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 0x79ad0f26f15079a5602d235b0ac1eec5107aafd63078d4ef1ccd1fc0b8a76d33. 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/177e91c9-76ec-439c-9c92-6f743969d74c.json and https://artists.proofprofile.net/proofs/artist/177e91c9-76ec-439c-9c92-6f743969d74c.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 0xcf00731b7d055c80143d7a63c2183a29a143b59ea225db18c2c59cb6fc43c7a7. 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/GB6TC1500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112514f9f18b701be877ae5f1ab072baacc1f9908c841adebf7a03cb9cd1a4e4. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GB6TC1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b156536d8df1852feece1f54c19bdcfb8ce78a47413cd198d402fc178f991a9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:13Z), 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/NLCK41043610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32abd1431db7d59c5776f50a863fc737ca36f77b92fecc4c051873349395cd27. 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/BEN582000540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9362a1df93757d9d33430945aba9f07fec3aef4496b7d07d7957040108e50429. 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/NLCK42212539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb79ab75535ea41c05a1909d4ec72d08daae1fdb19a1972b4465f7fd66523b28. 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/NLCK42224889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207f971076fea5c4caf7ab77cdef7a0d48f5d3a6f43ccac0e085566424c892b2. 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/NLCK42236143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347fcbad6fa7ec06671bd63727abb0a74902341c58cd1837482fd9c5088e1aaf. 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/NLCK41094543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430548b3949d3e469f8ee40889859cf2a09aea826f30d608e421a2bf635b5bb4. 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/NLCK41087668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22806eb84beddeb876d646a83480d36086eafb54b4ea491a4636211b80a2295. 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/NLCK41078919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e690b3577a580f5840deacf851408ecfa6f0de4ac888f271ca61313e985ff6e. 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/CA6D22200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22806eb84beddeb876d646a83480d36086eafb54b4ea491a4636211b80a2295. 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/NLCK41078919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e690b3577a580f5840deacf851408ecfa6f0de4ac888f271ca61313e985ff6e. 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/CA6D22200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e73c375126252849f6b68a187d5faf35b18cceaae3320311ae1d068fcd18cfd. 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/NLCK42228772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08cbc7b2e7b79ff8c64b2f9a747e3d1db70515de0eb850b632946df747a0bef. 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/NLCK41059203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a1e73db6135a36c022acae63ddba414bf1bde714e246f040f22cdff73fc237. 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/NLCK42216387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22806eb84beddeb876d646a83480d36086eafb54b4ea491a4636211b80a2295. 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/NLCK41078919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf259cfdbee4ca38bd8cb9473adcaddd58548ce21a2a09861113a188b30bd9ed6. 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/NLCK41054213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207f971076fea5c4caf7ab77cdef7a0d48f5d3a6f43ccac0e085566424c892b2. 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/NLCK42236143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617c4d1358a44a93e73d3aac04c293d9fbba3d23230a536efbb106cdf916b79c. 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/NLCK41024677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b618d97c77bf1c17f06438aa108904eaf09cc79e518c67c4ed8da4a16694430. 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/CA6D22400212.