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 0x5477ae05900746862fd4e8be0985417fd6671e938b8db7291199214f03d6174f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4afdfb90-16cf-40b0-843f-d73670335500.json and https://artists.proofprofile.net/proofs/artist/4afdfb90-16cf-40b0-843f-d73670335500.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 1 in E Major, RV 269, "La primavera" (Spring): I. Allegro
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 0x266340f846980e11c7624aec24b63c6e16c0e88c88afd3ad3f4ea074c4523d04. 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/SEWDL0721501 — a six-check JSON result.
Music for the Royal Fireworks, HWV 351: La réjouissance (with applause)
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Concerto in D Minor for Oboe and Strings, Op. 1: II. Adagio
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Concerto in D Minor for Flute and Orchestra, Wq 22: I. Allegro
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Sonata No. 12 in D Minor, Op. 5, "La Follia": Variations over an old Spanish Sarabande
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee657ebcfb42caf49dab3c089e4cc49a13b812b5232ce47f479acf4c8a36240c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZDG0600154 — a six-check JSON result.
Concerto grosso in F Major, Op. 6,12: I. Preludio
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ca54eb17884839db6d6b93f532b483778dbc3d8ffcbe7f9c9b1b9187143500. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEWDL0759603 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2037d7e48fcd5edade9e7bac982236bba6e096f9d222fdddb62579bc521f9d32. 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/DEB790303443 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675fdbdf6f0d1dd83255d3577d98842194de295afc1551f379e78cae8351272c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEWDL9430583 — a six-check JSON result.
Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 2 in G Minor, RV 315, "L'estate" (Summer): III. Presto: Tempo impetuoso d'Estate
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Solomon, HWV 67: The Arrival of the Queen of Sheba
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Cantata, BWV 147, "Herz und Mund und Tat und Leben": Jesu bleibet meine Freude (Jesu, Joy of Man's Desiring)
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String Quintet No. 5 in E Major, Op. 11: III. Minuet
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Concerto in D Major for Trumpet and Orchestra: III. Allegro moderato
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Trumpet Voluntary in D Major (The Prince of Denmark's March)
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Concerto in D Minor for Guitar and Orchestra, FWV L:d 1: III. Un poco allegro
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Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 3 in F Major, RV 293, "L'autunno" (Autumn): I. Ballo e canto de villanelli: Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64316dc7060c92fb240d1d7997fe9d1b50dd876a6c5717b4fceb1b4d92a68730. 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/SEWDL0711110 — a six-check JSON result.
Concerto a cinque No. 2 in D Minor for Oboe and Strings, Op. 9: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0fd9502f522093df0b2453ab085de8d5720ea2a09677c7069c6146004df880. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/SEWDL0508511 — a six-check JSON result.
Concerto Grosso No. 8 in G Minor, Op. 6, "Christmas Concerto": V. Allegro (attacca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a911d5457d48a4e041e8359b0961ee99a67f3edad3ac2cc0bdd53927ecdf3fe. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/SEWDL9438540 — a six-check JSON result.
Concerto in G Major for Viola and Orchestra, TWV 51:G9: I. Largo
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Concerto grosso in D Major, Op. 6,4: I. Adagio - Allegro
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Concerto in D Major for Trumpet and Organ: I. Pomposo
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Concerto No. 1 in C Major for Recorder and Strings, TWV 51:C1: II. Allegro
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Le quattro stagioni (The Four Seasons), Op. 8 - Concerto No. 4 in F Minor, RV 297, "L'inverno" (Winter): II. Largo
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The 99 Most Essential Handel Masterpieces
The Four Seasons, Violin Concerto No. 1 in E Major, RV 269 "Spring": I. Allegro
Canon and Gigue in D Major, P. 37: I. Canon
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Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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Brandenburg Concerto No. 3 in G Major, BWV 1048: I. Allegro
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The Messiah, HWV 56: No. 44, Hallelujah (Chorus)
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Suite de Symphonies No. 1: Fanfare-Rondeau
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Music for the Funeral of Queen Mary: March (from A Clockwork Orange)
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Christmas Oratorio, BWV 248, Part 1: IX. Chorale: Ach, mein herzliebes Jesulein!
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The 99 Most Essential Baroque Masterpieces
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Concerto in D Major for Trumpet and Orchestra: I. Adagio
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Water Music Suite No. 1 in F Major, HWV 348: II. Adagio e staccato
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Sonata No. 6 in G Major for Cello and Harpsichord: I. Adagio
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Concerto No. 1 in C Minor for Two Keyboards and Orchestra, BWV 1060: II. Adagio
Württemberg Chamber Orchestra Of Heilbronn
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Concerto in A Minor for Recorder, Two Violins and Continuo: Adagio
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Clarke - Bach - Handel - Homilius - Krebs - Lubeck - Telemann - Torelli: Music for Organ & Trumpet
Handel: Music for the Royal Fireworks, HWV 351, Water Music Suite No. 1, HWV 348, Suite, HWV 341 & Oboe Concerto, HWV 301
Brass Quintet No. 1, Op. 5: III. Allegro moderato
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The Messiah, HWV 56, Pt. 3: No. 51, But Thanks Be to God
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Oboe Concerto No. 3 in G Minor, HWV 287: II. Allegro
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Clarke: Trumpet Voluntary & Other Baroque Trumpet Favorites
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A Classical Christmas - 50 Christmas Favorites
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Bach - Mendelssohn - Widor - Franck: Great Organ Works
classical music feel good 100 uplifting classics
The 99 Most Essential New Year's Classics