{"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":"TWD","bank_rate":31.84258669846,"best_buy":32.19,"best_source":"MAX","premium_pct":1.091},{"date":"2026-10-09","currency":"TWD","bank_rate":31.84577360226,"best_buy":32.183,"best_source":"MAX","premium_pct":1.059}],"license":"Free to cite with a link to https://oaneo.com/rates/","source":"https://oaneo.com/rates/"}