Coinbase Switchcp-usd transactions to bid mode

Coinbase has switched the cp-usd transaction to the competitive mode, and no synthetic transaction is expected for at least 10 minutes. At the competitive stage, the user may submit a limited price list and see the advance offer, after which all cross-orders will be combined with a single open price. In addition, Coinbase had previously announced its support for Cluster Protocol (cp) and had opened a full-filling address。