4ZA (now known as The Hits Southland 98.8) was an adult contemporary radio station in Southland, New Zealand. Early years 4ZA began broadcasting in Southland on 820 AM in 1956 as a commercial 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 0x75f0ad8d677aa9dd905d14ad3ad943e27706ca2ef03374960f422639abe1c644. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c1b7bce-fd83-4e2d-86ca-274515bddb98.json and https://artists.proofprofile.net/proofs/artist/2c1b7bce-fd83-4e2d-86ca-274515bddb98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).