I’m not sure about the technical details of the process but I know for sure that blockchain can be used as a land verification tool. From what I gathered from the internet, “each document in the blockchain is given a unique digital code or "fingerprint" to prove its authenticity and protect its contents. Only verified digital IDs or e-signatures will be given access to the document, vouching for authenticity and preventing fraud”.
SourceEverything is already set, the procedure is clear, all we really need is recognition. There should be an international law for this, so that if the country you left because of war doesn’t accept your claim, you could seek help from an international court.
Ideally, it should be implemented globally, since we never know what might happen in the future (God forbid, another war). This way, as long as we or our families are still alive, we can still claim the properties we had to leave behind.
I’m not sure if there are already countries doing this. The USA is probably the most advanced right now when it comes to crypto regulation.
Maybe Trump would even consider it... what do you think?