{"description":"Daily USDT premium over the bank rate per currency (last snapshot of each UTC+8 day). premium_pct = (best_buy / bank_rate - 1) * 100.","history":[{"date":"2026-10-08","currency":"USD","bank_rate":0.99917,"best_buy":0.99917,"best_source":"Kraken","premium_pct":0},{"date":"2026-10-09","currency":"USD","bank_rate":0.99927,"best_buy":0.99927,"best_source":"Kraken","premium_pct":0}],"license":"Free to cite with a link to https://oaneo.com/rates/","source":"https://oaneo.com/rates/"}