Paul Richard (1697–1756) was the 38th Mayor of New York City from 1735 to 1739. Paul Richard was one of the most prominent merchants and citizens of New York, and Mayor of the City in 1735–1739. His r
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 0xaa7afdb2cc4e9fa675dab13a8bb851dfdaed7615fa1b0eefb1a5c1fb409f550b. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d49d0f83-0015-47b5-bde3-8eafd8496033.json and https://artists.proofprofile.net/proofs/artist/d49d0f83-0015-47b5-bde3-8eafd8496033.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).