thumb|A high five between two U.S. Navy sailors thumb|right|NASA's Curiosity rover team celebrate with high fives after the landing on Mars, August 2012. Variations seen include: the two-handed high-f
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 0x3a7febacb83f350d222d5f7999cc4e76f5df68f920a629332cfc3bf3133cb1b3. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0e4ba5d-6c67-4a0b-b142-fabf700423dd.json and https://artists.proofprofile.net/proofs/artist/a0e4ba5d-6c67-4a0b-b142-fabf700423dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).