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 0x2ca47f672d4659793a654b54cd972bf99d84a02b488a6dbbafc024f513a82414. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf8369c6-ab32-4506-ac7e-2d98415eb9d2.json and https://artists.proofprofile.net/proofs/artist/bf8369c6-ab32-4506-ac7e-2d98415eb9d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ht- Guitar Vĩnh Tâm 2- TCS- Lời Buồn Thánh