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 0x1f178ea017b7ef426551840cb520c165a9091e1a6f38cb13235c4ad77311e29c. 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/60f14ce3-0683-4e34-8e97-430586f12f14.json and https://artists.proofprofile.net/proofs/artist/60f14ce3-0683-4e34-8e97-430586f12f14.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 0xa770a22a2eca31a338de10e5ee4e8e6d8d3297c347e0933c425b92c3dac1eebd. 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/TCACJ1513414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443bcbb72313c567a93ec3196edbaba7c1d592c1a7596c4b0b358de9a99cb1b6. 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/TCACA1482277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0de6599d035be27d2565ef102cc2e79e5627c0c685c908a5879498a978c7f6. 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/TCABY1482369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dbfb095f86b8f2277269d43f2e2eda7238f37dc10e3aef904192ea144be4bb. 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/TCACL1685249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c654fe53de08ea66853f5d0e1f26c398c6fefd53b86b8660b5c95b99cc3523. 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/TCACL1685250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ebe63a8375128c1748823c7d33aa77832afab835099937f55eb017f4b26954. 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/TCACL1685252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381fd8bdd43357ffda5b7226c0e73486efabb3373ab201beb880dad637b3d8b5. 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/TCABY1482368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a96e09b40e7ddf640e31c58cbe641b721b8af6d09faeeff8dbfec313229ebd8. 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/TCACL1685251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c83dedf00690b198aae331042b9baa7bb8a61bbd0d3277e9a44cd36414f67b. 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/TCACL1685253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae7aa943774a7a16fcd5301c23cb6f73de8cc0849b5c47ca9a8eee3dd289fc2. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAHL2382947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02571a2221942caaf24951633a36c72ca89bad7b44058590f3bb758f23269ec9. 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/TCAGJ2288091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1075fbed32101d4d10261bec215ff5566a126ee26080b9e3aebb048e555d3dcb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACZ1791396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71bb192ab439bf70844264b2ef4daf68d26feb54dbf05cc11ffa5a1907a1b69. 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/TCACS1681517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb736cdbc693986c567c57cb3770b8e5191ccd87b62874a3cbe50cf92b91d2b01. 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/TCACD1589545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99712948e62c48ea0042bdd543b75a4f14f2d5ffad38e1e7f31f350b1481efb7. 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/TCACD1585249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443bcbb72313c567a93ec3196edbaba7c1d592c1a7596c4b0b358de9a99cb1b6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCACA1482277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381fd8bdd43357ffda5b7226c0e73486efabb3373ab201beb880dad637b3d8b5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCABY1482368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0de6599d035be27d2565ef102cc2e79e5627c0c685c908a5879498a978c7f6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCABY1482369.