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 0xde044010a8e0cad53625e04c4c68b425ec6d93f038b4e3d24dd920e8f6dc074b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d893a006-e1b6-40ec-b393-f0c5de7c0c06.json and https://artists.proofprofile.net/proofs/artist/d893a006-e1b6-40ec-b393-f0c5de7c0c06.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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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Concerto for Oboe & Strings in D Minor: II. Adagio (From "Lorenzo's Oil")
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Bach: The Complete Brandenburg Concertos
Brandenburg Concerto No. 1 in F Major, BWV 1046: I. (Allegro)
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Brandenburg Concerto No. 1 in F Major, BWV 1046: II. Adagio
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Brandenburg Concerto No. 1 in F Major, BWV 1046: III. Allegro
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Brandenburg Concerto No. 1 in F Major, BWV 1046: IV. Menuetto - Trio - Polonaise - Trio
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Brandenburg Concerto No. 2 in F Major, BWV 1047: I. (Allegro)
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Brandenburg Concerto No. 2 in F Major, BWV 1047: II. Andante
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Brandenburg Concerto No. 2 in F Major, BWV 1047: III. Allegro assai
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Brandenburg Concerto No. 3 in G Major, BWV 1048: I. (Allegro)
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Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
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Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro
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Brandenburg Concerto No. 4 in G Major, BWV 1049: II. Andante
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Brandenburg Concerto No. 4 in G Major, BWV 1049: III. Presto
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Brandenburg Concerto No. 5 in D Major, BWV 1050: I. Allegro
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Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affettuoso
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Brandenburg Concerto No. 5 in D Major, BWV 1050: III. Allegro
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Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: I. (Allegro)
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Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: II. Adagio ma non tanto
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Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: III. Allegro
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Bach: Brandenburg Concertos Nos. 4, 5 & 6
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Concerto grosso in E Minor, Op. 6 No. 3, HWV 321: IV. Polonaise. Andante
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Concerto grosso in D Major, Op. 6 No. 5, HWV 323: V. Allegro
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Water Music, Suite No. 3 in G Major, HWV 350: I. Sarabande
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Orchestral Suite No. 1 in C Major, BWV 1066: V. Menuets I & II
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Harpsichord Concerto No. 5 in F Minor, BWV 1056: II. Largo (Arr. for Guitar)
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The Well-Tempered Clavier, Book 1: Prelude No. 1 in C Major, BWV 846
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Music for the Royal Fireworks, HWV 351: III. La paix
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Chorale Prelude in E-Flat Major, BWV 645 "Wachet auf, ruft uns die Stimme"
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Suite No. 3 in D Major, BWV 1068: II. Air
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Guitar Concerto in D Major, RV 93: II. Largo (From "The Cowboys")
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Concerto grosso in F Major, Op. 6 No. 2, HWV 320: I. Andante larghetto
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Jesu, Joy Of Man’s Desiring (From Cantata No. 147)
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Handel Bars: Popular Works of George Frideric Handel
Cello Alchemy: Music from Russia & Eastern Europe
Ultimate Classical Masterpieces: Winter Edition Vol. 2
a calm playlist for reading, studying or writing
Nocturne No. 1 in E-Flat Major. Molto moderato
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2 Arabesques, L. 66: No. 1, Andante con moto (Transcr. Y. Kondonassis)
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Symphony No. 17 in G Major, K. 129: II. Andante
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2 Piano Pieces, Op. 157: No. 2, La fileuse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbc620fa6190c888993f41d862950cb84fd54f32666c5756c37675aad04a3fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USTE10302313 — a six-check JSON result.
Nocturne No. 9 in E-Flat Major. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1d134c9ca5579f3bf610f2aad5ced50a65f5098a531d516ce6bd115db493ba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USTE10307199 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d6944a7468f031387800bb3b7ebe18a25c4f30a8316ea87b8196b3617e5048. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USTE10460406 — a six-check JSON result.
3 Mélodies, Op. 7: No. 1, Après un rêve (Arr. Y. Kondonassis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4db9253ff0788dda910b876576ce792b2c438be5a90ebebbf24057930464f6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USTE10602590 — a six-check JSON result.
Nocturne No. 15 in C Major. Molto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bfac04ac9737ef71b82fd7b1d0541be8bc503d6607283aaae76d986c6ce4a9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USTE10313199 — a six-check JSON result.