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 0x9c4630b14863ddb9cb197ca4c0354c215dc6c1382a8c7487fc941050f68c71a7. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99761629-69c4-4270-90de-348371864a8d.json and https://artists.proofprofile.net/proofs/artist/99761629-69c4-4270-90de-348371864a8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jaëll: Musique symphonique & Musique pour piano (Portraits, Vol. 3)
Concerto pour violoncelle et orchestre en Fa Majeur: I. Allegro moderato
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 0xee4589f2034d3f6e4e41b14e1f176f7a36ebf046eda0ad82677810ad7058a73f. 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/ES75S1500307.
Concerto pour violoncelle et orchestre en Fa Majeur: II. Andantino sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf534c8a8a572277b60727cc7e8e9aed60f3b86510c32859fe4f4871a4c8ea420. 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/ES75S1500308.
Concerto pour violoncelle et orchestre en Fa Majeur: III. Vivace molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe6a715c0245c2229abb2c3e8b2494c33d54a10cd3e71c289b8cebd275ade89. 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/ES75S1500309.
Les beaux jours: I. Calme des beaux jours
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2757f58bea60b5b8835621001985b14372919731e818296a6b6b0a9b63f472b6. 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/ES75S1500310.
Compositrices: New Light on French Romantic Women Composers
Orchestre National Du Capitole De Toulouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e24be7709ac0304771da2ba024735885c107d7f699f3840a3a1f473822aec4. 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/ITJXZ2300201.
Six pièces romantiques, Op. 55: No. 1, Primavera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f03832f6d96ef936c0548e62665b3c199d09f38ecfd8c25690869bd557c233. 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/ITJXZ2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4b73b4d6e2e57ba7ef4209466a878a32373e5484c0e1d5223e9c68dc314b1f. 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/ITJXZ2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999a39a499b13d57ea96c4ab9de210a3bd4daaf964f579729c5121479acc4bb6. 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/ITJXZ2300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4dc91a15501251fdebf29fd5063a3debfb3d70e568f0d35926c3cb23b75968. 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/ITJXZ2300207.
Petits Poèmes au bord de l’eau: No. 2, La Barque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d9a942c5d5f5c6389426a738b3f5f22d2da4f02c69b1db42f1139000753e3a. 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/ITJXZ2300210.
Marie Jaëll: Complete Works for Piano, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002c6ad8778813489aec46467e53eb2616b56b525c891aa94720508991a7b6a7. 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/DEW741607001.
Les beaux jours: No. 11, Ennuyeux comme la pluie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bd106c03c0906fa701fc81c5281051fa6d22604236dbeafccb5a5a6f78995a. 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/DEW741607045.
Promenade matinale, esquisses pour piano: No. 1, Aube
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38552030ae150d9d6b1747fdd12e7e36a88fc4e7a5b4eaed4ee6503739e22bd7. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/DEW741607003.
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
Les beaux jours: No. 1, Calme d'un beau jour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712b65e02c4efec25ae9ddba6eee2cc1c2d32415936bd79ad35c726b911ae72a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW741607023.
Sept pièces faciles: No. 3, Conte de fée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55b0885b481b371d09f9d3a28bdfd2cdb0d11712e4d9a5710663dee45e4fcbd. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW741607049.
Marie Jaëll Complete Works for Piano, Vol. 2
Marie Jaëll: Complete Works for Piano, Vol. 1
Six esquisses romantiques pour piano: No. 1, Les ombres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328b7f626203284a3bc87843c603b9883cc240a3921e26eecf95789138378474. 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/DEW741508012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88b88e5b518112e337db8275135f92b1018dac89ace5fd5083101badb9ddd7f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEW741508005.
Jaëll: Sonata for Cello & Piano, Melodies, Lieder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4d961632eedb4d4d1f51591bd1dae9608dfe03dc8225237fe2838f1a76eb8d. 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/USSM19929988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f082b71f5909784326bb3d418a275b18dd39651bc5c264a883e6bb4dd775d. 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/USSM19929975.
Pianistic Miniatures From Female Composers
Mendelssohn Fanny, Jaëll Marie: String Quartets