Modular Blockchains and the Data Availability Revolution

Monolithic vs. Modular Architecture

Traditional blockchains (e.g., Bitcoin, early Ethereum) bundle all core functionalities into a single layer, creating several key bottlenecks:

• Transaction congestion and high gas fees
• Difficulty in flexible system scaling

Modular architecture, on the other hand, separates the layers into:

• Execution Layer: Handles smart contract logic and transaction processing (e.g., Rollups)
• Consensus Layer: Provides network security and validation (e.g., Ethereum Mainnet)
• Data Availability Layer: Stores and distributes transaction data (e.g., Celestia)

This design allows developers to freely combine tech stacks, for example, “Execution Layer + Celestia DA + Ethereum Security Layer,” achieving a more elastic and efficient blockchain system.

Why Modularization Reduces Costs

Monolithic blockchains execute, validate, and store all transactions on every node, resulting in redundant resource consumption.

Modular designs address these issues by:

• Layered functionality, reducing redundant computation
• Outsourcing DA, saving mainchain gas costs
• Freedom to choose service providers: For instance, using Celestia or Gate Layer’s DA services can be over 80% cheaper than Ethereum calldata costs.

Data Availability (DA) and Layer 2 Bottlenecks

DA plays a critical role in ensuring the integrity and verifiability of transaction data. For Rollups, transaction data must be submitted to the mainchain to ensure security, but this DA cost can account for 60-80% of overall expenses. Thus, dedicated DA layers (like Celestia, EigenDA, Gate Layer) have emerged, achieving the same level of security at a lower cost.

Modular Ecosystem and Gate Layer’s Role

The modular ecosystem is evolving into a multi-layer, multi-provider landscape:

• Celestia / Avail: General-purpose DA layer
• EigenLayer / EigenDA: DA solutions based on Ethereum’s restaking mechanism
• Gate Layer: Launched by the Gate ecosystem, combining exchange-level security with modular architecture, providing a high-speed Rollup building environment and DA services, supporting multi-chain interoperability and cross-chain asset transfers.

Gate Layer aims to serve as the bridge between transaction execution and secure data storage, providing low-cost, high-speed infrastructure for developers building modern dApps.