According to ChainCatcher, Nansen CEO Alex Svanevik tweeted that there was an error on Binance's reserve proof page, and the ERC20 USDC balance was 0 at the time. Zhao Changpeng said that the feature has not yet been launched and is still under development, and that he will convey the error to the team and it will be fixed soon.

According to the page link shared by Svanevik, Binance's reserve proof page is available for viewing, and the above USDC balance is displayed. The page covers 93 assets, including 125,351 BTC, 1,904,674 ETH, about 5.7 billion USDT, about 5.3 billion BUSD, etc. (Source link)