Hankey is a small town on the confluence of the Klein and Gamtoos rivers in South Africa. It is part of the Kouga Local Municipality of the Sarah Baartman District in the Eastern Cape. thumb|left|En
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 0xa98d05ddb2a26f7492fe784221adce60bdac0b34793b71bd1046ce8b4e8fb891. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2ef73a5-a04f-4d30-b075-70af31b9509a.json and https://artists.proofprofile.net/proofs/artist/e2ef73a5-a04f-4d30-b075-70af31b9509a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).