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 0x297108147a0f9356e74c6a17a2065b51d590665a5bf9d6cf9106f14ec074e722. 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/cdf63065-7139-4412-967c-a63d0c09383b.json and https://artists.proofprofile.net/proofs/artist/cdf63065-7139-4412-967c-a63d0c09383b.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 0x40f8c278c611a90c212fcb12767349f2f24940485aa009ec703361bc8f5428cd. 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/PLV071800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2aa2785a455559663b20c6900b756654a968adf15357c4ec79518b82d70151. 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/PLV071800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc27646055ae1b4d08e6c22227deae1721de6b3f6422d9df60db9b7af57be8d8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/PLV071800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee60e4a6b78305458760ce28f5355306527dfdda2843918c5f1e4b05a70ff14. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLV071800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf910c57136a06c06d7eaabb8250f8888b3829f40db90c19bca45933330131a1d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLV071800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861c3c1e80497230bfecf24f1a8e18845f540414af0ccf59d0b0f8aae7929778. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLG251200539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53099a1b4ba03cbf22b3440b0c5fa19d24c57fc9ac2df04cca4660560c1d65b. 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/PLG251200540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9ea566ad3df92a0cc542739e17a5276170d7d8a8b441598b2c3b7233f4ef2. 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/PLG251200542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd810858f4079b57b3238befbe2635ec02f55f30e6f92609dcac4cc2bb5f99aff. 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/PLG251200543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10f6d0cd513fe22ad0a1453e13db4a2bdf935050102d4ace08e4e83f559899a. 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/PLG251200545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82580fa854e5cff87cf49eb26df387089e69b5ec75636ed09ad93ab6d6adb50. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/PLG251200546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8089cd6f653a5065a5c02b44caf362cc0f2369485ad37c8adad110570fed833. 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/PLG251500154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11c69aff14e9d5735c4365edf7505f7c64251a37f00ac4a0d404d8220b9a6f9. 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/PLG251500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f28e6edd01c005171dbc168581defa6dfd9da3e41acc4992bc783ea1cf158f0. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:44:46Z), 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/PLG251500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388f33173adf80f72890563ba58c12b01c2ce8632c7d3d7bb38f17fb01e2ed11. 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/PLG251500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a34f90250434dac830e511da42680554675e28696a5aa6d397f43468e38ff3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLV071800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e2b3f6dcba941a463675eef5d7acef44f858a9c7ba0277effc860c1a1f6c20. 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/PLV071800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13942b122057357666bb8ab0a282e03b98ee18868d0b70579398f542173021df. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/PLV071800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a265bb988b31076d619144bb0fe18e1524f3e52591e9cfae0ca6b7d034663a2. 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/PLV071800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b291ac8e3acd190d8aec85a434a5f80c9042b80f3a7c1cff4423c947a142c7. 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/PLT521600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cb6b4c617fb88204925661feb0dafbfd7ff8465b6fd50aedd16c288c1b6b5d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/PLT521600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc04baa464c6acd804333f72bb6c33b25a2ad9458cc57a27950bd368169d3f22. 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/PLT521600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0139ab539fd0382d77435b4380b0645fc5bb61af06e81fe817279b4fe6d4ce. 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/PLT521600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d597005d543024dc108f1520a9d1aeaa5d5b89d642fb9ac1e13feb983b8359d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:38:31Z), 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/PLT521600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e1a9e607a0a4d6c715383b09c0a64cab8bb5f1331b62471b42572d919e5675. 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/PLT521600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1869bf5974507ef677fb35e4434495c8ee646bdd00bf01e83afc1d2879b1808. 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/PLT521600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74c93e04ccae8a55246511ebfee821eec096553d977c0d771ca5df32047f689. 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/PLG251700666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e23fcb82f357beb1c6392eceae4e55e01a8a70974f9ecb0d10bbfa8fa7cc54. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PLG251700669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22caed2e6761b694bd406b0dc50588ce1b3003804a45d43e32993d81e0d139f0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PLG251700670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91ded86217c571b6456bab1d57975c767a0354f47af9edfe2f402061e37648c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLG251700672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d6f6753ec46b4889055b8faab835dd46301adf7f5d6da82f3d69cbe26a79da. 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/PL7A32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fabe0c616fef913960bb57fd003826b63c05e3b6fab57095b4952ff492f2f9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PL7A32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918f1c7a6e4626bd3c84c6f2fc418eabdab9be12ef1fe8d6fe89a56edcf14e06. 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/PL7A32300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dd2176023698b533f5698d64dee0d8feb36e940f98cd7de49de19aceb21495. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:26:20Z), 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/PL7A32300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fd0e8bd3cc98146eebc0c61d30cebd220e299b85dd6feb4da39b45012ba075. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PL7A32300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54cf9a6927d8d0711ea27025f750d6a7dca6fa68059d0fb6f941f1a3cc2de48. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:58Z), 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/PL7A32300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41bee1124d8fe76dbbba8075110f8ca37d61b0af4aa9cf799720c746a92f572. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:24Z), 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/PL7A32300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32453f7a64156dbf6816b114d32b88fbdbf4d787614657f73677455a263ac133. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:45Z), 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/PL7A32300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33002e31465aa357129637568eb8527f5d89c7ef3dcb9bebe30dcb958c86eea. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/PL7A32300010.