Major: II. Andantino
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Duos for Two Cellos, Op. 49 No. 6 in D Major: III. Rondo. Allegro
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Duos for Two Cellos, Op. 51 No. 1 in A Major: I. Allegro
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Duos for Two Cellos, Op. 51 No. 1 in A Major: II. Andante
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Duos for Two Cellos, Op. 51 No. 1 in A Major: III. Allegretto
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Schumann, C.: Piano Concerto in A Minor / Piano Trio in G Minor
Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
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Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
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Piano Trio in G Minor, Op. 17: III. Andante
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Preludes, Book 1: No. 8. La fille aux cheveux de lin (The Girl with the Flaxen Hair) (arr. L.R. Feuillard for cello and piano)
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Cello Concerto in B Minor, Op. 104, B. 191: II. Adagio ma non troppo
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Cello Sonata in G Minor, Op. 65: III. Largo
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Martucci, G.: Orchestral Music (Complete), Vol. 1 - Symphony No. 1 / Nocturne / Andante / Canzonetta / Giga
The 19th Century Salon Music (World Premiere Recordings)
Paganini: Trios for Strings and Guitar (Complete)
Casella: Notte di maggio - Cello Concerto - Scarlattiana