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 0x446d4bb32a696b40f5595d968023d8527d58b20d98103769dd34b1c4e9c9f9fa. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aad5ad15-f37b-41b4-afa3-85c18c46d9e2.json and https://artists.proofprofile.net/proofs/artist/aad5ad15-f37b-41b4-afa3-85c18c46d9e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Aperto da Saudade (Heartfelt Music From Brazil 1965-2018)
Memórias do Porvir / Visões do Amanhecer