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 0x379b3da0bd915c750002ace75481eff1a774abff0f67ceea6c01f10922022bf8. 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/380822a5-4a20-4535-ae26-8045bbe53327.json and https://artists.proofprofile.net/proofs/artist/380822a5-4a20-4535-ae26-8045bbe53327.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 0x2ade00469f47bdb9071534a425ecaab24d237fcada19879f720fcb2991be3c7e. 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/QZDA42028070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ef4db3a3e6a75cfe430f5c19f3c31f1572151ab451557b7d7edc20e9609bb7. 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/QZES51879055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc90420a696d536994f2a497d3fc2108f85023af1b1edbec5536b0d974a978c. 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/QM2PV1852288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad07345cb6a546b837113c7a7009fd229ef66be2e82f0ed70878fdefd557afbd. 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/QZTAW2230488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba14ae87f0bc6829a8295cd80e980c06bd5b843d18bd6700cea0c527fe7d6d9. 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/QZFYX2432278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b91dee792419a5d95f162ea7914bc02d192b6e936a5231c4ab0991b32a6b6. 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/QZNWY2338604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b2f9ccccdd1ab8b9b7d33eb063681477a5559015f5983dab3bcf28fef6d22b. 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/DEZC62114571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ac1417c82469efa897924135edb798b68f5bff77779b18ce62ec102e48198f. 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/DEZC62114574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655c11adcf2108978e271524d2ba4e0fab135864bd8fbaec004ed5f58a792fda. 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/DEZC62114576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8919b4a9df9f371c6281be7c96eb40116a9d3e6b540f8f9c87c84bdb6cbc042d. 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/DEZC62114572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c9eaf38fa0aab60caeb0c1142dfbba29bd2ec1c63524806cee2941963e249a. 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/DEZC62114575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d04a348cbb3348e8e0c95e6ee4c5fcaead1b1bb31bc34b77b5b253436f0a1cc. 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/CH7812185291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2063c98b31f93db8940f2d2669a306908887e8d850bae48fa43e1a1cf77ba5a5. 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/CH7812185293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5bf2cf21def00ffe6a43369287623e181eaf407dc271fa2cfa99150b2df08a. 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/CH7812185295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa313363c1e7a1122de814af02ea081a6a10876c1abec760addaecdfed6306263. 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/CH7812185292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d04a348cbb3348e8e0c95e6ee4c5fcaead1b1bb31bc34b77b5b253436f0a1cc. 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/CH7812185291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa889f54cec6b26f08bf6a1b2f6b3600979b843218cf0bd7723214144cc3a3d. 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/CH7812069699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddbe04bf6e9b83606ce0944b008cfa5dbbf1d9656d0561f331b517b11ba39ec. 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/CH7812069697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e473d1650facc5b6b8bb94ee83cbd5132b5108c40ed8e4cd4a0ec1fcf08ea76. 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/CH7812069688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829012532e1397087844ee35cbad1511dc2174d334546b888ec142b5ce09cc7a. 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/QZK6Q2097941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788dba1353afe168a1d367f43f9e24f38a0cce0cf963bd8ba8c5089d40b92bb1. 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/QZHN72098815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd560c30ccd7c8ae87560fee0c2ae07e7add2992d2ed7543151590b98c0889ba. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/US3DF1988188.