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 0xda19b0c82c49e72d6b7fdfca82ef0735bdac85040cb7ee5f3a3d6b6904a10515. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c8295fa-d2f1-4156-ae54-cb9b356a4365.json and https://artists.proofprofile.net/proofs/artist/1c8295fa-d2f1-4156-ae54-cb9b356a4365.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mélodies classiques et boîte à musique (Hugo s'éveille à la musique)
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 0xb0143c919af4e927552c1a9d0b55d817e6c899517b5c09f88d4c79f7ea8d2f12. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:57:03Z), 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/FR6V81240332.
Les tables de multiplication (Hugo s'éduque en s'amusant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28b12f59ce64de943d3727bc30d7e9e842c92b29e8f06e37b1a037db4f8e65e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR6V81266711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d608e50ebbef428e3d8073cd8796467fd524064a28a5d2b9b85d7f41f45df6a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:50Z), 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/FR6V81266713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d8187bb672f837cfde3bd18d4dc646aa02cb716c6f6a9af59f510bae4f65bc. 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/FR6V81266714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e579ec809936f440b59367a3bbf4201ea1828147899d27902c0103f6cee76be. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81266715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7a40f30d2d29dd7607e03e807011ff9eb9404bc6208823d86e6c369aa98155. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FR6V81266716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0032af99734d77943c60b9f2b5d8feb34c71e956f4322ec0e54e34c24fe3ea37. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:18:50Z), 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/FR6V81266717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61de8b50e9405f3b3bc2a57330f7656b131a721b3af3e26a38284dfed1d832d5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81266718.
Jolies contines (Hugo s'éveille à la musique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdac7ce4a8ab498237b18cd08fcc882810a73f2def125ee64ef34459cfd49fa8. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/FR6V81239799.
Boîte à musique et tendres berceuses (Vol. 1)
Boîte à musique et tendres berceuses (Vol. 2)
Les chansons de l'alphabet (Hugo s'éduque en s'amusant)
Les musiques des petites cloches de Pâques
Ecoute les cloches de Pâques (24 versions instrumentales)
Le Père Noël raconte les fables de Jean de La Fontaine, vol. 1 (16 fables)
Les tables de multiplication en chansons
50 berceuses d'hiver (50 berceuses instrumentales)
Le Père Noël raconte les fables de Jean de La Fontaine, vol. 2 (16 fables)
50 contines et chansons pour une jeune maman