Verify a settlement
Every HWAN settlement is arithmetic on public data. This page has your own browser refetch that data and redo the arithmetic, digit for digit, then set its answer against the value on Solana. Nothing here asks you to take hwan.io's word for anything.
What the arithmetic is
Korea, India and Argentina settle on a 24-hour average of one-minute USDT closes over the official rate of the expiry day, computed in exact integers (the same BigInt code ships in this page). World series skip prices altogether: their value is the mean of the Wall Index account's hourly readings, which the program averages on chain by itself. Upbit, Bithumb, Binance, the ECB and the BCRA answer this browser directly; Bitso and CoinDCX refuse browser requests, so those two legs pass through hwan.io's relay, and the receipt marks every line with where it really came from.