thumb|New York Harbor and the Hudson River in the foreground; the East River in the background thumb|The Jebel Ali harbor is the largest man-made harbor in the world. alt=A panoramic view of Carry-le-
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 0x7769953e14d859d233b2087ddd87fe740ac8ec45e382c7ca16a8f5c78b6b34e0. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb46ab15-2e6a-4760-aa0b-9477b9818663.json and https://artists.proofprofile.net/proofs/artist/fb46ab15-2e6a-4760-aa0b-9477b9818663.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).