The problem of legal regulation of cross-border private law relations in the field of intellectual property implemented through blockchain technologies requires thorough scrutiny on behalf of both legal theorists and practitioners. The use of blockchain technologies is relevant for both copyright and industrial property issues. A practical method to establish a technological basis for the protection of intellectual property rights that is used for their storing and for other purposes provides for implementation of so-called blockchain ledgers. At the same time, the main function of blockchain ledgers is to protect the rights of copyright holders and to provide them with an opportunity to use results of their intellectual activity simultaneously in several jurisdictions. In this respect, the use of distributed ledger technologies should be regulated by a system of rules established by the participants of legal relations within the framework of implementation of certain cross-border private law relations. This article considers, inter alia, lex registrum as a system of rules regulating relations under consideration.