Violoncelles de l’Orchestre National de France
{"copyright_id":"0x178720ddb89ade291c2ca83d615bdbfd1d3b0cf2dd1ceec203b80d8eec226fca","name":"Violoncelles de l’Orchestre National de France","registered_at":"2026-06-14T19:40:41Z","symbol":"NIM0556082","token_address":"0x60b1def6161ee6a2d078daac8b942d9549fe439b","type":"artist","uuid":"90f94a10-a7f9-4f46-8ec6-832eccd412ae"}
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 0x178720ddb89ade291c2ca83d615bdbfd1d3b0cf2dd1ceec203b80d8eec226fca. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90f94a10-a7f9-4f46-8ec6-832eccd412ae.json and https://artists.proofprofile.net/proofs/artist/90f94a10-a7f9-4f46-8ec6-832eccd412ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xbbaf6153636b651ef64d3cf1cb18a9c9192eaf66986fb9802d1c92ae185a5d62. 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/FRZ131434011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1868e363d4fa259ed020369ba6129cd98dd8827af97e34b9a07a0f409f84fb2c. 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/FRZ131434013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5b267ac9b75820f90dac1795c42607579380b16cc0bbbe84cca884adef08c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ131434014.
Bachianas Brasileiras No. 1, W246: I. Introdução. Embolada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25efb80759682fdffca4168db74a0dc1e3444bd89457fce6aedd0f953a9d175a. 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/FRZ131434015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49083bff4fee9467f9d44361f9fde1821d374a64387f74f9e981b711e9bad6c2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ131434010.
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 0x40b60a8f3f6e3a06abccfb32fccc2a41dc06c53d7588ac4bbfe7ff6490353f1f. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/FRZ131434012.
Bachianas Brasileiras No. 1, W246: II. Prelúdio. Modinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60493b5d17386c9da028ecf7268e8396168a6efda2312f672b0b75ace4d3a73a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRZ131434016.
Bachianas Brasileiras No. 1, W246: III. Fuga. Conversa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4719f40d9bb985a05b1fc63858aa398ecf6138bf63d76535090f6f6fb83db032. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/FRZ131434017.
Bachianas Brasileiras No. 5, W389: I. Ária
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5869a6033ebc760413835d3c3dbdbe20c504509a3d93f34f5c659da399112c0a. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FRZ131434018.
Bachianas Brasileiras No. 5, W389: II. Dança
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e6d6d553497052e194874a4676aa26e27ec9fb0ab4cd45da3ec36cb3888f5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRZ131434019.