1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4bbe4b865336f85e98d88ce7441a7c6ec6256d0788960565c2d1e7e1a4976138. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb162151-f3b7-4653-a850-05ea447afa37.json and https://artists.proofprofile.net/proofs/artist/cb162151-f3b7-4653-a850-05ea447afa37.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 → block OTSBitcoinBlock must exist at that height 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 0xada65c9e87692a4037c82277e5b56d0e9705649aa9d45fdadcd0c64ced9407a4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN92032975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b7fe85d87d97669545456a83141f9ae1ff4fe37ad0164cc3717a9b65b11188. 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/QZK6P2072539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204a6c7ea3999a9f1b8b176ef621efa8a902ad90d6df58c2a4643bc9083053c7. 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/QZHN52366411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd011f015c90101499ed6e1219631e10896c835622273060fa979990a33949e9c. 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/QZHN52366412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabc497d0c4062943a3143c309164a186b597722c2f69f5951ce210dfde7367b. 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/QZHN52366413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001a2b82be43700697f82812800854885d637db70cebf655efa5e6aab7242b03. 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/QZES62351411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7d6208632efaa790307787b84745238c20b59f49ebc5adbc9116529856b007. 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/QZHN52366414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe9f4f9a2eb55921c5672f73733ac170b09290fa459a752ce43e473b7b35fab. 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/QZES72386955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589e18f51ec9ff1430db114881a56455ec988b11f3a910eaca3926447d2e4a04. 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/QZHN52366416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16835bd4ad934d6dbcf6f39a2b5e97ee856f9238ccffa39d9f762acaf509058d. 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/QZNWX2285269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b59748e9eade59c16ba3654d86fcc562dae8842479ec340625f39cf882bcde. 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/QZHN52366418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dccddbe14eb2557a6911a42419d3cf7b9334b171ab829aa4c2927102a3b73d. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:10Z), 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/QZK6H2336236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fb637503344a21e25826c4361f09a565bdcaf5c974ee48f62c0378ac0769e0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN32457582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc090f1bca3d5c7045756d14770d4244fbf4c481fde99ca8d80324c4b02bc19. 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/QZNWW2471392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a7fab1a0b37e7070205e0852b39294d5b65640fab57bae3dc1aa53d6dc5988. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZTAU2452321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680c03fdab579cf0f14f02dcf7aca8ff31c6e78dfa0e25c258872971b8491fd1. 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/QZTAY2424893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18166878893095ea004d27aedc40bbe0445ff5e0411611624f8f6a4705ad8498. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZTB92449522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eab2dfa1e6074518638bc0efc5e18dbd6a8dc06f39729fac065cccd785ede8. 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/QZTB92449523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f319a4cb06de14ec749e405259fbc4f4c82c40bcf22cdc2b6625052ba15b452. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:55Z), 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/QZTB92449527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7721e8984d3a57c2629af25319444b5e2cb14c9cedfd228a06fb0cc2c346d7c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZTB92449529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db74303a5d394b471af893aed0c54167c67bd3aede2ef1a4bd2057176c47890. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWFW2428440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829015b14a91a4332b7897cafce3291e36ebada2aa586c2fd488841d8d6fe226. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZDA72535686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488fcd47367058ace6b4c65ce1fe5e48b3e880c55b5161a7abce2d0562eb340c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA72535687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6fe8d12b9830bb6d6c18f781872f18a713db110c47bf488624743ddcf66c5d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHNA2502034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f35a8b47c5f756e89976b480a8be4274ec9fed891875c4e633a6e493af9a0b4. 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/QZK6L2559931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5967c8f1eaeca22291ea4cb66b793e32bd08eae18d2c2a3fa73e018f0887e54c. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZK6L2559932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5d92298c07f8336b69b0bba986b5192ef57fe7e18fcdb10b6c25db05249722. 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/QZK6L2559933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4e2444b18f47ddd921398240aa3d11ef0e6e1be0738f6f8153d2e7a8e2157f. 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/QZK6L2559934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bde89750d08f31ae24b60ff7f53c9e97d74865f62dbeecad810cdcaff43606. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZNWQ2541310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872260e7821c3e0d61d6404660a5bee4eda8af8ee66696d7edb2fc5557307041. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTB22551617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d7c01c2f296f271cef063ae2a15c50aad6736fa358435d357af424dfe617e9. 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/QZK6P2573600.