FILE - In this June 1, 2021, file photo, a woman walks past an advertisement for the Bitcoin cryptocurrency in Hong Kong. China’s biggest banks promised Monday, June 21, 2021, to refuse to help customers trade Bitcoin and other cryptocurrencies after the central bank said executives were told to step up enforcement of a government ban. (AP Photo/Vincent Yu, File)
On Monday, Bitcoin declined about 10 per cent to a two-week low as regulators intensified scrutiny. AP  

Banks test cryptocurrencies offerings amid regulatory scrutiny