Ok thanks, sounds like I should finally check out this podcast. Instances where I have seen the hardware root of trust mentioned were all on Twitter I think.
A few different podcast episodes about the product:
Storage: Oxide and Friends 2/12/2024 -- Crucible: Oxide Storage
OS: Oxide and Friends 1/29/2024 -- Helios
Virtualization: Oxide and Friends 6/12/2023 -- Virtualizing Time
Networking: Oxide and Friends 2/27/2023 -- Rack-scale Networking
Boot: Twitter Space 10/10/2022 -- Holistic Boot
Firmware: Twitter Space 12/13/2021 -- The Pragmatism of Hubris
Switch: Twitter Space 11/29/2021 -- The Sidecar Switch
As mentioned, there is no podcast about the design Hardware Root of Trust yet.