1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aec4b04250e5f16b8068066c27886ec42384ca62d2017691f64ad02853e3e1. 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/5cfa58f0-603d-4a01-92cb-1c269629f233.json and https://artists.proofprofile.net/proofs/artist/5cfa58f0-603d-4a01-92cb-1c269629f233.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Som da Criançola (The Sound of the Criançola)
Zé Pereira (The Carnival Sound of Zé Perreira)
O Som Da Criançola (The Sound Of The Criançola)
Zé Pereira (The Carnival Sound Of Zé Perreira)
Batucada Fantastica - Sounds Of Native Percussion & Rhythms From Brazil