RPC documentation entries
Explore practical RPC guides for developers, builders, and teams creating reliable Web3 applications and growing blockchain ecosystems with OnFinality.
Arbitrum Public RPC: Endpoints, Chain Settings, and Provider Selection
Arbitrum One and Arbitrum Sepolia public RPC endpoints let developers connect wallets and dApps without running a node. This article covers official endpoints, chain settings, and ...
What are Arbitrum nodes and how should you run or access them?
Arbitrum nodes are the software clients that maintain the state of Arbitrum chains like Arbitrum One and Arbitrum Sepolia. You can run your own full or archive node to independentl...
What is SORA Network?
SORA is a blockchain network focused on creating a decentralized monetary system. It uses the XOR token and on-chain governance to let token holders decide how to allocate resource...
What is the peaq blockchain and how do you build on it?
peaq is a layer-1 blockchain designed for the Machine Economy, powering Decentralized Physical Infrastructure Networks (DePINs) and machine-related real-world assets. It provides i...
What is a Bitcoin Testnet RPC and how do you use it?
Bitcoin Testnet RPC endpoints let developers connect to a Bitcoin test network for development and testing without risking real funds. This article explains what Bitcoin Testnet RP...
What is Polygon finality and how does it affect your dApp?
Polygon finality is the point at which a transaction becomes irreversible on the Polygon PoS chain. With the Heimdall v2 upgrade, finality now occurs in about 5 seconds, down from ...
What is a Polygon node and how do you run or connect to one?
A Polygon node is a computer running the Polygon PoS client stack—Bor (execution) and Heimdall (consensus)—that maintains a copy of the chain and serves RPC requests. You can run y...
Optimism RPC List: Public Endpoints, Chain Settings, and Production Providers
This page lists public Optimism RPC endpoints, chain settings for OP Mainnet and Optimism Sepolia, and guidance on choosing a production-grade RPC provider. Public endpoints are ra...
What are the latest Solana RPC updates and how do they affect your dApp?
Solana RPC updates include new JSON-RPC methods, changes to existing endpoints, and shifts in how public and managed infrastructure handle load. Staying current matters because Sol...
What is a Moonbeam node and when should you run one?
A Moonbeam node is a full client for the Moonbeam network, an Ethereum-compatible parachain on Polkadot. Running one gives you local RPC access, block production, and deeper contro...
Klaytn API: What should developers know about RPC, KAS, and node infrastructure?
Klaytn, now rebranded as Kaia, is an EVM-compatible Layer 1 blockchain. Developers interact with it through JSON-RPC endpoints, the Klaytn API Service (KAS) for higher-level REST A...
Best Ethereum RPC Services for Performance Monitoring in 2025
Performance monitoring for Ethereum RPC endpoints means tracking latency, error rates, throughput, and method-level behavior over time. This article explains what to measure, how t...
Ethereum
Solana
Polygon
Base
Arbitrum
BNB Chain
Polkadot
Optimism
