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 0x9bf6e2098be4237e9440926853af220a3c7323859d5b937d280bf344eda72944. 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/a17368f2-de7a-453b-bad6-29f5612dcbb1.json and https://artists.proofprofile.net/proofs/artist/a17368f2-de7a-453b-bad6-29f5612dcbb1.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 0x18a02d08b072e0f3effaf8aa0416ad7911c4679ffb37395df722e254ab3c2eac. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/AEA0Q2068222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081c971229697a8ddc7e4dbe492490e07be5eedeb29d67996472fc14c329d1d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUA1H2166269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fda9b40ac8580202d6986efb963e185254398a0844a0f5c1fb5bf2ea221641c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:48Z), 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/AEA0Q2116506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dbbcb4b625b0b2ac42b7a2a829c6529edd75d2445acdd221e3586b5cb4ce4c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA0Q2116508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ba7242bf3b21b469b8ec653d4102e13eef629b884f2badcd106271a0b631eb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AEA0Q2168053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03dadcac69eb811fa8baed8205969a2321a553e178d79e6035b4e0c64e6ffcc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZS632104839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c4c6cde78ed0d37d78f740150801988ff499fd92da6ce5b2fb67d6a5f78ad. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFMF2101521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda365c9d3b40ae725e298d764fccc82fab39ccaec0420d89aa04050f509f93b3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMDA62132727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb476326e9f1866a54891471664e40f8b7a0d320b7033243b0363efa11cb1d1c7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMDA72135005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5deafd019b0334c8466714f5defa0fc550a5bb51e01f846b1f4cffea676cdf. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/RUA1D2250784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c3bf32fbc980a70a09dc0fc84ebb325bfb86801d988e195e14fd78d5350150. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA1D2252733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a3859ff42002e56f483178b457f601dd9d9b045023a4f4a8351a3a8bc443a4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMFMF2219679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265d114a288fe482cbf892ace8f7e732b696f2b4c77dc7f911ab6c6397325a7b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:59Z), 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/QM4TX2326465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5047d447ec7a3dd078aa4e8b1fa8aef038d3978dd73cadd1adf0775da0d3ea. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6N22316472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2315c75677896cac9116eb45d6b1161003feb3baea76df094c42d8db49e345. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM6P42334962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8afd5e1d14bf13d2de99e6deaa9dfa6824af308d0fce53fdde3cacf27c7c3ce. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUAGT2351411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d69366d6ae1f7302c1f667dd068cd0b935e26293d9d4456dfd876755dfce588. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/RUAGT2351413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cc1d1e88726abf547ed237124810c37d5247d5f815a910a621ee82135bbd73. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/RUAGT2351415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5243911c6e26d71acbbb15bb56209276f60e59d1c9e15eeeaf117f80595c6b. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QM4TX2423028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd36667502e53edde0ec9ddc0eaaa35c3913304ed798265f71a96ffaa72f5193. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QM6N22459165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8ca7b65c85c636fe9bd59f7959b5b9875e14b83fe6e284514d5bedef1f62e5. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:44Z), 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/RUAGT2434834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90bb18b9f7035e7cb1e008071de67217d5a69ab120ac347894d850597ee9175. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUAGT2434784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017bfa0aa6a3466e74904dd94057f02d7610cf44981bea2e8b674e786df4d014. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUAGT2481019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4043292f591380dca25760f2e5c853bb9aa8db23ab4069b18bf912438155186e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/RUAGT2487701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0903c80357425a72d9c0c9fe669c41019d90003bddc9c93f68e175dc07890067. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUAGT2487610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c47c64f6247bca3cbeb35975b07ecddd927ea0e84a4ff48094a16875d54fdca. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/RUA1D2550008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ecf4ce3a3e828cf95910e5b7ff9e132c71d2f333dca858f6519ad9b4c28329. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D2587879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cfbda022b8e826c3ea13d2df4be0c9aab597a1cc2616ff3a5a5101dc9d12b9. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUA1D2590749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1db70261841d79fcede1a389c127b1cbe40bea1b6dfa38f8c7dabb748ea4b4f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA1D2591759.