Chinatown () is a common term used to describe an ethnic enclave of Chinese people located outside of Mainland China, Hong Kong, Macau, and Taiwan, typically situated in an urban area. Chinatowns can
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 0x82e1c402b93d4bcd5b950c05c5d43d03c341979da138514060551e8f3b337dcd. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ade873ba-e399-4b26-a353-0b9b2b2ab5e0.json and https://artists.proofprofile.net/proofs/artist/ade873ba-e399-4b26-a353-0b9b2b2ab5e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).