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 0xc907d7af9d9e56e82c53643a4b9fa9ba3e34bec3d616026429fc803c7f18926f. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c575cf9b-0a0f-4cb8-ac72-d4ec087a6057.json and https://artists.proofprofile.net/proofs/artist/c575cf9b-0a0f-4cb8-ac72-d4ec087a6057.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Muito Prazer, Me Chamo Nordeste e Esse É Meu São João!
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 0x1d32a6239a379475443e487a3a025da6fa75ed77439169597cb8a06570b371fd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJW2368431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab6112dca47a12094c508d3ca564923bb6e9bdba0f59926e6d846ab210770fe. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:38Z), 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/QZNJW2368435.
Eu Fiz uma Fogueirinha / Voa Meu Balão / A Fogueira Tá Queimando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c7db3eabdc71c6ac3a2d9083cc2e2f35939150105645ef504cc947c15c49bb. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJX2469961.