As Bitcoin mining becomes more competitive, the hardware used becomes more sophisticated (read: spendy). The cost to run a Bitcoin node, however, is moving in the opposite direction: down. The Raspberry Pi Foundation just released the Raspberry Pi 2 Model B. It features 1 GB of RAM and will perform “at least 6x” faster than the previous model, the B+. It sells for about US$35 and can be bought for bitcoin. For Nodes, Cheap Hardware's Welcome As you may know, Bitcoin miners are the ones rewarded with bitcoins for generating transaction confirmations. Nodes, on the other hand, host and transmit …