Jim Sinclair has predicted that gold will reach $50,000 (USD) per ounce in 2020.  If you compare the movement in the gold market against the bitcoin market they almost match each other.  Perhaps this is because bitcoin was designed with artificial scarcity based on the extraction of gold from the earth.  The global gold supply increases at approximately 1% a year.  Start stockpiling those bitcoins!!!  

If you have never heard of Jim Sinclair look him up.  He knows his gold very well and has accurately predicted peaks in the gold markets before.