The bitcoin system is often described as inexpensive because maintenance costs are not charged to the bitcoin users, but are generated as reward for mining. (coindesk.com)
Bitcoin Interest stands out among other forks because apart from the usual reward for mining, investors can also earn interest by parking their BCI coins. (links2exchange.net)
Critics say that a smaller reward for mining is complicated by the so - called difficulty bomb, which is a code in the ether chain that makes it incrementally more difficult to mine. (hacked.com)