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Connect to Japan Open Chain mainnet and every active testnet with low-latency RPC, full archive data, debug and trace APIs, and real-time Streams. The complete Japan Open Chain data stack, managed from a single Quicknode dashboard.
Japan Open Chain builders need more than basic RPC. Quicknode runs the full surface: low-latency JSON-RPC, full archive with debug and trace, and real-time Streams, all from one dashboard.
Multiple ways to access Japan Open Chain data, from a single eth_call to real-time streams. Pick the interface, ship faster.
Standard JSON-RPC over HTTPS and WSS on Japan Open Chain mainnet and testnet. Every EVM method supported, including eth_call, eth_getLogs, eth_getBalance, eth_sendRawTransaction, and eth_subscribe, with predictable rate limits.
Japan Open Chain is an Ethereum-compatible layer 1 running the Geth client, so the tooling you already know works unchanged. ethers.js, web3.js, viem, and web3.py all hit a Quicknode Japan Open Chain endpoint the same way they hit Ethereum. Same methods, same SDK, just a different RPC URL.
Point your existing Ethereum codebase at a Quicknode Japan Open Chain endpoint and deploy. Contracts, libraries, and tooling carry over.
Open MetaMask, go to Settings, Networks, Add Network, and enter your Quicknode Japan Open Chain RPC URL with the details on the right. Save, and MetaMask routes through your private Quicknode endpoint instead of a rate-limited public RPC.
Docs, guides, and runnable sample apps for every Japan Open Chain workload. Clone, customize, and ship.
Full reference for every Japan Open Chain JSON-RPC method, WebSocket subscription, and the debug and trace namespaces. Code examples for @quicknode/sdk, ethers.js, web3.js, and viem.
Indexes token transfers on an EVM chain using Quicknode Streams and delivers them to your own datastore and API. Works unchanged on Japan Open Chain.
From your first Japan Open Chain endpoint to mission-critical production workloads, Quicknode scales with you. Get started in minutes.
Spin up your Japan Open Chain endpoint and ship. The free tier covers prototyping and small production loads, no credit card required.
Dedicated Japan Open Chain infrastructure, contractual SLAs, priority support, and procurement-ready terms for wallets, exchanges, trading firms, and high-volume protocols.
常見問題
Still have unanswered questions? Reach out to support and the Quicknode team can help you find answers.
Query, subscribe, and stream Japan Open Chain data with low latency. From a single eth_call to billions of rows of historical logs, you get the right interface for the job.
The Ethereum toolchain you already know works unchanged on Japan Open Chain. Deploy contracts, manage endpoints, and ship from one Quicknode account.
Full historical Japan Open Chain state on mainnet with no pruning. Query any block, balance, or contract state from genesis over HTTPS and WSS.
Backfill and real-time Japan Open Chain blocks, logs, and traces delivered to your datastore with guaranteed reliability. Filter upstream, receive only the data you actually need.
具備傳送保證、重試機制及內建重組處理功能的事件驅動式警示。訂閱特定地址、合約事件或鏈上條件，並即時做出反應。
Trace transactions and inspect execution with the debug namespace, including debug_traceTransaction and debug_traceBlockByNumber, for deep analysis and reliable indexing.
Subscribe to new Japan Open Chain blocks and logs over a persistent WSS connection with eth_subscribe. Push updates the moment they land, with no polling.
eth_call, eth_getLogs, eth_sendRawTransaction, and eth_subscribe all behave exactly as they do on Ethereum.
// Your Ethereum code, pointed at Japan Open Chainimport { createPublicClient, http } from "viem";const client = createPublicClient({// Japan Open Chain, chain ID 81chain: { id: 81, name: "Japan Open Chain" },transport: http(QUICKNODE_JOC_URL)});const block = await client.getBlockNumber();// Same methods, same SDK. Japan Open Chain is EVM compatible.
Runnable sample apps and starter kits across Quicknode-supported chains, including Japan Open Chain. Clone one and ship.
"We run a lot of service dependencies. Quicknode's Admin API was one of the first we could plug directly into our burn rate dashboards. The MCP slots right into our cross-service incident triage stack alongside our other providers. Solid tooling that respects your time."Liam Harris，Defi App 營運總監