right|270px|thumb|Yuza town hall right|270px|thumb|Yuza High School with Mount Chōkai in background is a town located in Yamagata Prefecture, Japan. , the town had an estimated population of 12,719
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac30c06cac75d49a7f66833fc1ac8bf2b115823569c96989492d5cc55207fae. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77ca782f-a662-4062-adb5-91f929354f52.json and https://artists.proofprofile.net/proofs/artist/77ca782f-a662-4062-adb5-91f929354f52.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).