The pillar and post foundation per my internet research is simply cardboard tubes dug below the frost line and filled with concrete every 6-8' under the Sill Log, thus (ostensibly) allowing air beneath the home to aid in drying the underpinning.

The severe taper in spruce logs is the reason I plan to use D-logs simply milling 3 sides from each log so that they lay flat on the log below while allowing me to take full advantage of the 8" of insulating qualities of the log as (in my mind) the chinking/daubing would be the weak link in -40 temperatures, allowing for drafts and wind should any loss occur.