# Ethereum RPC Node Reliable, Fast & Scalable 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. [Documentation](https://docs-rpc.crypto-chief.com/chains/ethereum) [Get a free endpoint ](https://auth.crypto-chief.com/registration) ##### 10 M+ Requests per Day ##### 99.9 % Network Uptime ##### < 100 ms Average Response Time ##### 24/7 Technical Support ## Specification Ethereum Network Technical characteristics and available endpoints ![Ethereum (ETH)](/img/protocols/eth.svg) ### Ethereum (ETH) Mainnet & Testnet Support β€” Sepolia, Holesky Chain ID 1 Protocol HTTPS / WSS Uptime 99.9% Block Time \~12s Consensus Proof of Stake EVM Compatible Yes 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. #### Key capabilities: - Full support for Solidity smart contracts - ERC-20, ERC-721, and ERC-1155 token standards - Rich developer tooling (Hardhat, Truffle, Remix) - Largest blockchain developer ecosystem - Support for major Layer 2 networks (Arbitrum, Optimism, Base, Polygon) #### πŸ”— RPC Endpoints HTTPS `https://rpc.crypto-chief.com/ethereum/{YOUR_API_KEY}` WSS `wss://rpc.crypto-chief.com/ethereum/ws/{YOUR_API_KEY}` Replace {YOUR\_API\_KEY} with your actual API key from the dashboard. ### Need testnet ETH? Try the Ethereum Faucet Free native testnet ETH and test USDT on **Sepolia** β€” claim instantly from your Crypto Chief dashboard before going to mainnet. [Open faucet](/faucet/ethereum-sepolia/) ## What is an Ethereum RPC Node? 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 through an ETH RPC endpoint or Ethereum RPC API. 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. ### How does Ethereum RPC work? Ethereum uses the Ethereum JSON-RPC protocol β€” a standardized method for remote procedure calls encoded in JSON. When your DeFi app, NFT marketplace, wallet, or Ethereum Web3 provider needs blockchain data, it sends a JSON-RPC request to an Ethereum RPC endpoint or Ethereum RPC URL. The node processes the request, interacts with Ethereum, and returns the result. **A typical request cycle:** 1. Your application creates a JSON-RPC request (e.g., eth\_getBalance). 2. The request is sent via HTTPS or WebSocket to an ETH RPC endpoint. 3. The node receives the request and queries the blockchain. 4. It retrieves the latest data from Ethereum. 5. The response is sent back in JSON format. ### Why do you need RPC nodes? 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:** - **Fully synced** nodes always up to date - **Globally distributed** endpoints for low latency - **Automatic scaling** under high load - **High availability** through redundancy - **DDoS protection** and hardened infrastructure Many developers today look for an Ethereum free RPC service to reduce infrastructure costs during testing and early-stage development. Others search for an Ethereum Infura alternative or Ethereum Alchemy alternative to improve decentralization, pricing flexibility, performance, or uptime reliability. ### Architecture & protocol 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. The Ethereum RPC API and JSON-RPC specification define the methods all nodes must support β€” including eth\_blockNumber, eth\_getBalance, eth\_call, eth\_sendRawTransaction, eth\_getLogs, and many others. ### HTTPS vs WebSocket endpoints **Ethereum RPC endpoints** are perfect for traditional request-response operations β€” 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 β€” essential for trading bots, dashboards, and monitoring tools. Developers comparing providers often search for the best Ethereum RPC 2026 solutions and reliable Ethereum RPC endpoints lists to evaluate latency, uptime, geographic coverage, archive support, and WebSocket performance. ## Technical Documentation Quick start for developers ### Supported RPC Methods Our Ethereum RPC nodes fully support all standard JSON-RPC methods defined by the Ethereum specification. The most commonly used methods include: - **eth\_blockNumber** β€” latest block number - **eth\_getBalance** β€” ETH balance of an address - **eth\_call** β€” read-only smart-contract calls - **eth\_sendRawTransaction** β€” send signed transactions - **eth\_getTransactionReceipt** β€” transaction receipt - **eth\_getTransactionByHash** β€” transaction info - **eth\_getLogs** β€” contract logs and events - **eth\_estimateGas** β€” gas estimation - **eth\_gasPrice** β€” current gas price - **eth\_subscribe** β€” WebSocket subscriptions (newHeads, logs, pendingTransactions) ### Code Examples πŸ’» #### JavaScript (ethers.js): ``` 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'); ``` πŸ’» #### Python (web3.py): ``` 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) ``` πŸ’» #### WebSocket Subscription β€” New Blocks: ``` 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)); ``` ### Limitations & Best Practices - **Rate Limits:** Free tier β€” 100,000 requests/day. - **Batch Requests:** Combine calls for efficiency. - **Caching:** Cache repeated eth\_call responses. - **Error Handling:** Always implement fallback logic. - **WebSocket Reconnect:** Auto-reconnect for WSS. - **API Key Security:** Never expose keys in frontend. ### Quick Start 1. Register and get your free API key. 2. Replace YOUR\_API\_KEY in code examples. 3. Use HTTPS endpoint: `https://rpc.crypto-chief.com/ethereum/YOUR_API_KEY` 4. Use WSS endpoint: `wss://rpc.crypto-chief.com/ethereum/ws/YOUR_API_KEY` 5. Start sending requests and track analytics in the dashboard. ## Why choose us? Enterprise-grade Web3 infrastructure for your application ### High Performance Optimized multi-region infrastructure delivering <50ms latency for most requests with intelligent routing and advanced caching. ### Security TLS-encrypted endpoints, modern security protocols, DDoS protection, and continuous audits to protect your data and traffic. ### Analytics & Monitoring Real-time monitoring of request volume, response times, methods, and error rates via an advanced analytics dashboard. ### Global Network Nodes deployed across North America, Europe, Asia, and Oceania deliver ultra-low latency and geographic redundancy. ### Auto-Scaling Infrastructure automatically scales up during peak traffic and scales down when load decreases β€” seamless performance at any size. ### 24/7 Support A team of Web3 experts available around the clock via chat, email, and phone. Average first response time under 5 minutes for paid plans. ## Examples of Use Ethereum RPC nodes power thousands of Web3 use cases Our infrastructure supports a wide spectrum of blockchain applications β€” 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. #### DeFi Protocols 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 Marketplaces 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. #### Crypto Wallets Web3 wallets depend on RPC to fetch balances, read token data, estimate gas fees, and send transactions. Our nodes support all essential wallet operations β€” from ETH transfers to ERC-20 token interactions β€” with extremely low latency. #### Analytics Platforms 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. #### Trading Bots & MEV 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. #### Blockchain Gaming Web3 games use blockchain for ownership, assets, in-game economies, and on-chain interactions. Our low-latency nodes handle thousands of requests per second β€” inventory checks, item mints, contract calls, and player actions. ## Got questions? we are here to help ## What is a blockchain RPC gateway? An RPC gateway allows applications to interact with blockchains by reading on-chain data, sending transactions, and executing smart-contract calls. ## How many blockchains are supported? Our multi-chain RPC platform supports 70+ networks including Ethereum, Polygon, BNB Chain, Solana, Tron, TON, Bitcoin, Avalanche, Arbitrum, and many others. ## Do you support both HTTPS and WebSocket connections? Yes. HTTPS for standard JSON-RPC calls, WebSocket for real-time subscriptions and event-driven applications. ## Can I start using the RPC Gateway for free? Yes β€” you can generate a free API key and begin testing on the free tier before upgrading to higher limits. ## How is reliability ensured across nodes? We use automatic failover, health checks, load balancing, and global routing to maintain fast and consistent uptime across all regions. ## How fast is the RPC Gateway? Our globally distributed nodes ensure consistently low-latency responses across North America, Europe, and Asia. ## What protocols and chains can I connect to? All major EVM and non-EVM networks β€” Ethereum, Polygon, BNB Chain, Solana, Tron, TON, Bitcoin, and more via a single API platform. ## How do I authenticate RPC requests? Use your personal API key in the request header. You can rotate or revoke API keys at any moment. ## Is the RPC Gateway suitable for production? Absolutely. It’s built for both development and enterprise-grade production workloads with strong uptime guarantees. ## How can I monitor usage and performance? Use our dashboard or analytics API to track request volume, latency, method distribution, and error rates in real time. ## How can I start using the RPC Gateway? Generate an API key, choose your network, and start making RPC calls via HTTPS or WebSocket β€” no additional configuration required. ## What protocols are supported? Standard JSON-RPC and WebSocket protocols compatible with all modern blockchain clients and developer tools. ## Pricing that grows with your needs. ### Free Start building on Web3 β€” no credit card. ##### $0 - 5 reqs/sec RPC - 5 reqs/min Unified API - 1 req/day AML - Ultimate chains - WSS, Statistics - Community support [Get started ](https://auth.crypto-chief.com/registration) ### Pay for use Flexible pay-as-you-go for any workload. ##### From $10 - 400 reqs/sec RPC - 300 reqs/min Unified API - 5 reqs/sec AML - EventStream - Ultimate chains - WSS, Whitelists, Statistics - Support portal [Get started](https://auth.crypto-chief.com/registration) ### Subscription From $500 monthly plus 20% extra value. ##### From $500 - 400 reqs/sec RPC - 300 reqs/min Unified API - 5 reqs/sec AML - EventStream - Ultimate chains - WSS, Whitelists, Statistics - Support portal [Get started ](https://auth.crypto-chief.com/registration) ### Enterprise Tailored solution for expert builders ##### Custom terms All Subscription features plus: - Flexible rate limits - Engineering team support - Custom SLA - Personal manager [Contact Sales ](/contact/)