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How to implement RPC load balancing for blockchain apps: round-robin, latency-based and method-based routing, failover, and provider vs app-level strategies.
Read ERC-20 token balances, allowances, transfer history, and approvals directly via RPC using ethers.js. Covers Multicall3 batching, event indexing, and production patterns.
Configure viem and wagmi to use a custom RPC endpoint. Covers createPublicClient, createWalletClient, transport setup, WebSocket support, and multi-chain configuration.
Read NFT ownership, metadata, and transfer history directly via RPC using ethers.js. Covers ERC-721 and ERC-1155 patterns, tokenURI, batch ownership checks, and event indexing.
Compare web3.js and ethers.js for Ethereum development. Covers bundle size, API design, TypeScript support, ethers.js v6 changes, and which to choose for your project.
Real-time Ethereum event listening with ethers.js v6 and WebSocket. Covers contract events, new block subscriptions, log filters, reconnection handling and production patterns.
Choosing the wrong RPC provider can break your dApp. Here are the 7 factors that actually matter when evaluating blockchain RPC infrastructure.
Building on more than one chain? Here's how to manage multi-chain RPC endpoints, avoid common pitfalls, and keep your infrastructure simple as you scale.
Real cost breakdown: running your own Ethereum node vs using an RPC provider. Hardware, maintenance, syncing time, and when each makes sense. Updated 2026.
Connect to the Ethereum Hoodi Beacon Chain REST API. Covers validator lifecycle testing, liquid staking, restaking workflows, curl and JavaScript examples for the Holesky replacement testnet.
Connect to the Ethereum Sepolia Beacon Chain REST API. Covers testnet withdrawal testing, validator queries, finality checkpoints, curl and JavaScript examples.
Connect to Ethereum Sepolia testnet with ethers.js, viem, Web3.py, curl. Covers chain ID, endpoint setup, smart contract deployment, CI/CD pipelines, common issues.
A technical guide to Arbitrum RPC endpoints for developers in 2026. Covers HTTP vs WebSocket, Arbitrum-specific methods, ethers.js setup, common issues, how to choose a reliable provider.
A clear, practical guide to smart contracts for developers in 2026: how they work, how they're written, how you interact with them via RPC, and what their real limitations are.
Connect to the Ethereum Beacon Chain REST API in 2026. Practical guide covering key endpoints, curl examples, JavaScript fetch, Python requests plus common issues for staking and validator use cases.
Connect to Ethereum Hoodi testnet with ethers.js, Web3.py, curl. Covers RPC methods, faucet links, smart contract testing workflow, common issues.
A complete 2026 developer guide to Ethereum RPC endpoints. Learn how to connect with ethers.js, Web3.py, and curl, use key JSON-RPC methods, handle EIP-1559 fees, finality tags, fix common production issues.
Connect to Scroll RPC endpoints with ethers.js, Web3.py, curl. Covers ZK-EVM type 1 architecture, finality stages, L1 data fees, common production issues.
A technical guide to zkSync Era RPC endpoints for developers in 2026. Covers ZK rollup mechanics, zks_ methods, ethers.js and Web3.py setup, account abstraction, Paymaster patterns, common issues, how to choose a provider.
Connect web3.py to a custom RPC endpoint. Covers HTTP and WebSocket providers, contract reads, event filtering, async support, and production configuration patterns.
The Ethereum JSON-RPC methods you will actually use. Covers eth_call, eth_getLogs, eth_getBalance, eth_sendRawTransaction and more with real code examples.
Step-by-step guide to connecting to Ethereum using ethers.js v6. Covers HTTP provider, WebSocket provider, signing transactions, reading contracts and error handling.
What is a blockchain node and how does your application connect to one? Developer-first guide covering node types, RPC connections, and when to self-host vs use a provider.