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 0xc152628eed6bcae8991279d3f54bae6bbbae6ea5c7c087d49058275388c809c6. 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/f39963ab-f246-4f6f-9dd2-a623639c4fa8.json and https://artists.proofprofile.net/proofs/artist/f39963ab-f246-4f6f-9dd2-a623639c4fa8.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 0x1994686c752d293dee5fdcc6f6bffaba36285f1739da633044c211df8a0f1c65. 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/NOHLX1650010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d18e97f5ac397a7810a6158751d3031ac740da257367c49fd76bd2d3fde749e. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/NOHLX1650020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e532e9440d81b3fa424d22706e5c5b829ee30d241d1694e73b1e20dd20d26f9. 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/NOHLX1650030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ff1dbf2e6f99ba62c96281e6a9ab63c6bd35f48f91690ac0be929800aed373. 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/NOHLX1869010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbf34f0b5cbb020f74393015edf410919d8ed1461bf3ba85b88c5afcb846c90. 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/NOHLX1869030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec17df9d695ade0ce2d169a06c2371d50c1b996cb8011eed9f93550b6e80045d. 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/NOHLX1869040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc705102cc5c7e5ac4be401d3a1f6ebc76827adb66619a84903f216d7719aa231. 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/NOHLX1869050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1481480a01834d113a435f9460b238b6e373846ed6c27cb4296b050beccc87. 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/NOHLX1987010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70039532b55bb8704986d9e71c9d0a6199fd40081efc42d00df772ea3d5d8d32. 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/NOHLX1987040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1374be7c3353d5792f9a007d8fbe464913148513f23eb59480b59d26dfa5fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOHLX1987050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05874fd2622ad55754978823fb0c7c5ca028418a8515a8f440a728e5846b965a. 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/NOHLX1987060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7eb185ce0d6ff22e5c2ee0854d04dace7c4223f5b3fd2b05fe17473ab73c1a. 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/NOHLX2095010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa090b21acfa6fb28a93714f76ff5d9b160fb3cb38dad13f6e9fef4ef710923be. 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/NOHLX2095020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a8edbf7100009993cc756d78ae3d17102819459b1423ea3b9c3e01793150e9. 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/NOHLX2095030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123d79a3b6e3697416fcce4df467f0afee67cc648c6947df53e897b984a11321. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:08:35Z), 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/NOHLX2095050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e9c22f905965e5d45d999d9756a33fca1f43c16ae2c76a6f92e531a3c0ec1b. 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/NOHLX2095060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39f9fcc7fc0c9a963cd7b7d3b490f416e19fa5578b0b85f76d36342ad4bd21e. 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/NOHLX2095080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff16259c2964cc855bdf58608dedbd31468fc55892bb5ca0585282f3a1b57e48. 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/NOHLX2095090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b382a0d8953810593b03d91484bf431f255df50793b3e75fd7b66a28c7873ee. 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/NOHLX2095120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe047441e7a1ca0acb065b394e366ac323471c67f3d74bfb319dbf95e34d92259. 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/NOHLX2095130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7eb185ce0d6ff22e5c2ee0854d04dace7c4223f5b3fd2b05fe17473ab73c1a. 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/NOHLX2095010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485eda23c4a86f89a2536b9251a90aa4e997fa1efc81b06990bf8726181f6ed5. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:32Z), 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/NOHLX2095100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d5e1957dc8058011448f593826eb8864428357fdd18a0d221a130e300ebec9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NOHLX2451020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe388b65760927c8a9dc898d46796fa26ac31cb9a14b215babc39d43ad8c61024. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NOHLX2451040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa809fad4bf5c1bc40877d4dd059358af7045b9628e18d226c11db310661e50af. 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/NOHLX2451010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d5e1957dc8058011448f593826eb8864428357fdd18a0d221a130e300ebec9. 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/NOHLX2451020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd475bc19ce27f21da867dfe033bf8b54c9afe078d79dd4bb8170d98e52a67. 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/NOHLX2451030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe388b65760927c8a9dc898d46796fa26ac31cb9a14b215babc39d43ad8c61024. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOHLX2451040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5626c2d2ab7dbc77070dead873ab982dc6c2870a698ed2dd3fdafbb1f5d3ea5d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NOHLX2451050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f19425d4607252962d0226e2becb8d014641c38732f87731e51f84b1acad11a. 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/NOHLX2451060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97ae58dd113fa5a381ec81b0dd2418a0574ee3d939e5e8d3d7b4ecfa90d0269. 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/NOHLX2451070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7d502a04198425cfae8b399ab7dfcbf2af8dbbf2f9d4b8f7352e9d36dc7dad. 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/NOHLX2451080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6921a62b8763369bb14f91c93d368a013f77fe65a19e22b4baab3497153bd2c8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:49:28Z), 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/NOHLX2451090.