KIOL (1370 AM) is a radio station broadcasting a classic hits format. The station's previous call sign was KALN, prior to August 12, 2008. Licensed to Iola, Kansas, United States, the station serves S
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 0xf1cc06411b97faff5e1fd580bc70120be9e314061f78f734a6ea35bdaef9bdc2. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6c8d321-5dfa-423d-bed4-12da7204d135.json and https://artists.proofprofile.net/proofs/artist/a6c8d321-5dfa-423d-bed4-12da7204d135.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).