James John (1809–1886) was founder of the settlement of St. Johns in Oregon. The area later became a city when it passed a charter in 1902. It was annexed into Portland in 1915. John worked as a gener
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 0x978d7e66d62e3ab9c2735f3046bcc91c945665561f1174d56b1d887628be7ceb. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb04fc01-a6c2-4ca6-b870-3ce49d32e553.json and https://artists.proofprofile.net/proofs/artist/bb04fc01-a6c2-4ca6-b870-3ce49d32e553.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).