Laika's Sequencers: Orchestrating Efficiency on a Hybrid Network

Laika's hybrid architecture introduces a unique role - the sequencer. Unlike traditional validators on other blockchains, Laika's sequencers handle specific tasks due to the network's reliance on Dogecoin as the underlying L1:

1. Ordering and Reporting Blocks:

• Sequencers act as traffic controllers, ordering validated transaction blocks from Laika and reporting them to the Dogecoin blockchain.

2. Dedicated Nodes for Stability:

• To ensure smooth operation, sequencers run both dedicated Dogecoin full nodes and Laika full nodes. This allows them to interact effectively with both networks.

3. Batching Transactions for Efficiency:

• Due to Laika's faster block times (3 seconds) compared to Dogecoin (1 minute average), sequencers bundle information from 20 Laika blocks into a single batch.

4. Reporting and Verification with Inscriptions:

• Sequencers leverage Dogecoin's Ordinals protocol to inscribe this batched transaction data onto the Dogecoin blockchain. Inscriptions allow data to be permanently stored on individual Satoshis (the smallest unit of Dogecoin) within a Dogecoin block.

• The sequencer generates a Merkle tree, a cryptographic data structure that efficiently verifies the integrity of the batched data. The Merkle root (a unique identifier for the entire data set) is then inscribed onto the Dogecoin blockchain.

• Additionally, the sequencer might include supplementary information within the inscription, such as the originating block heights on both Laika and Dogecoin for enhanced traceability.

5. Verification by Validators:

• Validators on Laika retrieve the inscription data from the Dogecoin blockchain and verify its authenticity using the included Merkle root. They can then verify the individual transactions within the batch by referencing the original Laika blocks.

6. Security and Scalability through Collaboration:

• This division of labor between sequencers and validators optimizes both security and scalability. Sequencers handle efficient data transfer, while validators ensure the integrity of transactions.

7. Trusted Party Management (Initially):

• Given the critical nature of sequencers and the technical complexities involved in maintaining them, Laika will initially restrict sequencer operation to trusted parties. These parties can be chosen through on-chain voting and other governance mechanisms in the future.

In summary, Laika's sequencers play a crucial role in bridging the gap between the high-speed Laika network and the Dogecoin blockchain. Their ability to efficiently bundle and report transactions using Dogecoin's Ordinals protocol as inscriptions ensures that Laika can achieve faster transaction times and scalability without compromising security.