LPoS, or Leased Proof-of-Stake, is a new solution for network security designed by the Octopus Network. Appchains are secured against the value of the $OCT token provided by validators and delegators.
Validators and Delegators have to bear the opportunity cost for the duration of the unbound period, so naturally they want the unbound period to be as short as possible. The unbound period of Octopus Network is 21 days for two main reasons: