On May 29, according to official news, OKX released the 31st issue of reserve certificates. The reserve ratios of the 22 announced currencies all reached 100%, of which the reserve ratios of BTC, ETH, USDT, and USDC were 105%, 102%, 100%, and 100%, respectively, with a total value of US$28,049,189,977. It is reported that OKX is the first crypto exchange in the industry to achieve POR releases for more than two consecutive years. During this period, OKX insisted on releasing PoR on a monthly basis, increasing the number of public currencies from 3 to 22, and continuously upgrading the PoR system through technologies such as Merkel Tree, Full View Merkel Tree, and zk-STARK, committed to user asset transparency.