Crypto exchange Coinbase Inc. (NASDAQ: COIN) suffered from a major outage Wednesday, with users reporting zero balances in their account as Bitcoin (CRYPTO: BTC) hit the $64,000 mark. Coinbase CEO Brian Armstrong said the exchange was dealing with a “LARGE surge of traffic” and apologized for user inconvenience. “We are aware that some users may see a zero balance across their Coinbase accounts & may experience errors in buying or selling. Our team is investigating this & will provide an update shortly. Your assets are safe,” Coinbase tweeted. After hitting the $64,000 mark, Bitcoin dropped 8%…