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 0xa929dc60fd02fa07a7d652e75484e0073e9676b9c61238d1d8246415ef64acc4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ccae8e5-0aaa-4d6c-aa2a-52cef10bb398.json and https://artists.proofprofile.net/proofs/artist/9ccae8e5-0aaa-4d6c-aa2a-52cef10bb398.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 0x8edb29ba7fc1ddc4b547d4fbd24cc01b04778a5df026659c41e8caa6bdc6cd4a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:34:27Z), 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/PT1KG2100737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f0b22aa6f6d630d86284f3868edd96384fa538dc990bfd62c2c148213f1257. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:55:37Z), 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/PT1KG2100735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fb125561fe78eb9df5c3d7909bb69838c8d638307217124370883d8be365df. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:09:09Z), 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/PT1KG2100739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ccc5978252351845713ff7c5de47a19b4f2500106af436af2ac4229ecc19d0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PT1KG2100738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2413e82c0278142f753955a8c8bec9200d8414104339d3563f15bc1440f6adcd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:05:43Z), 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/PT1KG2100873.
Bem Gostosinho (Mulher Solteira) [Rework 2024]