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 0xe1af550537c8b4a71c0740d030cfdfedc3a9d0738174130849dde374cf8b34e3. 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/7950492e-15d2-4bc4-9c32-089e17b66f72.json and https://artists.proofprofile.net/proofs/artist/7950492e-15d2-4bc4-9c32-089e17b66f72.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 0xb4adcff558cfdb1e1a78db51725fca458a82fd3305d8748bd672d46af57c15ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PL3B02300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ec584e4b80d3c08c0a9bcf3483fcb71e9205c8d55586ada28e3a35c8b52dea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLS282200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69610c974c9bf1aa42e1b0d26379a7876f0d0c057c5c7af1ead06bcb75eb38ff. 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/PLS282200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a89e9d464a9d279dc0a5018dfbf3f12d0052ba95eb0bc6108fc5bed94c0205. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLS282200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa46086e7944bc9f798c08c17dd9fd5711ffe202eaf0a0199549f4e2a54d56d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PL2DY2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fc71beda0c20ee6fc50aa6cc37ae33ba23a9ff5418a94ee5d84ee910b1d953. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLS282300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aafdf2302f981bdd1956d07ec52d77e02520bd7b9ba273773d22c35ab88dda7. 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/PLJ921800131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05467526cc2c2c8ad99b3f84d710109235a007db30b786daea9e7ecd683e76. 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/PLS281800382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69610c974c9bf1aa42e1b0d26379a7876f0d0c057c5c7af1ead06bcb75eb38ff. 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/PLS282200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a89e9d464a9d279dc0a5018dfbf3f12d0052ba95eb0bc6108fc5bed94c0205. 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/PLS282200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742362171a1d17aa3b9cc7c4fe71ac368bfdf5938d5238f6702f7c0f49ac9365. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccf181dc6fedd3b9ba4e64ec14890d493f31b67f03fc0c9d7b72058cf0a4c24. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PL2DY2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3782e32a9100a65525b8923f9863f5052339997c15efd6374692df3290b61029. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLUM72200707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646fbca0fc42c285fd2ac165675af44ddffbcced50ed00b3832d9ce5032b47a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de857cfafef6d4e7968a026be57b4766d1b7d5fd3f1cf6870dbe23281bcb4d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934a08a99eb5759beeede896dac75045a26397c81d5b77cb935b9c4621e81df4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65d7902c07729f492b3b125e9a792259c4d150c8daca5c604324289c78db812. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PL2DY2200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7fa0de2fd5ece074e8d8d57ab903d8b6800b4ad09ac11f25c85016ce378441. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc972ecb62f28ab8f7bb1d11e87d520b10819608a1f702a0238f648f217aa57. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5968279095dc64879fd724252f01ad41239f6660be98710475e09e27e1afdb8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200046.