KEII (690 AM) was a commercial radio station in Blackfoot, Idaho, broadcasting to the Idaho Falls-Pocatello area. The station aired a variety hits format branded as Cannonball 101. KEII was a divisio
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 0x57b78b0fe4b578002e3c0578a3e99391990d42b9a3bf892f4479dff04fba02b8. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a30146f-ddd5-4ec4-a4d4-ff0ee3808648.json and https://artists.proofprofile.net/proofs/artist/6a30146f-ddd5-4ec4-a4d4-ff0ee3808648.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).