KAAL (channel 6) is a television station licensed to Austin, Minnesota, United States, serving as the ABC affiliate for Southeast Minnesota and Northern Iowa. The station is owned by Hubbard Broadcast
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 0x685d2e4897e9bd76e8c153b779b4d509e266e3213a1c117c069d9dd8b01f7cd1. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2eb76d5-de98-4c30-afc7-28dddf9eafcb.json and https://artists.proofprofile.net/proofs/artist/e2eb76d5-de98-4c30-afc7-28dddf9eafcb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).