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 0x09a311476803b1b1bc668e5569479d9bafe2f768eb5d21f833370ae65af5ca44. 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/cf2050f7-fa73-43ae-bda9-88ccfda9cc34.json and https://artists.proofprofile.net/proofs/artist/cf2050f7-fa73-43ae-bda9-88ccfda9cc34.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 0x477a99efc1ff4317036998ee7eed4b1a8a9d3e72d82dcd5b59ef7229b676679d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGD2275805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275c72a53518ed58142e3860d036474efcadda94ba73a7a44b9a95f696b16156. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAFK2137196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5d6a1b4cbae0862e13ae46fbf5426c6f1ca70870acde23541c3825f6f58d21. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:33:48Z), 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/TCAFN2199776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51572f8678594029a96d7876b593e869f654d698d80ab155730ed731037f7007. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:09Z), 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/TCAFX2167432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180f4efb6c114b114f976c1147d03358f10034fa76bbd6c8e552a64846867794. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAGD2275736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275c72a53518ed58142e3860d036474efcadda94ba73a7a44b9a95f696b16156. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAFK2137196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5d6a1b4cbae0862e13ae46fbf5426c6f1ca70870acde23541c3825f6f58d21. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:20Z), 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/TCAFN2199776.
Dying Swan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a33eca99286d5bfc2df2492377aace87fb3cd411053c997987ccced40beddb6. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/TCAHE2340531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66296adda34a3af6023818794f4d1586dccdd1ec924808ef4d423856e5a904dd. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:37:49Z), 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/TCAHS2389257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6bb00c442af7402acc0cd78336ac519798ee8dedd6f917b79a6b976ce8576. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:24:18Z), 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/TCAHU2452700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6bb00c442af7402acc0cd78336ac519798ee8dedd6f917b79a6b976ce8576. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:42:42Z), 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/TCAHU2452700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eb825ddd339af7193b32e474cab0088421bfebd457d2519ed66e0ff6391089. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PL6B02416176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66296adda34a3af6023818794f4d1586dccdd1ec924808ef4d423856e5a904dd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAHS2389257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecf1c6ba6c141c1fd01f6e65a2ebc33a333ceb6789c7f9f031ceedc9d46384d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:53Z), 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/PL6B02416179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08cf24d60548d7cf7aa87e28a01cd7b3643d86617d6f2a87354c165bc5a66f4. 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/PL44J2520196.