thumb|Presumed portrait of Blavet by Michel Blavet (March 13, 1700 – October 28, 1768) was a French composer and flute virtuoso. Although Blavet taught himself to play almost every instrument, he spe
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 0x97dfe27c08337f32f0a25ded27be0113450b0bce5faf3ddd4c13f28b4fd41e52. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a34645e8-d1e4-400f-8f7d-4ca4b32eed73.json and https://artists.proofprofile.net/proofs/artist/a34645e8-d1e4-400f-8f7d-4ca4b32eed73.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Michel Blavet: 6 Sonatas pour flûte et continuo Op.2 Claudio Ferrarini flûte - Accademia Farnese
6 Sonates meleese de pieces, Op. 2: I. Sonata in G Major, "L’Henriette": I. Adagio
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 0x70a78afc4914e8bd022e6a2d178fdfc3d8908faabb5c3683b52f2ee5adaa5fe4. 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/ITZ391271678 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: I. Sonata in G Major, "L’Henriette": II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3dc4260aaac156534512884b9526ae68fc605ee5c35c1fce0878f3dab183b6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITZ391271679 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: I. Sonata in G Major, "L’Henriette": III. Première aria Rondeau – Seconde aria – Première aria da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839e92eaf1ff228756e7d4e0b67e0203eddd48a7b9379de2a34e7143b1a38d09. 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/ITZ391271680 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: II. Sonata in D Minor, “La Vibray”: I. Andante
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6 Sonates meleese de pieces, Op. 2: II. Sonata in D Minor, “La Vibray”: II. Allemanda. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ada8fb7384c97563e7d82c43e6bf92ae2cf7fc490ca0b766d4c4e33456f1f7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITZ391271683 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: III. Sonata in E Minor, "La Dherouville”: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6048c21a20f98f39e203c4fc7d3847a927717316a782cea66edfd5d47b644c5a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ITZ391271687 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: III. Sonata in E Minor, "La Dherouville”: II. Allemanda. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2867d041436f3c267b2f4bfe30aac302c7c756230b3e4d41f8bceb1becca890. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITZ391271688 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: III. Sonata in E Minor, "La Dherouville”: IV. Tambourins I and II, "Le Mondorge". Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbbc5f6b55233d20ac125b6e588530f08605db0e95a6751ce180b89f6e4c39f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITZ391271690 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: III. Sonata in E Minor, "La Dherouville”: V. Giga. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9590f836d42d14905321b5e9319cb6e8348dde3449f5ecd4538ca7935f3531a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ITZ391271691 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: IV. Sonata in G minor "La Lumagne”: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb24d9d1f2238ba39dd176887885d075353588a5356d6e8ac1e4bbf291db11f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITZ391271692 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: IV. Sonata in G minor "La Lumagne”: IV. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e72621e587564b628fd9bffe9f1732f2de846374e119fb76a858e7199ad180. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITZ391271695 — a six-check JSON result.
6 Sonates meleese de pieces, Op. 2: V. Sonata in D major "La Chauvet”: VI. Gavotta "La Dedale"
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6 Sonates meleese de pieces, Op. 2: VI. Sonata in A minor "La Boucot”: II. Allemanda. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3707abcb74b8e1db7824736ac1a71261e18942e00351aa6ced54daa255aaa6cc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITZ391271704 — a six-check JSON result.
6 Flute Sonatas, Op. 2, Sonata No. 1: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3728218eee0a14a87f22c2fd51801087324de93e622f3d5a56fca0d591e6c99. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580567407 — a six-check JSON result.
6 Flute Sonatas, Op. 2, Sonata No. 1: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84d732d8a9d6f213ce60b7fec59eea49dae041db4ea2707f6ae41cf0d38bfc5. 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/NLN580567408 — a six-check JSON result.
6 Flute Sonatas, Op. 2, Sonata No. 1: III. Aria 1a - Rondeau - L'Henriette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec73c7141dc3770146129b18656b1e41a3d67e01f621b088d647cbcddc70b414. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLN580567409 — a six-check JSON result.
6 Flute Sonatas, Op. 2, Sonata No. 1: IV. Aria 2a
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6 Flute Sonatas, Op. 2, Sonata No. 1: V. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405f0ceb0f09b337ed24ed390302d327d92b2fb9c44a0a2d4a758769abb5198f. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/NLN580567411 — a six-check JSON result.
6 Flute Sonatas, Op. 2, Sonata No. 2: I. Andante "La Vibray"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0944596f6b7384f1e76c364d3205898e788e60796674914b29c4070b28c3f7. 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/NLN580567412 — a six-check JSON result.
6 Flute Sonatas, Op. 2, Sonata No. 2: II. Allemanda - Allegro
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6 Flute Sonatas, Op. 2, Sonata No. 2: III. Gavotta - Moderato - Les Caquets
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6 Flute Sonatas, Op. 2, Sonata No. 2: IV. Sarabanda - Largo
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6 Flute Sonatas, Op. 2, Sonata No. 2: V. Allegro
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6 Flute Sonatas, Op. 2, Sonata No. 3: I. La Dhérouville - Adagio
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6 Flute Sonatas, Op. 2, Sonata No. 3: II. Allemanda - Andante
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6 Flute Sonatas, Op. 2, Sonata No. 3: IV. 1r & 2e Tambourin Presto - Le Mondorge
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6 Flute Sonatas, Op. 2, Sonata No. 3: V. Giga - Allegro
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6 Flute Sonatas, Op. 2, Sonata No. 4: I. Adagio - La Lumague
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6 Flute Sonatas, Op. 2, Sonata No. 4: II. Allemanda - Allegro
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6 Flute Sonatas, Op. 2, Sonata No. 4: III. Ciciliana
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6 Flute Sonatas, Op. 2, Sonata No. 4: IV. Presto
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6 Flute Sonatas, Op. 2, Sonata No. 4: V. Allegro - Le Lutin
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6 Flute Sonatas, Op. 2, Sonata No. 5: II. Allegro
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6 Flute Sonatas, Op. 2, Sonata No. 6: I. Adagio "La Boucot"
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6 Flute Sonatas, Op. 3, Sonata No. 2: III. Minoetto. Variatione Ia, Variatione IIa
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6 Sonates mêlées de pièces, Op. 2: Sonate No. 1 en sol majeur: I. Adagio
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6 Sonates mêlées de pièces, Op. 2: Sonate No. 1 en sol majeur: IV. Presto
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Blavet: Le jaloux corrigé (Mono Version)
II. Première Gavotte - Deuxième Gavotte (Arr. for flugelhorn and orchestra by Soma Dinyés)
Concerto à 4 parties in A minor: 1. Allegro
Pergolesi / Vivaldi / Woodcock / Blavet / Leclair: Flute Concertos
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Concerto à 4 parties in A minor: 2. Gavotte I and Gavotte II:Tendrement
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Concerto à 4 parties in A minor: 3. Allegro
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Blavet: Flute Concerto in A Minor: I. Allegro
Orchestre de chambre Jean-François Paillard
French Baroque Music: Leclair, Lalande, Couperin, Rameau...
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Blavet: Flute Concerto in A Minor: II. Gavottes I & II
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Airs sérieux et à boire par Monsieur de Bousset, XIVe Livre: Pourquoi doux rossignol
Le Concert des Oiseaux. Vincent Bouchot: Le Carnaval des animaux en péril
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