They serve as a kind of common currency between participants, acting as fuel for the smart contracts that govern the system but also as an incentive for people that buy power through it. (coindesk.com)
That led him to explore different modes of expression, and by different means that have become common currency in contemporary art. (michaelwerner.com)
I'm sure there is room for reasonable difference in opinion about the magnitude of the effect, but its existence is common currency among people who are actually working in the area! (julesandjames.blogspot.ru)