Rewards from bounties on Cent are paid out in Ether (ETH), the digital currency of the Ethereum Network. Your Ethereum address is like a portable digital bank account specifically for holding ETH. On Cent you will earn ETH for sorting and responding to posts that have bounties denominated in ETH attached to them. You can also earn by your post being seeded or by receiving a tip on your responses. You need an Ethereum address so we know where to send your ETH rewards.