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 0x65af3ad03d5a2fac6872c1bb805beac4390814a1ebee947e0197584a9c57e98f. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e87c751-32ea-4b10-ae03-6853653cd152.json and https://artists.proofprofile.net/proofs/artist/2e87c751-32ea-4b10-ae03-6853653cd152.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musique celtique: Envie de Bretagne, Vol. 1
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 0x9e35e64720302fb816211923db1202c1cfc5fb90caae155b6655e455a638b281. 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/FRX611400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbf9a4dbe64abb29c884f7521e9f2fd79a1c5580cd3e837ae5a77a4ea4740bd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX612200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589462a4337fc84aaf1e3ffc8825ee8c6c82ee8b4c01f06e1f4d6a3c69d7725. 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/FRX612200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2325fa6b77cd5461bd305ed53c21135eae29d7fa574f08d7a1612f6151f69066. 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/FRX612200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a7e3deaa445d685b1e4b86cef5294edb3ecf995b368e3cffc7747785f07fc1. 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/FRX611700004.
Suite au carillon (Ridée 6 temps) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2012e18b9173c7b11c89179343bff9deeff3b40572f5f492484b114d144c25d. 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/FRX611700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b0c5f6bb02a6028da89161a512ac392ea8aed0ed75001a548ae4790a407430. 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/FRX611700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b32c5d2f3b1b7b7b0ca42be8912d81c1fa8ad85515e99505bc7ca03311ebe1. 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/FRX611700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07682c50b61cdf99d1ce64ae4d09f331e42790f7e018b42199e50e8369c8f4f. 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/FRX611700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20aa7823f77e9e350c4ac36fc0712c06de9f9c400e9052b7f2156d583aeeab5. 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/FRX611700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679645923718dc23080bc7ddd683f41e8fe9b5c40d2c4c9144fa954c89adc4c3. 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/FRX611200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62c67295c66a55a77c4bc55e9214a9936583a8aba42035349d4c34a52ff6987. 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/FRX611000188.
Bretagne: Les plus belles chansons du peuple Breton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4492184045c3cb63909b489a58a28a9b8a1db33504a4c3bde78b70fb3f3f9edb. 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/FRX611400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad16e1019cc8359f8a320a354b207012160da9f3402b7f9f66c15d890470ffe. 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/FRX611400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ff7cfc81de7d15098b4054a4486c49cf616cf7ed031a786bf191b6788819b7. 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/FRX611000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebf804f22a80a72dba3909dd6e7041dd449e879bf052264db489007ff19b3f9. 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/FRX611400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae38dbbf0051ce076b59375782d55ab5360634a45298d52f1dc0cb2e025c422. 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/FRX611400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe73b433ab2891ed6f036d79cd7d856496abcf3f5a97d641ae3907e380fa263. 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/FRF468800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d590456b3d80813de1ea387272e2aeda8c597e4720e893a02b30b88d32c3c7. 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/FRX611100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4c39ee0e1f4205cd5fec79b78ce922bb92e83f431871e0887d779522e5f24. 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/FRX611700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b50fd9e6fec457665afb1710801c75a8e1353c17fd24abb9e169b40d1ead578. 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/FR9W11513679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4de8eedd9fa3eb36ff83dfa066b09419c7ca05d31ddfce40ec4e4c0d42b38b. 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/FRX611700044.
Le triomphe des sonneurs: Bagad / Couple (Les orchestres bretons)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6321d65491ea53b9c8e63c77b21cad0c88e355b035f301431176b059c870e2b7. 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/FR26V1524546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad261dd3afd8c1b39aaa18f5a218eeb71c1a272af4f8896599a463030b01d75. 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/FR9W11206835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a88321c39f70428153ba3cb3bbec018616cc50cd5d180c89ea7a073a5447691. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX611700215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32428ec631dba494aad74712a56eb65714ec6fd2986bf4dc103df9a063129b6. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FRX611100062.