Quote from: gog1 on January 04, 2015, 02:06:49 AM

Quote from: dmcdad on January 04, 2015, 01:26:45 AM

Quote from: gog1 on January 03, 2015, 11:46:46 PM

if mining capacity drops sharply, confirmation may takes forever and kill bitcoin

That isn't the way the bitcoin protocol works. It will adjust to a 10 minute confirmation regardless of the direction difficulty goes.

If network hashrate drops by a small amount - then what you say is correct, if hashrate drops by 90% in an extremely short period of time, it'll take 140 days to confirm all the necessary blocks for the next diff adjustment.

I'm not going to lose sleep over that scenario.