Proto-Danksharding (EIP-4844) Devnet v3 User Guide

• Proto-Danksharding (EIP-4844) Devnet v3 User Guide
  • Getting Devnet-3 ETH
  • Uploading Blobs
  • Downloading Blobs
  • Public Endpoints
  • Configuration
    • Execution bootstrap nodes
    • Beacon boostrap nodes
  • Troubleshooting/assistance

Getting Devnet-3 ETH

You can request devnet ETH from the deployed Multifaucet: https://eip4844-faucet.vercel.app/

Uploading Blobs

Blobs can be uploaded by sending blob transactions to geth. blob-utils is a handy script that makes it easy to send blob transactions:

blob-utils tx\
    -rpc-url <your_geth_rpc_url>\
    -blob-file <blob_file>\
    -to <to_address>\
    -value <value>\
    -chain-id 1331\
    -private-key <account_private_key>

Downloading Blobs

Blobs can be retrieved from the beacon chain network. blob-utils lets you do this easily:

blob-utils download\
    --beacon-p2p-addr <beacon_node_p2p_address>\
    --slot <beacon block slot>

Public Endpoints

Here are a couple endpoints you may use to interact with the devnet.

Execution RPC: https://eip-4844-alpha.optimism.io

Beacon nodes:

• /ip4/34.121.33.53/tcp/13000/p2p/16Uiu2HAkwy4MJBLsCvmuPwrfVX9GqNiGeppshnsbn2BgKskCtRDE
• /ip4/34.122.190.151/tcp/13000/p2p/16Uiu2HAmHd6WSHUEB7SrxdDR8dPVLTJqkzgPGbriej15udyQZugY
• /ip4/34.123.117.254/tcp/13000/p2p/16Uiu2HAmSLVoxaR1ztHqBjezWFSvFa3HeTWPZNswfS4aMWob59L6

Configuration

If you're client dev, you'll need the following configs to peer with the devnet.

• Geth genesis configuration: https://github.com/Inphi/eip4844-testnet/blob/devnet-3/genesis.json
• Beacon State Genesis: https://github.com/Inphi/eip4844-testnet/blob/devnet-3/genesis.ssz
• Beacon chain configuration: https://github.com/Inphi/eip4844-testnet/blob/devnet-3/config.yml

There isn't a bootnode for the devnet. But you can peer directly with the following nodes to join the network:

Execution bootstrap nodes

enode://fdefa8b36717bd246ce338e952a3b949e608158d06c74c8b9e207439f70bfc63da27b7a4c4161a14722f7d4a256fda9c93a6dd5c26624b6a523dca2cd852ad97@34.121.33.53:30303?discport=0

Network ID is 1331.

Beacon boostrap nodes

enr:-MK4QNbUbou2Vr7FsG_Mm9luJuY-6L8nT6-Zl8tSBpmAEtVEBKGZxlazo-xGsmUCppD8X1JRoPekMP3Ysr39H54_iN6GAYU61xS5h2F0dG5ldHOIAAAAAAAAAACEZXRoMpA3FbaXIAAAk_gmlkgnY0gmlwhCJ5ITWJc2VjcDI1NmsxoQIlwaxycUgJ_Ht4lYdDlInbIuRxu0HcHcFbu0D7As2SLYhzeW5jbmV0cwCDdGNwgjLIg3VkcIIu4A

enr:-MK4QBqN5McD5YYgfEnfQjWUvrSaCITjBvQevlP5q0nCVbKuZRoa2XvGWOBwTDQyLNYiqgeettVwXs0PrSc1rOY2rjKGAYU2M7A8h2F0dG5ldHOIAAAAAAAAAgCEZXRoMpA3FbaXIAAAk_gmlkgnY0gmlwhCJ6vpeJc2VjcDI1NmsxoQNJzjxNKr7-a-iEDs0KvaL_vo1UH91kefEiWzgAdwSntYhzeW5jbmV0cw-DdGNwgjLIg3VkcIIu4A

enr:-MK4QEzb6r0hpSyiko9u-mbEX1TzdTD9RcSiU4jhey5jJbTAHLdXNFR32CfjingVa6QMyCPtZRUfzSGbJ0ur3-Pdxe-GAYU2OwM5h2F0dG5ldHOIAAAAAAAAAACEZXRoMpA3FbaXIAAAk_gmlkgnY0gmlwhCPi7faJc2VjcDI1NmsxoQIKBTGU_riCSYrscdRCLuocbNzhF9RTNItPfD4_PmYngIhzeW5jbmV0cwCDdGNwgjLIg3VkcIIu4A

Try not to get your node banned

Troubleshooting/assistance

If you have issues running the devnet, please reach out in the #4844-testing channel of the Eth R&D discord.**