Benzinga and Yahoo Finance LLC may earn commission or revenue on some items through the links below. Coinbase (NASDAQ: COIN) CEO Brian Armstrong has set an ambitious target for the leading U.S. cryptocurrency exchange: replacing consumer banks. ​ "Ultimately, we want to be a bank replacement for people," Armstrong told Fox Business last week. "We want to be their primary financial account." ​ Armstrong said Coinbase and the cryptocurrency industry in general could offer more efficient financial servi ...