This crypto week, we watched Bitcoin play with USD 9K while coronavirus fears weighed on stocks, saw BTC usage rising on darknet markets, found a clear indication of healthy BTC adoption, and discovered that the 51% attack on BTC is pricier and on ETH cheaper. Speaking of ETH, a USD 1.57 million bet was placed in hopes that ETH will exceed USD 600 before the end of March. Speaking of attacks,