François Leleux (born July 1971 in Croix, Nord) is a French oboist, conductor, and professor. His professional career began at 18 when he became principal oboe at the Paris Opera. He went on to win a
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 0xb11be56ae4bf1b8e43cb2139339959e7312845c1cf44ec0b86c60f1c4a5148f4. 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/d0f6eb29-610a-41c9-ab45-2af1b513f7d8.json and https://artists.proofprofile.net/proofs/artist/d0f6eb29-610a-41c9-ab45-2af1b513f7d8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mozart & Flute in Paris - Concerto for Flute and Harp, K. 299: II. Andantino
Mozart: Concerto for Flute and Harp, K. 299: II. Andantino
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 0x193be45fa257d78a51501fb16c27e734edf0ae268c845fc229d11b4892a5f27c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYC2100515 — a six-check JSON result.
Winds & Strings: Spohr, Ibert, Janacek & Widmann (Live)
Dvořák: Serenade in D Minor, B. 77; String Quartet No. 13 in G Major, B. 192 (Live Recordings from Spannungen Festival 2008)
Serenade in D Minor, B. 77: I. Moderato, quasi marcia - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f8dd305cab6f618ab7c820a2ff337915263e06177eded20b564b990f22b503. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEAQ70900175 — a six-check JSON result.
Serenade in D Minor, B. 77: II. Minuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13f0a54f2858e5246bea81a6b4b1effe9bfad10f88a4d5a02e8142ec4722a4f. 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/DEAQ70900176 — a six-check JSON result.
Serenade in D Minor, B. 77: III. Andante con moto - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb202fb4828929f3ba79b06f6ffd894c0eead31fbcb381527774b1357ecdc5d5e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70900177 — a six-check JSON result.
Serenade in D Minor, B. 77: IV. Finale. Allegro molto - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219e6af1be2d2d48a5356402ab243a1697fd003892fde5c5dbed66e8585d79c0. 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/DEAQ70900178 — a six-check JSON result.
String Quartet No. 13 in G Major, B. 192: I. Allegro moderato - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e6aa64bfcc8a5429264874e1c8de10cc29f48a3988c7597a3f29f9c1837237. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAQ70900179 — a six-check JSON result.
Oboe Concerto in C Major, K. 314/285d: I. Allegro aperto
Mozart in the Jungle, Season 3 (An Amazon Original Series Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523d5c6e6fd0df8e22abbc94e5237c3dd9a25b995d33a7f29c31ec2ed7028ce7. 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/DEE860800591 — a six-check JSON result.
Oboe Concerto in D Minor, S. Z799: I. Andante e spiccato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3edd38b3ac345dcab01c48e23067ea5a214b9cf14d503099b9c84860d33d9f3. 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/DEE861100754 — a six-check JSON result.
St. Matthew Passion, BWV 244 / Part Two: No. 39 Aria: "Erbarme dich" (Arr. For Oboe d’amore, Violin, Strings And Continuo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446e37d897d8bf95b65724fec9c77f0aa6a484442cec506a60cf8df2bf05338d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961304810 — a six-check JSON result.
Die Zauberflöte, K. 620: Ein Mädchen oder Weibchen (Arr. for Oboe & Orchestra by François Leleux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c7ae35ccdce6771441341bc1749c35962c0110c8bef44643da1aa81edf185. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DEE860800580 — a six-check JSON result.
Mozart: Oboe Concerto in C Major, K. 271k "Ferlendis": III. Rondo. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6542128af68b02fef77bf14b6835f46f82f16bbfcbaf3c8a75ac359a5b3c12. 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/GBAYC0500689 — a six-check JSON result.
Ich mag keine Klassik, aber das gefällt mir! Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c7ae35ccdce6771441341bc1749c35962c0110c8bef44643da1aa81edf185. 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/DEE860800580 — a six-check JSON result.
Concerto for Violin, Oboe, and Strings in D minor, BWV 1060: 2. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229475f5731977c47f25da716f36ed780dd5dec7f5d727c37692fb25ad8ed0a3. 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/NLA509510111 — a six-check JSON result.