LitVM testnet (chain ID 4441) is the sandbox environment for the LitVM blockchain — the Litecoin Virtual Machine powered by Arbitrum Orbit and BitcoinOS. It mirrors the eventual LitVM mainnet exactly: the same EVM, the same contract APIs, the same DeFi infrastructure. The only difference is that testnet tokens have no monetary value, which means you can experiment, deploy, trade, and break things without risking real funds. Every dApp, contract, and tool on Lester Labs is live and fully functional on LitVM testnet.
LitVM testnet uses zkLTC as its gas token — not real LTC. You can get free test zkLTC from the LitVM testnet faucet. Testnet zkLTC has no real value and cannot be swapped for mainnet assets.
Any EVM-compatible wallet works on LitVM testnet. MetaMask is the most widely supported and recommended choice. Rabby, Coinbase Wallet, and Trust Wallet also work. Hardware wallets (Ledger, Trezor) can be used via WalletConnect or by importing the private key into a software wallet for testnet-only use. For development workflows, `wagmi` + `viem` integrations work out of the box. For Hardhat or Foundry testing, you can fork testnet state by pointing your JSON-RPC URL at the LitVM testnet RPC.
Click the network selector at the top of MetaMask, then click "Add network". Scroll to the bottom and click "Add a network manually".
Fill in exactly: Network name: LitVM Testnet New RPC URL: https://liteforge.rpc.caldera.xyz/infra-partner-http Chain ID: 4441 Currency symbol: zkLTC Block explorer URL: https://liteforge.caldera.xyz The RPC is provided by Caldera as a LitVM infrastructure partner and gives faster, more consistent responses than the public RPC.
Click Save. MetaMask will switch to LitVM testnet automatically. You will see "LitVM Testnet" appear in your network selector and the zkLTC balance displayed in your wallet.
Always verify the chain ID is 4441 before sending transactions. If your wallet connects to a different chain with the same ID (extremely unlikely), you could send test funds to the wrong place.
The primary method is the LitVM testnet faucet. Connect your wallet (MetaMask or Rabby), make sure you are on LitVM testnet (chain ID 4441), and claim your free test zkLTC. There is a per-wallet claim limit to prevent hoarding — sufficient for development and testing. For larger volumes needed during active development, contact the LitVM team via their Discord or Telegram channels. Some projects on LitVM also distribute test tokens directly from their own faucets. Once you have test zkLTC, you can interact with every Lester Labs dApp on testnet at zero cost.
Go to lester-labs.com/launch. Connect your wallet, fill in name, symbol, and supply, and deploy. The Token Factory costs 0.05 zkLTC. Your ERC-20 is live on LitVM testnet in under a minute.
Go to lester-labs.com/swap. You need two tokens to swap — use the Token Factory to create a second one. Approve the router, place your swap, and sign the transaction. The 0.30% fee is charged in test tokens only.
After creating a pair on /swap, go to lester-labs.com/locker to lock your LP tokens. Set an unlock date. The lock is permanent and immutably recorded on LitVM testnet.
Visit lester-labs.com/explorer to search for your wallet address, transaction hash, or any contract. Every interaction you have had is recorded and publicly verifiable on LitVM testnet.
LitVM testnet and mainnet will coexist: testnet is where projects and users experiment before committing real capital, and mainnet is where actual transactions settle. All Lester Labs contracts are deployed on testnet now. The same contracts will be deployed to LitVM mainnet at launch. Bookmark the LitVM testnet explorer (liteforge.caldera.xyz) and the Lester Labs testnet dApp at lester-labs.com. Nothing on mainnet is live yet — but when it is, the interfaces and addresses will be identical.