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 0xbc5591f650dbcc4c4b2f9f8892aef1371eb6f64e4bd815345cf284ed031d08c6. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbfd3586-8c68-4e67-8b6c-f60be9e1dc3c.json and https://artists.proofprofile.net/proofs/artist/bbfd3586-8c68-4e67-8b6c-f60be9e1dc3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Água, Sombra, Só! - Maffei & Eternal Soul Remix