Coinbase's public exchange rates for the US dollar (api.coinbase.com/v2/exchange-rates?currency=USD), in the first reading SABI takes at or after 20:00:00 WAT (19:00:00 UTC) on 2026-11-14 and before 20:05:00 WAT, give NGN at or above 1347 naira per dollar, exactly as the answer states it. SABI keeps that answer, the time it arrived and its SHA-256.
No
That reading gives NGN below 1347.
Void
Void if SABI has no such reading between 20:00:00 and 20:05:00 WAT that day (Coinbase out of reach, or no naira rate in its answer), or if CoinGecko's exchange rates, read by SABI in the same minutes, give the dollar in naira more than 0.5% away from that reading. Missing data is never read as No.