This study aims to explore the potential of blockchain technology in digitalization of documents used in foreign trade processes and to embody the advantages it can bring to customs clearance processes. The work is in two stages. In the first stage, the authors examined the document flow between the parties in customs clearance processes through three different digitalization scenarios using blockchain technology. They have come to the conclusion that rapid adaptation to innovations based on blockchain technology in the field of document management in international trade customs clearance processes is advantageous. In the second stage, they analyzed the priorities of the rational decision-making process with the NAHP method. The main challenges facing the transition to new technology are the need to train staff for new systems, the need to develop and improve new internal processes, the time spent reaching agreements with trading partners in the transition period, and the alignment of technological developments with legislation.