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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dfa2aa3cbec7505558cf6df5ce17869db307778e66eb28221499181bf3e902. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7eff6f0-81d8-4388-9cdd-f6a493bd7902.json and https://artists.proofprofile.net/proofs/artist/a7eff6f0-81d8-4388-9cdd-f6a493bd7902.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e1ab1f88a3869331abc4e574ff10eb7cd8a8e92a3ebe8351e512e6582d551c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZES92309422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f680d0d246e0e6eac2b392de65457db92235559b313559b27d3b0b1f57659c1. 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/QZHNA2294062.
Plata y salud (Juan Jordan & Mr. Cashanova Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38c355aa5b6944193207b1ae98e70f94a9d38eb26d18f897c8c6ab96a3042e8. 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/ESA011835075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b5f7deeca35900c371e15c77edf8b973f64cdce20c20e7573bb9c754974c72. 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/ESA012024282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9070702e8a754959103f4cc49d1aa83efe4e41d5a48fda68f58480f17ff491. 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/ESA012042755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b0f010beda4dcf706824faa1c4d776a23d0b8198b5646a747e71f57b686fae. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ESA012042757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ccc84feef399b40b5cc5874b5d92b588d7461d6cbb70bb9767288b2a657abd. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ESA012042754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363de02a2cd65566f99ac362bf30512aa0ece05f9bb92e006b66e22acfe77f0f. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ESA012042760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9da3be29950baa530c6fd7235aabd5fe5972a714d87597f81d16236a3f59ad. 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/ES64E2202310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e46b6855e9f4b2033af3120a0ed10b17835d03129bc323c8508e589742b80b9. 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/ESA011732118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7791574164805a14de92bd029009fe3acf872ec607367e7d84f29b09d493b772. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ESA011887999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14c6ec4e78d65246b3d84d20197bfef97aa09f5acfbcfd17df8f7a6a9b8f587. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ESA012053467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56fcf5c2ddfcd588c8ddddada9d6c226abbdb8df0fab3c24c524bc330a6f563. 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/ESA012015576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0486485f2c621ddbc091c436a5992602d91be15d9721787a55da758446e671df. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ESA011925692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac1cda4eea70a0085ef677bb395013e1460805650641bbaeab1fd48be3bfa4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES6081741601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d777d24f4a025e8a68cf985147a059d6929694e689488bb08b824b4d38b1748. 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/ES6081940101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60abdfb88831b83efb680f300d88ddbfc598fb1e27f8a1f0b2635c398f1fc27. 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/ES6081940104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70709a4a32ba1e13fba8487efcd58bdcddcd71e19ba5f2c531091cc5a1f878d7. 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/QMFME1925021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e3c56a251c1682e11b39eda9744f6edf5f507f1385f7e810e944d83e54a387. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QMBZ91954520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37c9ef29d90bdb613afb6b359a95d6c9d3715612e5990a73e21e5a748eb869b. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QM6P41921780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c69c603879a778f091bb3354011bcb47e87e6ab4aecde8ddefe827c507b2205. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QMFME1925038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e17c11e9e1e81de3bdd76ce9ec63106bd03f13bd1af5ad3338ed0c3280178dd. 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/QMFME1925040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078106b439a4df39db72649b90b2833d0f3d226dad15c12f6982a53f8e66a90b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMFME1925059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8a178735398c6e0d14950f2e73aa6362a483ddd2bb59c1243a365d5375e199. 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/QMFME1925088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06dcbc1dba220adccd1272963c98803a58829ebc79b1c24f8f50f64ec1eaa22. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMFME1925109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9375fc923df4033c83305a102c31e2b5b84937adccf2b833ad0456c24da1aaea. 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/QMFME1924978.