j"19HxigV4QyBv3tHpQVcUEQyq1pzZVdoAutM#<div class="post"><div class="quoteheader">Quote</div><div class="quote">Even Google doesn't have the computing power to rebuild the blockchain from the beginning. Even if they did, to what end? To steal a quarter million dollars in wealth? Which would likely collapse the system if it could be done at all, so that value would drop to zero. <br/></div><br/>They wouldn't need to rebuild the blockchain from the beginning. They can double spend any transaction that happens after the 50% Ghash/s takeover. Of course, if they get too greedy, the system would collapse as users become fed up with their coins being stolen all the time. But what if they decide to double spend a certain "optimal income" percentage of transactions, just short of what will piss off most users?</div> text/html
https://whatsonchain.com/tx/23ef33a7e1e61808644226a06e8c2d64e1b400aacf36fa8fd52a8d0c4e1b01dc