The following instructions are required for stakers utilizing Lodestar.
- Validator management
- Wallet configuration
- Setup your validator
- Run the validator
A wallet helps to manage many validators from a group of 12/24 words (also known as a "mnemonic" or "recovery phrase"). All validators and withdrawal keys can be re-generated from a backed-up mnemonic.
The mnemonic is randomly generated during wallet creation and printed out to the terminal. It's important to make one or more backups of the mnemonic to ensure your ETH wallets are not lost in the case of data loss.
It is very important to keep your mnemonic private as it represents the ultimate control of your ETH wallets.
Create a wallet¶
Lodestar is deprecating its functionality to create wallets.
To create a wallet, we recommend using the official staking-deposit-cli from the Ethereum Foundation for users comfortable with command line interfaces.
Alternatively, for a graphical user interface, you can use the Stakehouse Wagyu Key Generator developed by members of the EthStaker community.
These tools will generate files for staking validators as well as the important mnemonic. This mnemonic must be handled and stored securely.
Setup your validator¶
Validators are represented by a BLS keypair. Use your generated mnemonic from one of the tools above to generate the keystore files required for validator duties on Lodestar.
Import a validator keystore from your wallet to Lodestar¶
To import a validator keystore that was created via one of the methods described above, you must locate the validator keystore JSONs exported by those tools (ex.
Inside the keystore JSON file, you should have an EIP-2335 conformant keystore file.
You will also need the passphrase used the encrypt the keystore. This can be specified interactively, or provided in a plaintext file.
Option 1: Import Keys To Lodestar's Keystores Folder¶
You can load the keys into the keystore folder using the
validator import command. There are two methods for importing keystores:
# Interactive passphrase import ./lodestar validator import --importKeystores ./validator_keys # Plaintext passphrase file import ./lodestar validator import --importKeystores ./validator_keys --importKeystoresPassword ./password.txt
The interactive passphrase import method will prompt every keystore in the
validator_keys folder for import and will ask for the individual password for each keystore. This method will allow you to import multiple keystores with different passwords.
The plaintext passphrase file import method will allow to import all keystores in the
validator_keys folder with the same password contained in
password.txt for efficiency.
Once imported with either method, these keystores will be automatically loaded when you start the validator. To list the imported keystores, use the
validator list command.
Option 2: Import Keys When Starting the Validator¶
To import keys when you start the validator specify the
--importKeystoresPassword flags with the
./lodestar validator --importKeystores ./validator_keys --importKeystoresPassword ./password.txt
If you import keys using
--importKeystores at runtime (Option 2) any keys loaded to the keystores folder from Option 1 will be ignored.
Configuring the fee recipient address¶
Post-Merge Ethereum requires validators to set a Fee Recipient which allows you to receive priority fees when proposing blocks. If you do not set this address, your priority fees will be sent to the burn address.
Configure your validator client's fee recipient address by using the
--suggestedFeeRecipient flag. Ensure you specify an Ethereum address you control. An example of a fee recipient set with the address
0xB7576e9d314Df41EC5506494293Afb1bd5D3f65d would add the following flag to their configuration:
You may choose to use the
--strictFeeRecipientCheck flag to enable a strict check of the fee recipient address with the one returned by the beacon node for added reassurance.
Submit a validator deposit¶
Please use the official tools to perform your deposits
- Ethereum Foundation launchpad: https://launchpad.ethereum.org
Run the validator¶
To start a Lodestar validator run the command:
./lodestar validator --network $NETWORK_NAME
You should see confirmation that modules have started.
Nov-29 10:47:13.647 info: Lodestar network=sepolia, version=v1.2.2/f093b46, commit=f093b468ec3ab0dbbe8e2d2c8175f52ad88aa35f Nov-29 10:47:13.649 info: Connecting to LevelDB database path=/home/user/.local/share/lodestar/sepolia/validator-db Nov-29 10:47:51.732 info: 3 local keystores Nov-29 10:47:51.735 info: 0x800f6be579b31ea950a50be65f7de8f678b23b7466579c01ac26ebf9c19599fb2b446da40ad4fc92c6109fcd6793303f Nov-29 10:47:51.735 info: 0x81337ebe90d6942d8b61922ea880c4d28ebc745ddc10a1acc85b745a15c6c8754af1a73b1b3483b6a5024b783510b35c Nov-29 10:47:51.757 info: 0xb95fc0ec39596deee2c4363f57bb4786f5bb8dfb345c1e5b14e2927be482615971d0d81f9a88b3389fac7079b3cb2f46 Nov-29 10:47:51.776 info: Genesis fetched from the beacon node Nov-29 10:47:51.781 info: Verified connected beacon node and validator have same the config Nov-29 10:47:51.837 info: Verified connected beacon node and validator have the same genesisValidatorRoot Nov-29 10:47:51.914 info: Discovered new validators count=100 Nov-29 10:48:00.197 info: Published SyncCommitteeMessage slot=1165140, count=27 Nov-29 10:48:02.296 info: Published attestations slot=1165140, count=6 Nov-29 10:48:08.122 info: Published aggregateAndProofs slot=1165140, index=0, count=2 Nov-29 10:48:12.102 info: Published SyncCommitteeMessage slot=1165141, count=27 Nov-29 10:48:14.236 info: Published attestations slot=1165141, count=4