Dencun devnet-8 Testing

Devnet-8 Links

Request some devnet eth from one of the faucets here:
https://dencun-devnet-8.ethpandaops.io/

Run a node on Devnet v8 (Lighthouse/Geth)

git clone https://github.com/jimmygchen/eip4844-devnet.git
cd eip4844-devnet
docker-compose up -d --build

Sending Blobs

Nethermind's SendBlobs

Nethermind's SendBlobs tool can be found here.

Blob-utils

git clone https://github.com/Inphi/blob-utils.git
cd blob-utils
go build

# for Mac with Apple M1/M2 chips, build with these flags:
CGO_CFLAGS="-O -D__BLST_PORTABLE__" CGO_CFLAGS_ALLOW="-O -D__BLST_PORTABLE__" go build

Sending a blob

Replace your_private_key with your private key.

./blob-utils tx --rpc-url http://localhost:8545 \
    --blob-file <(echo hello) \
    --to 0xC8D369B164361A8961286CFbaB3bc10F962185a8 \
    --private-key <your_private_key> \
    --gas-limit 210000 \
    --chain-id 7011893058 \
    --priority-gas-price 200000000 \
    --max-fee-per-blob-gas 300000000

Downloading a blob via Beacon API

# look up by slot
curl http://localhost:5052/eth/v1/beacon/blob_sidecars/68267 | jq .