Another volatile week in the crypto markets finished with a sharp decline, leaving the price of Bitcoin (BTC) up just 4% for the week following a strong start that saw BTC climb 15% in 12 hours. Ethereum (ETH) and Binance-coin (BNB), the second and third biggest assets on the Brave New Coin market cap chart, have gained 1% and 5% in the previous seven days, respectively.