KOHI (1600 AM) is a radio station in St. Helens, north of Portland, Oregon, on U.S. Route 30. It serves the cities of St. Helens, Scappoose, Salmon Creek, La Center, Woodland, and Kalama, the last fo
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 0x890c2c916709df37b8af492c50c771baa6644ad4a4ff05d49a26f9cd1882ad5b. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78b6c8b8-0c5c-43ea-a022-812127baa85a.json and https://artists.proofprofile.net/proofs/artist/78b6c8b8-0c5c-43ea-a022-812127baa85a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).