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 0xbec6c6684b3559286db1e52e8b9af7718f9639d652c8ee9ae585ae47bbcf2f7a. 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/ce5c2660-3d91-4559-ae05-4e1ac91e9cb3.json and https://artists.proofprofile.net/proofs/artist/ce5c2660-3d91-4559-ae05-4e1ac91e9cb3.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 0x284aba8133f1520226dd538b8c6e8af2fe48bfb25bbeb53cf9996b0ddbcc4c4e. 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/GBUM70711275.
Riding The Rock Machine: British Seventies Classic Rock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206ee90ee1012af1909150089ba0cd46e6dca962764e11b833798cef30229d81. 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/GBBLY2004954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa98a40a68e9c51e80b8808a28825304122fd3dc7a4e704ca38643f71e4c205. 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/GBUM70711277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e311e8a7577c07e000414d0cf8a3c3b3beed3f68d32fce940307d86e273008. 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/QZRP42278971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c316fa1bc9a9c7260d71bdd5f31db759ee0a3e608fa01e28e4c10323ba56e5d. 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/GBUM70905698.
High In The Morning: The British Progressive Pop Sounds Of 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbcf3e539e39f36b208c26cebaf6f64a6707d273db0f953fbee87ae05c1a9a9. 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/GBBLY2004951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284aba8133f1520226dd538b8c6e8af2fe48bfb25bbeb53cf9996b0ddbcc4c4e. 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/GBUM70711275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284aba8133f1520226dd538b8c6e8af2fe48bfb25bbeb53cf9996b0ddbcc4c4e. 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/GBUM70711275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a0ae0ab5bb89108eac2a1655ed0e6a7738bd0320d1dd9332058437eaff7645. 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/QZNWT2106394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284aba8133f1520226dd538b8c6e8af2fe48bfb25bbeb53cf9996b0ddbcc4c4e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBUM70711275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6007e2a7b0166c0cc8e0e8411d58c181823f2ed7861d695bf0b3dd184da173d. 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/GBUM70808912.