TL;DR: There is no formal entry… the actions on chain determine eligibility. To be eligible: Your address must be funded as of 2/1/2022 midnight UTC. ̶Y̶o̶u̶r̶ ̶a̶d̶d̶r̶e̶s̶s̶ ̶m̶u̶s̶t̶ ̶d̶e̶l̶e̶g̶a̶t̶e̶ ̶5̶0̶%̶ ̶(̶o̶r̶ ̶m̶o̶r̶e̶)̶ ̶t̶o̶ ̶v̶a̶l̶i̶d̶a̶t̶o̶r̶s̶ ̶r̶a̶n̶k̶e̶d̶ ̶2̶1̶–̶1̶0̶0̶ ̶t̶h̶a̶n̶ ̶t̶o̶ ̶v̶a̶l̶i̶d̶a̶t̶o̶r̶s̶ ̶r̶a̶n̶k̶e̶d̶ ̶1̶–̶2̶0̶.̶ Your address must delegate 50% (or more) to validators ranked below top-20 than…