Mazars, the auditing firm that works with major cryptocurrency exchange Binance, has halted all work for crypto industry clients, according to Coindesk, citing an emailed statement from Binance. “Mazars has announced that they will temporarily halt their work with all of their crypto clients worldwide, including Crypto.com, KuCoin, and Binance. Unfortunately, this means that we will be unable to collaborate with Mazars for the time being “According to a spokesperson for Binance who told Coindesk. Mazars had earlier this month performed a so-called proof-of-reserves check on Binance’s bitcoin holdings, discovering that its bitcoin reserves on a single day in late November were overcollateralized.