Tama ka paps. Almost 80% na nga ng kabuuang bitcoin ang na mina na. Kaya lumalabas na 4.2 million coins na lang ang hindi pa namimina. I've read somewhere that there were about 5000 more or less bitcoin miners. Ganun sila karami kahit na napakamahal ng gamit sa pagmimina. Simply because miners were rewarded with a humungous 12.5 bitcoins per one full block. With these big reward, ang laki ng posibilidad na all those remaining bitcoins will be mine.