+1 to this as a "thing" ie lockable It could be easily tracked like when weapons are crafted and you Char name is in the built by.. description. might be a bit harder for raw mats but totally do-able

There's no such thing right now, unless a mod of some sort makes it possible.

Might be that the potentially upcoming difficulty settings would feature that kind of thing.

There is a couple of mods for this, currently:

ServerCharacters[valheim.thunderstore.io] - recently updated, but has to be installed on the server and all connecting clients to be able to do its thing. Alternately, there's also World of Valheim SSC[valheim.thunderstore.io], but that one hasn't been updated since around EA launch.