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 0x359a8507e8d4ed44e15bf00ee8c3f7f64cfec5764b0d4dd03afdd8eb867f444b. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12a0cb48-7e45-4b4f-9bea-20969a5f4662.json and https://artists.proofprofile.net/proofs/artist/12a0cb48-7e45-4b4f-9bea-20969a5f4662.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ries, F.: Concerto for 2 Horns, Woo 19 / Violin Concerto No. 1 / Overtures To Die Rauberbraut and The Sorceress
5 Minuets, D.89: No. 3 (transcribed for octet)
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 0xb152bd79dee6e98d9185e153e4c8ef53904ae1a38d3390c3011d18d4dc016e6e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM1747070.
Mozart: Oboe Concerto & Other Works with Oboe
Jan Ladislav Dussek: Duos for Harp and Pianoforte
Sonata IV for cembalo obbligato and violin, BWV 1017: I. Largo
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I. Herz Und Mund Und Tat Und Leben Bwv 147, For The Feast Of Visitation,mariae Heimsuchung, Seconda Parte: Choral (Coro), Jesu Bleibet Meine Freude
Holland Boys Choir, Netherlands Bach Collegium
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Bach Edition Vol. 15, Cantatas Vol. VIII Part: 4
Bach Edition Vol. 14, Cantatas Vol. VII Part: 3
Brahms: Horn Trio; Violin Sonata No. 1; Fantasies Op. 116
Horn Trio in E-Flat Major, Op. 40: I. Andante (Poco più animato)
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Horn Trio in E-Flat Major, Op. 40: II. Scherzo (Allegro - Molto meno Allegro)
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Horn Trio in E-Flat Major, Op. 40: III. Adagio mesto
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Horn Trio in E-Flat Major, Op. 40: IV. Finale (Allegro con brio)
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Violin Sonata No. 1 in G Major, Op. 78: I. Vivace ma non troppo
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Punto: Horn Concerto No. 1 in E Major : II. Adagio
I. Wachet Auf, Ruft Uns Die Stimme BWV 140, (1) Coro: Wachet Auf, Ruft Uns Die Stimme
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I. Wachet Auf, Ruft Uns Die Stimme BWV 140, (2) Recitativo (Tenore): Er Kommt, Der Bräutgam Kommt
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I. Wachet Auf, Ruft Uns Die Stimme BWV 140, (3) Aria (Duetto: Soprano, Basso): Wann Kömmst Du, Mein Heil?
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I. Wachet Auf, Ruft Uns Die Stimme BWV 140, (4) Choral (Tenore): Zion Hört Die Wächter Singen
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I. Wachet Auf, Ruft Uns Die Stimme BWV 140, (5) Recitativo (Basso): So Geh Herein Zu Mir
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I. Wachet Auf, Ruft Uns Die Stimme BWV 140, (6) Aria (Duetto: Soprano, Basso): Mein Freund Ist Mein!
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I. Wachet Auf, Ruft Uns Die Stimme BWV 140, (7) Choral (Coro): Gloria Sei Dir Gesungen
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Bach Edition Vol. 19, Cantatas Vol. X Part: 2
II. Lobe Den Herrn, Meine Seele BWV 143, For New Year's Day, Am Neujahrstag: Coro, Lobe Den Herrn, Meine Seele
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Bach Edition Vol. 18, Cantatas Vol. IX Part: 1
II. Wie Schön Leuchtet Der Morgenstern BWV 1, For The Feast Of Annunciation, Zu Mariae Verkündigung: Coro, Wie Schön Leuchtet Der Morgenstern
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Bach Edition Vol. 15, Cantatas Vol. VIII Part: 3
Bach Edition Vol. 15, Cantatas Vol. VIII Part: 5
Bach Edition Vol. 19, Cantatas Vol. X Part: 3
Bach Edition Vol. 15, Cantatas Vol. VIII Part: 1
Bach Edition Vol. 18, Cantatas Vol. IX Part: 4
Dauprat, Gallay, Duvernoy & Rossini: Le cor romantique français
Bach Edition Vol. 18, Cantatas Vol. IX Part: 2
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6850cc86b4517d5dfcd1089c0fdca190721cfcd2c077cc097818f53d6cb4c517. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ140716020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8e21d748b97301b84e50ccff8a7d83cd55423c0ff9d9a11b7166e87062bbe0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ140716030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9757234925cfdfcfaf56bbba1082c382665275c1805707c4e9603122568c9e4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ140716040.
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7 Fantasien, Op. 116: I. Capriccio in D Minor (Presto energico)
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7 Fantasien, Op. 116: II. Intermezzo in A Minor (Andante)
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7 Fantasien, Op. 116: III. Capriccio in G Minor (Allegro passionato)
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7 Fantasien, Op. 116: IV. Intermezzo in E Major (Adagio)
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7 Fantasien, Op. 116: VII. Capriccio in D Minor (Allegro agitato)
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