After the bidding period ends, the 1440-block reveal period begins, during which bidders must reveal the true value of their bids. The bidder with the highest bid (NOT the highest lockup) wins the auction and mints the name. If you placed a blind, it's immediately returned to you when you reveal your bid. A note of caution: If you forget to reveal your bid, it will not be counted and you will permanently lose your entire lockup (both your bid and any blind). However, you don't have to worry about losing your coins if you use Namebase as Namebase reveals your bids automatically.