Key Points
Modular blockchains such as Dymension and Celestia could solve the blockchain trilemma, which describes the trade-offs between security, scalability and decentralization.
Modular blockchains offer enhanced scalability. By specializing in distinct functions like execution, settlement, consensus, and data availability (delegating resource-intensive tasks to distinct layers), modular blockchains achieve higher throughput while preserving decentralization and security, and potentially lowering fees.
Modular blockchains have the potential to revolutionize the blockchain industry. While there are some challenges to overcome, the potential benefits are significant for investors.
What are modular blockchains?
The blockchain space has grown significantly since its inception with a constant effort from developers to maximize security, scalability and decentralization.
With the original monolithic approach, a single chain handles all tasks (execution, settlement, consensus and data availability). This leads to challenges in scalability, upgradability and hardware requirement for validator nodes.
The modular chain focuses on a specific function, dividing the blockchain's core function into smaller, distinct modules. This approach optimizes resource utilization and reduces network congestion by offloading other tasks to separate chains.
How they work
Modular blockchains often operate by specializing in four main functions: execution, settlement, consensus, and data availability. Execution involves processing transactions, settlement secures transaction destinations, consensus validates transaction authenticity, and data availability refers to the storage of transaction data. This modular design allows for greater flexibility and efficiency, offering a promising solution to the blockchain scalability trilemma.
Exploring modular networks
There are different ways to implement modular blockchains, each with unique characteristics. The main examples are rollups, validium, and sovereign rollups.
Rollups function as an execution layer, processing transactions and publishing data to a layer-1 network (L1).
Validium is a variation of rollups that processes transactions off-chain before submitting the data to the L1. It also relies on a network of Proof of Stake validators.
Sovereign rollups distinguish themselves by acting as both an execution and settlement layer, with data blocks published directly onto the rollup. Sovereign rollups don't require L1 smart contracts for validation.
Benefits and limits of modular blockchains
Modular blockchains offer key benefits over monolithic blockchains. However, building on modular blockchains can be more complex and it poses a steeper learning curve for both users and developers.
Benefits
Enhanced scalability Modular blockchains excel in scalability by delegating resource-intensive tasks to distinct layers, thereby enabling increased overall throughput while maintaining decentralization integrity.
Flexibility and interoperability Modular base layers are meticulously crafted to exhibit high flexibility, fostering interoperability among various layer-1 and layer-2 chains. This adaptability empowers developers to deploy the Ethereum Virtual Machine (EVM) or alternative virtual machines according to their preferences.
Versatile application development The modularity of blockchains facilitates the creation of universal applications, minimizing barriers for users within the blockchain ecosystem. This adaptability fosters the development of a wider array of secure and efficient decentralized applications (DApps).
Customizable tech stacks Developers are empowered to select the virtual machine that aligns with their requirements, offering a customizable tech stack. This fosters a more flexible and developer-centric environment.
Limits
Complexity in development Leveraging modular blockchains for development can present greater challenges compared to monolithic counterparts. The intricacy involved presents a significant learning curve for both users and developers, which could potentially hinder adoption and progress in development efforts.
Limited testing Modular networks lack the extensive battle-testing seen in their monolithic counterparts such as Ethereum or Bitcoin. The rigorous testing and validation experienced by established chains have not been fully replicated in the modular landscape, leading to concerns regarding their resilience in real-world, high-traffic scenarios.
Early-stage development Modular blockchain development is in its early stages, with the market showing enthusiasm. However, these networks lack the comprehensive real-world testing and validation that accompany maturity. This nascent phase may introduce uncertainties regarding the long-term stability and effectiveness of modular blockchains.
Examples of Modular Blockchains
Celestia In the realm of modular blockchains, Celestia stands out as a modular network facilitating secure scalability without sacrificing performance. Rollups and layer-2 networks can leverage Celestia to openly share transaction data while benefiting from rapid and efficient data availability. Celestia achieves this through the implementation of several features, including data availability sampling and sovereign rollups. Through data availability sampling, Celestia can expand its block size as its network attracts more nodes.
Dymension Dymension is a network of easily deployable and fast modular blockchains called RollApps. Dymension works in a similar way as a traditional full-stack web application. The RollApps network functions as the front-end (user interaction), while Dymension works as the back-end, coordinating the ecosystem. In addition to that, there are data availability networks that function as databases, providing data whenever necessary.
