“…Not all BC technologies can satisfy non-financial applications, as cryptocurrency is still the core substance of the majority of BC technologies, except the few as shown in Table8. The results showed that the most used BC technology is Ethereum [42]- [44], [47], [48], [51], [52], [55], [58], [59], [63]- [65], which is a cryptocurrencybased permissionless peer-to-peer network, followed by Hyperleger Fabric [46], [49], [50], [53], [54], [56], [57], [60]- [62], which is a permissioned BC technology. In permissioned BCs, only chosen and known participants can access data, whereas in permissionless BCs, all participants in the network can access data.…”