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 0x965ae68deb8ffff1fa323f3001b78eec9cbd2adc34bc0f49b620acd8b3787963. 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/d29754ee-6be2-440a-888d-b55f36cbd56f.json and https://artists.proofprofile.net/proofs/artist/d29754ee-6be2-440a-888d-b55f36cbd56f.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 0x1321f1df182ff21ebb1504a28ba94055f30aa955d1d8c4b719173148a5a7c302. 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/TCJPJ1931017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064f7777258db20e1aea1af5528a18a24d24361d06e3e2bd4710417aa77814f8. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCJPK1908720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf42f82e107864d3e2cce51beaa1c189bf69e27102efd53bd590677d9f584fc1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPL2097312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a7d2d6b0a7cd95f6da89da2214b1b7c04d78ff798f397ff2cc6c0a0a0ae4cc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPN2169338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b58c635d28175977bc3564325409c55c8524de8fbe1ae99c342710131433d7c. 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/TCJPN2196347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfef363c7f5d1ed9dd5bf797d296b3445991c79d723be1859aa221301f024307. 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/JPV502100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa78415a3ca65eae45df51e377197e71c61ca03b51fd87a9178be9cbc246aed7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:11:06Z), 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/JPV502100476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d48a00057c955f0c1e9e780ce48282642996c10ec5f366bc7018ea38008f8. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:56Z), 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/JPV502100478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc21090ca7042fda4e6f0be3b6de512bcdcb475f9fb87260d8fe706319a35d0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:02Z), 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/JPV502100479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f93a5ab378fe748a1310b244b6cf0481ba332d44830dbc688acd8b3d8f05a62. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/JPV502100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7796b9de6d8465c91a19f7f48e72cde966f110607bf802d9f2fe9149ca45784. 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/JPV502200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b94496422bc4b270838ecbf12bcc28e6294f3988fc6d841a9e9a55431db4350. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPV502200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38104d0f638e88a947b812f768bfe9cb17eb4ef1e2f2afe00d101018ac8903b9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPV502200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f3a952f5322721f2c7246a197853a8147ba316257a095c98355af99646d02f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:29Z), 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/JPV502200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d95be6b3baf5bf022a4ee564253f539de48c6f1eedc6dd81f84579b97f8133. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPV502200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d2ab4cb9d363661dcdc253436e0f6aa73cb621cb74bdb6f12b371c032ecfe8. 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/JPV502200399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf559318e8e0de65580c5f30015393947106f93ac23668431df2156a5e7806f52. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:15Z), 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/JPV502200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1c580018038113effef27e40095033f3b9fa33e5c472a30c342aa0fa3a2ebc. 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/JPV502200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed97a8259f95f5fb638d2d0b10a8ef4eabbcb7dec635397436c2eb52d25aa00c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JP92N2325676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559eeeb206b88ff796ae802bd74a26bcfc506cd1f6757f48c51a14ab50064ac3. 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/JP92N2325677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cfafd1fc70c54b79abd344667fc9596b9c9af56005fb23912abafd78e7dab0. 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/JP92N2325679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1940c04cf1d193cd9d0680bc8454271cf97603cbe17af2360ca422298d689d87. 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/JPU902305477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730ef3bd4faaf50505f9362be9c236a178ffcd7b252ac88186b04ba6a058593f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPU902400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc721a8f20da759d734f22e726aa2c3cd1c19bb6c3db838e569b6c4254c79b599. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPU902400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20673233197d392d55aaf1e041128de0297bcb809cb7089eb389152d077c9238. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:03:15Z), 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/JPU902400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f5f443d9ff9791910da7854505a526d6f155e274761fac4eeeca69a1b7fc3a. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:07:27Z), 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/JPU902400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9a3bfd0b28b60de5b82f67aad05be7c66a6918eea2d10ce08bace5d0436acf. 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/JPU902400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3ae02b74456300b30ab11d6acec8f06b7efcf8734d550054672757a280eee8. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/JPU902400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a0c959df2ffc434ab13825c4c859af15a1eda304a252dd10601fc2eb1c44ca. 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/JPU902400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cee348dcfe610a9e334a5a8614e1da0e4bc629083b95dd7f42b75bba7f89fb9. 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/JPU902400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730ef3bd4faaf50505f9362be9c236a178ffcd7b252ac88186b04ba6a058593f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:55Z), 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/JPU902400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c978fbcb597b05fd4b7427a5029dd827b4c92af977fc835d991c920f51ae070. 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/JPU902305025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0879aefdfa82ed442a0734ff224d89cd223347ca5b2da7229cd269bcc39c79. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:00:52Z), 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/JPU902400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3021784ff9621e9379bbc8abd08f8f77fdd42491c529424b4a666351adbfa8cf. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/JPU902400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d966af24a9f1d3bda04c6a785131d8ba49d78462ebb5dc2aab145e18053e7b0. 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/JPU902403240.