KEOL (91.7 FM) was a radio station broadcasting from Eastern Oregon University (EOU) in La Grande, Oregon. KEOL operated at 91.7 MHz with an operating power of 310 watts. Programming on the station, o
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfebbc079bab4b078d54c24bf389a2cee1744ccae8d96d89d2c9db2ad1bbf1fb. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7bc149fd-14cb-4cf6-9c23-e6a0a05da40c.json and https://artists.proofprofile.net/proofs/artist/7bc149fd-14cb-4cf6-9c23-e6a0a05da40c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).