Bonnie Madison Stewart (July 10, 1914 – April 15, 1994)Bonnie Madison Stewart, findagrave.com, retrieved 2016-11-21. was a professor of mathematics at Michigan State University from 1940 to 1980. He e
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 0x238eabe46e4e4ad885b1c9d01ac3a4c59936222996dd6bb8d4aafda1fefcae82. 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/fb728b07-e490-424d-9a39-ff0dd63f5e1c.json and https://artists.proofprofile.net/proofs/artist/fb728b07-e490-424d-9a39-ff0dd63f5e1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).