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 0xa39791bd7f96b1c88b84d0e658b4cd54878939766f161f5cdf8ad935da610b8e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c95c3766-6612-4e0d-8d62-7b31af279f9b.json and https://artists.proofprofile.net/proofs/artist/c95c3766-6612-4e0d-8d62-7b31af279f9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Khúc Xuân Yêu Thương/Mùa Xuân Ơi Em Đã Về