On July 25, OKX released the 21st issue of reserve certificates, revealing that the reserve ratios of 22 publicly announced currencies exceeded 100%, of which the reserve ratios of BTC, ETH, USDT, and USDC were 104%, 102%, 106%, and 100% respectively, with a total value of $19,805,395,868. It is reported that OKX is committed to improving the transparency of PoR to traditional financial audit standards, thus continuing to lead the industry in security and transparency. OKX insists on issuing PoR on a monthly basis, the reserve ratio has exceeded 100% for 21 consecutive months, the number of publicly announced coins has increased from 3 to 22, and the PoR system has been continuously upgraded through technologies such as Merkel Tree, Full View Merkel Tree, and zk-STARK, setting multiple milestones. On the premise of protecting privacy, users can independently verify the solvency of OKX at any time, and it has been rated by blockchain expert Nic Carter as the highest level representing the quality of PoR on mainstream exchanges.