- the owner of this $12B would never own more than 5% of the total bitcoin (or else its just funny fake money like ixcoin), so total bitcoin worth would need to be $12B * 20 = $240B
- there are 7.127M coins right now. so each would be worth ~$34,000 each
- the current minimum transfer fee is 0.0005 i think? So $17 transfer fee. Still better .... But if you factor in the volatility of bitcoin, if everyone saw such a giant transfer they would assume apocalypse and sell everything down to zero before 6 confirmations. Thus the fee would end up being Close to the total amount of $12Billion.
lol
I would assume that a 5% of all bitcoins transaction would not cause such a big disruption but sure, some would wonder. I would guess that by that time, there would also be enough people around to stabilize the prices so volatility will be less and less of a problem.