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 0x623b0e5e372c6be2432fd51ee6935fe981c6e6f7f8daf5581484a946cbba8842. 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/958c63f1-3348-4380-9638-57a773df7067.json and https://artists.proofprofile.net/proofs/artist/958c63f1-3348-4380-9638-57a773df7067.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 0x8d3bcb529dff662066a57619a896b0829ef48b4be20826c1616c05af9a36dee9. 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/TCAEY2050129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dcce0ced8e5f6e2030f2f2021d481922f91566af7bba2f38aeed323801e95e. 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/TCAEY2050416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf842abf8302a18050821c453da49785ba61e2f0b36e92786b6b95e34942a5. 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/TCAEU2031638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27fb9052b4b5592f5752d23e010b89b08e80251265c8a96d0cb93544871abe4. 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/TCAEY2050279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddcf4441b7111245b8eb0042eb49b1309b9b3572bc58f89bfc1ce3e84b26b12. 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/TCAEY2050298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e079633637f0656c4cf6bf2f8b4e18ae40fdd786deeadea105cad3a9bf05bb. 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/TCAEY2050319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c0cf13d361342e98b0ed419f9eb6cb5e7d8301c1473d664e0beb440e0c7613. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAEY2050350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda6889af968a52af212e9e75293a1fdf5c7bd79061ff59b8cbf87489853583d. 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/US23A1591664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4ea781c8b9cea4d1e10baae20efe155d0a3b0f2199148d2a9d220aa766b5da. 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/US23A1584631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eba5f8878d2100bad868cfdb257e446e2c7e78d95f54e0b22df2351f3fcfc2a. 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/US23A1569465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46408728caa95680b8dfd1818304424b8eb51801a1c3fc4fc57372661b445054. 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/US23A1568788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b0d88acd268833d531660a129e96af99f3b8d264d1aa202fc419a6eb262c99. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23A1557413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf83634dfba788c234d6510ff64660453fa98a38a2bb99e8fc5f8a6fcfcb69d. 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/QZPLS2136482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192522a4131aaeaa92cd2611dccd9f9db22c0dd12d34712750d2bd69b4eb2499. 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/QZNWT2150356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345858071a90f5ea126b9f7b314d418c516ce39eaf82ff4bdba4565e530e9803. 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/QZK6P2187163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d09d8838deca3581b719f8ba4aec25cad2f5100c4b5252033d023a6280de5e. 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/QZHN92162163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7580b1c339184772f39a77473337302371140e178b54dc0f47c3e9134eba400d. 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/QZHN52141625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884d04123a7bb3eb5716779e93f0536d5e041878f1debf4e56a78814387ada5f. 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/QZHN42111399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5c85706b7be949dc11549b082a64d4924e720af95506980bf727854a020d2d. 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/QZES62118983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2605f6c0d6fe21a59d851dfdd0d631b0031e0af80d1cb6728414d7c5a1b932a7. 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/QZES62110804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bae0d34826328dc5aa4e69202de44e3008ac1add67f7ef7d490ec8a92a3f5b. 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/QZDA42141748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8bd68d69b04b74bea063be6c182c93e2dc4cd81b3b950b9afd6d65e42cf0b3. 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/QZFZ32139386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e97f0747ff50d9059c7dda54f6772bcae706807a1a4efc8cf45a0f7ed250d5. 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/QZNWT2001819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf842abf8302a18050821c453da49785ba61e2f0b36e92786b6b95e34942a5. 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/TCAEU2031638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12fc9aa4bb3415629a760a44b3a5058bc3774adedc1fc7b536d86817bbf6078. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAES2079716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cd7822a3ca1b1fac6e1a4e091084a81b1eb47ba4ba618bb6a99b553cba1564. 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/TCAEO1947776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3014b1b657a70e2cf13b71ef803e2e14e0990c5e3226d4ef0d0c57ab3447c5d9. 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/TCAEN1925375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fc7db6060bda046756dd137dbc1e0ee1c441c711b0d1e35341bead4863f042. 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/CH7811101209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634cd894aceb77dcaf76e28749330b39784beab154548d792acbb790e118fba2. 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/CH7811101208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d441fb12f4260639710a4df40ac25de3691c5a0791f39b8cfc77764f8ac55d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEE1901447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df33b1a61afe68878e7878f51f2d13c4991b3506beee858081dfd006faf6acb. 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/TCAEC1917088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae84503cf248893cff5753848ea5396576470931d17cdf3c1a7b608403d846e5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAEA1971938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6831efa2576d4f0c6f3d15cf8ab82deed4a631a5a2cf002bc6f72de8dcb932. 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/SEYOK1836777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4ecbc711e49d779158756905ce9a7481f254d1a2559812a36670f681cecb14. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2295387.