Coinbase CEO Brian Armstrong has offered up Bitcoin (CRYPTO: BTC) as a potential solution to the surging national debt of the United States. What Happened: His remarks were in response to a tweet by analyst Robert Sterling, who highlighted the rapid increase in national debt through a color-coded chart. Sterling’s chart showed an explosion in national debt, with each color signifying an additional trillion dollars. His tweet read, “This is the scariest chart I’ve ever made. Each color shows $1T getting added to the national debt. We’re now adding one every 90-120 days.” Sterling warned of the …