Bitifinex has released its official white paper for its $1 billion IEO. The crypto exchange is seeking that amount in Tether ($USDT) through a private sale with a public sale option if private funds fail to cover the targeted amount. iFinex, the parent company of Bitifinex, has tapped its other subsidiary, Unus Sed Leo Limited, to conduct the issuance which will close May 11th rather than the previously reported May 10th.