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 0xd85aa3bb21826d9fdb9732f005d18e0656ec52d7b3b10d5fe7890d8c589f5e36. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa9ecec8-9310-4117-99e6-68ca886805fc.json and https://artists.proofprofile.net/proofs/artist/fa9ecec8-9310-4117-99e6-68ca886805fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Italian And English Music for Recorder And Lute
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 0xd297a674c29b6ba3492a08b09697f126b3db398530ed8e980f61d79537b4a676. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SEAEC8666010.
Sinfonia No. 4, Op. 1: Sinfonia, Op. 1 No. 4
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Pehrsson, Clas: Music for Recorder Ensemble
Telemann: Complete Double Concertos With Recorder
Concerto for Recorder and Bassoon in F Major, TWV 52:F1: I. Largo
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Concerto for Recorder and Bassoon in F Major, TWV 52:F1: II. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1205f8776a5ad09cea70e6a0c0fa4ba585d95c6978c5412803d820ba5c8fcc65. 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/SEAEG8417020.
Concerto for Recorder and Bassoon in F Major, TWV 52:F1: III. (Grave)
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Concerto for Recorder and Flute in E Minor, TWV 52:E1: III. Largo
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Concerto for Recorder and Flute in E Minor, TWV 52:E1: IV. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee64ad6d10d83f8e096f5d7e2e46c85d3d0e0e749ef94dc91b3959c22920295. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SEAEG8317200.
Baroque Concertos for Flute And Recorder
The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": II. Largo e pianissimo sempre
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The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f17216ce06a212369337d68618719d1ddf344b8dda3aa52ec808a9765ad284. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/SEAEC8575030.
The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": I. Allegro non molto
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The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff6b33ad8f11c23a8257bd66b281cfd17b2f8bc7a6f4a76b910dfce47e24a33. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SEAEC8575050.
The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": II. Adagio
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The Four Seasons, Violin Concerto in F Major, Op. 8 No. 3, RV 293 "Autumn": III. La Caccia
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The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": I. Allegro non molto
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The Four Seasons, Violin Concerto in F Minor, Op. 8 No. 4, RV 297 "Winter": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a7fb76bc217a1a99b5268d581998c8e6fb287315f0866eb191c2ab8b6280d8. 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/SEAEC8575120.
Concerto for Viola d'amore and Lute in D Minor, RV 540: I. Allegro (moderato)
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Concerto for Viola d'amore and Lute in D Minor, RV 540: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c49fcaf8f913951898f3e92b85ff7f845b062a613b74d511a4f8da022e9ce5. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEAEC8590110.
Concerto for Viola d'amore and Lute in D Minor, RV 540: III. Allegro
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Telemann / Quantz / Vivaldi / Bach, C.P.E.: Chamber Music for Recorder
Sonata in C Minor, TWV 42:C7: I. Adagio (Arr. For recorder, violin and basso continuo)
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Sonata in C Minor, TWV 42:C7: II. Allegro (Arr. For recorder, violin and basso continuo)
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Sonata in C Minor, TWV 42:C7: III. Adagio (Arr. For recorder, violin and basso continuo)
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Sonata in C Minor, TWV 42:C7: IV. Allegro (Arr. For recorder, violin and basso continuo)
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Trio Sonata in C Major: I. Allegro (con brio)
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Chamber Concerto in G Minor, RV 103: I. Allegro ma cantabile (Arr. For recorder, violin and basso continuo)
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Trio in F Major, Wq. 163, H. 588: I. Un poco andante
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Trio in F Major, Wq. 163, H. 588: II. Allegretto
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Concerto for 2 Recorders in B-Flat Major, TWV 52:B1: II. Vivace
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Concerto for 2 Recorders in B-Flat Major, TWV 52:B1: III. Tendrement
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Linde: Amarilli, Mia Belli / Kukuck: Die Brucke
Telemann / Fontana / Castello: Recorder Chamber Music
Telemann: Complete Recorder Music, Vol. 3
Telemann: Complete Recorder Music, The Duets, Vol. Ii
Telemann: Complete Recorder Music - The Duets, Vol. I
Vivaldi / Sammartini / Telemann: Music for Recorder
Telemann / Vivaldi: Concertos for Recorder and Bassoon
Bahr, Gunilla Von: Solflojt 2/3 (Sun-Flute 2/3)
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Hvoslef: Mi-Fi-Li Symphonic Poem / Kvartoni / Double Concerto / Sextet