Guide | Ethereum Staking on Zhejiang Testnet

Become a validator, start staking and help secure Ethereum, a proof-of-stake blockchain. Anyone with 32 ETH can join.

Your Mission - #TestingTheWithdrawalsShanghai

• Overview: To participate in the public testnet known as Zhejiang, the first public effort to test Ethereum’s upgrade to enabling validator withdrawals with a hardfork called "Shanghai-Capella" or also known as EIP 4855.

• Goals: To test your staking setups, practice voluntary exits and validator withdrawals.

• Staked ETH: With the new ability to withdraw staked ETH since beacon chain genesis on December 1 2020, this upgrade to Ethereum POS will add flexibility and attract the next wave of stakers and innovation.

• Client Diversity: Within the Ethereum network of nodes, you want to improve Ethereum's client diversity by choosing a minority execution and consensus client combination.

• Timeline: Assuming this testnet is thoroughly tested, mainnet Ethereum could be upgraded sometime in March 2023.

As of early February 2023, Besu is the most minority execution client with 6.8% of nodes. Lodestar is by far the most minority consensus client with 0.29% representation.

Client Diversity

How Staking on Ethereum Works

1. Acquire some hardware (laptop, desktop, server) or rent a VPS (cloud server): You need to run a node to stake.

2. Sync an execution layer client

3. Sync a consensus layer client

4. Generate your validator keys and import them into your validator client

5. Monitor and maintain your node

A Ethereum node consists of the Execution Layer + Consensus Layer.

A Ethereum Staking node is the previous plus a Validator client.

Client Stack

Big picture: Execution / Consensus / Validator

Prerequisites

This guide was written for aspiring Ethereum stakers who have basic familiarity with command line tools and it was tested against Ubuntu 22.04.1 LTS client. You’ll want a dedicated cloud VPS or local desktop/server/laptop running a clean install of Ubuntu preferably.

If using a VPS or remote server, install and start the SSH client for your operating system:

Windows: PuTTY

MacOS and Linux: from the Terminal, use the native command:

ssh <YourUserName>@<YourServersIP>

How to Run Commands

• Commands are to be run in a terminal window or ssh terminal.

• Commands preceded by sudo will prompt for your password at first, and periodically afterwards.

Minimum Hardware Requirements

• Operating system: 64-bit Linux (i.e. Ubuntu 22.04 LTS Server or Desktop)

• Processor: Dual core CPU, Intel Core i5–760 or AMD FX-8100 or better

• Memory: 16GB RAM

• Storage: 40GB SSD

Recommended Hardware Requirements

Once done with testnet staking, this hardware configuration would be suitable for a mainnet staking node.

• Operating system: 64-bit Linux (i.e. Ubuntu 22.04 LTS Server or Desktop)

• Processor: Intel i5 or AMD Ryzen 5 or better.

• Memory: 32GB RAM

• Storage: 2TB SSD or NVME

• Network: 100 Mbit or faster connection with at least 2TB per month data plan

For examples of actual staking hardware builds, check out RocketPool’s hardware guide.

Ethereum Staking Node

Pro Staking Tip: Highly recommend you begin with a brand new instance of an OS, VM, and/or machine. Avoid headaches by NOT reusing testnet keys, wallets, or databases for your validator.

How to participate with Zhejiang

Step 1. Install dependencies and updates

Install packages and update OS.

sudo apt-get update && sudo apt-get upgrade -y
sudo apt-get install git ufw curl ccze -y

Reboot your machine to update installation.

sudo reboot

Step 2. Configure Firewall

Initialize the firewall with Ethereum’s p2p ports and ssh.

# By default, deny all incoming and outgoing traffic
sudo ufw default deny incoming
sudo ufw default allow outgoing

# Allow SSH access
sudo ufw allow ssh

# Allow execution client port
sudo ufw allow 30303/tcp

# Allow consensus client port
sudo ufw allow 9000/tcp
sudo ufw allow 9000/udp

# Enable UFW
sudo ufw enable

Confirm the settings are in effect.

sudo ufw status numbered

Example output:

Status: active

     To                         Action      From
     --                         ------      ----
[ 1] 9000/udp                   ALLOW IN    Anywhere
[ 2] 22/tcp                     ALLOW IN    Anywhere
[ 3] 30303/tcp                  ALLOW IN    Anywhere
[ 4] 9000/tcp                   ALLOW IN    Anywhere
[ 5] 9000/udp (v6)              ALLOW IN    Anywhere (v6)
[ 6] 22/tcp (v6)                ALLOW IN    Anywhere (v6)
[ 7] 30303/tcp (v6)             ALLOW IN    Anywhere (v6)
[ 8] 9000/tcp (v6)              ALLOW IN    Anywhere (v6)

For optimal connectivity, ensure Port Forwarding is setup for your router. Learn to port foward with guides found at https://portforward.com/how-to-port-forward

Step 3. Synchronize Time with Chrony

Install Chrony with the following.

sudo apt-get install chrony -y

Wait a few seconds, then verify that Chrony is syncing time.

chronyc tracking

Step 4. Download Zhejiang configuration files

#Setup git directory
mkdir ~/git && cd ~/git

#Clone the testnet config files
git clone https://github.com/ethpandaops/withdrawals-testnet.git

#Make a directory to store config files
sudo mkdir -p /var/lib/ethereum/zhejiang

#Copy config files to default location
sudo cp -R ~/git/withdrawals-testnet/zhejiang-testnet/custom_config_data /var/lib/ethereum/zhejiang

Step 5. Setup Execution Layer Client

Setup your execution layer client, your choice of Nethermind, Erigon, Geth or Besu.

Only one execution layer client is required per node.

Hyperledger Besu is an open-source Ethereum client designed for demanding enterprise applications requiring secure, high-performance transaction processing in a private network. It's developed under the Apache 2.0 license and written in Java.

Nethermind is all about performance and flexibility. Built on .NET core, a widespread, enterprise-friendly platform, Nethermind makes integration with existing infrastructures simple, without losing sight of stability, reliability, data integrity, and security.

Erigon is an implementation of Ethereum innovating on the efficiency frontier, written in Go.

Geth - Go-ethereum (aka Geth) is an Ethereum client built in Go. It is one of the original and most popular Ethereum clients.

Install Nethermind

Install dependencies.

sudo apt-get update
sudo apt-get install curl libsnappy-dev libc6-dev jq libc6 unzip -y

Review the latest release at https://github.com/NethermindEth/nethermind/releases

Run the following to automatically download the latest linux release, un-zip and cleanup.

cd $HOME
curl -s https://api.github.com/repos/NethermindEth/nethermind/releases/latest | jq -r ".assets[] | select(.name) | .browser_download_url" | grep linux-x64 | xargs wget -q --show-progress
unzip -o nethermind*.zip -d $HOME/nethermind
rm nethermind*linux*.zip

Install the binaries.

sudo cp -a $HOME/nethermind /usr/local/bin/nethermind

Download the testnet configs.

cd /usr/local/bin/nethermind/configs
wget https://raw.githubusercontent.com/NethermindEth/nethermind/master/src/Nethermind/Nethermind.Runner/configs/withdrawals_devnet.cfg

Create a service user for the execution service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group execution
sudo mkdir -p /var/lib/nethermind/zhejiang
sudo chown -R execution:execution /var/lib/nethermind/zhejiang

Generate the JWT secret, a file used by both the execution and consensus client, add read access privileges for the consensus client and setup ownership permissions

openssl rand -hex 32 | tr -d "\n" | sudo tee "/var/lib/ethereum/zhejiang/jwtsecret"
sudo chmod +r /var/lib/ethereum/zhejiang/jwtsecret

Create a systemd unit file to define your execution.service configuration.

sudo nano /etc/systemd/system/execution.service

Paste the following configuration into the file.

[Unit]
Description=Nethermind Execution Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=execution
Group=execution
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
WorkingDirectory=/var/lib/nethermind/zhejiang
Environment="DOTNET_BUNDLE_EXTRACT_BASE_DIR=/var/lib/nethermind/zhejiang"
ExecStart=/usr/local/bin/nethermind/Nethermind.Runner \
  --config withdrawals_devnet \
  --datadir="/var/lib/nethermind/zhejiang" \
  --JsonRpc.JwtSecretFile="/var/lib/ethereum/zhejiang/jwtsecret" \
  --Init.ChainSpecPath="/var/lib/ethereum/zhejiang/custom_config_data/chainspec.json" \
  --Discovery.Bootnodes="enode://691c66d0ce351633b2ef8b4e4ef7db9966915ca0937415bd2b408df22923f274873b4d4438929e029a13a680140223dcf701cabe22df7d8870044321022dfefa@64.225.78.1:30303,enode://89347b9461727ee1849256d78e84d5c86cc3b4c6c5347650093982b726d71f3d08027e280b399b7b6604ceeda863283dcfe1a01e93728b4883114e9f8c7cc8ef@146.190.238.212:30303,enode://c2892072efe247f21ed7ebea6637ade38512a0ae7c5cffa1bf0786d5e3be1e7f40ff71252a21b36aa9de54e49edbcfc6962a98032adadfa29c8524262e484ad3@165.232.84.160:30303,enode://71e862580d3177a99e9837bd9e9c13c83bde63d3dba1d5cea18e89eb2a17786bbd47a8e7ae690e4d29763b55c205af13965efcaf6105d58e118a5a8ed2b0f6d0@68.183.13.170:30303,enode://2f6cf7f774e4507e7c1b70815f9c0ccd6515ee1170c991ce3137002c6ba9c671af38920f5b8ab8a215b62b3b50388030548f1d826cb6c2b30c0f59472804a045@161.35.147.98:30303"

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Install Besu

Install dependencies.

sudo apt install -y openjdk-17-jdk libjemalloc-dev

Build the binaries.

cd $HOME/git
git clone -b main https://github.com/hyperledger/besu.git
cd besu
./gradlew installDist

Verify Besu was properly built by checking the version.

./build/install/besu/bin/besu --version

Sample output of a compatible version.

besu/v23.1.0-dev-e18e407c/linux-x86_64/openjdk-java-17

2023-02-02 01:22:12.000+00:00 | main | INFO | Besu | Using jemalloc

Install the binaries.

sudo cp -a $HOME/git/besu/build/install/besu /usr/local/bin/besu

Create a service user for the execution service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group execution
sudo mkdir -p /var/lib/besu/zhejiang
sudo chown -R execution:execution /var/lib/besu/zhejiang

Generate the JWT secret, a file used by both the execution and consensus client, add read access privileges for the consensus client and setup ownership permissions

openssl rand -hex 32 | tr -d "\n" | sudo tee "/var/lib/ethereum/zhejiang/jwtsecret"
sudo chmod +r /var/lib/ethereum/zhejiang/jwtsecret

Create a systemd unit file to define your execution.service configuration.

sudo nano /etc/systemd/system/execution.service

Paste the following configuration into the file.

[Unit]
Description=Besu Execution Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=execution
Group=execution
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
Environment="JAVA_OPTS=-Xmx5g"
ExecStart=/usr/local/bin/besu/bin/besu \
  --network-id=1337803 \
  --rpc-ws-enabled=true \
  --rpc-http-enabled=true \
  --rpc-http-cors-origins="*" \
  --host-allowlist="*" \
  --engine-jwt-secret="/var/lib/ethereum/zhejiang/jwtsecret" \
  --metrics-enabled=true \
  --data-storage-format=BONSAI \
  --sync-mode=X_CHECKPOINT \
  --Xplugin-rocksdb-high-spec-enabled \
  --genesis-file="/var/lib/ethereum/zhejiang/custom_config_data/besu.json" \
  --data-path="/var/lib/besu/zhejiang" \
  --bootnodes="enode://691c66d0ce351633b2ef8b4e4ef7db9966915ca0937415bd2b408df22923f274873b4d4438929e029a13a680140223dcf701cabe22df7d8870044321022dfefa@64.225.78.1:30303,enode://89347b9461727ee1849256d78e84d5c86cc3b4c6c5347650093982b726d71f3d08027e280b399b7b6604ceeda863283dcfe1a01e93728b4883114e9f8c7cc8ef@146.190.238.212:30303,enode://c2892072efe247f21ed7ebea6637ade38512a0ae7c5cffa1bf0786d5e3be1e7f40ff71252a21b36aa9de54e49edbcfc6962a98032adadfa29c8524262e484ad3@165.232.84.160:30303,enode://71e862580d3177a99e9837bd9e9c13c83bde63d3dba1d5cea18e89eb2a17786bbd47a8e7ae690e4d29763b55c205af13965efcaf6105d58e118a5a8ed2b0f6d0@68.183.13.170:30303,enode://2f6cf7f774e4507e7c1b70815f9c0ccd6515ee1170c991ce3137002c6ba9c671af38920f5b8ab8a215b62b3b50388030548f1d826cb6c2b30c0f59472804a045@161.35.147.98:30303"
  
[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Install Erigon

Install Go dependencies

wget -O go.tar.gz https://go.dev/dl/go1.19.6.linux-amd64.tar.gz
sudo rm -rf /usr/local/go && sudo tar -C /usr/local -xzf go.tar.gz
echo export PATH=$PATH:/usr/local/go/bin >> $HOME/.bashrc
source $HOME/.bashrc

Verify Go is properly installed by checking the version and cleanup files.

go version
rm go.tar.gz

Install build dependencies.

sudo apt-get update
sudo apt install build-essential git

Build the binary.

cd $HOME/git
git clone https://github.com/ledgerwatch/erigon.git
cd erigon
make erigon

Install the binary.

sudo cp $HOME/git/erigon/build/bin/erigon /usr/local/bin

Create a service user for the execution service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group execution
sudo mkdir -p /var/lib/erigon/zhejiang
sudo chown -R execution:execution /var/lib/erigon/zhejiang

Generate the JWT secret, a file used by both the execution and consensus client, add read access privileges for the consensus client and setup ownership permissions

openssl rand -hex 32 | tr -d "\n" | sudo tee "/var/lib/ethereum/zhejiang/jwtsecret"
sudo chmod +r /var/lib/ethereum/zhejiang/jwtsecret

Create a systemd unit file to define your execution.service configuration.

sudo nano /etc/systemd/system/execution.service

Paste the following configuration into the file.

[Unit]
Description=Erigon Execution Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=execution
Group=execution
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
ExecStart=/usr/local/bin/erigon \
    --datadir=/var/lib/erigon/zhejiang  \
    --externalcl \
    --networkid=1337803 \
    --authrpc.jwtsecret=/var/lib/ethereum/zhejiang/jwtsecret \
    --http --http.api=engine,net,eth \
    --http.corsdomain "*" \
    --bootnodes="enode://691c66d0ce351633b2ef8b4e4ef7db9966915ca0937415bd2b408df22923f274873b4d4438929e029a13a680140223dcf701cabe22df7d8870044321022dfefa@64.225.78.1:30303,enode://89347b9461727ee1849256d78e84d5c86cc3b4c6c5347650093982b726d71f3d08027e280b399b7b6604ceeda863283dcfe1a01e93728b4883114e9f8c7cc8ef@146.190.238.212:30303,enode://c2892072efe247f21ed7ebea6637ade38512a0ae7c5cffa1bf0786d5e3be1e7f40ff71252a21b36aa9de54e49edbcfc6962a98032adadfa29c8524262e484ad3@165.232.84.160:30303,enode://71e862580d3177a99e9837bd9e9c13c83bde63d3dba1d5cea18e89eb2a17786bbd47a8e7ae690e4d29763b55c205af13965efcaf6105d58e118a5a8ed2b0f6d0@68.183.13.170:30303,enode://2f6cf7f774e4507e7c1b70815f9c0ccd6515ee1170c991ce3137002c6ba9c671af38920f5b8ab8a215b62b3b50388030548f1d826cb6c2b30c0f59472804a045@161.35.147.98:30303" 
[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Initialize database

sudo -u execution /usr/local/bin/erigon init \
    --datadir=/var/lib/erigon/zhejiang /var/lib/ethereum/zhejiang/custom_config_data/genesis.json

Install Geth

Install Go dependencies

wget -O go.tar.gz https://go.dev/dl/go1.19.6.linux-amd64.tar.gz
sudo rm -rf /usr/local/go && sudo tar -C /usr/local -xzf go.tar.gz
echo export PATH=$PATH:/usr/local/go/bin >> $HOME/.bashrc
source $HOME/.bashrc

Verify Go is properly installed by checking the version and cleanup files.

go version
rm go.tar.gz

Install build dependencies.

sudo apt-get update
sudo apt install build-essential git

Build the binary.

cd $HOME/git
git clone -b master https://github.com/ethereum/go-ethereum.git
cd go-ethereum 
make geth

Install the binary.

sudo cp $HOME/git/go-ethereum/build/bin/geth /usr/local/bin

Create a service user for the execution service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group execution
sudo mkdir -p /var/lib/geth/zhejiang
sudo chown -R execution:execution /var/lib/geth/zhejiang

Generate the JWT secret, a file used by both the execution and consensus client, add read access privileges for the consensus client and setup ownership permissions

openssl rand -hex 32 | tr -d "\n" | sudo tee "/var/lib/ethereum/zhejiang/jwtsecret"
sudo chmod +r /var/lib/ethereum/zhejiang/jwtsecret

Create a systemd unit file to define your execution.service configuration.

sudo nano /etc/systemd/system/execution.service

Paste the following configuration into the file.

[Unit]
Description=Geth Execution Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=execution
Group=execution
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
ExecStart=/usr/local/bin/geth \
    --networkid=1337803 \
    --datadir=/var/lib/geth/zhejiang \
    --authrpc.jwtsecret=/var/lib/ethereum/zhejiang/jwtsecret \
    --http --http.api=engine,net,eth \
    --http.corsdomain "*" \
    --bootnodes="enode://691c66d0ce351633b2ef8b4e4ef7db9966915ca0937415bd2b408df22923f274873b4d4438929e029a13a680140223dcf701cabe22df7d8870044321022dfefa@64.225.78.1:30303,enode://89347b9461727ee1849256d78e84d5c86cc3b4c6c5347650093982b726d71f3d08027e280b399b7b6604ceeda863283dcfe1a01e93728b4883114e9f8c7cc8ef@146.190.238.212:30303,enode://c2892072efe247f21ed7ebea6637ade38512a0ae7c5cffa1bf0786d5e3be1e7f40ff71252a21b36aa9de54e49edbcfc6962a98032adadfa29c8524262e484ad3@165.232.84.160:30303,enode://71e862580d3177a99e9837bd9e9c13c83bde63d3dba1d5cea18e89eb2a17786bbd47a8e7ae690e4d29763b55c205af13965efcaf6105d58e118a5a8ed2b0f6d0@68.183.13.170:30303,enode://2f6cf7f774e4507e7c1b70815f9c0ccd6515ee1170c991ce3137002c6ba9c671af38920f5b8ab8a215b62b3b50388030548f1d826cb6c2b30c0f59472804a045@161.35.147.98:30303" 

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Initialize database

sudo -u execution /usr/local/bin/geth init \
    --datadir=/var/lib/geth/zhejiang /var/lib/ethereum/zhejiang/custom_config_data/genesis.json

Run the following to enable auto-start at boot time.

sudo systemctl daemon-reload
sudo systemctl enable execution

Finally, start your execution layer client and check it's status.

sudo systemctl start execution
sudo systemctl status execution

Press Ctrl + C to exit the status.

Step 6. Setup Consensus Layer Client

To strengthen Ethereum's resilience against potential attacks or consensus bugs, it's best practice to run a minority client in order to increase client diversity. Find the latest distribution of consensus clients here: https://clientdiversity.org

Set up your consensus layer client. Your choice of Lighthouse, Nimbus, Teku, Prysm or Lodestar.

​Lodestar is a Typescript implementation by the Chainsafe.io team. In addition to the beacon chain client, the team is also working on 22 packages and libraries. Finally, the Lodestar team is leading the Ethereum space in light client research and development and has received funding from the EF and Moloch DAO for this purpose.

Lighthouse is an Ethereum client with a heavy focus on speed and security. The team behind it, Sigma Prime is an information security and software engineering firm who have funded Lighthouse along with the Ethereum Foundation, Consensys, and private individuals. Lighthouse is built in Rust and offered under an Apache 2.0 License.

Teku is a Java-based Ethereum 2.0 client designed & built to meet institutional needs and security requirements. Dedicated to building enterprise-ready clients and tools for interacting with the core Ethereum platform, Teku is Apache 2 licensed and written in Java, a language notable for its maturity & ubiquity.

Nimbus is a research project and a client implementation for Ethereum 2.0 designed to perform well on embedded systems and personal mobile devices, including older smartphones with resource-restricted hardware. The Nimbus team are from Status the company best known for their messaging app/wallet/Web3 browser by the same name. Nimbus (Apache 2) is written in Nim, a language with Python-like syntax that compiles to C.

Prysm is a Go implementation of Ethereum 2.0 protocol with a focus on usability, security, and reliability. Prysm is developed by Prysmatic Labs, a company with the sole focus on the development of their client. Prysm is written in Go and released under a GPL-3.0 license.

Install Lighthouse Consensus Client

Install rust dependency

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

When prompted, enter '1' to proceed with the default install.

Update your environment variables.

echo export PATH="$HOME/.cargo/bin:$PATH" >> ~/.bashrc
source ~/.bashrc

Install rust dependencies.

sudo apt-get update
sudo apt install -y git gcc g++ make cmake pkg-config libssl-dev libclang-dev clang protobuf-compiler

Build the binaries.

mkdir ~/git
cd ~/git
git clone -b capella https://github.com/sigp/lighthouse.git
cd lighthouse
make

Verify lighthouse was built properly by checking the version number.

lighthouse --version

Install the binary.

sudo cp $HOME/.cargo/bin/lighthouse /usr/local/bin/lighthouse

Create a service user for the consensus service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group consensus
sudo mkdir -p /var/lib/lighthouse/zhejiang

Setup ownership permissions.

sudo chown -R consensus:consensus /var/lib/lighthouse

Create a systemd unit file to define your consensus.service configuration.

sudo nano /etc/systemd/system/consensus.service

Paste the following configuration into the file. Replace <enter-eth-address-here> with your suggested fee recipient ETH address.

[Unit]
Description=Lighthouse Consensus Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=consensus
Group=consensus
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
ExecStart=/usr/local/bin/lighthouse bn \
  --datadir /var/lib/lighthouse/zhejiang \
  --testnet-dir /var/lib/ethereum/zhejiang/custom_config_data \
  --http \
  --validator-monitor-auto \
  --metrics \
  --port 9000 \
  --checkpoint-sync-url=https://beacon.zhejiang.ethpandaops.io \
  --execution-endpoint http://127.0.0.1:8551 \
  --execution-jwt /var/lib/ethereum/zhejiang/jwtsecret \
  --boot-nodes="enr:-Iq4QMCTfIMXnow27baRUb35Q8iiFHSIDBJh6hQM5Axohhf4b6Kr_cOCu0htQ5WvVqKvFgY28893DHAg8gnBAXsAVqmGAX53x8JggmlkgnY0gmlwhLKAlv6Jc2VjcDI1NmsxoQK6S-Cii_KmfFdUJL2TANL3ksaKUnNXvTCv1tLwXs0QgIN1ZHCCIyk,enr:-Ly4QOS00hvPDddEcCpwA1cMykWNdJUK50AjbRgbLZ9FLPyBa78i0NwsQZLSV67elpJU71L1Pt9yqVmE1C6XeSI-LV8Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhEDhTgGJc2VjcDI1NmsxoQIgMUMFvJGlr8dI1TEQy-K78u2TJE2rWvah9nGqLQCEGohzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA,enr:-MK4QMlRAwM7E8YBo6fqP7M2IWrjFHP35uC4pWIttUioZWOiaTl5zgZF2OwSxswTQwpiVCnj4n56bhy4NJVHSe682VWGAYYDHkp4h2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhJK-7tSJc2VjcDI1NmsxoQLDq7LlsXIXAoJXPt7rqf6CES1Q40xPw2yW0RQ-Ly5S1YhzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA"

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Install Teku Consensus Client

Install Java 17 LTS.

sudo apt update
sudo apt install openjdk-17-jdk -y

Verify Java 17+ is installed.

java --version

Build the binaries.

mkdir ~/git
cd ~/git
git clone -b master https://github.com/ConsenSys/teku.git
cd teku
./gradlew distTar installDist

Verify Teku was built properly by displaying the version.

cd $HOME/git/teku/build/install/teku/bin
./teku --version

Install the binaries.

sudo cp -a $HOME/git/teku/build/install/teku /usr/local/bin/teku

Create a service user for the consensus service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group consensus
sudo mkdir -p /var/lib/teku/zhejiang

Setup ownership permissions.

sudo chown -R consensus:consensus /var/lib/teku

Create a systemd unit file to define your consensus.service configuration.

sudo nano /etc/systemd/system/consensus.service

Paste the following configuration into the file. Replace <enter-eth-address-here> with your suggested fee recipient ETH address.

[Unit]
Description=Teku Consensus Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=consensus
Group=consensus
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
Environment=JAVA_OPTS=-Xmx5g
ExecStart=/usr/local/bin/teku-dev/bin/teku \
  --network /var/lib/ethereum/zhejiang/custom_config_data/config.yaml \
  --data-path /var/lib/teku/zhejiang \
  --data-storage-mode="prune" \
  --initial-state="https://beacon.zhejiang.ethpandaops.io/eth/v2/debug/beacon/states/finalized" \
  --ee-endpoint http://127.0.0.1:8551 \
  --ee-jwt-secret-file /var/lib/ethereum/zhejiang/jwtsecret \
  --validator-keys /var/lib/teku/validator_keys/zhejiang:/var/lib/teku/validator_keys/zhejiang \
  --rest-api-enabled true \
  --metrics-enabled true \
  --metrics-port 8008 \
  --p2p-discovery-bootnodes="enr:-Iq4QMCTfIMXnow27baRUb35Q8iiFHSIDBJh6hQM5Axohhf4b6Kr_cOCu0htQ5WvVqKvFgY28893DHAg8gnBAXsAVqmGAX53x8JggmlkgnY0gmlwhLKAlv6Jc2VjcDI1NmsxoQK6S-Cii_KmfFdUJL2TANL3ksaKUnNXvTCv1tLwXs0QgIN1ZHCCIyk,enr:-Ly4QOS00hvPDddEcCpwA1cMykWNdJUK50AjbRgbLZ9FLPyBa78i0NwsQZLSV67elpJU71L1Pt9yqVmE1C6XeSI-LV8Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhEDhTgGJc2VjcDI1NmsxoQIgMUMFvJGlr8dI1TEQy-K78u2TJE2rWvah9nGqLQCEGohzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA,enr:-MK4QMlRAwM7E8YBo6fqP7M2IWrjFHP35uC4pWIttUioZWOiaTl5zgZF2OwSxswTQwpiVCnj4n56bhy4NJVHSe682VWGAYYDHkp4h2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhJK-7tSJc2VjcDI1NmsxoQLDq7LlsXIXAoJXPt7rqf6CES1Q40xPw2yW0RQ-Ly5S1YhzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA,enr:-MS4QCgiQisRxtzXKlBqq_LN1CRUSGIpDKO4e2hLQsffp0BrC3A7-8F6kxHYtATnzcrsVOr8gnwmBnHYTFvE9UmT-0EHh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhKXoVKCJc2VjcDI1NmsxoQK6J-uvOXMf44iIlilx1uPWGRrrTntjLEFR2u-lHcHofIhzeW5jbmV0c4gAAAAAAAAAAIN0Y3CCIyiDdWRwgiMo,enr:-LK4QOQd-elgl_-dcSoUyHDbxBFNgQ687lzcKJiSBtpCyPQ0DinWSd2PKdJ4FHMkVLWD-oOquXPKSMtyoKpI0-Wo_38Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhES3DaqJc2VjcDI1NmsxoQNIf37JZx-Lc8pnfDwURcHUqLbIEZ1RoxjZuBRtEODseYN0Y3CCIyiDdWRwgiMo,enr:-KG4QLNORYXUK76RPDI4rIVAqX__zSkc5AqMcwAketVzN9YNE8FHSu1im3qJTIeuwqI5JN5SPVsiX7L9nWXgWLRUf6sDhGV0aDKQ7ijXswAAAHJGBQAAAAAAAIJpZIJ2NIJpcIShI5NiiXNlY3AyNTZrMaECpA_KefrVAueFWiLLDZKQPPVOxMuxGogPrI474FaS-x2DdGNwgiMog3VkcIIjKA" \
  --p2p-static-peers="/ip4/64.225.78.1/tcp/9000/p2p/16Uiu2HAkwbLbPXhPua835ErpoywHmgog4oydobcj3uKtww8UmW3b,/ip4/146.190.238.212/tcp/9000/p2p/16Uiu2HAm8bVLELrPczXQesjUYF8EetaKokgrdgZKj8814ZiGNggk,/ip4/165.232.84.160/tcp/9000/p2p/16Uiu2HAm7xM7nYVz3U9iWGH6NwExZTWtJGGeZ7ejQrcuUFUwtQmH,/ip4/68.183.13.170/udp/9000/p2p/16Uiu2HAmHXzTmWAtVexas5YskEpbcyDQ5Qck3jdLgErWumjKExUx" \
  --validators-graffiti "" \
  --validators-proposer-default-fee-recipient <enter-eth-address-here>

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Install Nimbus Consensus Client

Install dependencies.

sudo apt-get update
sudo apt-get install curl build-essential git -y

Build the binary.

mkdir ~/git
cd ~/git
git clone -b unstable https://github.com/status-im/nimbus-eth2
cd nimbus-eth2
make update
make -j$(nproc) nimbus_beacon_node

Verify Nimbus was built properly by displaying the version.

cd $HOME/git/nimbus-eth2/build
./nimbus_beacon_node --version

Install the binary.

sudo cp $HOME/git/nimbus-eth2/build/nimbus_beacon_node /usr/local/bin

Create a service user for the consensus service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group consensus
sudo mkdir -p /var/lib/nimbus/zhejiang

Setup ownership permissions.

sudo chown -R consensus:consensus /var/lib/nimbus

Create a systemd unit file to define your consensus.service configuration.

sudo nano /etc/systemd/system/consensus.service

Paste the following configuration into the file. Replace <enter-eth-address-here> with your suggested fee recipient ETH address.

[Unit]
Description=Nimbus Consensus Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=consensus
Group=consensus
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
ExecStart=/usr/local/bin/nimbus_beacon_node \
  --data-dir="/var/lib/nimbus/zhejiang" \
  --network="/var/lib/ethereum/zhejiang/custom_config_data" \
  --web3-url=ws://127.0.0.1:8551 \
  --rest \
  --metrics \
  --metrics-port=8008 \
  --jwt-secret="/var/lib/ethereum/zhejiang/jwtsecret" \
  --bootstrap-node=enr:-Iq4QMCTfIMXnow27baRUb35Q8iiFHSIDBJh6hQM5Axohhf4b6Kr_cOCu0htQ5WvVqKvFgY28893DHAg8gnBAXsAVqmGAX53x8JggmlkgnY0gmlwhLKAlv6Jc2VjcDI1NmsxoQK6S-Cii_KmfFdUJL2TANL3ksaKUnNXvTCv1tLwXs0QgIN1ZHCCIyk \
  --bootstrap-node=enr:-Ly4QOS00hvPDddEcCpwA1cMykWNdJUK50AjbRgbLZ9FLPyBa78i0NwsQZLSV67elpJU71L1Pt9yqVmE1C6XeSI-LV8Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhEDhTgGJc2VjcDI1NmsxoQIgMUMFvJGlr8dI1TEQy-K78u2TJE2rWvah9nGqLQCEGohzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA \
  --bootstrap-node=enr:-MK4QMlRAwM7E8YBo6fqP7M2IWrjFHP35uC4pWIttUioZWOiaTl5zgZF2OwSxswTQwpiVCnj4n56bhy4NJVHSe682VWGAYYDHkp4h2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhJK-7tSJc2VjcDI1NmsxoQLDq7LlsXIXAoJXPt7rqf6CES1Q40xPw2yW0RQ-Ly5S1YhzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA \
  --bootstrap-node=enr:-MS4QCgiQisRxtzXKlBqq_LN1CRUSGIpDKO4e2hLQsffp0BrC3A7-8F6kxHYtATnzcrsVOr8gnwmBnHYTFvE9UmT-0EHh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhKXoVKCJc2VjcDI1NmsxoQK6J-uvOXMf44iIlilx1uPWGRrrTntjLEFR2u-lHcHofIhzeW5jbmV0c4gAAAAAAAAAAIN0Y3CCIyiDdWRwgiMo \
  --bootstrap-node=enr:-LK4QOQd-elgl_-dcSoUyHDbxBFNgQ687lzcKJiSBtpCyPQ0DinWSd2PKdJ4FHMkVLWD-oOquXPKSMtyoKpI0-Wo_38Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhES3DaqJc2VjcDI1NmsxoQNIf37JZx-Lc8pnfDwURcHUqLbIEZ1RoxjZuBRtEODseYN0Y3CCIyiDdWRwgiMo \
  --bootstrap-node=enr:-KG4QLNORYXUK76RPDI4rIVAqX__zSkc5AqMcwAketVzN9YNE8FHSu1im3qJTIeuwqI5JN5SPVsiX7L9nWXgWLRUf6sDhGV0aDKQ7ijXswAAAHJGBQAAAAAAAIJpZIJ2NIJpcIShI5NiiXNlY3AyNTZrMaECpA_KefrVAueFWiLLDZKQPPVOxMuxGogPrI474FaS-x2DdGNwgiMog3VkcIIjKA \
  --suggested-fee-recipient=<enter-eth-address-here>

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Run the following to quickly sync with Checkpoint Sync.

sudo -u consensus /usr/local/bin/nimbus_beacon_node trustedNodeSync \
  --data-dir="/var/lib/nimbus/zhejiang" \
  --network="/var/lib/ethereum/zhejiang/custom_config_data" \
  --trusted-node-url=https://beacon.zhejiang.ethpandaops.io \
  --backfill=false

Install Lodestar Consensus Client

Install dependencies.

sudo apt-get install gcc g++ make git curl -y

Install yarn.

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt update
sudo apt install yarn -y

Install nodejs.

curl -fsSL https://deb.nodesource.com/setup_18.x | sudo -E bash -
sudo apt-get install -y nodejs

Build the binaries.

cd $HOME/git
git clone -b unstable https://github.com/chainsafe/lodestar.git
cd lodestar
yarn install --ignore-optional
yarn run build

Verify Lodestar was built properly by displaying the version.

./lodestar --version

Sample output of a compatible version.

🌟 Lodestar: TypeScript Implementation of the Ethereum Consensus Beacon Chain.

• Version: v1.4.1/bff1438

• by ChainSafe Systems, 2018-2022

Install the binaries.

sudo cp -a $HOME/git/lodestar /usr/local/bin/lodestar

Create a service user for the consensus service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group consensus
sudo mkdir -p /var/lib/lodestar/zhejiang

Setup ownership permissions.

sudo chown -R consensus:consensus /var/lib/lodestar

Create a systemd unit file to define your consensus.service configuration.

sudo nano /etc/systemd/system/consensus.service

Paste the following configuration into the file. Replace <enter-eth-address-here> with your suggested fee recipient ETH address.

[Unit]
Description=Lodestar Consensus Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=consensus
Group=consensus
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
WorkingDirectory=/usr/local/bin/lodestar
ExecStart=/usr/local/bin/lodestar/lodestar beacon \
  --dataDir="/var/lib/lodestar/zhejiang" \
  --paramsFile="/var/lib/ethereum/zhejiang/custom_config_data/config.yaml" \
  --genesisStateFile="/var/lib/ethereum/zhejiang/custom_config_data/genesis.ssz" \
  --execution.urls="http://127.0.0.1:8551" \
  --checkpointSyncUrl=https://beacon.zhejiang.ethpandaops.io \
  --jwt-secret="/var/lib/ethereum/zhejiang/jwtsecret" \
  --bootnodes="enr:-Iq4QMCTfIMXnow27baRUb35Q8iiFHSIDBJh6hQM5Axohhf4b6Kr_cOCu0htQ5WvVqKvFgY28893DHAg8gnBAXsAVqmGAX53x8JggmlkgnY0gmlwhLKAlv6Jc2VjcDI1NmsxoQK6S-Cii_KmfFdUJL2TANL3ksaKUnNXvTCv1tLwXs0QgIN1ZHCCIyk,enr:-Ly4QOS00hvPDddEcCpwA1cMykWNdJUK50AjbRgbLZ9FLPyBa78i0NwsQZLSV67elpJU71L1Pt9yqVmE1C6XeSI-LV8Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhEDhTgGJc2VjcDI1NmsxoQIgMUMFvJGlr8dI1TEQy-K78u2TJE2rWvah9nGqLQCEGohzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA,enr:-MK4QMlRAwM7E8YBo6fqP7M2IWrjFHP35uC4pWIttUioZWOiaTl5zgZF2OwSxswTQwpiVCnj4n56bhy4NJVHSe682VWGAYYDHkp4h2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhJK-7tSJc2VjcDI1NmsxoQLDq7LlsXIXAoJXPt7rqf6CES1Q40xPw2yW0RQ-Ly5S1YhzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA" \
  --metrics=true \
  --suggestedFeeRecipient=<enter-eth-address-here>

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Install Prysm Consensus Client

Install Bazel

wget -O bazel https://github.com/bazelbuild/bazelisk/releases/download/v1.16.0/bazelisk-linux-amd64
sudo mv bazel /usr/local/bin

Build the binaries.

cd $HOME/git
git clone -b develop https://github.com/prysmaticlabs/prysm.git
cd prysm
bazel build //cmd/beacon-chain:beacon-chain --config=release
bazel build //cmd/validator:validator --config=release

Verify Prysm was built properly by displaying the help menu.

bazel run //beacon-chain -- --help

Install the binaries.

sudo cp -a $HOME/git/prysm /usr/local/bin/prysm

Create a service user for the consensus service, as this improves security, then create data directories.

sudo adduser --system --group consensus
sudo mkdir -p /var/lib/prysm/zhejiang

Setup ownership permissions.

sudo chown -R consensus:consensus /var/lib/prysm

Update firewall rules for Prysm, then verify.

sudo ufw delete allow 9000/tcp
sudo ufw allow 13000/tcp
sudo ufw allow 12000/udp

#Verify
sudo ufw status numbered

Example of firewall status.

Status: active

     To                         Action      From
     --                         ------      ----
[ 1] 22/tcp                     ALLOW IN    Anywhere
[ 2] 30303                      ALLOW IN    Anywhere
[ 3] 13000/tcp                  ALLOW IN    Anywhere
[ 4] 12000/udp                  ALLOW IN    Anywhere
[ 5] 22/tcp (v6)                ALLOW IN    Anywhere (v6)
[ 6] 30303 (v6)                 ALLOW IN    Anywhere (v6)
[ 7] 13000/tcp (v6)             ALLOW IN    Anywhere (v6)
[ 8] 12000/udp (v6)             ALLOW IN    Anywhere (v6)

Create a systemd unit file to define your consensus.service configuration.

sudo nano /etc/systemd/system/consensus.service

Paste the following configuration into the file. Replace <enter-eth-address-here> with your suggested fee recipient ETH address.

[Unit]
Description=Prysm Consensus Layer Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=consensus
Group=consensus
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
WorkingDirectory=/usr/local/bin/prysm
ExecStart=bazel run //cmd/beacon-chain --config=release -- \
  --accept-terms-of-use=true \
  --genesis-state=/var/lib/ethereum/zhejiang/custom_config_data/genesis.ssz \
  --genesis-beacon-api-url=https://beacon.zhejiang.ethpandaops.io \
  --checkpoint-sync-url=https://beacon.zhejiang.ethpandaops.io \
  --datadir=/var/lib/prysm/zhejiang \
  --chain-config-file=/var/lib/ethereum/zhejiang/custom_config_data/config.yaml \
  --execution-endpoint=http://localhost:8551 \
  --jwt-secret=/var/lib/ethereum/zhejiang/jwtsecret \
  --contract-deployment-block=0 \
  --bootstrap-node=enr:-Iq4QMCTfIMXnow27baRUb35Q8iiFHSIDBJh6hQM5Axohhf4b6Kr_cOCu0htQ5WvVqKvFgY28893DHAg8gnBAXsAVqmGAX53x8JggmlkgnY0gmlwhLKAlv6Jc2VjcDI1NmsxoQK6S-Cii_KmfFdUJL2TANL3ksaKUnNXvTCv1tLwXs0QgIN1ZHCCIyk \
  --bootstrap-node=enr:-Ly4QOS00hvPDddEcCpwA1cMykWNdJUK50AjbRgbLZ9FLPyBa78i0NwsQZLSV67elpJU71L1Pt9yqVmE1C6XeSI-LV8Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhEDhTgGJc2VjcDI1NmsxoQIgMUMFvJGlr8dI1TEQy-K78u2TJE2rWvah9nGqLQCEGohzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA \
  --bootstrap-node=enr:-MK4QMlRAwM7E8YBo6fqP7M2IWrjFHP35uC4pWIttUioZWOiaTl5zgZF2OwSxswTQwpiVCnj4n56bhy4NJVHSe682VWGAYYDHkp4h2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhJK-7tSJc2VjcDI1NmsxoQLDq7LlsXIXAoJXPt7rqf6CES1Q40xPw2yW0RQ-Ly5S1YhzeW5jbmV0cwCDdGNwgiMog3VkcIIjKA \
  --bootstrap-node=enr:-MS4QCgiQisRxtzXKlBqq_LN1CRUSGIpDKO4e2hLQsffp0BrC3A7-8F6kxHYtATnzcrsVOr8gnwmBnHYTFvE9UmT-0EHh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhKXoVKCJc2VjcDI1NmsxoQK6J-uvOXMf44iIlilx1uPWGRrrTntjLEFR2u-lHcHofIhzeW5jbmV0c4gAAAAAAAAAAIN0Y3CCIyiDdWRwgiMo \
  --bootstrap-node=enr:-LK4QOQd-elgl_-dcSoUyHDbxBFNgQ687lzcKJiSBtpCyPQ0DinWSd2PKdJ4FHMkVLWD-oOquXPKSMtyoKpI0-Wo_38Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpDuKNezAAAAckYFAAAAAAAAgmlkgnY0gmlwhES3DaqJc2VjcDI1NmsxoQNIf37JZx-Lc8pnfDwURcHUqLbIEZ1RoxjZuBRtEODseYN0Y3CCIyiDdWRwgiMo \
  --bootstrap-node=enr:-KG4QLNORYXUK76RPDI4rIVAqX__zSkc5AqMcwAketVzN9YNE8FHSu1im3qJTIeuwqI5JN5SPVsiX7L9nWXgWLRUf6sDhGV0aDKQ7ijXswAAAHJGBQAAAAAAAIJpZIJ2NIJpcIShI5NiiXNlY3AyNTZrMaECpA_KefrVAueFWiLLDZKQPPVOxMuxGogPrI474FaS-x2DdGNwgiMog3VkcIIjKA \
  --suggested-fee-recipient=<enter-eth-address-here>

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Run the following to enable auto-start at boot time.

sudo systemctl daemon-reload
sudo systemctl enable consensus

Finally, start your consensus layer client and check it's status.

sudo systemctl start consensus
sudo systemctl status consensus

Press Ctrl + C to exit the status.

Check your logs to confirm that the execution and consensus clients are up and syncing.

journalctl -fu execution | ccze

journalctl -fu consensus | ccze

Example of Synced Execution Client Logs

Nethermind

A properly functioning Nethermind execution client will indicate "block nnn ... was processed". For example,

Nethermind.Runner[2]: 2023-02-03 00:01:36.2643|FCU - block 16001 (fd781...c2e19f) was processed.
Nethermind.Runner[2]: 2023-02-03 00:01:36.2643|Block 0xd78eaabc854f4e4a844c5c0f9ccf45bed0b2f13d77ea978af62d0eef2210c2e19f was set as head.

Erigon

A properly functioning Erigon execution client will indicate "Handling new payload". For example,

erigon[41]: [INFO] [02-04|01:36:50.362] [2/15 Headers] Waiting for Consensus Layer...
erigon[41]: [INFO] [02-04|01:37:00.273] [2/15 Headers] Handling new payload      height=14001 hash=0x1b2476a50d976536c2846a907ceb4f88cff4d0129ad...

Geth

A properly functioning Geth execution client will indicate "Imported new potential chain segment". For example,

geth[4531]: INFO [02-04|01:20:48.280] Chain head was updated    number=16000 hash=2317ae..c41107
geth[4531]: INFO [02-04|01:20:49.648] Imported new potential chain segment       number=16000 hash=ab173f..33a21b

Besu

A properly functioning Besu execution client will indicate "Fork-Choice-Updates". For example,

2022-03-19 04:09:36.315+00:00 | vert.x-worker-thread-0 | INFO  | EngineForkchoiceUpdated | Consensus fork-choice-update: head: 0xcd2a_8b32..., finalized: 0xfa22_1142...
2022-03-19 04:09:48.328+00:00 | vert.x-worker-thread-0 | INFO  | EngineForkchoiceUpdated | Consensus fork-choice-update: head: 0xff1a_f12a..., finalized: 0xfa22_1142...

Known error in Lodestar/Besu consensus logs: As noted in Lodestar's discord, there will be a noisy error about updating eth1 chain cache. This does not seem to affect node syncing or validator duties.

Example error output:

error: Error updating eth1 chain cache JSON RPC error: Number of requests exceeds max batch size, batch Error: JSON RPC error: Number of requests exceeds max batch size, batch at JsonRpcHttpClient.fetchBatch (file:///usr/local/bin/lodestar/packages/beacon-node/src/eth1/provider/jsonRpcHttpClient.ts:151:15) at processTicksAndRejections (node:internal/process/task_queues:95:5) at Eth1Provider.getBlocksByNumber...

Example of Synced Consensus Client Logs

Lodestar Consensus

A properly functioning Lodestar consensus client will indicate "info: Synced". For example,

Mar-19 04:09:49.000    info: Synced - slot: 3338 - head: 3355 0x5abb_ac30 - execution: valid(0x1a3c_2ca5) - finalized: 0xfa22_1142:3421 - peers: 25
Mar-19 04:09:52.000    info: Synced - slot: 3339 - head: 3356 0xcd2a_8b32 - execution: valid(0xab34_fa32) - finalized: 0xfa22_1142:3421 - peers: 25
Mar-19 04:09:04.000    info: Synced - slot: 3340 - head: 3357 0xff1a_f12a - execution: valid(0xfaf1_b35f) - finalized: 0xfa22_1142:3421 - peers: 25

Lighthouse Consensus

Feb 03 01:02:36.000 INFO New block received                      root: 0xb5ccb2f85d981ca9e1c0d904f967403ddf8c47532c195fe213c94a28ffaf6a2e, slot: 2138
Feb 03 01:02:42.000 INFO Synced                                  slot: 2138, block: 0x1cb281a, epoch: 121, finalized_epoch: 120, finalized_root: 0x1dce0, exec_hash: 0x6827aeb (verified), peers: 50, service: slot_notifier

Teku Consensus

teku[64122]: 02:24:28.010 INFO  - Slot Event  *** Slot: 19200, Block: 1468A43F874EDE790DB6B499A51003500B5BA85226E9500A7A187DB9A169DE20, Justified: 1132, Finalized: 1133, Peers: 70
teku[64122]: 02:24:40.010 INFO  - Slot Event  *** Slot: 19200, Block: 72B092AADFE146F5D3F395A720C0AA3B2354B2095E3F10DC18F0E9716D286DCB, Justified: 1132, Finalized: 1133, Peers: 70

Nimbus Consensus

nimbus_beacon_node[292966]: INF 2023-02-05 01:20:00.000+00:00 Slot start       topics="beacnde" slot=31205 epoch=903 sync=synced peers=80 head=13a131:31204 finalized=1111:cdba33411 delay=69us850ns
nimbus_beacon_node[292966]: INF 2023-02-05 01:20:08.000+00:00 Slot end         topics="beacnde" slot=31205 nextActionWait=7m27s985ms126us530ns nextAttestationSlot=31235 nextProposalSlot=-1 syncCommitteeDuties=none head=13a131:31204

Press Ctrl + C to exit the logs.

Since the network is relatively new, syncing both the execution and consensus layers should take less than an hour.

Syncing is complete when your latest block and slot number matches the public block explorers.

Consensus client: check latest slot number with https://zhejiang.beaconcha.in

Execution client: check latest block number with https://blockscout.com/eth/zhejiang-testnet

Step 7. Configure MetaMask and Use the Testnet Faucet

Configure your MetaMask to point to the Zhejiang testnet or use your own node.

Use remote RPC from ethpandaops.io

1) Visit https://zhejiang.ethpandaops.io website

2) Click the "Add Network to MetaMask" button

Use my node

1) Setup SSH tunnel

Note: If your node and where metamask resides is on the same local laptop/desktop/server, skip step 1.

If your node is remote or on another machine, open a SSH tunnel to your node.

For Mac/Linux,

Typically you an open a ssh tunnel with the following:

ssh -N -v <user>@<staking.node.ip.address> -L 8545:localhost:8545

For Windows using Putty, configure the SSH Tunnel as follows:

1) Navigate toConnection > SSH > Tunnels

2) Set Source port: 8545

3) Set Destination: localhost:8545

4) Click Add button, then Open Button

2) Add a network to Metamask:

Go to Metamask > Settings> Networks > Add a network > Localhost 8545

Configure your Metamask as follows:

• Network name: Zhejiang Localhost 8545

• New RPC URL: http://localhost:8545

• Chain ID: 1337803

• Currency symbol: ETH

• Block explorer URL: https://blockscout.com/eth/zhejiang-testnet

Use the Testnet faucet to acquire at least 32 Zhejiang testnet ETH for 1 validator. It may take a few moments, sometimes up to an hour, for the funds to appear in your wallet. Or request funds from the ethStaker Discord in the #request-zhejiang-eth channel. Alternatively, use the POW faucet by pk910

For security and privacy reasons, it is best practice to use a brand new unused ETH address for these testnet activities. Avoid re-using any of your existing mainnet ETH addresses.

Step 8. Generate Validator Keys

With two easy methods, your can setup your mnemonic keys with either:

• Wagyu - a friendly graphical UI key gen app

• staking-deposit-cli - the original command line based key generator

Staking Deposit CLI Instructions

For the command line method,

cd $HOME
wget https://github.com/ethereum/staking-deposit-cli/releases/download/v2.4.0/staking_deposit-cli-ef89710-linux-amd64.tar.gz

Verify the SHA256 Checksum matches the checksum on the releases page.

echo "c2b12a9e515f904ca359ec39dfbd7022dfefe881c1796ce42319df0a2da05560 *staking_deposit-cli-ef89710-linux-amd64.tar.gz" | shasum -a 256 --check

Example valid output:

staking_deposit-cli-ef89710-linux-amd64.tar.gz: OK

Only proceed if the sha256 check passes with OK!

Extract the archive.

tar xvf staking_deposit-cli-ef89710-linux-amd64.tar.gz
mv staking_deposit-cli-ef89710-linux-amd64 staking-deposit-cli
cd staking-deposit-cli

Make a new mnemonic and replace <ETH_ADDRESS_FROM_IDEALLY_HARDWARE_WALLET> with your ethereum withdrawal address, ideally from a Trezor, Ledger or comparable hardware wallet. Adjust number of validators accordingly.

./deposit new-mnemonic --num_validators 1 --chain zhejiang --eth1_withdrawal_address <ETH_ADDRESS_FROM_IDEALLY_HARDWARE_WALLET>

Run the following, in case of this error: RuntimeError: Click will abort further execution because Python 3 was configured to use ASCII as encoding for the environment.

export LC_ALL=C.UTF-8
export LANG=C.UTF-8

Wagyu Instructions

For the Wagyu key gen app, make sure to select the Zhejiang network and follow the guided steps.

Wagyu (formerly known as StakeHouse) is an application aimed at lowering the technical bar to staking on Ethereum 2.0.

Download Wagyu: https://wagyu.gg

Github: https://github.com/stake-house/wagyu-installer

After creating the validator keys locally, you'll want to copy these validator keys via USB key or rsync file transfer to your staking node.

To align with this guide's steps, first make a default path to store your validator keys

mkdir -p $HOME/staking-deposit-cli/validator_keys

If using USB key, mount the key then copy.

cp <directory-with-keys>/*.json $HOME/staking-deposit-cli/validator_keys

If using rsync, copy your validator keys from your local computer to your staking node with the following command. Change ssh port if needed.

rsync -a "ssh -p 22" <directory-with-keys>/*.json <username>@<remote_host>:/home/<username>/staking-deposit-cli/validator_keys

Don't lose your keystore password and write down your 24 word secret mnemonic key! Ideally keep this offline but for testnet purposes it's okay to save digitally for your convenience.

Step 9. Sign up to be a Validator at the Launchpad

After running the staking deposit tool, you will have a deposit_data-##########.json file which you'll upload to the Launchpad.

Your deposit_data file is located in the following location:

ls $HOME/staking-deposit-cli/validator_keys

Ensure your MetaMask is switched to the Zhejiang Testnet network.

Follow along the instructions at the Launchpad. You'll complete this process when you've uploaded your deposit_data-##########.json file and sent the corresponding 32 Zhejiang testnet ETH deposit to the Zhejiang staking deposit address.

The Zhejiang network staking deposit address is 0x4242424242424242424242424242424242424242

After sending the deposit with Metamask, verify your deposit was completed on a block explorer.

Step 10. Setup Validator Client

Setup Lighthouse Validator

Create a service user for the validator service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group validator
sudo mkdir -p /var/lib/lighthouse/validators/zhejiang

Import your validator keys by importing your keystore file. Be sure to enter your keystore password correctly.

sudo lighthouse account validator import \
  --testnet-dir /var/lib/ethereum/zhejiang/custom_config_data \
  --datadir /var/lib/lighthouse/validators/zhejiang \
  --directory=$HOME/staking-deposit-cli/validator_keys

Setup ownership permissions, including hardening the access to this directory.

sudo chown -R validator:validator /var/lib/lighthouse/validators/zhejiang
sudo chmod 700 /var/lib/lighthouse/validators/zhejiang

Verify that your keystore file was imported successfully.

sudo lighthouse account_manager validator list \
  --testnet-dir /var/lib/ethereum/zhejiang/custom_config_data \
  --datadir /var/lib/lighthouse/validators/zhejiang

Once successful, you will be shown your validator's public key.

For example, 0x8d9138fcf5676e2031dc4eae30a2c92e3306903eeec83ca83f4f851afbd4cb3b33f710e6f4ac516b4598697b30b04302

Monitor your validator's status and performance at https://zhejiang.beaconcha.in by entering your validator's public key.

Create a systemd unit file to define your validator.service configuration.

sudo nano /etc/systemd/system/validator.service

Paste the following configuration into the file. Replace <enter-eth-address-here> with your suggested fee recipient ETH address.

If you wish to customize a graffiti message that is included when you produce a block, add your message between the double quotes after --graffiti.

[Unit]
Description=Lighthouse validator Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=validator
Group=validator
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
ExecStart=/usr/local/bin/lighthouse vc \
  --testnet-dir /var/lib/ethereum/zhejiang/custom_config_data \
  --beacon-nodes http://localhost:5052 \
  --datadir /var/lib/lighthouse/validators/zhejiang \
  --graffiti="" \
  --suggested-fee-recipient=<enter-eth-address-here>

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Setup Teku Validator

Note: Teku combines consensus and validator clients into one binary and service.

First, copy your validator_keys to the data directory.

mkdir -p /var/lib/teku/validator_keys/zhejiang
cp $HOME/staking-deposit-cli/validator_keys/keystore* /var/lib/teku/validator_keys/zhejiang

Storing your keystore password in a text file is required so that Teku can decrypt and load your validators automatically.

Create a file to store your keystore password. Type your password in this file.

nano $HOME/validators-password.txt

To exit and save, press Ctrl + X, then Y, then Enter.

Confirm that your keystore password is correct.

cat $HOME/validators-password.txt

When specifying directories for your validator-keys, Teku expects to find identically named keystore and password files.

For example keystore-m_12221_3600_1_0_0-11222333.json and keystore-m_12221_3600_1_0_0-11222333.txt

Run the following command to create a corresponding password file for every one of your validators.

for f in /var/lib/teku/validator_keys/zhejiang/keystore*.json; do cp $HOME/validators-password.txt /var/lib/teku/validator_keys/zhejiang/$(basename $f .json).txt; done

Setup ownership permissions, including hardening the access to this directory.

sudo chown -R consensus:consensus /var/lib/teku/
sudo chmod -R 700 /var/lib/teku/validator_keys/zhejiang

Verify that your validator's keystore .json files and validator's passwords .txt files are present by checking the following directory.

ll /var/lib/teku/validator_keys/zhejiang

Setup Nimbus Validator

Note: Nimbus combines consensus and validator clients into one binary and service.

The following command will import your validator keys.

Enter your keystore password to import accounts.

sudo /usr/local/bin/nimbus_beacon_node deposits import \
  --data-dir=/var/lib/nimbus/zhejiang $HOME/staking-deposit-cli/validator_keys

Setup ownership permissions, including hardening the access to this directory.

sudo chown -R consensus:consensus /var/lib/nimbus
sudo chmod -R 700 /var/lib/nimbus

Now you can verify the accounts were imported successfully by doing a directory listing.

ll /var/lib/nimbus/zhejiang/validators

You should see a folder named for each of your validator's pubkey.

Setup Lodestar Validator

Create a service user for the validator service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group validator
sudo mkdir -p /var/lib/lodestar/validators/zhejiang

Import your validator keys by importing your keystore file. Be sure to enter your keystore password correctly.

cd /usr/local/bin/lodestar
sudo ./lodestar validator import \
  --dataDir="/var/lib/lodestar/validators/zhejiang" \
  --keystore=$HOME/staking-deposit-cli/validator_keys

Setup ownership permissions, including hardening the access to this directory.

sudo chown -R validator:validator /var/lib/lodestar/validator/zhejiang
sudo chmod 700 /var/lib/lodestar/validator/zhejiang

Verify that your keystore file was imported successfully.

cd /usr/local/bin/lodestar
sudo ./lodestar validator list \
  --dataDir="/var/lib/lodestar/validators/zhejiang"

Once successful, you will be shown your validator's public key.

For example, 0x8d9138fcf5676e2031dc4eae30a2c92e3306903eeec83ca83f4f851afbd4cb3b33f710e6f4ac516b4598697b30b04302

Monitor your validator's status and performance at https://zhejiang.beaconcha.in by entering your validator's public key.

Create a systemd unit file to define your validator.service configuration.

sudo nano /etc/systemd/system/validator.service

Paste the following configuration into the file. Replace <enter-eth-address-here> with your suggested fee recipient ETH address.

If you wish to customize a graffiti message that is included when you produce a block, add your message between the double quotes after --graffiti.

[Unit]
Description=Lodestar validator Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=validator
Group=validator
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=300
WorkingDirectory=/usr/local/bin/lodestar
ExecStart=/usr/local/bin/lodestar/lodestar validator \
  --dataDir="/var/lib/lodestar/validators/zhejiang" \
  --paramsFile="/var/lib/ethereum/zhejiang/custom_config_data/config.yaml" \
  --graffiti="" \
  --suggested-fee-recipient=<enter-eth-address-here>

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Setup Prysm Validator

Create a service user for the validator service, as this improves security, then create data directories.

sudo adduser --system --no-create-home --group validator
sudo mkdir -p /var/lib/prysm/validators/zhejiang

Storing your keystore password in a text file is required so that Prysm can decrypt and load your validators automatically.

Create a file to store your keystore password. Type your password in this file.

sudo nano /var/lib/prysm/zhejiang/validator-data/validators-password.txt

To exit and save, press Ctrl + X, then Y, then Enter.

Confirm that your keystore password is correct.

sudo cat /var/lib/prysm/zhejiang/validator-data/validators-password.txt

Import your validator keys by importing your keystore file. Be sure to enter your keystore password correctly.

cd /usr/local/bin/prysm
sudo bazel run //validator:validator -- accounts import \
  --accept-terms-of-use \
  --wallet-dir=/var/lib/prysm/zhejiang/validator-data \
  --keys-dir=$HOME/staking-deposit-cli/validator_keys

Setup ownership permissions, including hardening the access to this directory.

sudo chown -R validator:validator /var/lib/prysm/zhejiang/validator-data
sudo chmod 700 /var/lib/prysm/zhejiang/validator-data

Verify that your keystore file was imported successfully.

cd /usr/local/bin/prysm
sudo bazel run //validator:validator -- accounts list \
  --wallet-dir=/var/lib/prysm/zhejiang/validator-data

Once successful, you will be shown your validator's public key. For example:

Showing 1 validator account
View the eth1 deposit transaction data for your accounts by running `validator accounts list --show-deposit-data`

Account 0 | strictly-pro-puma
[validating public key] 0x8d9138fcf5676e2031dc4eae30a2c92e3306903eeec83ca83f4f851afbd4cb3b33f710e6f4ac516b4598697b30b04302

Monitor your validator's status and performance at https://zhejiang.beaconcha.in by entering your validator's public key.

Create a systemd unit file to define your validator.service configuration.

sudo nano /etc/systemd/system/validator.service

Paste the following configuration into the file. Replace <enter-eth-address-here> with your suggested fee recipient ETH address.

If you wish to customize a graffiti message that is included when you produce a block, add your message between the double quotes after --graffiti.

[Unit]
Description=Prysm validator Client service for Zhejiang
Wants=network-online.target
After=network-online.target
Documentation=https://www.coincashew.com

[Service]
Type=simple
User=validator
Group=validator
Restart=on-failure
RestartSec=3
KillSignal=SIGINT
TimeoutStopSec=900
WorkingDirectory=/usr/local/bin/prysm
ExecStart=bazel run //cmd/validator --config=release -- \
  --accept-terms-of-use=true \
  --datadir=/var/lib/prysm/zhejiang \
  --chain-config-file=/var/lib/ethereum/zhejiang/custom_config_data/config.yaml \
  --beacon-rpc-provider=http://localhost:4000 \
  --wallet-dir=/var/lib/prysm/zhejiang/validator-data \
  --wallet-password-file=/var/lib/prysm/zhejiang/validator-data/validators-password.txt \
  --suggested-fee-recipient=<enter-eth-address-here> 

[Install]
WantedBy=multi-user.target

To exit and save, press Ctrl + X, then Y, then Enter.

Run the following to enable auto-start at boot time.

sudo systemctl daemon-reload
sudo systemctl enable validator

Finally, start your validator client and check it's status.

sudo systemctl start validator
sudo systemctl status validator

Check your logs to confirm that the validator clients are up and functioning.

journalctl -fu validator | ccze

Example of Synced Validator Client Logs

Lodestar Validator

A properly functioning Lodestar validator will indicate publishing of attestations. For example,

Feb-1  03:33:30.228     info: Published aggregateAndProofs slot=2662, index=13, count=1
Feb-1  03:37:48.393     info: Published attestations slot=2699, index=20, count=1
Feb-1  03:46:36.450     info: Published attestations slot=2713, index=2, count=1
Feb-1  03:53:48.944     info: Published attestations slot=2765, index=21, count=1
Feb-1  04:01:48.812     info: Published attestations slot=2809, index=17, count=1

Lighthouse Validator

Feb 08 01:01:0 INFO Successfully published attestations type: unaggregated, slot: 12422, committee_index: 3, head_block: 0xabc111daedf1281..., validator_indices: [12345], count:1, service: attestation 
Feb 08 01:01:30 INFO Connected to beacon node(s) synced: 1, available: 1, total: 1, service: notifier

Teku Validator

teku[65367]: 03:50:51.761 INFO  - Validator cc1f3ade status is active_ongoing.
teku[65367]: 03:50:52.203 INFO  - Validator   *** Published attestation        Count: 1, Slot: 31362, Root: 90FC0DF4D5958E469134A015203B53B3FB94A0FC1038FB2462882906D4A729A2

Nimbus Validator

nimbus_beacon_node[292966]: INF 2023-02-05 01:25:26.263+00:00 Attestation sent      attestation="(aggregation_bits: 0b00000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000
000000000000000, data: (slot: 31235, index: 3, beacon_block_root: \"ca3213f1\", source: \"1901:9deza1289\", target: \"1901:6ab1fafff\"), signature: \"32173064\")" delay=46ms543us294ns subnet_id=20

Press Ctrl + C to exit the logs.

After making your 32 ETH deposit, your validator is placed into queue for activation which typically takes 6-24 hours. Once activated, your validator begins staking and attestation duties. Learn more about the depositing process.

🎉Congrats on setting up your Zhejiang “Withdrawals” staking node!

Step 11. Next Steps

As a newly minted Zhejiang Ethereum Staker,

• Learn more about what features are introduced and being tested on Zhejiang.

• Monitor your validator's earnings and performance at https://zhejiang.beaconcha.in by entering your validator's public key.

• Learn to connect your MetaMask wallet to your own execution layer node. See step 7, use my own node.

Additional Commands

Stopping the execution, consensus and validator clients

sudo systemctl stop execution

sudo systemctl stop consensus

sudo systemctl stop validator 

Viewing logs / troubleshooting

#View Besu
journalctl -fu execution | ccze

#View Lodestar Beacon Chain
journalctl -fu consensus | ccze

#View Lodestar Validator
journalctl -fu validator | ccze

Extra Testing Commands

Perform a Voluntary Exit

Stop Lodestar validator

sudo systemctl stop validator

Run the voluntary exit command and follow the instructions

# change directories to binary folder
cd /usr/local/bin/lodestar

# the voluntary exit command
./lodestar validator voluntary-exit

Restart validator

sudo systemctl restart validator

Your Github Contributions Welcome

This guide is fully open source and fully powered by home stakers like you. 🙏

Pull requests or issues can be submitted on github:

GitHub - coincashew/coincashew: Your source for EthPillar, Ethereum Staking, Cardano Stake Pool GuidesGitHub

Support Us

These guides are solely supported by Gitcoin Grants and donations to our Cointr.ee by stakers like you. 🙏

A Crypto Donation Platformcryptocointree

BuidlBox - Now part of HackQuestgitcoin.co

Marvelous Reference Material

• Ethpandaops

• Ethereum.org How to Run a Node

• Testing Beacon Chain Withdrawals with Docker by Ladislaus

• Ethereum.org Withrdrawals Guide

• Ethstaker's Zhejiang Testnet Geth Lighthouse Guide by remyroy

Technical Support and Community

• Reddit > https://www.reddit.com/r/ethstaker

• Discord > ethStaker > #zhejiang channel

Last Words

I stand upon the shoulders of giants and as such, invite you to stand upon mine. Use my work with or without attribution; I make no claim of "intellectual property." My ideas are the result of countless millenia of evolution - they belong to humanity.

This is Leslie, the official mascot of Eth Staking