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 0xca4df37d1faab1acd816927f53eafde87d113eee5dc9fae72151ca5c79002310. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adda5368-1fe7-4803-ad97-9f1e0bf09845.json and https://artists.proofprofile.net/proofs/artist/adda5368-1fe7-4803-ad97-9f1e0bf09845.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thám Tử Kiên: Kỳ Án Không Đầu (Original Motion Picture Soundtrack)