Thanks! You're the second person I've seen trying to write about those whose names have fallen off the grid (I assume correctly?). As I mentioned, at least one of the devs of Skyledger is claimed to be one of the early developers - all the Googling I've found points only to one recent video interview that suggests a bit of deep knowledge but nothing that couldn't be gleaned off just following discussions. I've also been following the trails of some others, all cypherpunks of some water, only for interest but I can't help but wonder if any were involved in launching the Bitcoin experiment.