Inter-Layer Communication

Laika sequencers play a critical role in bridging the gap between the high-performance Laika L2 and the Dogecoin L1 blockchain. Here's a deeper dive into their technical specifications:

1. Direct Network Interaction:

• Sequencers operate as network intermediaries, directly reading and writing data to both Laika and Dogecoin full nodes. This enables real-time data exchange and synchronization between the layers.

2. Verifiable Transactions through Data Inscription:

• To ensure a verifiable audit trail, sequencers target including data for at least 20 validated Laika blocks within a single Dogecoin transaction. This data can be packaged using techniques like:

  • Merkle Trees: These cryptographic data structures allow efficient verification of the integrity of the entire batched data. By including the Merkle root (a unique identifier for the entire dataset) in the Dogecoin transaction, validators can efficiently confirm that all 20 Laika blocks are present and unaltered.

  • Zero-Knowledge Proofs (ZKPs) (future implementation): As Laika matures, ZKPs can potentially be explored for even more efficient data verification on the Dogecoin blockchain. ZKPs allow sequencers to prove the validity of transactions without revealing all the underlying data, further reducing the data footprint on Dogecoin.

3. Balancing Efficiency and Scalability:

• While aiming for verifiability, sequencers prioritize network efficiency. They target including an average of only 1 Laika transaction per Dogecoin block. This significantly reduces the data volume written to the Dogecoin blockchain compared to processing each Laika transaction individually.

4. Mitigating Dogecoin Load:

• This approach is estimated to translate to roughly 1440 Laika-based transactions being processed on the Dogecoin blockchain daily. This represents a minor fraction (0.25% - 0.5%) of Dogecoin's current daily transaction volume. Effectively, Laika offloads over 80% of transaction processing to its faster L2 network, reducing congestion on Dogecoin.

5. Sequencer Requirements:

• To interact effectively with both networks, sequencers require:

  • Full Dogecoin Nodes: These nodes allow sequencers to monitor the Dogecoin blockchain, submit transactions, and verify network state.

  • Dogecoin Reserves: Sequencers need a reserve of Dogecoin to cover transaction fees associated with data inscription on the Dogecoin blockchain.

6. Future Considerations: Data Packaging Techniques

• Laika will explore and document additional data packaging techniques beyond Merkle Trees. This may include ZKPs for enhanced efficiency and potential future cryptographic advancements for improved security and scalability.

In conclusion, Laika sequencers leverage a combination of data packaging, efficient transaction bundling, and direct network interaction to bridge the gap between Laika and Dogecoin. This approach ensures verifiable transactions while minimizing the burden on the Dogecoin blockchain, enabling Laika to achieve its high throughput and scalability goals.