Strother Field is a public airport in Cowley County, Kansas, six miles southwest of Winfield and north of Arkansas City. The airport is jointly owned by the two cities. The National Plan of Integrate
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 0x2a9b8afc6f6d00e58864d4780c40b8cd30802018c54510ff0722590ed90c9311. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0b44abf-fc35-4043-876f-4ff793740c24.json and https://artists.proofprofile.net/proofs/artist/a0b44abf-fc35-4043-876f-4ff793740c24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).