Bitcoin is struggling below the $21,000 zone against the US Dollar. BTC could continue to move down unless there is a clear move above the $20,750 resistance zone.

Bitcoin started a fresh decline below the $21,000 and $20,500 levels.
The price is now trading below the $20,500 level and the 100 hourly simple moving average.
There is a major bearish trend line forming with resistance near $20,820 on the hourly chart of the BTC/USD pair (data feed from Kraken).
The pair could decline further if there is a clear move below the $20,000 zone.