Seems like the beginning of the year is not always good for cryptos. The market cap always dips until around mid May or early June, then it starts creeping back up. This has been the trend for the past 3 years. So we should see bitcoin over 20K later in the year. This is a great buying opportunity in my opinion. How far it will drop no one knows. Also remember that the Mt Gox trustee has a total of 200,000 bitcoin;he sold off around 35,000 btc for $400 million fiat, he still has another 165,000 bitcoin to dump. This might drive bitcoin further down, lets wait and see :)