Japan's First Cryptocurrency “MONA Coin” and the World of “Mona Cards” Shaped by Its HistoryIntroductionIn recent years, alongside the evolution of blockchain technology, cryptocurrencies and NFTs (non-fungible tokens) have been permeating our lives. Among these, Japan's first cryptocurrency, “MONA Coin,” has built its own unique community and culture, and remains beloved by many people today. Furthermore, the NFT “Mona Card,” issued on the MONA Coin blockchain, is attracting attent...