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 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 0xca2578344258af0402b9ad2ea4c917c1426ba1f08de14126568276d2f7f09e99. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e56765de-cf1e-44f5-91ef-f70e5f0da77b.json and https://artists.proofprofile.net/proofs/artist/e56765de-cf1e-44f5-91ef-f70e5f0da77b.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 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 0x9032eab6ff2ad2c08cac422b01991fb2541ee228242dea7f9fde92fb8b0e97fe. 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/CAZB91600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa6b197123a346b6920e1e3b9057b9a30110b5713d8e12474a1b50b82c2c309. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CAZB91600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4225e14e11a2b04e3586bad14f35f553f04d0689e13fb4322bcff4672e387f3. 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/CAZB91600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7833d2f0a691df4d98bbe5f544e53b2737aebf9efdc09892078d766b9aa9f7f2. 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/CAZB91600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5bb12a5f5fa8a069b726a3b95087baebaa469830a5e52db2186035d859e154. 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/CAZB91600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa016772e502ad3f97c34fc3f5164e2795deb62984cad3b4272d4f4cb063d276f. 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/CAZB91600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd16c6cd71e0f7d5677a7cdd29b1acf139418bc38e1e79f93c89051553eebac1. 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/CAZB91600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bf8dca88bcba02fbe8c8564a4a3732f1991651ba6f4daae3da43226f85f8a7. 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/CAZB91600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5564164965ccb2e1b380c1233f0e521eff50ff32208c0416b733b23d88ade4. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/CAZB91600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0e4a215e7745213d029a42a7c29135ede6c4c957d7158c331b78592a7c142d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CAZB91600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d7d04bfe089b706e3ea813953207ca23b31381e4ca628a6fee51d36855385d. 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/CAZB92300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4442eef9fd0aefde3f6136a1ee88f37cce8a4f32e144b0e8270849b98f2825b1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CAQSB2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c493d7585f3e5bfbd749e5f2d8435a5b63b91a343bb468a38e66befaad59d3. 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/CAZB92100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26ff4519ac45f33084f9b4c8626a7022e24c02578fa7f42a47005ab7bf783e2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/CAZB92000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e08bec2feccd2f2ec630fe0bb484ca9099d6ce04b0df2fcb8d9173678dab83. 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/CAZB92100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc0df6c6173231e94c7898a0c0a7ace14d8e9c1f43a17a4cb7a47b88e832054. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CAZB92200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3caacfccbaf37ab3907bc1c2473b36466eaa61ed636110362747b5db55385f. 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/CAZB92100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357d04f108b9ee2dd3f11d94769612abf018cd09bbdf4715d28269334390b373. 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/CAZB92000002.
Personne ne pourra m'arrêter (La résistance) [Version instrumentale]
Personne ne pourra m'arrêter (La résistance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710dc92fc9f7dcf1fa327a94cdc901797ea11257a296723162cc6cfc0e613065. 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/CAZB91800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c826f2a70384efc4b0f2c549fc3fa74c8bc512c936635763e71941565ce67ef. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/CAZB91700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e02d3827e8a9a4a61b5cdd81ae6b59b71cca5f21161571e87140bb03cfae625. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/CAZB91700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3159b0e5f1944f94931f7e8aa8ee4e84500f3e69a4e5140ecd29d168df7117. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/CAZB91700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04875eec06ffb75039339f3c22f312037d873a5a7e1cdf003b3097a44b235812. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CAZB91700005.