i think no one will know the exact reason why bitcoin prices rise so fast today and we only can follow the price wherever it is up or down. but now the price it seems need to make correction because i see the $8000 wall is not break but we still have many times to break the wall so be patience and enjoy the ride. i think we can still hold our bitcoin if we want to sell at more than $8000 meanwhile the altcoin is in the red zone and i think its the time to buy another amount for altcoin.