Modular Blockchains Gain Ground as Celestia Processes Record Data Availability
The modular blockchain thesis is no longer theoretical. Celestia, the first dedicated data availability layer, is processing record volumes of data as an expanding roster of rollups and application-specific chains build on top of its infrastructure. The shift from monolithic to modular blockchain design is reshaping how developers think about scaling, security, and sovereignty.
What Makes a Blockchain Modular
Traditional blockchains like Ethereum handle four core functions within a single system: execution, settlement, consensus, and data availability. Modular architecture separates these functions into specialized layers, allowing each to be optimized independently.
Celestia focuses exclusively on data availability, the task of ensuring that transaction data is published and accessible so that anyone can verify the state of the network. By stripping away execution and settlement, Celestia can offer massive data throughput at a fraction of the cost of posting data to Ethereum.
This specialization has made Celestia the preferred data availability layer for a growing number of rollup deployments. Chains that might have posted data to Ethereum's calldata or blob space are instead publishing to Celestia, reducing their operating costs by 90 percent or more in many cases.
Growth by the Numbers
Celestia's daily data throughput has quadrupled since its mainnet launch, now consistently processing over 50 megabytes of blob data per day across hundreds of namespaces. The network's blob fee market has remained remarkably stable, with costs staying below $0.01 per kilobyte even as usage has surged.
More than 30 rollups now use Celestia for data availability, spanning DeFi, gaming, social, and enterprise use cases. Notable adopters include Manta Pacific, which migrated from Ethereum blob space to Celestia to reduce costs for its privacy-focused DeFi applications, and several Arbitrum Orbit chains that have chosen Celestia over Ethereum for their data availability needs.
The TIA token, which is used to pay for blob space and secure the network through staking, has seen its staking participation rate climb above 60 percent, indicating strong long-term conviction among holders.
The Rollup-as-a-Service Explosion
Modular architecture has given rise to a new category of infrastructure providers: rollup-as-a-service (RaaS) platforms. Companies like Caldera, Conduit, and AltLayer allow developers to deploy custom rollups in minutes, selecting their preferred execution environment, data availability layer, and settlement chain from a menu of options.
Celestia is the most popular data availability option on these platforms, chosen by approximately 65 percent of new rollup deployments. The remaining deployments split between Ethereum blob space and newer competitors like EigenDA and Avail.
"We are seeing teams that would have built smart contracts on existing chains instead launching their own rollups," said a Caldera co-founder. "The cost and complexity have dropped to the point where it makes sense for any application expecting moderate throughput."
Competition Intensifies
Celestia is not the only project pursuing the data availability opportunity. EigenDA, built on the EigenLayer restaking protocol, offers data availability secured by restaked ETH rather than an independent validator set. This approach appeals to projects that want to remain within the Ethereum security umbrella while still benefiting from specialized data availability infrastructure.
Avail, originally incubated within Polygon, launched its mainnet in late 2025 and has been aggressively courting rollup developers with competitive pricing and strong developer tooling. The project's integration with the Polygon ecosystem gives it a natural distribution channel among existing Polygon-based projects.
Near Protocol has also entered the data availability market with Near DA, leveraging its existing sharded architecture to offer low-cost data availability with fast finality.
The Ethereum Relationship
The rise of external data availability layers has sparked debate within the Ethereum community about the long-term implications for ETH's value accrual. If rollups post their data to Celestia rather than Ethereum, the fee revenue that would have accrued to ETH validators instead flows to TIA stakers.
Ethereum proponents argue that the highest-value rollups will continue to use Ethereum for data availability because it offers the strongest security guarantees. They point to the upcoming pectra upgrade, which will increase blob capacity and reduce costs, potentially recapturing some of the market share lost to alternatives.
Modular advocates counter that the market will naturally stratify, with high-security applications using Ethereum and cost-sensitive applications choosing specialized layers. They argue this is a healthy evolution that expands the total addressable market for blockchain applications.
What Comes Next
The modular blockchain landscape is still in its early stages. Upcoming developments include Celestia's planned throughput upgrades, which aim to increase blob capacity by an order of magnitude, and the introduction of data availability sampling on Ethereum through the PeerDAS specification.
For developers and investors, the modular thesis offers a clear framework for evaluating new projects: rather than asking whether a chain is "better" than Ethereum, the relevant question is which layer of the modular stack it serves and whether it offers meaningful improvements in cost, performance, or developer experience. The chains that answer that question convincingly will likely capture significant value in the years ahead.
