The Stack Japan Open Chain Builders Ship On

Quicknode is a leading Japan Open Chain RPC provider, serving mainnet over low-latency JSON-RPC from 17+ global regions with a 99.99% uptime SLA. You get private JSON-RPC and WSS endpoints, full archive data, the debug_* namespace, and real-time Streams and Webhooks, on a platform that handles 500B+ requests a month across 80+ chains.

Japan Open Chain is an Ethereum-compatible layer 1 operated by a consortium of Japanese enterprises under the Japan Blockchain Foundation, running the Geth client with trusted validators. It uses JOC as its native token. Mainnet runs on chain ID 81.

Create a free Quicknode account, select Japan Open Chain, and a private RPC URL is generated instantly. You get full method coverage and rate limits that scale with your plan. No credit card is required for the free tier.

A Japan Open Chain node is a server that validates blocks and answers JSON-RPC requests for the Japan Open Chain network. Running your own means managing sync, storage, upgrades, and archive retention. With Quicknode you connect to a managed Japan Open Chain endpoint with HTTPS and WSS, full archive access, and a 99.99% uptime SLA, with no infrastructure to maintain.

Quicknode supports the full Japan Open Chain Ethereum JSON-RPC over HTTPS and WSS, including eth_call, eth_getLogs, eth_sendRawTransaction, et eth_subscribe, plus the debug_* namespace such as debug_traceTransaction et debug_traceBlockByNumber for deep transaction analysis. Real-time Streams and Webhooks complete the data stack.

Yes. Quicknode runs full archive nodes for Japan Open Chain mainnet with no pruning, plus the Debug API for debug_traceTransaction et debug_traceBlockByNumber. You can query historical state and trace transactions for indexing, simulation, and analytics.

Yes. Japan Open Chain is EVM compatible. Deploy existing Solidity contracts with Hardhat, Foundry, or Remix without modification, and use ethers.js, web3.js, viem, and @quicknode/sdk against your Quicknode endpoint exactly as you would on Ethereum.

Quicknode supports Japan Open Chain mainnet (chain ID 81). Create a free account to get a private mainnet endpoint with JSON-RPC and WSS in seconds, with no credit card required.

Quicknode serves Japan Open Chain from 17+ global regions behind a 99.99% uptime SLA, with automatic failover and low-latency routing. The same infrastructure handles 500B+ requests a month across 80+ chains, so your Japan Open Chain apps stay responsive under load.

Quicknode offers a free tier for Japan Open Chain with no credit card required, so you can get a mainnet endpoint in seconds. Paid plans scale with request volume and add higher rate limits, and enterprise plans add dedicated infrastructure and a 99.99% uptime SLA.

Japan Open Chain mainnet uses chain ID 81 and JOC as the native gas token. The testnet uses chain ID 10081. To add mainnet to a wallet, use your Quicknode RPC URL, chain ID 81, the currency symbol JOC, and the explorer at explorer.japanopenchain.org.

Use Quicknode Streams for backfill and real-time blocks, logs, and traces delivered to your datastore, and Webhooks for push notifications on addresses and events. For in-app subscriptions, connect over WSS and use eth_subscribe.

Japan Open Chain is built for enterprise and consumer apps in Japan: stablecoin and payment rails, NFTs and loyalty, and regulated apps that need a compliant, enterprise-operated EVM chain.