Withum, a well-known American accounting firm, released an audit report of the USD bank account mortgaged by BUSD in March 2020. The report shows that as of 5:00 pm on March 31, 2020, the balance of U.S. dollar assets collateralized by BUSD in banks was US $ 187,790,574.09 (approximately 188 million). Data on the Ethereum chain shows that the current total supply of BUSD is 187,790,574.09 (about 188 million). The report data shows that the USD balance of the BUSD reserve in the bank is consistent with the number of BUSD tokens. Each BUSD is allocated a redemption value of 1 USD, and the USD is strictly anchored at a 1: 1 ratio.