但监管当局担心这种资产可能用于非法交易，比如一家名为丝路（Silk Road）的基于比特币的暗网市场里就有毒品交易。
But national authorities were wary of potential illegal uses of such assets, reflected in the bitcoin-enabled, dark-web marketplace called Silk Road, a clearinghouse for, among other things, illicit drugs.