KALF is a commercial radio station licensed to Red Bluff, California, and located in Chico, California, broadcasting to Butte, Shasta, Tehama, and Glenn Counties on 95.7 FM. KALF airs a country music
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 0x517e75837a26a1768eee0051b2279d43f42d028c44902f6fd15db4da24670170. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e04813f6-9231-4a82-b791-a0c9d6684db4.json and https://artists.proofprofile.net/proofs/artist/e04813f6-9231-4a82-b791-a0c9d6684db4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).