Since most blockchains are decentralized and, therefore, have no central governing bodies to mess with the record as it suits them to, smart contracts that allow people to share ownership of an asset between them is an ideal solution. However, disputes could prove an issue.
Let’s say Owner 5’s three-year-old spilled apple juice all over the back seat of the shared car. Owner 7, the next car user, spots the damage and requests Owner 5 pay for cleaning. Owner 5 says that the spill had occurred before they got the car. What then?