Sandro Ivo Bartoli (born 10 February 1970 in Pisa) is an Italian pianist. Early career From the early 1990s, Bartoli has rediscovered, played and recorded Italian classical music from the early twen
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 0x746cb962b5f504718fb9c1d89c39b769f83f2c9b9a39e2dd2143784300ddd43b. Chain 2 (Bitcoin): anchored in block 953980 (2026-06-16T17:16:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cad0c3c-4ca9-4f7e-9220-bda5981e8c14.json and https://artists.proofprofile.net/proofs/artist/2cad0c3c-4ca9-4f7e-9220-bda5981e8c14.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
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
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Partita No. 2 in D Minor, BWV 1004: V. Ciaccona
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Partita in G Minor, BWV 1004: V. Ciaccona
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Chaconne in D Minor, BWV 1004 (Andante maestoso, ma non troppo lento)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4269e2e5b883743709e2adbac2584f7cf54c323fd166cc0ce8fef774b719982. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLY331604552 — a six-check JSON result.
Partita in D Minor, BWV 1004: V. Ciaccona
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20th Century Italian Piano Music, Vol. 1
Giacomo Puccini: Complete Piano Works and Selected Opera Transcriptions
Johann Sebastian Bach: Preludes, Fantasias and Minuets
Bach: Busoni Transcriptions After J.S. Bach
Prelude and Fugue in D Major, BWV 532: I. Prelude. Moderato
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Prelude and Fugue in D Major, BWV 532: II. Fugue. Allegro moderato
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Prelude and Fugue in E-Flat Major, BWV 552: I. Prelude. Moderato maestoso
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Prelude and Fugue in E-Flat Major, BWV 552: II. Fugue. Sostenuto e tranquillo
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Toccata, Adagio and Fugue in C Major, BWV 564: I. Prelude. Tempo moderato, quasi improvisando
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Toccata, Adagio and Fugue in C Major, BWV 564: II. Intermezzo. Adagio
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Toccata, Adagio and Fugue in C Major, BWV 564: III. Fugue. Moderatamente Scherzando, un poco umoristico
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Toccata and Fugue in D Minor, BWV 565: I. Toccata. Adagio – Prestissimo
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Toccata and Fugue in D Minor, BWV 565: II. Fugue. Allegro sostenuto
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Prelude. Komm, Gott Schöpfer, heiliger Geist, BWV 667 (Vivace maestoso)
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Prelude. Wachet auf, ruft uns die Stimme, BWV 645 (Allegretto tranquillo, con semplicità devota)
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Prelude. Nun komm' der Heiden Heiland, BWV 659 (Adagio)
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Prelude. Nun freut euch, lieben Christen gmein, BWV 734a (Allegro)
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Prelude. Ich ruf' zu dir, Herr Jesu Christ, BWV 639 (Andante)
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Prelude. Herr Gott, nun schleuß den Himmel auf, BWV 617 (Un poco agitato)
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Prelude. Durch Adams Fall ist ganz verderbt, BWV 637 (Andante mesto)
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Prelude. Durch Adams Fall ist ganz verderbt, BWV 705 (Molto sostenuto)
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Prelude. In dir ist Freude, BWV 615 (Allegro marcato)
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Prelude. Jesus Christus, unser Heiland, BWV 665 (Andante non troppo)
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Prelude and Fugue in E Minor, BWV 533: I. Prelude. Moderato deciso
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Prelude and Fugue in E Minor, BWV 533: II. Fugue. Andante tranquillo
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Mood Indigo: Symphonic Music of Erik Lotichius