Connect to the Ethereum blockchain through our high-performance JSON-RPC infrastructure. Enjoy 99.9% uptime, ultra-low latency, and enterprise-grade support for DeFi, NFT, trading, and Web3 applications.
Requests per Day
Network Uptime
Average Response Time
Technical Support
Technical characteristics and available endpoints
Mainnet & Testnet Support — Sepolia, Holesky
Ethereum is the leading smart-contract blockchain powering the majority of DeFi protocols, NFT ecosystems, and Web3 applications. After the 2022 transition to Proof of Stake (The Merge), Ethereum became more energy-efficient while maintaining decentralization and security.
https://rpc.crypto-chief.com/ethereum/{YOUR_API_KEY}
wss://rpc.crypto-chief.com/ethereum/ws/{YOUR_API_KEY}
Replace {YOUR_API_KEY} with your actual API key from the dashboard.
Understanding the technology powering Web3
An Ethereum RPC (Remote Procedure Call) node is a specialized server that provides an interface for interacting with the Ethereum blockchain. It acts as a bridge between your application and the decentralized network, enabling you to send transactions, read smart-contract data, query balances, and execute blockchain operations without running a full node yourself.
Ethereum uses the JSON-RPC protocol — a standardized method for remote procedure calls encoded in JSON. When your DeFi app, NFT marketplace, or wallet needs blockchain data, it sends a JSON-RPC request to an RPC endpoint. The node processes the request, interacts with Ethereum, and returns the result.
A typical request cycle:
Running a full Ethereum node requires powerful hardware, 2+ TB of disk space, stable high-bandwidth internet, and constant maintenance. Syncing the blockchain takes days, and keeping it updated requires 24/7 monitoring.
RPC providers solve this by offering:
Modern RPC infrastructures use multi-layer architectures: load balancers, caching layers, high-performance RPC servers, and fully synchronized Ethereum nodes that store the entire blockchain.
Ethereum’s JSON-RPC specification defines the methods all nodes must support — including eth_blockNumber, eth_getBalance, eth_call, eth_sendRawTransaction, eth_getLogs, and many others.
HTTPS endpoints are perfect for traditional request-response operations — sending transactions, reading state, and querying history.
WebSocket endpoints (WSS) enable live, real-time subscriptions to new blocks, logs, mempool events, NFT mints, and price updates — essential for trading bots, dashboards, and monitoring tools.
Quick start for developers
Our Ethereum RPC nodes fully support all standard JSON-RPC methods defined by the Ethereum specification. The most commonly used methods include:
const { ethers } = require('ethers');
const provider = new ethers.JsonRpcProvider('https://rpc.crypto-chief.com/ethereum/YOUR_API_KEY');
const blockNumber = await provider.getBlockNumber();
console.log('Latest block:', blockNumber);
const balance = await provider.getBalance('0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb');
console.log('Balance:', ethers.formatEther(balance), 'ETH');from web3 import Web3
w3 = Web3(Web3.HTTPProvider('https://rpc.crypto-chief.com/ethereum/YOUR_API_KEY'))
print('Connected:', w3.is_connected())
latest_block = w3.eth.block_number
print('Latest block:', latest_block)const { ethers } = require('ethers');
const provider = new ethers.WebSocketProvider('wss://rpc.crypto-chief.com/ethereum/ws/YOUR_API_KEY');
provider.on('block', (blockNumber) => console.log('New block:', blockNumber));https://rpc.crypto-chief.com/ethereum/YOUR_API_KEYwss://rpc.crypto-chief.com/ethereum/ws/YOUR_API_KEYEnterprise-grade Web3 infrastructure for your application
Optimized multi-region infrastructure delivering <50ms latency for most requests with intelligent routing and advanced caching.
TLS-encrypted endpoints, modern security protocols, DDoS protection, and continuous audits to protect your data and traffic.
Real-time monitoring of request volume, response times, methods, and error rates via an advanced analytics dashboard.
Nodes deployed across North America, Europe, Asia, and Oceania deliver ultra-low latency and geographic redundancy.
Infrastructure automatically scales up during peak traffic and scales down when load decreases — seamless performance at any size.
A team of Web3 experts available around the clock via chat, email, and phone. Average first response time under 5 minutes for paid plans.
Ethereum RPC nodes power thousands of Web3 use cases
Our infrastructure supports a wide spectrum of blockchain applications — from DeFi and trading platforms to NFT marketplaces, wallets, bots, and analytics. Whether you're building an MVP or a global enterprise product, our nodes deliver stability, speed, and scalability.
DEXs, lending platforms, yield farming protocols, and liquidity aggregators rely on fast and reliable blockchain communication. Our nodes deliver instant price data, balance checks, contract interactions, and ultra-fast swaps. Archive support enables historical analytics and APY calculations.
NFT platforms require live updates for minting, selling, and transferring tokens. WebSocket endpoints provide instant Transfer event streaming, new listings, and metadata refresh. Optimized performance ensures smooth user experience and real-time interactions.
Web3 wallets depend on RPC to fetch balances, read token data, estimate gas fees, and send transactions. Our nodes support all essential wallet operations — from ETH transfers to ERC-20 token interactions — with extremely low latency.
Explorers, analytics dashboards, and blockchain intelligence platforms rely on archive nodes for deep historical queries. Our infrastructure supports high-volume data extraction, batch requests, and large-scale analysis across long periods.
Arbitrage bots and MEV searchers require ultra-fast mempool access and instant transaction propagation. Our globally optimized nodes give your strategy the speed edge it needs to compete in high-frequency environments.
Web3 games use blockchain for ownership, assets, in-game economies, and on-chain interactions. Our low-latency nodes handle thousands of requests per second — inventory checks, item mints, contract calls, and player actions.
Start building on Web3 — no credit card.
Flexible pay-as-you-go for any workload.
From $500 monthly plus 20% extra value.
Tailored solution for expert builders
All Subscription features plus: