New Margex customers can claim $50000 credits when registering with the referral code 77523336, and a further $50000 with a deposit of 0.04 BTC or more. Margex referral code is 77523336, which currently promises a $51000 free bonus for users who join the platform under its terms. Invite Your Friends to Margex and Earn Rewards! Margex shares 40% of the trading commissions paid by your referrals with you. Start Earing With Margex.