While cryptoassets have generally been accepted as a form of property in Commonwealth jurisdictions, it remains unclear how specific property rules apply. What is required for title to a cryptoasset to be legally transferred? Is a blockchain transaction necessary or sufficient for that purpose? If a transaction is unauthorised or procured by fraud, when (if ever) do subsequent purchasers take free of the original owner’s title? These questions are relevant, for example, to proprietary disputes in crypto litigation and the structuring of secured crypto-finance arrangements.