You can use this referral promocode to invite users. If someone buys a contract using your promocode, then that person gets a bonus of 5.0% of the bought hashrate for free and you get a referral BTC bonus according to your rank (up to 12%)!
Invite your friends sharing this url :
Personal referral promocode works same way as generated promocode. But you can come up with your own text for it. You can use up to 15 Capital Latin characters or Numerals.
Attention! Changing your personal promocode will make your old personal promocode illegible (users that have already used your personal promocode will not be affected)