KOLW (97.5 FM) was a radio station broadcasting a classic hits format branded as "97.5 Kool FM". Licensed to Basin City, Washington, United States, the station served the Tri-Cities area. The station
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 0x9c0cf050dafb49478eeeff3650ae3f0d87b7247002b56473205ed3c4d7bac1b6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b69301a6-c6d2-421c-9dad-10943af887bc.json and https://artists.proofprofile.net/proofs/artist/b69301a6-c6d2-421c-9dad-10943af887bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).