Holesky Setup

Watchtower Client Setup for an EigenLayer node operator

Testnet is available on Holesky

We have our pre-built binaries in form of container images hosted on docker hub. The following is a quick start guide on running the same for a node operator who is interested to setup a diligence watchtower on the Holesky chain

Prerequisites

• Read the Node Requirements, if you haven't

• Access

  • Watchtower Node Operator should be a registered EigenLayer Node Operator.

    • Formal guide to register

  • Registered EL Operator needs to be whitelisted on Witness Chain Network. Whitelisting will be done with the help of the Witness Chain team through a whitelisting process. If you are not sure how, Steps for setup will guide you through it.

• Software

  • Docker client, engine and container runtime installed (version 23.0.0 or above, refer: https://docs.docker.com/desktop/install/linux-install/)

• Hardware

  • Hardware requirements for the watchtower node can accessed here

  • One of the node configurations as described in the Node Types section below. Don't worry about how to configure right now ! As long as you have access to one of the configurations, we are good. We have you covered in the Steps for setup section !

Node Types

The node operator is expected to deploy the watchtower container alongside both L1 and L2 Archived nodes in the ideal scenario. But, we offer a few more configurations if you would like to re-use some of your existing infrastructure or setup. The configuration parameters for the L1 and L2 Archived nodes may belong to one of the following distinct categories.

Configuration Type	L1 Node	L2 Node
Light	Use a Hosted L1 Node RPC Provider	Use Witness Chain provided L2 Node snapshot to bootstrap the node
Medium	Use a Hosted L1 Node RPC Provider	Run an L2 Archive Node synced from a public checkpoint
Full	Run an L1 Full Node	Run an L2 Archive Node synced from a public checkpoint

Steps for setup

Note: Make sure there aren't any older version of watchtower images or containers. Use the below command to remove older/stale images

docker rm <stale_container_id>

docker rmi -f <stale_image_name>

Step 1: Register with EigenLayer as an Operator

ONLY If you aren't yet an EigenLayer Operator yet, HOW TO can be found here

Step 2: Get whitelisted on the Watchtower Network.

The Witness Chain watchtower network is a permissioned network currently. Please connect with us on our Discord, if you want to become a watchtower operator

Step 3: Register the operator on the Witness Chain Watchtower Network

Before you start any activity on this network, ensure your operator and watchtower addresses are sufficiently funded to cover the gas costs. Use the faucet to fund it.

Register your EL operator address on the WitnessChain OperatorRegistry contract. You can do so with the help of our CLI utility.

Prerequisites

The CLI tool expects Ubuntu 22.04 (if you are running on linux) or if you are running on Ubuntu 20.04, ensure the glibc version is 2.34+

# Run ldd --version to get the GLIBC version
ldd --version

Step 3.1 : Installation and Running the CLI

1. Installation:

   curl -sSfL https://witnesschain-com.github.io/install-operator-cli-testnet | bash

2. Running:

   export PATH="$PATH:~/.witnesschain/cli/"
   watchtower-operator --version
   
   Expected VERSION:
      v0.3.0

If you are facing the following error, please upgrade to Ubuntu 22.04

$ watchtower-operator --version

watchtower-operator: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by watchtower-operator)

watchtower-operator: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by watchtower-operator)

Step 3.2 : Registering the operator and the watchtowers

Once you've ensured the tool is installed correctly, run the below commands to register the operator with our AVS and associate the watchtowers to the operator.

Note: Refer to our FAQs to understand the difference between watchtower addresses and operator addresses

Setup the configuration files for the OPERATOR CLI

operator-config.json

# Set of watchtower private keys that will sign the Diligence Proofs. 
# This is used for registration purposes
# Registration will happen both on L1 and L2 simultaneously

{
  "watchtower_private_keys": [
    "<raw-watchtower-private-key e.g. 0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef>"
  ],
  "operator_private_key": "<raw-watchtower-private-key e.g. 0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef>",
  "eth_rpc_url": "https://ethereum-holesky-rpc.publicnode.com", 
  "proof_submission_rpc_url": "https://blue-orangutan-rpc.eu-north-2.gateway.fm/"
}

If you are operating a Smart Contract Wallet as the operator address
then 

set 

"eth_rpc_url": ""

This will register the Operator EoA only on L2.

# Registers the Operator to WitnessHub AVS on EigenLayer 
# This is required for the Operator to be listed on EigenLayer's 
# AVS-Operator Page (https://holesky.eigenlayer.xyz/avs/0xa987ec494b13b21a8a124f8ac03c9f530648c87d)

# Witnesschain Txns can be monitored via Blockscout at 
# https://witnesschain-testnet-blockscout.eu-north-2.gateway.fm

$ watchtower-operator registerOperatorToAVS --config-file <path to operator-config.json file>

# Registers the Operator's watchtower to WitnessHub AVS on Layer 1 
# and Witness Chain's L2 CDK Chain
# This registration is required for operators to be associated with the 
# points awarded as a result of diligently watching the chains.
# To understand what are watchtowers, please read the FAQs

$ watchtower-operator registerWatchtower --config-file <path to operator-config.json file>

Mask the operator private-keys or remove it from the config files once the registration process is complete. We don't require it for submitting the bounties in this file

Step 4: Submitting the bounties

1. Post the registrations are complete, install the watchtower client, by running the following command.

Note: Make sure there aren't any older version of watchtower images or containers. Use the below command to remove older/stale images

docker rm <stale_container_id>

docker rmi -f <stale_image_name>

curl https://witnesschain-com.github.io/install-watchtower-testnet | sh

The above command will guide you through the rest of installation process.