Hyperledger Iroha was designed to be easy to integrate into IoT or infrastructural projects that require distributed ledger technology. Hyperledger Iroha has a simple, modular, domain-driven C++ architecture, an emphasis on client application development, and a new, crash fault-tolerant consensus algorithm called YAC. Hyperledger Iroha, a simple blockchain platform, allows you to create trusted, secure, fast applications using the power of permission-based Blockchain with Crash fault-tolerant Consensus. It is free and open-source. It works on Linux and Mac OS. There are many mobile and desktop libraries. Hyperledger Iroha, a permissioned general-purpose blockchain system, can be used for managing digital assets, identity, serialized data, and other related matters. This is useful for applications such interbank settlement, central banks digital currencies, payment system, national IDs, logistics, and many other things.