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 0x6e74a145db4e583f7c2abed1e92b3513e7b3e58760430c47a3155dd41646cc38. 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/3a5e63cf-cc48-4d5b-bebe-ba92a2f55375.json and https://artists.proofprofile.net/proofs/artist/3a5e63cf-cc48-4d5b-bebe-ba92a2f55375.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 0x0d06f22341d64435fe52bf31ca7743839e9db656243b00c88aa89cbb356934db. 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/DELJ81630192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c0cc84ac2d9d62d80b61c1134caf9999b005b0ceb1ca1c2046ba281887096a. 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/DELJ81630193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaa902d0ffc104ec947eb8159dc6249b1c5ed2a325b4f858751fc53d6330078. 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/DELJ81630194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7914a31eb4690a72ccd420b1be5521d80eab05feac9d714d32bb3915e52668. 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/DELJ81630195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffddbbaadbd8140e9a21c147af9130125417b3b61d79b7b97575d8be3ab081da. 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/DELJ81630196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0c5fc77bf1311fd603b4d9789371f5703b8df9f00cccd5a244026215d6374c. 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/DELJ81895791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd220466751ac45936c2550c73175ac3b586fbb01b516e297786799b5061bd3ae. 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/DELJ81895792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a2058a0036aa216a5175b2f4f681a2ee123fc6ff72bf71b3e71d156186f53b. 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/DELJ81895793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49d243fcdd7fe1f4aab6bb6af3bbbc468bb6474ceb79292e933fb1f541e90c3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DELJ81895794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850ca834c56757e7232020c1d90a06e2355a286e40b3d14541f87ae1bf63a4ef. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:35:56Z), 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/DELJ81895795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abb42ffacde9d13dd73ac08232b5a03e4ed4ab0a57c149341ee85c52d7a06dd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DELJ81895796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bffcf8cc659b0e638226ef319e01ec19ef1a6af32177e6f913a31e977258756. 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/DELJ81895797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5ad480f78360915ca9ea91e8ad4dedc395e56a962b1368c92130ea9cdfa78a. 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/DELJ81895798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389bfe83abd664fc0418b18f29bcf84894d5977dede28b9443844faf4b0846d7. 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/DELJ81895799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc985ec9b4a9c0478284448d3da116b429afaa769361893f144963d4a5f8d9429. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DELJ81895800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a74b646902f1f1baf52cabc095b7bf7d83f2ff19b70f4f929115ce09cfb082. 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/DELJ81895801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259f674212a4425a5c04899467479dfb5b39bb26edc4118bba24e89d5cfb0d92. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DELJ81895802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22f2ea382db3c4f8301ab4254e470eb4993407e5997a850e5f75efcf4c0ab2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DELJ81895803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1699d73a82aeb2e4377fd3bc09feb0f90f687625a07b4de08522b49aafd1a9. 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/DELJ81895804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112e666da61c7f9f84f7cae61ca22d4068ea8de5f7cde87d04fa6a698491bf95. 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/DELJ81906356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192d46725d1891220bf5180b0790a39dfbc739f6b7b0de9ebfe140f4001f8175. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DELJ81908676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2205839bfb655a7d54c51177db2da0186000b6af5ed071b694e3bf8ff82feaa. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DELJ81912802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bef8019ee93aec8105ee984ae3cf4f2508d7244b88d4c0fadf1c45aa38d789. 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/DELJ82040272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af8a09837930ca8acc21da111caf89ea268128e036f14d73294252173507384. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEPI82021641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab858acda3c029e6862278d9665a4de60570b15ef3a47a67bcab37a07ec1761. 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/DEZC62156432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7125b10844a1e95bee73148b66291c5f2a1eae45f0c38ae70238310f0c6e66e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM6MZ2217664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc79d7178ce5f667263c07a94945c30c57b2aa4300ea5399f06fb249bbf1c211. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:27:02Z), 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/QMBZ92370430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf221592f429644afc6b4aaf2bb4c4dd6545fac6b9bfb99997cee7987bacb7045. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEZC62400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05803a18c6c4534f971237f7da5837ed0e1218c12acfe90cc56caba93a3ff4eb. 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/DEZC62402619.