Nathalie Stutzmann (née Dupuy; born 6 May 1965) is a French contralto and conductor. She is currently Music Director of the Atlanta Symphony Orchestra and Artistic and Music Director Designate of the
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bdfc0908c8bd45f51415c555862ebde6f3c4a598e101373921306e1e0d6f28. 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/d01f4ea0-175f-4dc3-99ae-f22886f4a9a1.json and https://artists.proofprofile.net/proofs/artist/d01f4ea0-175f-4dc3-99ae-f22886f4a9a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Harp Concerto in E-Flat Major, Op. 74: III. Allegro giocoso
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa87935bc8b99291fdc1656b3a9948b04ef104f9e3851751f1642d963e6807e5. 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/DEE862200991.
Raymonda, Op. 57: Prélude et la Romanesca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3179706db6533f9f457a43fe423b1e1981de313ac326af6b9d6f34a82cc687b5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862200992.
Falconieri / Orch Tufvesson: Il primo libro di canzone, sinfonie, fantasie: XV. Passacalle (Orch. Tufvesson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d5ebe8b5f84527cfef1139ca62513e79c24c87945073ec93b72324ac1c32bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1702145.
Caccini: Le nuove musiche: VIII. Amarilli, mia bella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe1f4b801b8405068577506702e4b124434a59373c05d64087286476f0a11ab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC1702146.
Handel / Orch Orfeo 55: Alcina, HWV 34, Act 2: "Ah, mio cor, schernito sei " (Alcina) [Orch. Orfeo 55]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c7232afc7b1d1308bd6c7f8e8db5ed9f104553efa07ec5ba74a7bc21ecfc4f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1702149.
Conti / Orch Orfeo 55: Doppo tante e tante pene: IX. Dubbio di vostra fede (Orch. Orfeo 55)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de3e39b01e0530c1ba081bb54740ec3e113c6c25e09cff13ac1600f62955cf7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC1702151.
Parisotti: Arie Antiche, Book 1: XXII. Se tu m'ami
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f63e859ff20574a919e61acffed29fdc42bf818d35bd1f5c2372738a8ee9e33. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1702157.
Paisiello / Orch Courbier & Delaforge: L'amor contrastato, R. 1.76, Act 2: "Nel cor più mi sento" (Rachelina) [Orch. Courbier & Delaforge]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3788444670a7a93646245c3e9c84000520cf383ed6a16b9cdc35b74a4c1699d8. 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/GBAYC1702164.
Caldara / Orch Rincòn: La costanza in amor vince l'inganno, Act 1: "Sebben crudele" (Aminta) [Orch. Rincòn]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b8a2b984fd04490686f61104744a16388e38eeae4f4629c942ccbbd4f17346. 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/GBAYC1702167.
Marini / Orch Tufvesson: Sonate da chiesa e da Camera: Passacalio à 3 & à 4 (Orch. Tufvesson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e903941a24442d80029c486e0ff842eed8bfbbc173886107ee15f7964853910. 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/GBAYC1702169.
Messe in B Minor, BWV 232: No. 4, Gloria in excelsis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370b04185e8d04d5e62888dd6ff8a28ce2940e2c6404ecc07fbd6dd95a4259be. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ130837040.
Messe in B Minor, BWV 232: No. 3, Kyrie eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52680345ba9e9174cdf6c6dda219f5b19015d9991c25144777455e666e42a68b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ130837030.
Messe in B Minor, BWV 232: No. 7, Gratias agimus tibi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f107894e223519d9166464e64fee17cf3b23e5ff4415ebe5ec594ad80bf0a8b. 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/FRZ130837070.
Messe in B Minor, BWV 232: No. 9, Qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49d12194f5d6c9be3daa7a7c1c74ad26515ae1ad1c9e03704f4d47345954b58. 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/FRZ130837090.