evm/deployments/alternative-l2s/op-stack

OP Stack L2 on Lux

Deploy an Optimism-compatible L2 using Lux for data availability.

Overview

This configuration deploys an OP Stack L2 that:

• Uses Lux C-Chain for data availability (cheaper than Ethereum)
• Maintains full OP Stack compatibility
• Supports all Optimism tooling
• Enables fast withdrawals via Lux

Components

1. L1 Contracts (deployed on Lux C-Chain)

   • SystemConfig
   • L1CrossDomainMessenger
   • L1StandardBridge
   • OptimismPortal

2. L2 Components

   • op-node: Rollup node
   • op-geth: Execution client
   • op-batcher: Transaction batcher
   • op-proposer: State root proposer

Deployment

Prerequisites

# Clone OP Stack
git clone https://github.com/ethereum-optimism/optimism.git
cd optimism

# Install dependencies
pnpm install
make install-geth

Deploy L1 Contracts on Lux

# Set Lux RPC
export L1_RPC_URL=https://api.lux.network/rpc
export PRIVATE_KEY=<your-deployment-key>

# Deploy contracts
cd packages/contracts-bedrock
forge script scripts/Deploy.s.sol:Deploy \
  --rpc-url $L1_RPC_URL \
  --private-key $PRIVATE_KEY \
  --broadcast \
  --verify

Configure L2

Create config.json:

{
  "l1_chain_id": 96369,
  "l2_chain_id": 42069,
  "l1_rpc": "https://api.lux.network/rpc",
  "l2_genesis": {
    "baseFeePerGas": "0x3b9aca00",
    "gasLimit": "0x1c9c380"
  }
}

Start L2 Services

# Start op-geth
./op-geth \
  --datadir ./datadir \
  --http \
  --http.port 8545 \
  --http.addr 0.0.0.0 \
  --authrpc.vhosts="*" \
  --authrpc.addr 0.0.0.0 \
  --authrpc.port 8551

# Start op-node
./op-node \
  --l1=https://api.lux.network/rpc \
  --l2=http://localhost:8551 \
  --network=custom \
  --rpc.addr=0.0.0.0 \
  --rpc.port=8547

Bridge Assets

// Bridge LUX to OP L2
const bridge = new ethers.Contract(L1_BRIDGE_ADDRESS, L1_BRIDGE_ABI, signer);
await bridge.depositETH(0, "0x", { value: ethers.parseEther("1.0") });

Monitoring

• L2 RPC: http://localhost:8545
• Rollup Node: http://localhost:8547
• Metrics: http://localhost:7300/metrics

Cost Analysis

Using Lux instead of Ethereum for data availability:

• ~95% reduction in data costs
• 2s L1 finality (vs 12s on Ethereum)
• Same security model with fraud proofs