Blockchain and authentication

Public and many private/permissioned Blockchain systems have nodes in many countries and can be accessed from anywhere, therefore, while users may be subject to recognized governmental or intergovernmental authorities, the same is not the case for the Blockchain system itself. As a result, an intergovernmental framework may be needed for the cross-border acceptance by authorities (for example courts) of Blockchain data. Such a framework could, for example, define required levels of authentication, reliability and accountability in cases where credentials (i.e. means of authentication) may be compromised.