1. Iroha 개요

1.1. Iroha의 주요 특징은 무엇인가?

  • 간단한 배포(deployment) 및 유지보수(maintenance)
  • 개발자들을 위한 다양한 라이브러리
  • 역할(Role) 기반의 엑세스 컨트롤
  • Modular design, driven by command–query separation principle
  • 에셋과 identity 관리

저희는 아래 사항들을 집중적으로 개선하기 위해 노력합니다.

  • 신뢰성(Reliability) - 장애 허용(Fault Tolerance), Recoverability
  • Performance Efficiency (in particular time-behavior and resource utilization)
  • Usability (learnability, user error protection, appropriateness recognisability)

1.2. Where can Iroha be used?

Hyperledger Iroha is a general purpose permissioned blockchain system that can be used to manage digital assets, identity, and serialized data. This can be useful for applications such as interbank settlement, central bank digital currencies, payment systems, national IDs, and logistics, among others.

For a detailed description please check our Use Case Scenarios section.

1.3. 비트코인과 이더리움과는 어떤 점이 다른가?

Bitcoin and Ethereum are designed to be permissionless ledgers where anyone can join and access all the data. They also have native cryptocurrencies that are required to interact with the systems.

In Iroha, there is no native cryptocurrency. Instead, to meet the needs of enterprises, system interaction is permissioned, meaning that only people with requisite access can interact with the system. Additionally, queries are also permissioned, such that access to all the data can be controlled.

One major difference from Ethereum, in particular, is that Hyperledger Iroha allows users to perform common functions, such as creating and transferring digital assets, by using prebuilt commands that are in the system. This negates the need to write cumbersome and hard to test smart contracts, enabling developers to complete simple tasks faster and with less risk.

1.4. 다른 Hyperledger 프레임워크나 다른 권한 기반 블록체인과 무엇이 다른가?

Iroha has a novel, Byzantine fault tolerant consensus algorithm (called YAC [1]) that is high-performance and allows for finality of transactions with low latency. Other frameworks either focus more on probabilistic consensus algorithms, such as Nakamoto Consensus, or sacrifice Byzantine fault tolerance.

Also, Iroha's built-in commands are a major benefit compared to other platforms, since it is very simple to do common tasks such as create digital assets, register accounts, and transfer assets between accounts. Moreover, it narrows the attack vector, improving overall security of the system, as there are less things to fail.

Finally, Iroha is the only ledger that has a robust permission system, allowing permissions to be set for all commands, queries, and joining of the network.

[1]Yet Another Consensus

1.5. Iroha 기반의 어플리케이션을 어떻게 만들 수 있나?

In order to bring the power of blockchain into your application, you should think first of how it is going to interface with Iroha peers. A good start is to check Core Concepts section, explaining what exactly is a transaction and query, and how users of your application are supposed to interact with it.

We also have several client libraries which provide tools for developers to form building blocks, such as signatures, commands, send messages to Iroha peers and check the status.