Register for an OKCoin account, pass identity verification level 2, deposit at least $100, and trade at least $100 worth of cryptocurrency to receive a $10 or $50 Bitcoin bonus. Every day at 4 a.m. PST, rewards are distributed. This offer is only available to new users. You must complete the aforementioned requirements within 180 days of opening your account.
https://www.okcoin.com