thumb|Aerial view of mesas in Monument Valley, on the Colorado Plateau thumb|right|Har Qatum, a mesa located on the southern edge of Makhtesh Ramon, Israel thumb|Ingleborough in North Yorkshire, Engla
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 0x9283f813b8bd7fe5913c6298f2d5e93486a44eb0c08a7e221ba097b2ab76b245. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f227ffc-c7c7-411c-8699-98ef7df1cdcc.json and https://artists.proofprofile.net/proofs/artist/1f227ffc-c7c7-411c-8699-98ef7df1cdcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).