thumb|right|240px|Inside the Tillamook Cheese Factory thumb|right|240px|Creamery plant with small cheese block processing lines thumb|right|240px|Cheese vat where milk is stirred after cultures and re
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 0x470f6e23ad84404fd22ca9616e4331ca7d3c1a04d364247276886d2e6d27c533. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/882d4798-d921-4ce8-8579-7de57277f3dd.json and https://artists.proofprofile.net/proofs/artist/882d4798-d921-4ce8-8579-7de57277f3dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).