LN-EigenDA Proxy Server

Permanent EigenDA blobs

Links

EigenDA proxy: repository

About EigenDA Side Server Proxy

LN-EigenDA wraps the high-level EigenDA client, exposing endpoints for interacting with the EigenDA disperser in conformance to the OP Alt-DA server spec, and adding disperser verification logic. This simplifies integrating EigenDA into various rollup frameworks by minimizing the footprint of changes needed within their respective services.

About LN-EigenDA Side Server Proxy Integration

It's a Load Network integration as a secondary backend of eigenda-proxy. In this scope, Load Network provides an EVM gateway/interface for EigenDA blobs on Arweave's Permaweb, removing the need for trust assumptions and relying on centralized third party services to sync historical data and provides a "pay once, save forever" data storage feature for EigenDA blobs.

Key Details

• Current maximum encoded blob size is 8 MiB (8_388_608 bytes).

• Load Network currently operating in public testnet (Alphanet) - not recommended to use it in production environment.

Prerequisites and Resources

1. Review the configuration parameters table and .env file settings for the Holesky network.

2. Obtain test tLOAD tokens through our faucet for testing purposes.

3. Monitor your transactions using the Load Network explorer.

Usage Examples

Please double check .env file values you start eigenda-proxy binary with env vars. They may conflict with flags.

Start eigenda proxy with LN private key:

./bin/eigenda-proxy \
    --addr 127.0.0.1 \
    --port 3100 \
    --eigenda.disperser-rpc disperser-holesky.eigenda.xyz:443 \
    --eigenda.signer-private-key-hex $PRIVATE_KEY \
    --eigenda.max-blob-length 8Mb \
    --eigenda.eth-rpc https://ethereum-holesky-rpc.publicnode.com \
    --eigenda.svc-manager-addr 0xD4A7E1Bd8015057293f0D0A557088c286942e84b \
    --weavevm.endpoint https://alphanet.load.network/ \
    --weavevm.chain_id 9496 \
    --weavevm.enabled \
    --weavevm.private_key_hex $WVM_PRIV_KEY \
    --storage.fallback-targets weavevm \
    --storage.concurrent-write-routines 2 

POST command:

curl -X POST "http://127.0.0.1:3100/put?commitment_mode=simple" \
      --data-binary "some data that will successfully be written to EigenDA" \
      -H "Content-Type: application/octet-stream" \
      --output response.bin

GET command:

COMMITMENT=$(xxd -p response.bin | tr -d '\n' | tr -d ' ')
curl -X GET "http:/127.0.0.1:3100/get/0x$COMMITMENT?commitment_mode=simple" \
     -H "Content-Type: application/octet-stream"

Examples using Web3signer as a remote signer

Web3 signer

Web3Signer is a tool by Consensys which allows remote signing.

Warnings

Using a remote signer comes with risks, please read the web3signer docs. However this is a recommended way to sign transactions for enterprise users and production environments. Web3Signer is not maintained by Load Network team. Example of the most simple local web3signer deployment (for testing purposes): https://github.com/allnil/web3signer_test_deploy

start eigenda proxy with signer:

./bin/eigenda-proxy \
    --addr 127.0.0.1 \
    --port 3100 \
    --eigenda.disperser-rpc disperser-holesky.eigenda.xyz:443 \
    --eigenda.signer-private-key-hex $PRIVATE_KEY \
    --eigenda.max-blob-length 8MiB \
    --eigenda.eth-rpc https://ethereum-holesky-rpc.publicnode.com \
    --eigenda.svc-manager-addr 0xD4A7E1Bd8015057293f0D0A557088c286942e84b \
    --weavevm.endpoint https://alphanet.load.network/ \
    --weavevm.chain_id 9496 \
    --weavevm.enabled \
    --weavevm.web3_signer_endpoint http://localhost:9000 \
    --storage.fallback-targets weavevm \
    --storage.concurrent-write-routines 2 

start web3signer tls:

./bin/eigenda-proxy \
    --addr 127.0.0.1 \
    --port 3100 \
    --eigenda.disperser-rpc disperser-holesky.eigenda.xyz:443 \
    --eigenda.signer-private-key-hex $PRIVATE_KEY \
    --eigenda.max-blob-length 8MiB \
    --eigenda.eth-rpc https://ethereum-holesky-rpc.publicnode.com \
    --eigenda.svc-manager-addr 0xD4A7E1Bd8015057293f0D0A557088c286942e84b \
    --weavevm.endpoint https://testnet-rpc.wvm.dev/ \
    --weavevm.chain_id 9496 \
    --weavevm.enabled \
    --weavevm.web3_signer_endpoint https://localhost:9000 \
    --storage.fallback-targets weavevm \
    --storage.concurrent-write-routines 2 \
    --weavevm.web3_signer_tls_cert_file $SOME_PATH_TO_CERT \
    --weavevm.web3_signer_tls_key_file $SOME_PATH_TO_KEY \
    --weavevm.web3_signer_tls_ca_cert_file $SOME_PATH_TO_CA_CERT