Sashtags Building on Hole Punch

It's been a little over a year since you were last on the show. We're explaining this vision for Sashtags building on hole punch. Last month we had Paulo or Duano on from Bitfinex and Tether talking obviously about Tether, but also hole punch and building Keet.io and hole punch. So it seems that a lot of development has happened with hole punch specifically over the last year since we last talked. Maybe we start there with the developments at that layer,. maybe give a refresher of what that is and how you are using it to implement Sashtags.