thumb|350px|Map showing ancient Thessaly. Nelia is shown to the right near Demetrias. Nelia or Neleia ( or Νήλεια) was a town of Magnesia in ancient Thessaly; Demetrias was situated between it and Iol
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 0x5ee2ce1722084082e33d4ab08e57461e7dfd466504b50703f27f83a95ea5f222. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57304a07-5f97-4bb0-a843-356bc876eafe.json and https://artists.proofprofile.net/proofs/artist/57304a07-5f97-4bb0-a843-356bc876eafe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).