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RPC Knowledge Base

RPC documentation entries

Explore practical RPC guides for developers, builders, and teams creating reliable Web3 applications and growing blockchain ecosystems with OnFinality.

Blockchain InfrastructureSolana

Solana Indexer: RPC, Historical Data & Indexing Architecture

A Solana indexer ingests blockchain data—slots, blocks, transactions, and account state—and transforms it into a queryable format for applications. The core decision is ingestion: ...

RPC Provider SelectionScroll

Scroll RPC Provider: How to Select Infrastructure for Your dApp

Choosing a Scroll RPC provider means balancing latency, reliability, and data access. This guide covers Scroll’s chain settings, evaluation criteria for production use, and code ex...

Network RPCMoonbeam

What are the Moonbeam RPC endpoints and which provider should I use?

Moonbeam Mainnet uses chain ID 1284 (0x504) with GLMR as the native token. Public RPC endpoints include https://rpc.api.moonbeam.network, https://moonbeam.drpc.org, and https://moo...

Network RPCArbitrum

Arbitrum API: Endpoints, Methods, and Production Tips

The Arbitrum API lets developers interact with Arbitrum One and Arbitrum Nova using standard Ethereum JSON-RPC methods, with full EVM compatibility. This article covers chain setti...

Network RPCSORA

What should I know about SORA network RPC endpoints?

SORA is a blockchain monetary system built on Substrate, offering a decentralized framework for digital money. Developers building on SORA need reliable RPC endpoints for reading c...

Blockchain Infrastructure

Public RPC Nodes: When to Rely on Free Endpoints and When to Upgrade

Public RPC nodes are free, shared endpoints that let anyone interact with a blockchain without running their own node. They are great for prototyping and testnets but can become un...

Network RPCPolkadot

Polkadot Network Migration: What's Changing and How It Affects Your RPC Endpoints?

The Polkadot Asset Hub Migration (AHM) moved core network functions—balances, staking, and governance—from the Relay Chain to the Asset Hub system parachain. For RPC users, this me...

RPC Provider Selection

How do I evaluate the best blockchain JSON-RPC API solutions?

A blockchain JSON-RPC API gives your dApp read/write access to a network without running a full node. But not all providers are equal—latency, archive support, WebSocket availabili...

Blockchain Infrastructure

Smart Contract Security Best Practices: A Developer's Checklist

Learn the essential smart contract security best practices for Solidity developers, including reentrancy guards, access control, and safe math. Discover how infrastructure choices ...

RPC Provider SelectionOptimism

How to Find the Most Reliable Optimism RPC Provider

Looking for the most reliable Optimism RPC provider? Reliability goes beyond stated uptime percentages. This guide covers key metrics like latency distribution, sync health, archiv...

Network RPCKusamaAsset Hub

Asset Hub Kusama RPC Endpoint: How to Connect and Use It

Asset Hub Kusama (formerly Statemine) is a system parachain on Kusama for low-cost asset creation and transfers. This article provides the chain settings, available RPC methods, an...

RPC Provider Selection

How do I choose an RPC provider for NFT projects?

NFT applications—minting platforms, marketplaces, and gaming tools—depend on fast, reliable RPC endpoints to submit transactions and fetch metadata. The wrong provider can cause fa...

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