Claude Delangle (born 1957) is a French classical saxophonist who taught saxophone at the National Superior Conservatory of Music of Paris from 1988 until 2025. He played in "Quatuor Adolphe Sax Paris
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 0x8cc047296f280aad2fbe4df9b68bc8299653602019719added7a7cc5004d9dd0. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da4d0ce2-9090-4d25-915a-2451f327959c.json and https://artists.proofprofile.net/proofs/artist/da4d0ce2-9090-4d25-915a-2451f327959c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Denisov / Raskatov / Vustin: Saxophone Music
Natsuda / Nodaira / Hosokawa: Japanese Saxophone Music
Koechlin: Etudes for Alto Saxophone and Piano
Saxophone Sonata in C-Sharp Major: I. Tres modéré, expressif
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 0x6a7ccd9e5887cca430c7f7123e0f594db31fdc56329b610d1df4bfd490adf69f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEL0230010.
Saxophone Sonata in C-Sharp Major: III. Fileuse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd37e896a69f59843c54d397db8bf51f252e55912516349349ff5d9c9f532c5f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SEAEL0230030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fd8f611daac2086484b42c34dbd11e07a65603841ab67b9af6485d0e1d738e. 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/SEAEL0230060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9faf397bf061a2028c88d924238e8fc689ec9888940bbb5c9b650c931e68c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEAEL0230120.
Tableaux de Provence: II. Cansoun per ma mio (Chanson pour ma mie) [Version for saxophone and piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e52fc75b849e2045cf224a164dd2525a7a73417f3962ca5b1292fa457a95757. 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/SEAEL0230140.
Tableaux de Provence: V. Lou Cabridan (Le cabridan) [Version for saxophone and piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af3ef72637e53c969ba876032d5cd9894038456e1f602fc13549bbe17e0f89b. 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/SEAEL0230170.
Etudes pour saxophone alto et piano, Op. 188: I. Pour les traits rapides
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a51e00ea9c459d68fc46bbc92ba7ba783ddfc989b9de66996d540fad631723. 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/SEAEL0230180.
Etudes pour saxophone alto et piano, Op. 188: II. Pour les sons liés et le charme de la sonorite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404592d14cd23a6d0703c114fb48cb23992e120454d75eda8402ac8935036d2a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEAEL0230190.
Etudes pour saxophone alto et piano, Op. 188: III. Pour les arpeges
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d6023679fdf72945c43366d994b3ad0b8abca6d280953053e2034d7beeab5. 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/SEAEL0230200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5acc4da5bbe399e267ace370821ab45f060c050dd13923daf06c0f98b3db119. 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/SEAEL0230270.
Historic Saxophone - Music Written for And Published By Adolphe Sax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c84798538b017c243b5cf59d8a7a9d97e3278da3ec17ce3dec8e5b804a4910. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEAEM0370010.
Ibert / Tomasi / Ravel / Maurice / Schmitt / Milhaud: Works for Saxophone and Orchestra
Concertino da camera: I. Allegro con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92df2ad3362cff7a33c565e0696fcf236aa32a935dde46508b3b786dd30be60. 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/SEAEN0757010.
Concertino da camera: II. Larghetto, poi animato molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e3ab231848f9e31386d1c51ac0777f692289245811bfc8c85833a4beff4ef8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEN0757020.
Saxophone Concerto: I. Andante - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d5dad23ad03d3c98a5b75a5135e37f50ccbbfbefa0843dddd462a1d4aa0b5b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEAEN0757030.
Tableaux de Provence: I. Farandoulo di Chatouno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415af4384be4dc4fb2e9f3ee9f44cf75d357c4e3fed2044a21d9adc60e96a4f3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEN0757060.
Tableaux de Provence: II. Cansoun per ma mio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d3ceb99a7a8a09a7f1e6274bb83db1e943bb1b14dba48c70b8e699dd6ef577. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEN0757070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0112176edc5e5d65cdaad9753c1037dee24746ba2cd8376f50c8401c74c8096d. 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/SEAEN0757080.
Tableaux de Provence: IV. Dis Alyscamps, l'amo souspire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae14ef7addf38c9f34329005af6ce5ede0eaae69437df76371a84f96126e25f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SEAEN0757090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf003e73fa66aa1e68e5ed09cbb6c8b967e9a3e6d72961404ef1eecc6bf2a4a7b. 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/SEAEN0757100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa59e8730686be14ce916a00195274ab0f0a2efd36e477987d8408f262a98ff9. 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/SEAEN0757110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d772f2eed33083fc941fefed35179a93ed0cda495a8eade8129196d38c422e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:53:57Z), 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/SEAEN0757120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae703991696da7c6e19fef1cbcee887d16758a2f08b5fb57d35fb90701972026. 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/SEAEN0757130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0524b39ebe5ca529790ca2c755c6f0209ac389e0430d310ec4ffdcb2122e0d9f. 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/SEAEN0757140.