My trust chain: I don't know crypto and didn't know who you were (so I might have asked the same question) but a few days ago I found out you are involved with tptacek with latacora.com so that was all I needed to know and trust what you said.
It's sort of the HN version of 'yeah, he's a goodfella'.
Separately with latacora I suggest that you wrap in some ongoing residual that carries on far past the 'eventually you staff your own security team' phase (as added insurance for 'leadership').
Thanks! We're not looking to make money from clients in perpetuity. One of the things we like about the model is that we plan our own obsolescence and then get out of the way. It lines up our incentives.