thumb|An articulated double-stack well car owned by the TTX Company. The capacity car is a Gunderson Maxi-IV. In transportation, cargo refers to goods transported by land, water or air, while freigh
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 0x2b40818dbda549eb6e151fc914db21f3fd77da2d71d153f757a36a9d3620bc0f. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff116139-8650-4723-911c-24a160814255.json and https://artists.proofprofile.net/proofs/artist/ff116139-8650-4723-911c-24a160814255.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).