OKCoin are one of the first exchanges to offer the opportunity to earn Bitcoin through the Stacks (STX) token. All it requires is an initial deposit of $100 in Stacks but by using the referral link I've provided you could earn an extra $15 in STX (no such thing as a COMPLETELY free lunch but this is pretty close).
Stacks is arguably the most exciting project in crypto at the moment. It aims to bring smart contracts and dApps to the Bitcoin blockchain, essentially giving bitcoin the functionality of Ethereum and similar projects. A truly user-owned internet is a key motivating factor behind the development of Stacks. For those interested in learning more, here is a 15 minute video from the founder Muneeb Ali describing the project in detail. https://www.stacks.co/
For those of you who just want to skip right ahead to earning bitcoin passively, here's what you do.
1. Follow my referral link to OKCoin posted at the top and bottom of this article.
2. Register and pass identity verification level 2 (this requires uploading photo ID with a proof of address).
3. Purchase $100 STX and deposit into your 'Stacking Wallet' (this can be found under the 'Earn' heading on the website).
4. After following these steps you and I will receive a further $10 into our respective Stacking Wallets. Everyone's a winner, baby!
5. Should you decide to continue Stacking beyond 30 days, we'll both receive a further $5 to our Stacking Wallets.
Once you are stacking, you will be rewarded in bitcoin each reward cycle. Personally I see the Stacks project as one with huge future potential and by locking up your STX not only will you earn BTC but you will have invested early in a project with massive future potential. If you have any problems with the sign up, leave me a message in the comments. Happy Stacking!
Sign up link: https://www.okcoin.com/join?channelId=600009922