Japan Open Chain Integrates with SubQuery, an Leading Data Indexer

Japan Blockchain Foundation Co., Ltd. (CEO: Hidekazu Kondo), which operates and manages the Ethereum-Compatible Layer1 Public Blockchain 'Japan Open Chain (JOC),' is pleased to announce that SubQuery supports JOC with lightning quick indexer. As an important first step, we are pleased to share that we have completed our implementation of SubQuery's support for key data indexers and are ready to take advantage of it.


◽️ How it works

Developers building on Japan Open Chain can now harness SubQuery's versatile, high-speed, open, and decentralized data indexing solution. This empowers blockchain developers with crucial tools to efficiently manage and query on-chain data for their protocols and applications.
By providing developers with a tailor-made API, SubQuery simplifies backend operations. In this way, they can focus on developing their products and enhancing their user experiences without having to allocate resources toward constructing their indexing solutions.

◽️ Why Use SubQuery?

SubQuery makes it easy to build a custom API for your dApp or smart contracts in minutes, providing clean indexed data to any service. The excellent SubQuery developer experience is flexible, with the ability to make external API calls or import external libraries from within your mapping functions, and better controls to run your projects in your own infrastructure with automated DOS (denial of service) mitigation controls. Additionally, we have yet to make plans to sunset our managed service.

SubQuery is designed to be fast. This adds up when you’re indexing millions of ledgers, and is something to consider when choosing your indexer. SubQuery achieves this by using multi-threading and optimisation of the store to reduce costly database writes. With faster sync times, developers can iterate faster and deliver features to market quicker.

◽️ SubQuery’s Support for Japan Open Chain

We’re always striving to provide developers with the most comprehensive and efficient indexing experience possible, including the open-source SDK, tools, documentation, and developer support that the SubQuery ecosystem provides. Japan Open Chain is also supported in SubQuery’s enterprise level managed service, which provides enterprise-level infrastructure hosting and handles hundreds of millions of requests each day. 

— Sam Zou, Founder and CEO of SubQuery

Excited to announce our integration support with Japan Open Chain. Our indexing service provides advanced tools, empowering their community to innovate and drive Web3 adoption in Japan.



— Hidekazu Kondo, Founder, Japan Open Chain 

Incorporating SubQuery into our platform accelerates data access for developers on Japan Open Chain, streamlining their experience within our growing ecosystem. This empowers them to build more dynamic projects more easily and accurately on a public chain operated by a leading company.


◽️ About Japan Open Chain


Japan Open Chain (JOC) is an Ethereum-compatible Layer1 Public Blockchain operated by leading companies including CORGEAR, a startup within Sony Group, NTT Communications from NTT Group, Dentsu, TIS, and other prominent and reputable companies. The chain focuses on legal and technical practicality, making it the most suitable public blockchain for business use cases. Designed as a fully Ethereum-compatible blockchain infrastructure, it enables anyone in the world to use it confidently, safely, and affordably. It is particularly ideal for applications in the financial and business sectors.

Website | X (Twitter) | Discord

【Main Features】

  • Operated safely and securely by Japanese companies.
    • Validators consist of companies that have passed appropriate screening.
    • Operating in compliance with Japanese law, providing a clear legal basis.
  • Ethereum fully compatible chain utilizing PoA (Proof of Authority)
    • Fully compatible with Ethereum, allowing for the use of Ethereum protocol-developed tools and smart contracts as-is.
    • The Proof of Authority (PoA) algorithm achieves a balance between decentralization and scalability, incorporating practical considerations into its design.
    • Provides high security performance thanks to adequate decentralization, network stability and controllability, and is energy-efficient and environmentally friendly.
  • Optimal Design for web3 Business with Fast and Affordable Fees
    • Achieves processing speeds tens of times faster than the Ethereum mainnet.
    • Fees for issuing NFTs are less than 1 yen per transaction.
    • Eliminates settlement risk through deterministic finality.
  • Projects by Large Corporations and Local Governments Underway
    • Financial DX projects through the issuance of Japan-based stablecoins by banks.
    • Various NFT projects by local governments, including "Digital Citizen Certificates".

◽️ About SubQuery

SubQuery Network is innovating web3 infrastructure with tools that empower builders to decentralize the future. Our fast, flexible, and open data indexer supercharges dApps on over 160 networks, enabling a user-focused web3 world. Soon, our Data Node will provide breakthroughs in the RPC industry, and deliver decentralization without compromise. We pioneer the web3 revolution for visionaries and forward-thinkers. We’re not just a company — we’re a movement driving an inclusive and decentralized web3 era. Let’s shape the future of web3, together.

Linktree | Website | Discord | Telegram | Twitter | Blog | Medium | LinkedIn | YouTube