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 0x3cf11f2817b51e291f282c8deb4eeea01b4daad183b5f1d69d8a58b066300250. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1fbb4a4-87de-4da2-990b-f256a4f396ca.json and https://artists.proofprofile.net/proofs/artist/c1fbb4a4-87de-4da2-990b-f256a4f396ca.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 0x1bfeb9b91a62ebfef8dd02a7801fd3814d60f1c16bf6f1282784684fe29aebdf. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:22Z), 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/BGA472337626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d1e63d914b17b5e822743c610a78cf1f4627b2f6b64f6a07b89bc806bd48c3. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/BGA472337622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953a9bebfeac5f541859669a0f2fabcfab3aa0b4170c0972a18f5a3f294a7462. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:53Z), 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/BGA472337619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42218a3c954053095ca8dbe5ad322ecc784c1ee49ea6bf32a10e3e0a0dff68a5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BGA472337623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef130a37ebc97c1d13308aa52e900aed59ffe2d9104a7ffc64b7d7ad81656b2a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/BGA472337624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ce33383aa010cded6b8edf80e6f6c56893473e356ff388403cb94a5d9ba555. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BGA472337625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47a49661bf06e78629bcfea96a60313a7d617b01d5cd2ca4d829f3c083d1fba. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BGA472337930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52c99087edb6b92def3ce328fec987adad1fa023daf9a450d26b2ab2570b155. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/BGA472337932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47dc731db4594b9e1c79d1cdbe3511656222ee90785b41d1cbd7fa404d40a80. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BGA472337931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8d16a033aae980e0a85eb00ae5952487da98fbb0b81b1280bf48a19248e7a. 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/BGA472337934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ade0b805c66813d6686f9afad5a5dc0e6a507d27bf0c003a493a077bd18aac5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BGA472337935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9055042fa3e092fd64f39fd553133824cdce09418f99c3b89ca4faedb4b699c. 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/BGA472337939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21734e2b70b8b092eb73a99296db7c15bbf0f4ae10db052b7fcf542a66b8d43. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BGA472339871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecce3d0ce94c2543507fea31037b25c8d1fb19501df22cbbd955be7a3d08c46. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/BGA472339865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b41c2289c1eedb89881df9159743eb9b2c5a6f3b7369417a9e4c7e31e52f7c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:09:50Z), 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/BGA472339870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bea32d01c1f467da79cfe319eb824ffe634d936a89ccb605150a6df68a4bb4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BGA472339867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b7c33e77c051e1e93b2a8fc800e90c84d9146d1ceaf58d62e5b7c2d81f48df. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/BGA472339863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb352251ae11e9286f3e9eeb1234def6d300066c682abaffb8dfc78fe7a2014. 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/BGA472339866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93950bf7912ef80243955761125b7af89b4dd2a284e236c01f58cd3de7b9390c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/BGA472340828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4658daff5ce150a86e78a5ae6e02c3103d95fb5d9d5c7461d32aea904a5d8cae. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/BGA472340834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05aa1303dcdd7ac69749918a435d2f3318a75bcd89bf5a1b65967aaaf3e6155. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/BGA472340830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1612823fb9c218e87541ccf37ae435c52daf8e5eaaf8cdae63f40c836a193de. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/BGA472340833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7376b97b1701ce72a934bcfc0854ec8056f850513b1a39c32cbd8ebe756ce6d8. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/BGA472340831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2311d808504e4cf890eadd9269ea03f76700467aabd47a9c948e346505070284. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BGA472340856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39f46f95b540a8c484a40ef80cff0c5b0ae515db3594bb234889c3b50e402b7. 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/BGA472340850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11902bedbc85d13917f5a43d23f8a4768ef54a7f20539c54889a6990146445d5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BGA472340854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a2dfd97427f4431284672c83e6f202219e0700c752f863c1c301ca7ce07f45. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BGA472340853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f975212b5342a4294df7f684cd20271624cbb3b1863bc52822442c9f20ec84d. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/BGA472340858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4eee828832681827c788686922f00c28b6bf50aa1f05fe546c3f01392f1158. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BGA472340820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9be080205e1735bf770e4fd0d82f017f0dcb0be4f5a0f407378866b44e66df. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/BGA472340816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81391e3bf50671930ff6ba251c0151a3706807f261600a5737cd3b106501a02. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA472340819.