Testnet now · real networks on the roadmap

Launch your own
blockchain in seconds.

Chainforge forks Ethereum, Base, Arbitrum, or Optimism into an isolated private chain — with a funded wallet, a ready RPC endpoint, and a built-in explorer. No infra, no waiting.

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Token contract0xa14e9E8bD6b9E5bfdE7d55e1093BB2Cfe47c9199
chainforge · /app
  1. 1Connect your wallet & sign in
  2. 2Name it and pick a network to fork
  3. 3Get a funded chain in seconds
Ethereum logoDemo Chain
Example
Forked from
Ethereum
Chain ID
84219371
Wallet
funded · 100 test ETH
RPC
…/rpc/84219371
Explorer
/app/chain/84219371

4

Base networks

~3s

To spin up

100 ETH

Funded instantly

$0

Cost per chain

What you get

Everything a real chain needs

Disposable on demand, production-shaped from the first second.

Isolated private chain

Every chain is its own sandbox with a unique chain ID. Nothing leaks between them.

Instantly funded wallet

Your address is pre-loaded with 100 test ETH the moment the chain boots.

Built-in explorer

Browse blocks and transactions in a branded explorer — no third-party tooling.

Ready RPC endpoint

A live JSON-RPC URL served from our own domain. Paste it anywhere.

Deploy any EVM contract

Forge, Hardhat, viem, ethers — if it speaks EVM, it just works.

Connect any wallet

One click adds the chain to MetaMask or any EIP-1193 wallet.

Beyond a testnet

Mainnet-fork superpowers

Your chain is a live copy of mainnet state — so you can do things no fresh network can. Real protocols, real balances, full control.

Instant faucet

Top up any address with test ETH in one click — no faucets, no waiting.

Impersonate anyone

Send transactions as any wallet — whales, multisigs, DAOs. Impossible on a real chain.

State cheat codes

Set balances, storage, code, and nonces on the fly to reproduce any scenario.

Time travel

Jump forward in time and mine blocks to test vesting, timelocks, and auctions.

Instant snapshots

Snapshot state, run an experiment, and revert in milliseconds. Reset is free.

Pre-funded dev accounts

Ten ready-to-use accounts with known keys — wire up scripts in seconds.

One command surface

One chain, everything wired

Create a chain and these are provisioned and connected for you — automatically, in seconds. Nothing to configure.

Your chainisolated fork · unique idConnect & sign inForked mainnet stateFunded walletFaucetRPC endpointBlock explorerDeveloper consoleDev accounts
Base networks

Fork the chain you build on

Pick a source network and get an isolated copy of its state — yours to break, redeploy, and throw away.

Ethereum logoEthereumThe original EVM mainnet.
Base logoBaseCoinbase's L2 network.
Arbitrum logoArbitrumOptimistic rollup L2.
Optimism logoOptimismThe OP Stack L2.
Who it's for

Built for builders

Prototyping

Ship a contract against real forked state before you touch a public testnet.

Demos

Hand a client a live chain and a funded wallet — no faucet runaround.

Hackathons

Spin up a fresh chain per team in seconds and tear it down when you're done.

Learning

Break things safely. Reset by deleting and creating another.

Where we're headed

Start on testnet, expand to real networks

Phase 1Now

Testnet chains, instantly

  • Forked Ethereum, Base, Arbitrum & Optimism
  • Funded wallet + RPC + explorer
  • Disposable on demand
Phase 2Next

Persistence & power

  • Long-lived chains
  • Custom gas tokens
  • More networks & teams
Phase 3Later

Real networks

  • Start on testnet, expand to real networks
  • Managed mainnet deployments
  • Enterprise controls

Your chain is one click away.

Connect a wallet and forge a fresh blockchain — funded, explorable, and ready for your first transaction.

Launch Chainforge