Guides

Mainnet guides

Search-focused references for chain IDs, public RPC endpoints, explorers, network setup, and the difference between production and test blockchain environments.

Answer first

Fast mainnet lookup guides

Use the chain ID list for decimal and hex network IDs, the mainnet RPC list for public RPC URLs and source docs, and the EIP-3085 guide for text-only wallet_addEthereumChain JSON examples. For MegaETH specifically, use the status page for chain ID 4326 and the current RPC URL.

Chain ID list Mainnet RPC list EIP-3085 JSON MegaETH status

chain ID, network ID, wallet setup

Chain ID list

Decimal and hex mainnet chain IDs with RPC URLs, gas tokens, explorers, and source documentation.

mainnet RPC, RPC URL, public endpoint

Mainnet RPC list

Source-cited public RPC URLs, chain IDs, explorers, source docs, and production safety notes.

EIP-3085, wallet_addEthereumChain, wallet config JSON

EIP-3085 wallet config JSON

Copy-ready wallet_addEthereumChain JSON examples generated from source-cited chain IDs, RPC URLs, explorers, and gas tokens.

ethereum mainnet rpc, public vs private

Ethereum mainnet RPC: public vs private

Chain ID 1, public Ethereum RPC context, and when a dedicated provider endpoint is a better operational fit.

base rpc url, base mainnet rpc

Base mainnet RPC comparison

Base chain ID 8453, public Base RPC, and factual notes for Alchemy, QuickNode, and dedicated provider endpoints.

megaeth mainnet, megaeth chain id

MegaETH launch FAQ

MegaETH chain ID 4326, mainnet RPC URL, source records, and launch-context boundaries.

base chain id, base rpc url

Base chain ID, RPC URL, and copy config

Copy Base mainnet chain ID 8453, public RPC endpoint, gas token, explorer, source docs, and wallet config fields.

megaeth chain id, megaeth mainnet rpc url

MegaETH chain ID, RPC URL, and copy config

Copy MegaETH mainnet chain ID 4326, public RPC endpoint, gas token, explorer, source docs, and setup cautions.

polygon chain id, polygon rpc url

Polygon chain ID, RPC URL, and copy config

Copy Polygon PoS chain ID 137, public RPC endpoint, POL gas token, Polygonscan explorer, source docs, and setup cautions.

arbitrum chain id, arbitrum rpc url

Arbitrum One chain ID, RPC URL, and copy config

Copy Arbitrum One chain ID 42161, public RPC endpoint, ETH gas token, Arbiscan explorer, source docs, and setup cautions.

avalanche c-chain chain id, avalanche rpc url

Avalanche C-Chain chain ID, RPC URL, and copy config

Copy Avalanche C-Chain chain ID 43114, public RPC endpoint, AVAX gas token, Snowscan explorer, source docs, and setup cautions.

optimism chain id, op mainnet rpc url

OP Mainnet chain ID, RPC URL, and copy config

Copy OP Mainnet / Optimism chain ID 10, public RPC endpoint, ETH gas token, explorer, source docs, and setup cautions.

zksync era chain id, zksync rpc url

ZKsync Era chain ID, RPC URL, and copy config

Copy ZKsync Era chain ID 324, public RPC endpoint, ETH gas token, explorer, source docs, and setup cautions.

linea chain id, linea rpc url

Linea chain ID, RPC URL, and copy config

Copy Linea chain ID 59144, public RPC endpoint, ETH gas token, Lineascan explorer, source docs, and setup cautions.

unichain chain id, unichain rpc url

Unichain chain ID, RPC URL, and copy config

Copy Unichain chain ID 130, public RPC endpoint, ETH gas token, explorer, source docs, and setup cautions.

EVM mainnets, Ethereum-compatible chains

EVM mainnets

Ethereum-compatible mainnets with numeric chain IDs, RPC URLs, explorers, and source links.

L2 RPC list, Ethereum L2 chain IDs

L2 mainnet RPC list

Source-cited Ethereum L2 RPC URLs, chain IDs, explorers, gas tokens, and setup cautions.

block explorer list, mainnet explorers

Block explorer list

Source-cited block explorer links for mainnet chains, grouped with chain IDs and network setup context.

RPC endpoint vs node provider

Plain-English differences between a raw RPC endpoint URL, a public RPC, and a dedicated node provider.

public RPC safety, RPC rate limits