Sealing Gaps in sheathing, remote location

Hey everyone!
I've recently taken over stewardship and building completion on a 1600 SQ ft, 2 story cabin in remote Alaska.
Thinking about all that needs to be done before the cold comes and need to deal with some draft issues.
The house is a raw shell with no siding yet and I need to get the gaps between the sheathing. Access to materials is limited, and while I have all the lumber I could ever want, even amazon struggles to deliver here, so buying tape would be an absolute "if I must", could take a month or even long to get here.
So what are your ideas? I was thinking along the lines of fibrous cord caulk made from cedar bark off of fallen trees, then using pine pitch. But that seems adventurous. So any ideas you all may have are very welcomed!

I usually run blocking at every joint; my intent is strength/racking resistance, but it would reduce drafts as well.

If I was skipping tape.. I might try packing the seams with something like your cedar bark/pitch mix, and depending on the siding plan perhaps I would run strapping on the outside over top, especially the vertical seams..

The siding will be reclaimed, corrugated roofing and definitely strapping for that on the verts. I like the idea of blocking, which would make the packing much easier. Thanks!

I'm thinking most natural sealing materials are likely to be moisture absorbant too (wool, moss...). Mike had maybe a similar situation on this thread here, which may give some ideas.

Why not use a board and batten system on the interior sheathing since wood is plentiful?