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 0xdd74fbaeb97b063568e2f4bf44f6c42ae39007a3433e901e12934c6ccf67cc4e. 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/cf7cb2a2-ec4c-4fe8-9746-e487b235d70b.json and https://artists.proofprofile.net/proofs/artist/cf7cb2a2-ec4c-4fe8-9746-e487b235d70b.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 0xeb7e7d5ee3ccf9661d28731e79bcafe37bb824b288f374554bef06440afaa911. 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/SEYTH1700505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe9e8746dfc4d3153edcef9248f2e288a94990fc6bf435c66ba404691ba30e. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:11:02Z), 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/SEYTH1701501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7f47346d05252c10800379d5879a96ebd06a8d023ca1e124896d28ddc74fa1. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SE5BU1857913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06f59eecc05256a7e95bed3a93ceaecd7385362009c9bff51c276f51ff4f522. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:12:20Z), 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/SE5BU1857914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff8b9f7f95fb76d15aa1c6544f9d122e965a9dbd0f1ec062ee3eece55b69cb9. 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/SEYTH1600604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456d5cc2ef2cb04a65f6be41540cdb43104d740455d0eb0b7413e2748a724970. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE6HN1966950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6485e7136070e576cddfdae3cef53caff74fec456966acd2eaa7264e8e4b5ec4. 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/SE6HN1993983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446937526218d85035a34fb4b426abe57a42eb785e73fe542a59bba8519ca179. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE5BU1972284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2855bd7492a9ccd58c09c5b18c65715bda800543a17f3ab82af2b9f7f0ac3953. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE5BU2096964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90f602c9f0fb9b9994ffed33608ef9fac10dae9450e186adcfa6ab213c581a2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:37:37Z), 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/SE5BU2057312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395ba0766f23f6cbfd5168ebe74a4f86f88c5c84c248672f8b29b1f41d24a75e. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:33:18Z), 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/SE5S62105601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ed32a24e0caab70a6123db15cfe8556acef3ed00ef65cf5dd6a8a148559bb1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5S62302801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b95b572e2c7e36972d8755fe1aa0992437abdecdf48bd4abe044cdc2faee0a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE5S62304001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3792df68183bd3fe41564d1fd6faee9102a188b3581d91ea5e96b7f787562896. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:24:07Z), 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/SE5S62404001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1b012381d5f124987f94180133293f78ede1555f0683dfc5033e4470aa24d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:18Z), 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/SE5S62405001.