Migrate a Contract from EVM chain

This EVM template is powered by Frontier. It allows you to deploy almost any Solidity contract you have following these steps.

Step 1: Prepare and run the chain

This step is basic, you can use our guide for generic template. It is recommended to use async backing for better experience. The only additional thing that you will need to specify is the EVM Chain Id in your chainspec. For that, you need:

During the "Edit the chainspec" step execute one additional step:
- Edit the evmChainId.chainId to the value of your choice. Try to select a value that has no existing EVM chain assigned to it.

Step 2: Set up the development environment

For Solidity development you can use Foundry. Feel free to use any other toolkit like ethers.js or web3.py.

With the chain running, to start the development you need only two values: a private key from the account with some tokens on it and a url from EVM RPC.

Private Key.

If you have formed your own chainspec, you should have some keys ready. Alternatively, you can generate the key using any wallet of your choice (e.g. Metamask) and get some tokens to it. By default, we have these keys for prefunded accounts in the chainspec:

Private: 0x94834ac72c525a539097542a738816e8d2d18a60d6460c25e82b306441635dc4 Public: 0x33c7c88f2B2Fcb83975fCDB08d2B5bf7eA29FDCE
Private: 0x3c959c97d3b687af91c27b93bbe8deb2bb2148f01bd48126ae757e202ab625a0 Public: 0xc02db867898f227416BCB6d97190126A6b04988A

You must not use these keys for any production purpose

Url for the EVM RPC.

This part is simple. You can use the same url that you would use with the polkadot.js wallet — it serves the EVM JSON-RPC as well. If you have followed our guide, you can use http://localhost:8844.

Step 3: Deploy your contract

Optional: If you want to test any contract, you can use our guide about the standard contracts.

When you are ready with the contract just use forge that you have installed in a previous step:

forge create --rpc-url <rpc_url> --private-key <private_key> <path_to_contract>

Output of this command will contain the contract address. That’s it!