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 0x921363d9daee34f9b9a1c3fd6b5396573a3a238ff988ce417718a285e86d42b2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7aec1717-3a7d-4f42-92bf-ec7dfc914b75.json and https://artists.proofprofile.net/proofs/artist/7aec1717-3a7d-4f42-92bf-ec7dfc914b75.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 0xb61aca5f85926a2e4f5c016043557f79c0151b3baf16bb21d54b67400a48962e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXE952300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed71055d80753f1e04e536e92da530d7bca15089dc1da44020c4765e49bd904. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXE952300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdb8b42e95dc9cf565dad373defc1df2c1e66823782209f78fa7f5d303df1a7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXE952300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39139704f0dec204ae085f4b4319924604669b5b1d29a6750c529b885d5e268b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXE952300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc568a1bb284cf83962c6e2b46fdb5e36df5af833a0b048ec8022a3cee1e12b3f. 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/FRX202247133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da61d8e343133085863de7f287f60bf9dc605946028ab9368595629d4b968c4. 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/FRX282132082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17d0e764d01afbc81546db13ef7b32dc7e7c23b1f5f1846916a2aaa7c85efad. 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/FRX282132083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bf53a62c04aba31fb19a27c1347ab82caeeb9cc49476dd3031268602690bc5. 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/FRX282132084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c85f2dd0607c9c52577b33efff5804baa18a26b22fadf2c5448a0efaa74f6d. 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/FRX282132085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04d6fd76e855634c628dbc6daa43f85d9c42bf774a53c09f79f195df2d356e8. 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/BXE951700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8837e315c04cb1eb8b5d0fade4ab1dad58d2783d9b3df83b7ccae182b0cd1d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXE951700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d1a025c6856c3e3c3670688cf0539725ea952c6540526281976a93d9604a1a. 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/BXE951700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6479dc49ccbc237fe55f0d51b8c3137d48b191b757df208859a90450467d187. 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/BXE951700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a36dd94a08bb55711a224bdaba18b53a415c5a47c20bd8994c37dce5c63760b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXE951700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c41eb9997256e6688f0f8039717a69e9e4974a3245da25abfe7bbb5ab261be6. 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/QMPKX1445144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb75ae1f97b15ac08957e983ec608e7f946bdb1542b541d33a93e19383897bf. 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/QMPKX1443273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e4752d6ecceee882d4cefe3239f0dba01b00adea76e0f62e2439ef29348af8. 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/QMPKX1443274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c409bfefc7757f26a48cf4c8aba63af87e3956decd82a1e53b392aead507fe5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMPKX1443279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fac68df0a4be4681523eca1f3550283c345bfec3be72342c1468b428d72fd2a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMPKX1443282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee08a09b23b2b65461e4ff2f0ef926c87a27f1c5aa941356bcd3e4b83838ca8. 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/BXE952400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0416f72644ecac698b9c8ba2f5d94c32c7e66611d7c5556b0719e33cc15f2e. 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/BXE952400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e8b8c1b48b97aba7df302981de5f8f950b7381fc7ab82cadd72cc26f83e0f5. 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/BXE952400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6086bf18b62d3d6bbfae2ba731906989105de798a9c020c0c15681965bdab93. 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/BXE952400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6086bf18b62d3d6bbfae2ba731906989105de798a9c020c0c15681965bdab93. 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/BXE952400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b724361abc8251d6a3244ca6f7143d20ae9c787fca0367e0c716fc4f83d030. 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/BXE951700022.