Bitcoin hit a record high earlier this week, which is expected to allow miners to extend November's profitability into December, according to a report released by investment bank Jefferies. Bitcoin mining economics improved in November, with the average Bitcoin price rising 31% while the average network hashrate rose almost 4%; the average daily revenue per Exahash in November was $55,649, up 20.7% month-on-month. In addition, U.S.-listed miners mined fewer Bitcoins in November than the previous month. Despite this, they mined more Bitcoins on a "network basis," accounting for 24.7% of the entire network. (CoinDesk)