This is really nice of them, the last day is June 29 (00:00 UTC). So there is still time for those who didn't register to get a 20% value in nUSD of their total Havven coins( which will be calculated at the value of 0.50$ per Havven).
I just do not understand why they create nUSD. And what is this nUSD coin used for? Anyway, I still hope that they will send me tokens on my mew purse after they check the havven number in everyone's wallet.