Bankers are sometimes referred to as "hawkish" if they announce tightening monetary policy.
The minutes stated that the Fed would be cutting back support for the US economy, which is bad news for riskier assets like crypto.
The crash has also been linked to the US stock market falling, which has been linked to concerns that interest rates are about to rise.
Bitcoin, the world's biggest cryptocurrency, was down 8.6% over the 24 hours to 4.50 a.m. ET. Ethereum is the second biggest cryptocurrency and that went down 12%.
For most this is just a normal period in the market.
