@Ashfall every time you need proof of ownership but not the objet itself.
Think of owners of land, property, stock etc.
If you don't need any lawyers or other specialists for bookkeeping who owns which property (with all the fees & taxes this entails) then transfer of those things will get a lot cheaper.
If you trade a house in europe you usually pay 5-figures just as transaction-fees to the people doing the neccessary paperwork.
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