KBIZ (1240 AM) is a radio station licensed to serve the community of Ottumwa, Iowa. The station primarily broadcasts a news/talk format. KBIZ is owned by Greg List, through licensee O-Town Communica
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 0x1c98cf93bb50ddcbb8d67c3abb02fe7a955556a63b5d43d38adf945194d8bb27. Chain 2 (Bitcoin): anchored in block 953975 (2026-06-16T16:53:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b964c04-6ad1-466e-aa83-ab94e4e06142.json and https://artists.proofprofile.net/proofs/artist/2b964c04-6ad1-466e-aa83-ab94e4e06142.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).