L2 Blockchains

Sunrise Documents

• Rollkit

  • Sunrise Data - Configure and run the Sunrise DA relay

  • Rollkit L2 Chain - Build and deploy a Rollkit-based L2

• Optimism OP Stack

  • Sunrise Data - Set up Sunrise DA for OP Stack

  • OP Stack L2 Chain - Deploy an OP Stack L2 with Sunrise

How to create L2

It is recommended to run the full consensus node locally, without relying on an external RPC. This ensures better reliability and control over your L2 deployment.

Sunrise Consensus Node Document

Rollkit

sunrise-data, and rollkit need to be run. The integration provides:

• Native data availability through Sunrise

• Sovereign rollup capabilities

• Customizable execution environment

• Simple configuration and deployment

OP Stack

sunrise-data, optimism and op-geth need to be run. Key points:

• The local EVM L1 chain is only used to meet OP Stack requirements

• The actual data (metadata) is stored in Sunrise

• Use Ganache, Hardhat, Anvil or similar for local L1 chain

• Sunrise handles the actual data availability

Requirements

Type	CPU	Architecture	Mem	Disk	Bandwidth	Purpose
Rollkit + Sunrise Data	4 Core	x86_64	16 GB	1 TB SSD	1 Gbps	Development and testing
OP Stack + Sunrise Data	6 Core	x86_64	32 GB	1 TB SSD	1 Gbps	Production deployment

Additional considerations:

• SSD should be enterprise-grade for production

• Bandwidth requirements increase with transaction volume

• Memory requirements scale with state size

Official Document

• Rollkit

  • BeaconKit (option): By combining BeaconKit and Rollkit, EVM compatible L2 blockchain is possible to develop.
  • Provides full EVM compatibility while maintaining Sunrise DA benefits

• OP Stack

  • Comprehensive documentation for OP Stack deployment

  • Integration guides for various components

Integration Architecture

┌─────────────────┐     ┌─────────────────┐     ┌─────────────────┐
│                 │     │                 │     │                 │
│  L2 Blockchain  │────▶│  Sunrise DA     │────▶│  Validator      │
│                 │     │  Layer          │     │  Network        │
└─────────────────┘     └─────────────────┘     └─────────────────┘
        │                       │                       ▲
        │                       │                       │
        ▼                       ▼                       │
┌─────────────────┐     ┌─────────────────┐             │
│                 │     │                 │             │
│  User           │     │  DA Proof       │─────────────┘
│  Applications   │     │  Verification   │
└─────────────────┘     └─────────────────┘

Common Integration Steps

1. Setup Sunrise DA Node

   • Deploy a Sunrise node or connect to the testnet

   • Configure network parameters

   • Set up validator if needed

   • Verify node synchronization

2. Configure L2 Framework

   • Install required dependencies

   • Set up configuration files

   • Connect to Sunrise DA layer

   • Configure network parameters

3. Implement DA Integration

   • Configure blob submission

   • Set up proof verification

   • Implement fee handling

   • Set up monitoring

4. Testing and Deployment

   • Test on testnet

   • Verify DA proofs

   • Deploy to production

   • Monitor performance

Configuration Examples

Rollkit Configuration

[da]
rpc_address = "http://localhost:26657"
fee_denom   = "urise"
gas_price   = "0.025"

[rollup]
chain_id = "my-rollup-1"

OP Stack Configuration

# Environment variables
DA_SERVER=http://localhost:8547
BLOB_RPC=http://localhost:26657

Best Practices

1. Security

   • Always verify DA proofs

   • Use secure RPC endpoints

   • Implement proper error handling

   • Regular security audits

2. Performance

   • Optimize blob sizes

   • Implement proper caching

   • Monitor gas costs

   • Regular performance testing

3. Reliability

   • Implement retry mechanisms

   • Monitor DA proof status

   • Set up proper logging

   • Regular backups

Troubleshooting

Issue	Solution	Prevention
DA proofs not verifying	Check RPC connection and proof format	Regular connection testing
High gas costs	Optimize blob size and frequency	Monitor and adjust gas settings
Connection issues	Verify network configuration and firewall settings	Regular network monitoring

Additional Resources

• Rollkit Documentation
• OP Stack Integration
• Data Availability Proofs
• Fee Abstraction