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 0x9ed841fdd0cd133089a10b8bb84150af485750d26518ed021e099e1ccd1b80f8. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f9f4d86-8428-4b79-ad3c-bfcf827e5035.json and https://artists.proofprofile.net/proofs/artist/0f9f4d86-8428-4b79-ad3c-bfcf827e5035.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Das italienische Settecento: Serie B. Der neapolitanische Stilkreis & Serie D. Solo- und Triosonate (Mono Version)
A. Scarlatti: Su le sponde del Tebro - Ariosti: Lezione V - Arcangelo Corelli: Sonata 'La Follia'
The Four Seasons, Violin Concerto in E Major, RV 269 "Spring"
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 0x7854cd8c9d4d813bc8601192c694e3aca0550effa7d2e1b6cd96e97b1494a35d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USZDG0602754.
The Four Seasons, Violin Concerto in G Minor, RV 315 "Summer"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733a52f9defe975ff33fc76869073d6dfdf4623d986155db7b189b06a6982943. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USZDG0602764.
The Four Seasons, Violin Concerto in F Major, RV 293 "Autumn"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d43389a99453670b17ba983d834fd5c58c778e1a996f79bd92dbccda8e07442. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USZDG0602766.
The Four Seasons, Violin Concerto in F Minor, RV 297 "Winter"
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Concerto for 2 Cellos in G Minor, RV 531
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Transcribed in the Light of Harpsichord Technique (Bach's "Chromatic Fantasy & Fugue"), for piano: i. Chromatic Fantasia (BWV903)
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Transcribed in the Light of Harpsichord Technique (Bach's "Chromatic Fantasy & Fugue"), for piano: ii. Fugue (BWV948)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9e98e7384fb894665b25b60d5cca4520c3dd30bf1af30dd8b24a8397bde0a8. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USKO11300831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ad65b93b0757370a2a7045956ad5c2416445c29221444ae6b8afe8ab3fa028. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USKO11300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac8bced3a442008d8ae36594355b1af7c26e40c1d8fdefa4af1a9587cae43b0. 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/USKO11300833.
Capriccio on the Departing of his Most Beloved Brother in B-flat Major, BWV992: i. Arioso (Adagio): Ist eine Schmeichelung der Freunde, um denselben von seiner Reise abzuhalten (His friends t
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Capriccio on the Departing of his Most Beloved Brother in B-flat Major, BWV992: ii. Andante: Ist eine Vorstellung unterschiedlicher Casuum, die ihm in der Fremde konnten vorfallen (They tell
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Capriccio on the Departing of his Most Beloved Brother in B-flat Major, BWV992: iii. Adagiosissimo: Ist ein allgemeines Lamento der Freunde (The general lament of his friends)
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Capriccio on the Departing of his Most Beloved Brother in B-flat Major, BWV992: v. Allegro poco: Aria di Postiglione
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Sonatina, from Cantata No. 106 "Gottes Zeit ist die allerbeste Zeit (Trinity), BWV106," arr. Friskin
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd40c96eda185def00b1927925ddeba73798d18b20e27c57da4e02c5edd2c3c. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USKO11300841.
French Suite No. 3 in B Minor BWV814: i. Allemande
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French Suite No. 3 in B Minor BWV814: ii. Courante
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French Suite No. 3 in B Minor BWV814: iii. Sarabande
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Concerto grosso in D Major, Op. 6, No. 4: I. Adagio - Allegro
Südwestdeutsches Kammerorchester Pforzheim
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Concerto in G Major, RV 151 "Alla Rustica": I. Presto
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Vanhal: Bassoon Concerto in C Major: II. Adagio (Andante molto)
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Orchestral Masterworks of Johann Sebastian Bach (Remastering 2012)
Haydn: Trumpet Concerto in E Flat Major / Mozart: Serenade No. 9
Haydn: Concerto pour trompette & Concerto pour cor No. 1 (Mono Version)
Concerto in D Major for Guitar, Strings, and Continuo, RV93: i. Allegro giusto
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Concerto in D Major for Guitar, Strings, and Continuo, RV93: iii. Allegro
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Concerto for Viola d'Amore and Lute in D Minor, RV540: i. Allegro
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Concerto for Viola d'Amore and Lute in D Minor, RV540: ii. Largo
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Concerto for Viola d'Amore and Lute in D Minor, RV540: iii. Allegro
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La Cetra: Concerto No. 1 in C major, RV 181a: i. Allegro
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La Cetra: Concerto No. 2 in A Major, RV345: i. Allegro
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La Cetra: Concerto No. 4 in E Major, RV263a: iii. Allegro non molto
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La Cetra: Concerto No. 5 in A Minor, RV358: i. Adagio - Presto
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Piccolo Concerto in C Major, RV443: ii. Largo
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Franz Schubert: Ellens Gesang III ('Ave Maria'), D.839, Op.52, No. 6
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The Four Seasons, Violin Concerto in G Minor, RV 315 "Summer": III. Presto. Tempo impettuoso d'Estate (From "Portrait of a Lady on Fire")
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Antonio Vivaldi: Essential Wind and Brass Concertos
I Like the Trumpet! (Menuetto Kids - Classical Music for Children)
Bach: Cantates, BWV 51 & 209 (Mono Version)
Ich mag Trompete! (Menuetto Kids - Klassik für Kinder)
Bach: Ein feste Burg ist unser Gott, BWV 80 (Mono Version)