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 0x4bc94b0d0fee90f57ac7d6b1369513d1a51d833297d276f466652b6a76e6ea3c. 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/6da023d5-5ab6-4f87-a5a0-85e90962920e.json and https://artists.proofprofile.net/proofs/artist/6da023d5-5ab6-4f87-a5a0-85e90962920e.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 0xd0ffe411add4276f951325db5e86a7068a908860897040d52e0627ef21865d3e. 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/FRR642101079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416e134cce790c867c35500e8ec9fb99897baa4cc100af5a50a9b3f3f218a108. 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/FRR642100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee9a68936ad61e3af8c3a1fd6026f5cefca918c044578b049f49a86dae3d512. 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/FR9W12332562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8d534e101cf51470e59022db9828e4b528e6ae81edec511bb6b17d9ad2868b. 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/FR5T42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8d534e101cf51470e59022db9828e4b528e6ae81edec511bb6b17d9ad2868b. 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/FR5T42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbe58295c2d5c219ca61851390836a7d2289d884c6e84ef0ba1dc75244c1da0. 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/FR2X41934578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9b13fe728de1b2ec70c8b42fce75069d56855f5b5e8e6d7d55547818a7a907. 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/FRX762412743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd681a16d8dc07581acbe07ea8aff7e4687c98ed9f14a982701364d49ab74575. 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/FRX762412745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3179eb2eba6e607d04d94f7545b35a30cd47fff36f0a664bb8cf407e92c204. 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/FRX762412746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ba40be981fa1bb2478f1d0bbb94bfaf201e1729eb7f83862fb66399d36afce. 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/FRX762412747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50702d7834f8f259f0a0e9720d649bf1ecee7dc3e27014d0c6da558fc6c17de9. 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/FRX762412749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17591f1163f50ddcdc035a66a7d1bc4f9b20d6f1c6341e08f51463badc7c6ce3. 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/FRX762412750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b727a589718946ade8e8247e0d42332e096cd5d6c024723df4ab00509d0d4d5. 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/FRX762412753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8724e5b84d0a2b893199e94230eec541c430041bdb066a75ca6152dba01199e9. 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/FR9W12129042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0ff23edfcc2ddf8f893acf243bb6461c0e788edc7c79376a460abb146c4dd2. 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/FR9W12129043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7336410e576082e943a3e4b968ad9a4c510f73e8124a4db47b7dd7761c63e74e. 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/FR9W12129044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd60ddfba2b184951b6757a1057803fb0aad5ed33e96da560ab43c7dd1531e0. 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/FR9W12129046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d87a3d49a7e01f7b62f37b8841ddb86bbe9c668297165ed828f3faa18ef73c. 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/FR9W12129047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bef64d9a33b537de679bdb3d032a090e50e1ce8d15d088096189c14a242bc0. 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/FR9W12129048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6498edf8e46676bbaf3e72bc5bbc98a94e2fa74a361db52dd2ac6711b4dee3d5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR9W12243537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43415b801176e78857fb7c485b73cc817ed372aa0fc0dfc79a60e706cd9d2539. 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/FR9W12243538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98379e96ce84c3bd773f2eb21c4de70c85e6830301fd3fa87864dca086034ce. 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/FRX282336494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f005c5e328e1e78d66b34dceee1841bc31e9bb61762842a4be19d1c24bcac6. 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/FRX282336495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ba40be981fa1bb2478f1d0bbb94bfaf201e1729eb7f83862fb66399d36afce. 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/FRX762412747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2274fbf34205daf09ce87409a709b30fd4d9235fcf32aa454e1c89e12e1166fd. 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/FR1Z42020351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca821e7efc6b31befcd04bd735ee18184a5369677b46ead952aa708a759b99a1. 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/FR9W12037828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf789ba9986b06460f8f393abc32541082902956cde80915a938781ed1c331676. 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/FR9W12307136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd24af7187c54c76f11b9132a79a3fce1227a62e3991aab3bbe7b5871881f5f8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:14:17Z), 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/FRR642001684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a0b10560cb39d025d23ae2acd92c10794b9d5477870a97a9f982234dbaa431. 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/FR9W12250221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6498edf8e46676bbaf3e72bc5bbc98a94e2fa74a361db52dd2ac6711b4dee3d5. 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/FR9W12243537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ace97637de7ab68c51a12cb7e6e7697aa7a846cb584baf09b0553f533b6019. 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/FR9W12463179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b78ea27e9cf5f287e194476eebe2025da65a8f9ec52346e62cd523e49c3cff. 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/FR9W12453213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe242e4503ef1a4337dbf002863e2c89074ebb49ea109aad5e57c5bd3e216d7b9. 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/FR9W12433765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d8640099f94d051d4442aba2c2df3cf7de9ad02d9a0dfa2b1cacc93be5eca6. 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/FR9W12447527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416e134cce790c867c35500e8ec9fb99897baa4cc100af5a50a9b3f3f218a108. 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/FRR642100171.