thumb|upright|Bottles of water collected in 1930 from the River Jordan, at the site where Jesus Christ was believed to have been baptized by John the Baptist thumb|upright=1.2|A Thai student pouring t
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 0xf541b04858765c853fc4ace8bded6cc476eab74b4fa9bb5ff7c5ae51c3e21a0b. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b04aa45d-5b22-40aa-9a44-04db0aaea215.json and https://artists.proofprofile.net/proofs/artist/b04aa45d-5b22-40aa-9a44-04db0aaea215.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).