Prysm x Geth EIP4844 Interop (h/t @terencechain)

Prysm setup

Clone the eip4844 branch in the Prysm repo and build the binaries







$ git clone https://github.com/prysmaticlabs/prysm.git
$ cd prysm
$ git checkout eip4844
$ bazel build //cmd/prysmctl
$ bazel build //cmd/beacon-chain
$ bazel build //cmd/validator
$ cd ../

Geth setup

Clone the eip-4844 branch in mdehoog's geth repo and build the binary




$ git clone https://github.com/mdehoog/go-ethereum.git
$ cd go-ethereum
$ git checkout eip-4844
$ make geth

Create the config files

Create the following config files and remember the location of each config file

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Create a genesis.json file and remember path as $PATH_TO_GENESIS










































































































{
	"config": {
		"ChainName": "l1_chain",
		"chainId": 32382,
		"consensus": "clique",
		"homesteadBlock": 0,
		"daoForkSupport": true,
		"eip150Block": 0,
		"eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
		"eip155Block": 0,
		"eip158Block": 0,
		"byzantiumBlock": 0,
		"constantinopleBlock": 0,
		"petersburgBlock": 0,
		"istanbulBlock": 0,
		"muirGlacierBlock": 0,
		"berlinBlock": 0,
		"londonBlock": 0,
		"terminalBlockHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
		"arrowGlacierBlock": 0,
		"grayGlacierBlock": 0,
        "shanghaiTime": XXX,
        "shardingForkTime": YYY,
		"clique": {
			"period": 5,
			"epoch": 30000
		},
		"terminalTotalDifficulty": 50
	},
	"difficulty": "1",
	"gasLimit": "30000000",
	"extradata": "0x0000000000000000000000000000000000000000000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
	"alloc": {
		"0x4242424242424242424242424242424242424242": {
			"balance": "0",
			"code": "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		},
		"0x123463a4B065722E99115D6c222f267d9cABb524": {
			"balance": "20000000000000000000000"
		},
		"0x5678E9E827B3be0E3d4b910126a64a697a148267": {
			"balance": "20000000000000000000000"
		},
		"0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266": {
			"balance": "10000000000000000000000"
		},
		"0x70997970c51812dc3a010c7d01b50e0d17dc79c8": {
			"balance": "10000000000000000000000"
		},
		"0x3c44cdddb6a900fa2b585dd299e03d12fa4293bc": {
			"balance": "10000000000000000000000"
		},
		"0x90f79bf6eb2c4f870365e785982e1f101e93b906": {
			"balance": "10000000000000000000000"
		},
		"0x15d34aaf54267db7d7c367839aaf71a00a2c6a65": {
			"balance": "10000000000000000000000"
		},
		"0x9965507d1a55bcc2695c58ba16fb37d819b0a4dc": {
			"balance": "10000000000000000000000"
		},
		"0x976ea74026e726554db657fa54763abd0c3a0aa9": {
			"balance": "10000000000000000000000"
		},
		"0x14dc79964da2c08b23698b3d3cc7ca32193d9955": {
			"balance": "10000000000000000000000"
		},
		"0x23618e81e3f5cdf7f54c3d65f7fbc0abf5b21e8f": {
			"balance": "10000000000000000000000"
		},
		"0xa0ee7a142d267c1f36714e4a8f75612f20a79720": {
			"balance": "10000000000000000000000"
		},
		"0xbcd4042de499d14e55001ccbb24a551f3b954096": {
			"balance": "10000000000000000000000"
		},
		"0x71be63f3384f5fb98995898a86b02fb2426c5788": {
			"balance": "10000000000000000000000"
		},
		"0xfabb0ac9d68b0b445fb7357272ff202c5651694a": {
			"balance": "10000000000000000000000"
		},
		"0x1cbd3b2770909d4e10f157cabc84c7264073c9ec": {
			"balance": "10000000000000000000000"
		},
		"0xdf3e18d64bc6a983f673ab319ccae4f1a57c7097": {
			"balance": "10000000000000000000000"
		},
		"0xcd3b766ccdd6ae721141f452c550ca635964ce71": {
			"balance": "10000000000000000000000"
		},
		"0x2546bcd3c84621e976d8185a91a922ae77ecec30": {
			"balance": "10000000000000000000000"
		},
		"0xbda5747bfd65f08deb54cb465eb87d40e51b197e": {
			"balance": "10000000000000000000000"
		},
		"0xdd2fd4581271e230360230f9337d5c0430bf44c0": {
			"balance": "10000000000000000000000"
		},
		"0x8626f6940e2eb28930efb4cef49b2d1f2c9c1199": {
			"balance": "10000000000000000000000"
		}
	}
}

Note that shanghaiTime is hardcoded as XXX and shardingForkTime is hardcoded as YYY. They will be repalced later by real fork unix times

Create a config.yml file and remember path as $PATH_TO_CONFIG






























CONFIG_NAME: interop
PRESET_BASE: interop

# Genesis
GENESIS_FORK_VERSION: 0x20000089

# Altair
ALTAIR_FORK_EPOCH: 2
ALTAIR_FORK_VERSION: 0x20000090

# Merge
BELLATRIX_FORK_EPOCH: 3
BELLATRIX_FORK_VERSION: 0x20000091
TERMINAL_TOTAL_DIFFICULTY: 50

# Capella
CAPELLA_FORK_EPOCH: 4
CAPELLA_FORK_VERSION: 0x20000092
MAX_WITHDRAWALS_PER_PAYLOAD: 4

# EIP4844
EIP4844_FORK_EPOCH: 5
EIP4844_FORK_VERSION: 0x20000093

# Time parameters
SECONDS_PER_SLOT: 6
SLOTS_PER_EPOCH: 6

# Deposit contract
DEPOSIT_CONTRACT_ADDRESS: 0x4242424242424242424242424242424242424242

Create a jwtsecret.txt file and remember path as $PATH_TO_JWTSECRET

0xfad2709d0bb03bf0e8ba3c99bea194575d3e98863133d1af638ed056d1d59345

Interop time

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Image Not Showing Possible Reasons

The image file may be corrupted
The server hosting the image is unavailable
The image path is incorrect
The image format is not supported

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We MUST launch the beacon node before geth; messing up the order will result in run time failure and you will have to start from scratch

Beacon node
Validator
Geth

Start beacon node

First you will need to CD to your Prysm directory. Set up your genesis time and set up Shanghai hardfork time to 144 seconds later. Please fill in $PATH_TO_GENESIS to the location that you created earlier. Then Run the following:










#!/bin/bash
GENESIS=$(($(date +%s) + 120)) # 120s until genesis, feel free to increase this to give you more time to everything

# The following are configureable too but you have to make sure they align.
# Take SECONDS_PER_SLOT * SLOTS_PER_EPOCH * CAPELLA_FORK_EPOCH for SHANGHAI
# Take SECONDS_PER_SLOT * SLOTS_PER_EPOCH * EIP4844_FORK_EPOCH for CANCUN
SHANGHAI=$(($GENESIS + 144))
CANCUN=$(($GENESIS + 180))
sed -i -e 's/XXX/'$SHANGHAI'/' $PATH_TO_GENESIS/genesis.json
sed -i  -e 's/YYY/'$CANCUN'/' $PATH_TO_GENESIS/genesis.json

Within your Prysm directory. Please fill in $PATH_TO_DATADIR. Selection where you want the database to be















bazel run //cmd/prysmctl -- testnet generate-genesis --num-validators=512 --output-ssz=$PATH_TO_DATADIR/genesis.ssz --chain-config-file=$PATH_TO_CONFIG/config.yml --genesis-time=$GENESIS

bazel run //cmd/beacon-chain -- \
        --datadir=$PATH_TO_DATADIR \
	--min-sync-peers=0 \
        --force-clear-db \
	--interop-genesis-state=$PATH_TO_DATADIR/genesis.ssz \
	--interop-eth1data-votes \
	--bootstrap-node= \
	--chain-config-file=$PATH_TO_CONFIG/config.yml \
	--chain-id=32382 \
	--accept-terms-of-use \
	--jwt-secret=$PATH_TO_JWTSECRET/jwtsecret.txt \
	--suggested-fee-recipient=0x123463a4b065722e99115d6c222f267d9cabb524 \
	--verbosity debug

Start validator

Within your prysm directory, run the following to start the validator:






bazel run //cmd/validator -- \
    --datadir=$PATH_TO_DATADIR \
	--accept-terms-of-use \
	--interop-num-validators=512 \
	--interop-start-index=0 \
	--chain-config-file=$PATH_TO_CONFIG/config.yml

Start geth

Last but not least, we need to start geth. CD to your Geth directory. You will need to find a location to store Geth data $PATH_TO_GETH. Then run the following:

GETH_KEYSTORE_DIR=${PATH_TO_GETH}/keystore

BLOCK_SIGNER_PRIVATE_KEY="45a915e4d060149eb4365960e6a7a45f334393093061116b197e3240065ff2d8"
#BLOCK_SIGNER_ADDRESS="0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b"

if [ ! -d "$GETH_KEYSTORE_DIR" ]; then
    echo "$GETH_KEYSTORE_DIR missing, running account import"
    touch ${PATH_TO_GETH}/password
    echo -n "$BLOCK_SIGNER_PRIVATE_KEY" | sed 's/0x//' > "$PATH_TO_GETH"/block-signer-key
    geth4844 account import \
        --datadir="$PATH_TO_GETH" \
        --password="$PATH_TO_GETH"/password \
        "$PATH_TO_GETH"/block-signer-key
else
    echo "$GETH_KEYSTORE_DIR exists"
fi

./build/bin/geth --datadir $PATH_TO_GETH init $PATH_TO_GENESIS/genesis.json

./build/bin/geth --http \
    --datadir=$PATH_TO_GETH \
    --nodiscover \
    --syncmode=full \
    --allow-insecure-unlock \
    --password "${PATH_TO_GETH}/password" \
    --unlock "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b" \
    --authrpc.jwtsecret=$PATH_TO_JWTSECRET/jwtsecret.txt \
    --mine

How do you know it's working?

Genesis state generated

Chain started (ignore unknown finalized root errors)

Forked to Bellatrix and Merged

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The server hosting the image is unavailable
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Forked to Capella (ignore any sync errors)

Forked to EIP4844

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.oO

Syntax	Example	Reference
# Header	Header	基本排版
- Unordered List	Unordered List
1. Ordered List	Ordered List
- [ ] Todo List	Todo List
> Blockquote	Blockquote
Bold font	Bold font
Italics font	Italics font
~~Strikethrough~~	~~Strikethrough~~
19^th^	19^th
H~2~O	H₂O
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==Marked text==	Marked text
[link text](https:// "title")	Link
![image alt](https:// "title")	Image
`Code`	`Code`	在筆記中貼入程式碼
```javascript var i = 0; ```	`var i = 0;`	在筆記中貼入程式碼
:smile:		Emoji list
{%youtube youtube_id %}	Externals
$L^aT_eX$	L^aT_eX
:::info This is a alert area. :::	This is a alert area.

Prysm x Geth EIP4844 Interop (h/t @terencechain)

Prysm setup

Geth setup

Create the config files

Interop time Image Not Showing Possible Reasons The image file may be corruptedThe server hosting the image is unavailableThe image path is incorrectThe image format is not supported Learn More →

Start beacon node

Start validator

Start geth

How do you know it's working?

Interop time

Image Not Showing Possible Reasons
The image file may be corrupted
The server hosting the image is unavailable
The image path is incorrect
The image format is not supported
Learn More →