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Prysm Config for Witti v0.11.3

This document describes how to connect to and participate in the Witti testnet using the Prysm ETH2 client. github.com/prysmaticlabs/prysm

Requirements

This requires Bazel, get it here: bazel.build

Note: Bazel will manage the build and dependencies, for other options, please refer to the Prysm documentation. prysmaticlabs.gitbook.io/prysm

To connect to Witti v0.11.3, you would have to compile Prysm from the witti branch. See https://github.com/prysmaticlabs/prysm/tree/witti

git clone https://github.com/prysmaticlabs/prysm.git
cd prysm/
git checkout witti

Bazel build compiles everything.

bazel build //beacon-chain:beacon-chain
bazel build //validator:validator

Beacon Node

Run your beacon node.

bazel run //beacon-chain -- \
--witti-testnet \
--http-web3provider http://127.0.0.1:8545 \
--web3provider ws://127.0.0.1:8546 \
--bootstrap-node enr:-Ku4QJsxkOibTc9FXfBWYmcdMAGwH4bnOOFb4BlTHfMdx_f0WN-u4IUqZcQVP9iuEyoxipFs7-Qd_rH_0HfyOQitc7IBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD1pf1CAAAAAP__________gmlkgnY0gmlwhLAJM9iJc2VjcDI1NmsxoQL2RyM26TKZzqnUsyycHQB4jnyg6Wi79rwLXtaZXty06YN1ZHCCW8w,enr:-LK4QKTkBk3I1y4__nfX18Jdhcko2ExQzqpr8byjTB7t8HVFTLKNvipBZbPItODKWFdhBVN8vVh89ScZPdSTNoiLXXoBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD2d10HAAABE___________gmlkgnY0gmlwhLAJM9iJc2VjcDI1NmsxoQICvB04SDhZK46nvJmm6GZvo8RsKctq4uWK6jQRZBxewoN0Y3CCIyiDdWRwgiMo,enr:-LK4QO-InqtcvYyJysIC8m-GimjQxeh2fMYNg557rfLD3iOtK5rZo6-1N09tw0NeIt4ht2rLtCNS6NGwU38qarXaVUMBh2F0dG5ldHOIAAAAAAAAAACEZXRoMpD2d10HAAABE___________gmlkgnY0gmlwhLAJM9iJc2VjcDI1NmsxoQISU9N1Kj03Z-IBVlevP56X9qkZxA1fv62TLRKlfzI1LYN0Y3CCMsiDdWRwgi7g,enr:-KG4QOWbLS8XipfTFUjjaboBG8F4fkw7YtSSvvenmlGz6z8LeknOAxokwlhQWwiV3AftLgreD8hC94EnXdYzw93aVdQDhGV0aDKQ9nddBwAAARP__________4JpZIJ2NIJpcISwCTPYiXNlY3AyNTZrMaECLYJchUH6A-oyZenBKm5hLwIDy6xZqksxOt24irvEOEuDdGNwgnUwg3VkcIJ1MA

Note, the config assumes you have an ETH1 Goerli node running on localhost with WS APIs enabled. If you don't have any ETH1 node locally, just skip the web3provider flags and the node will default to the public Prysmatic Labs Goerli endpoint.

Validator Deposits

The validator contract is deployed on Goerli testnet address 0x42cc0FcEB02015F145105Cf6f19F90e9BEa76558.

To generate a new validator keypair, run:

bazel run //validator -- accounts create \
--witti-testnet \
--keystore-path ${PATH_TO_SECURE_BACKUP}/validators \
--password "${MY_SECRET_PASSWORD}"

This will output binary data that can be directly sent to the deposit contract along with 32 GöETH, e.g., for the Geth Console:

eth.sendTransaction({from:eth.coinbase, to:"0x42cc0FcEB02015F145105Cf6f19F90e9BEa76558", value:32000000000000000000, data:"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"})

Validator Client

To start validating, open another terminal and launch the validator client:

bazel run //validator -- \
--witti-testnet \
--keymanager "keystore" \
--keymanageropts='{"passphrase":"${MY_SECRET_PASSWORD}", "path":"${PATH_TO_SECURE_BACKUP}/validators"}' \
--graffiti "Hello Witti"

Note, Prysm allows you to set a custom --graffiti. :)

That's it. Please create an issue if this does not work. We will figure it out: github.com/goerli/witti/issues/new