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 0xcca29014d9669702b1e9ea047b7ab0eb3d964322c95ab232474ed735ec75f0bc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5239818f-3302-49cf-afb6-471479b953e9.json and https://artists.proofprofile.net/proofs/artist/5239818f-3302-49cf-afb6-471479b953e9.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 0x9ac476f331797f4991102b7f44ad1f6a0cc0a06279fbac66a2fcf4ff7d5f3122. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRPAB1504004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fa57fd99496804c36f48456165d030a1b44e119471ef4fd0774a9627da147b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR6V80701691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeea8a94dc934cff6e4d9d79ff1656e396608c7227dc95aa4dcdc2e85a6657c5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR6V80701692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a81f767dc7eda20a210989ba63864b2f54d1d0010f9dc3425ef31713457d1fe. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V80701696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a91c0787c57baa7c0cee1cd6c9f88c361a24ba8feb7a829e29fb20807434264. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR6V80701699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75347726add5c4c27d7519b9b9e7dbbd3299b71f6e00d4654f714072325e8bbf. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:09:32Z), 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/FR6V80400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14879b12965c23d19cdf70132250a187a69b0d8e7ecf34f2099187ffb19cefb2. 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/FR9W10902474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c7542a1a641439f26cba3b66d906b4460e701b15329fb7e8d30b654826189b. 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/FR9W10902475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ff1e8d7fa5d5bb49903316764e21d19f1a323cb5c07b5eea8645dc34326140. 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/FR9W10902476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3577f2fc6dacd62298fb58c4f9803ff58a1952e587e57c77e947d521efaecd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W10902477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f299de91e29e51d3f77d9f5c5fb7db57b2616e037c811f4ff1e0b33aabc70b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W10902478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747fb9781d28015ea9d41426998723a9632f704bb22e0f4ad84939374f547939. 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/FR9W10902479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe76c28477dbf25a9367e7aa7a2eed4b2825f9675e65d4d249ed8dd5a21f3e9. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FR9W10902480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51d6fb98414722ebb5a56babc0f7f7869b4aed921182649d3d814d751350f27. 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/FR9W10902481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f49a27525641f6e93de9c362e130fbaeb4a148ede7597006b09d03f0645e924. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W10902483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49b34a8e2b253cc1cf39b818fc081db3ed346a273b43a177baab4b8b539321d. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR9W10902484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c22bc38f906ad7128074208b455e59372ad6fd7055efcad85fb77f542bf59e. 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/FR9W10902485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a93b1a8b7000b847dce742ef13a9235213064897bebc21f72d3cabe91ab064. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9W10902486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7263bcf9d41165f64d514ccffbf9480b9bf6aced09a5a540f7d054236ebfcc15. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:02Z), 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/FR2EI1200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea8d849b53cb5e84f2eaff651a8bbd3b1f72df6655e8e81d45d7cf88bb0dad6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:03Z), 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/FR2EI1200470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a446ba8281f5a3bd9f75325ad43c1b81c8f006d6bf5a26c229fc30f7aa4b98. 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/FR2EI1200510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b90cb7b30e233dade21b445ceed1643b0f9444846c7ad98efbdab789b19d355. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/FRPAB1902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63de9c6a04f9cb3d7a2756d7125901e3f1e12ca14b4f3e197b5d76efaa1eedba. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRPAB1902004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b34cf2fe2d0e74913b019fc4fcb4855eb70a071adc1bfd18c4f1c19922a42e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRPAB1902005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb11c59612e12de03683d145765f30bf6f0ab905c1af548e1d0c31088a9625a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRPAB1805001.
Broussaï in Dub - Une seule adresse at 129H Studio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d69ebd619f9f03ecf5e4e2ad45a9d8298ae91885b92de9a12eb98f1721276a0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRPAB2207001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa190a25f04625e49935549f1627d5ea0bb4576ce07a5194144fe281f374469. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:41:57Z), 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/FRPAB2207002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276a5fa6210f0d3b8510f77c92727e690a5499f79d7b1ac3c48018b5403c4a18. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRPAB2207004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1828ab9a8f8f7459759b57c64d70ecd3e59c3304a5ee3566a40827fa3338428. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRPAB2207006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d10e02136822cdc111367db57d6dcbe3d66ab86515e8d219a0006813267791. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRPAB2207010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6521cc240a34c6e7e4583b71f00ab28e4910fe9548e43838cec2779a92f899. 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/FRPAB1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f87f67caff4d64d18dc22a20c464363c3ebd7c4eed0cc70ce72c64e81106113. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR3DJ1800290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4262a36e909b4aec5eb4522d80e611be4fb6dd481698c7453511ef8e426cf2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR6V81879078.
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