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 0xdf2fd3e0dac248e10c72eb7c43279dff182e411df06ab0c7bc8f0d2bec3b84a7. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/406d04b1-4e41-4a67-a331-daa01c1d97a0.json and https://artists.proofprofile.net/proofs/artist/406d04b1-4e41-4a67-a331-daa01c1d97a0.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 0xb81d0d85d87e53e00b83250d099c3d1fab393f214051b0d39dc23ae5fc6d50ba. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:18:42Z), 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/AUWA02100472.
Sometimes (My Brain Doesn't Work) [feat. Between You & Me]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c98c6b56867bf4c08f32896dd44084225dd7d45cab61ef2455b43db4d0bb08. 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/AUWA02300775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7542690575216d7d440bf2dda69ccbc05b7c5ce5fd8b83fb4b2a111ab9e6c04b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM4TW2531140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124dda46a8cc9d4206e61966a0774d6cc0a3cd38b7738df24b06ef96d5b089d6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6N22532518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41e743a2c3a3effe68dac661a93124ffdce3f4fc967273d0b99e799e6d6afcd. 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/USA2P2140305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc35f971750eb2212740f2f46aa8654a49a5c34a9ad55b1f8f2010592d0f844. 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/USA2P2133595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0ad98c679e095d61fa0446f33c1f889c1bc21c4fe88fa4300b866c139da034. 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/USA2P2033423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e48c82949a8835fc39ba7a0f8c0a4a88e60cae3026dc9bdd852ca883d0df13. 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/AUWA02300773.