Michel Piquemal (born 15 April 1947) is a French choir conductor and conductor. He is also an operatic singer (baritone).Biographie, site Larousse.fr. Biography Born in Paris, originally from Arièg
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 0x083508b5ea4b6054cccbfd2fbed3519ee8aff34d94feb43c8733b68dc3236c92. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d4fbd9d-37a3-4c61-b87c-6d52ca52ac70.json and https://artists.proofprofile.net/proofs/artist/9d4fbd9d-37a3-4c61-b87c-6d52ca52ac70.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Talgorn : Vinum et Sanguinem, Ode à St-Vincent
Poulenc : œuvres vocales & musique de chambre
Fables mythologiques (Des héros et des monstres)
Misatango, Misa a Buenos Aires: I. Kyrie
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 0x4ee7fa14bbe3f68bbe9026b89d569d9d55f12d447a1f2ac54e85bd9eb0b2429f. 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/FRW951614201 — a six-check JSON result.
Misatango, Misa a Buenos Aires: II. Christe eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9310066a9aa3c26deef8dcc13e4f9bedb4fa3b74f6eac8220348042395b18e58. 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/FRW951614202 — a six-check JSON result.
Misatango, Misa a Buenos Aires: III. Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cabfc5a66d59c7ca923ae7dee924ad6c0ad0e49905c6b4e8e1a17e2647d0ff. 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/FRW951614203 — a six-check JSON result.
Misatango, Misa a Buenos Aires: IV. Qui tollis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94c0152626f15d402711eee6717767f1f33e5be74a790838b84aadbea2e5ae6. 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/FRW951614204 — a six-check JSON result.
Misatango, Misa a Buenos Aires: V. Quoniam tu solus sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df6311c0c5e0b08fb5be2d56e722d8725ac81b5761f25240755af24aee9bdb. 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/FRW951614205 — a six-check JSON result.
Misatango, Misa a Buenos Aires: VI. Credo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf75f7c0dc226e1f7ca027232704b8d61b1d1bb6e181500722d890b65ec83f1. 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/FRW951614206 — a six-check JSON result.
Misatango, Misa a Buenos Aires: VII. Et incarnatus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aeca1232b2e085d8c80d0e44fc427475e3d42d59fc29caaad16ef2ec5c1fff. 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/FRW951614207 — a six-check JSON result.
Misatango, Misa a Buenos Aires: VIII. Crucifixus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555e337befbb42b8019fbab260a1371f9ecf54e45dd60f0138d58693c63a46be. 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/FRW951614208 — a six-check JSON result.
Misatango, Misa a Buenos Aires: IX. Et resurexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33c739e7241b057a45054a42a28184926e7671a5b08b4402af2c319243e1c57. 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/FRW951614209 — a six-check JSON result.
Misatango, Misa a Buenos Aires: X. Credo in spiritum sanctum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd24916c988837d69f7fdca09a634050fc2d962e2f129f446d5028e7ee194b6. 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/FRW951614210 — a six-check JSON result.
Misatango, Misa a Buenos Aires: XI. Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0348c1af1344a1f31415cf143c0a4cdfcdb59155cca200d60f2f0b977e890c09. 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/FRW951614211 — a six-check JSON result.
Misatango, Misa a Buenos Aires: XII. Pleni sunt coeli et terra
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Misatango, Misa a Buenos Aires: XIII. Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72b9e8277cfd0f0590de4d2de217289be7175222cb4cacca1d3bdc2c442c238. 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/FRW951614213 — a six-check JSON result.
Misatango, Misa a Buenos Aires: XIV. Agnus Dei
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Misatango, Misa a Buenos Aires: XV. Dona nobis pacem
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Martial Caillebotte: Messe solennelle de Pâques
Lendvay: Via Crucis / Stabat Mater / Fantasia and Fugue
Sauguet : L'Oiseau a vu tout cela, Garden concerto, Sonate d'église
Litaize: Missa Solemnior & Other Works for Choir and Organ
Rossini-Petite messe solennelle pour 4 voix solistes
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Laudate pueri, Op. 39 N° 2: Laudate pueri
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a5ab8bfbb172d4626b0aa595dfff5e6c7dbc92f99ca1b17600d257e889e4e8. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRZ398300110 — a six-check JSON result.
Rossini-Oeuvres vocales-Duo des chats-Ave maria-Promenade
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09acb7386e95fbfc8cdbc1d6259179b3824b6354766806d7b6b9a5203c4a2db3. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FRZ128101130 — a six-check JSON result.
Péchés de vieillesse, Livre 2: Toast pour le nouvel an
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55321122c60ffad45b35596841d0236afd3b4b99eae4b74d9e70e4dbf4fa362e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRZ128101160 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87f623d211f479f2fd4d77d11f05847338a5bbf8bf2641e97a6749fbe4168c0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FRZ128101170 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcc8e7d6794d4aad4208520e6c1e0da9075ca46e4f2648b5633cd292a6c67df. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FRZ128101200 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f41e0748006297049a30aecfb3771914bdf3c4da68068cc0ce48ea0a40d96c. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FRZ128101230 — a six-check JSON result.
Ropartz: Miracle De Saint Nicolas (Le) / Psaume 136
Orchestre Symphonique et Lyrique de Nancy
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Tomasi: Requiem Pour La Paix / Fanfares Liturgiques
Durufle: Requiem / 4 Motets / Prelude and Fugue
Durufle: Messe Cum Jubilo / Organ Suite, Op. 5
Ropartz: Psaume 136 / Le Miracle De Saint Nicholas
Poulenc: Stabat Mater / Gloria / Litanies
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Schubert: Mass No. 2 in G Major, D. 167 - Kyrie in B-Flat Major, D. 45 - Tantum Ergo in C Major, D. 739 - Mass No. 4 in C Major, D. 452
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Mass No. 2 in G major, D. 167: II. Gloria
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Mass No. 2 in G major, D. 167: III. Credo
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Mass No. 2 in G major, D. 167: III. Sanctus
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Mass No. 2 in G major, D. 167: VI. Agnus Dei
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Ave Maria - Les Plus Beaux Ave Maria Et Chants A La Vierge (The Most Beautiful Ave Marias and Songs To the Virgin)
Ellens Gesang III (Ave Maria!), Op. 52, No. 6, D. 839, "Hymne an die Jungfrau (version for choir): Ave Maria
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Requiem: Classical Music for Reflection and Meditation
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Lohengrin, Act III: Wedding March (arr. for organ)
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Water Music: Suite No. 2 in D Major, HWV 349: II. Alla Hornpipe
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A Midsummer Night's Dream, Op. 61, Act V: Wedding March (arr. for organ)
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Organ Symphony No. 5 in F Minor, Op. 42, No. 1: III. Toccata: Allegro
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Stabat Mater: VIII. Eia! Mater, fons amoris
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Caillebotte: Dies irae, Une journée & Psaume 132
4 Motets sur des themes gregoriens, Op. 10: No. 1. Ubi caritas
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Requiem, Op. 48: In paradisum (1893 version) (arr. J. Rutter for choir)
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Mystic Voices - Divine Music From the Heavens
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Stabat Mater: Classical Music for Reflection and Meditation
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