What is Celestia?

Celestia is a modular blockchain that operates as a data availability (DA) layer. It orders transactions and guarantees that their data is published. Execution is handled separately by the rollups and appchains using the network. A rollup executes transactions elsewhere before posting the data to a base layer for verification.

The design originated with the LazyLedger whitepaper, written by co-founder Mustafa Al-Bassam. Celestia launched on mainnet in October 2023 as the first chain built around data availability sampling (DAS). Through DAS, a light node can confirm that block data was published by downloading only small random samples. Verification therefore remains inexpensive as block sizes increase.

Sampling also provides the network's scaling mechanism. As more nodes participate, Celestia can safely support larger blocks without increasing the hardware demands placed on any single machine.

How Does Celestia Work?

A traditional blockchain performs several functions within one system. Celestia separates them. Its validators establish consensus over transaction ordering and data publication, while the chains using Celestia handle the remaining work.

The architecture rests on a few core mechanisms:

• Data availability sampling (DAS): Light nodes download small random portions of erasure-coded block data. A handful of successful samples provides near certainty that the full block was published.
• Two-dimensional Reed-Solomon erasure coding: Redundant pieces are added to block data, allowing the full block to be reconstructed from half of the encoded data. This makes random sampling a reliable test.
• Namespaced Merkle Trees (NMTs): Namespace identifiers separate the data, allowing each rollup to retrieve and verify only the information relevant to its application.
• Proof-of-stake consensus: A CometBFT-based validator set orders transactions and produces blocks without executing them. Since the v9 upgrade, blocks have arrived every 3 seconds, down from the previous 6 second interval.

Validators do not execute the transactions contained within blobs. New applications therefore compete for raw data capacity rather than increasing execution demand in the way smart contracts do on a monolithic chain.

What is Data Availability?

Data availability assures users that all data underlying a block has been published and can be retrieved. Independent parties can then verify the chain's state or challenge invalid transactions. If that data were withheld, a rollup operator could prevent others from proving fraud.

Monolithic chains address this problem by requiring full nodes to download every block. The process becomes more expensive as data volumes rise. Sampling replaces full downloads with statistical verification, making it possible for a phone-grade light node to contribute to network security.

Ethereum created dedicated DA capacity through EIP-4844. Its temporary blob storage is discarded by nodes after roughly 18 days. Celestia light nodes sample data within a rolling 30 day availability window, while archival storage nodes keep it retrievable beyond that period.

Celestia Statistics & Trends

Celestia's capacity has expanded much faster than paid demand. The network's main figures reflect both sides of that divide.

• Price and market cap: According to CoinGecko, TIA trades near $0.33 as of August 2026 and has a market cap of around $300 million. Its price is roughly 98% below the February 2024 all-time high of $20.85.
• Supply and inflation: About 960 million TIA is circulating from a total supply of roughly 1.17 billion. Two governance cuts have reduced inflation to around 2.5%. It declines by 6.7% each year until reaching a long-term floor of 1.5%.
• Throughput: Matcha increased the maximum block size from 8MB to 128MB, providing about 2TB of blockspace per day. The v9 upgrade also cut block times in half to 3 seconds.
• Usage: Celestia reported a 133% increase in data posted to the network during the first half of the year. However, the Eclipse rollup generates the large majority of daily blob volume.
• Fees: CoinGecko recorded daily network fees of around $50 at the time of writing, leaving blob fee revenue tiny relative to TIA's valuation. Low fees are an intentional feature of the product, but this means the token's value depends heavily on future demand.
• Funding: The Celestia Foundation has raised approximately $155 million, including a $100 million round led by Bain Capital Crypto. It also spent $62.5 million buying back Polychain Capital's entire remaining TIA stake.

What are Blobs in Celestia?

Blobs are data packages published by rollups through a transaction type called PayForBlobs. Each submission contains the raw data, tagged with its namespace, alongside a fee payment and cryptographic commitment to the contents.

After inclusion, blobs undergo erasure coding and are committed to the block header through Merkleization. This creates a single data root against which light nodes can sample. The v6 Matcha upgrade increased the maximum individual blob transaction size from 2MB to 8MB.

Cost and available capacity distinguish Celestia from Ethereum in practice. Eclipse published a comparison in which posting about 115GB of data cost approximately $12,000 on Celestia, compared with roughly $500,000 in equivalent Ethereum blob fees. Celestia's highest-volume chains would also exceed Ethereum's available blob capacity.

Celestia TIA Tokenomics

TIA pays for blobspace and secures Celestia through staking. It also gives holders voting power in network governance. The token launched with a genesis supply of 1 billion and annual inflation of 8%.

TIA allocation at genesis:

• Public Allocation (20.00%): Distributed through the Genesis Drop airdrop and incentivized testnet rewards, with reserves set aside for future community initiatives.
• R&D & Ecosystem (26.79%): Held by the Celestia Foundation and core developers to support research, protocol development, and grants.
• Early Backers Series A&B (19.67%): Allocated to institutional investors that participated in the Series A and B rounds.
• Early Backers Seed (15.90%): Assigned to seed investors who funded the project before launch.
• Initial Core Contributors (17.64%): Awarded to the Celestia Labs team responsible for creating the network.

Celestia has revised its monetary policy since launch. In July 2025, the Lotus upgrade reduced inflation by one-third to around 5%. It also locked staking rewards earned on vesting allocations and ended automatic reward claiming. Matcha followed in November 2025, halving inflation to approximately 2.5% and increasing the minimum validator commission to 10%.

Our Take: The changes directly addressed selling pressure from early backers. On-chain analysts estimated that Polychain Capital had sold more than $240 million of TIA, much of it from staking rewards earned on locked tokens. The Foundation later bought Polychain's remaining stake for $62.5 million and redistributed it to new investors under fresh lockups. That reduced the token's structural overhang, but demand for blobspace must still provide the underlying economic support.

Celestia Roadmap: Fibre, Lazybridging & 1GB Blocks

Celestia shipped four mainnet upgrades within a year. Its stated goal has since expanded beyond serving rollups to supporting what the team calls everything markets. These include order books, auctions, and machine-to-machine payments that require abundant blockspace.

• Matcha (v6): Increased maximum block sizes to 128MB through a new propagation mechanism and halved inflation. It also removed the token filter, allowing any asset to be bridged to Celestia through Hyperlane or IBC, the Cosmos interoperability standard.
• v8: Added single-signature cross-chain transfers and ZK-verified messaging. These were the first components of lazybridging, Celestia's proposed system for moving assets between its rollups and external chains without conventional bridge contracts.
• v9: Reduced block times to 3 seconds and introduced the module groundwork needed for Fibre.
• Fibre: Unveiled in January, this parallel DA protocol sustained 1Tb/s of throughput across 498 test nodes using a new encoding scheme called ZODA. Fibre targets power users with blobs ranging from 256KB to 128MB, while the existing layer continues to serve smaller rollups. Celestia presents it as infrastructure for markets that write data with every trade or agent action, at a scale beyond order book chains such as Hyperliquid.

In July, Celestia Labs acquired Sovereign Labs, bringing the Sovereign SDK team into the company and appointing co-founder Preston Evans as CTO. The acquisition positions Labs as a full-stack development partner for companies building custom chains on Celestia. Its long-term roadmap continues to target 1GB blocks.

What Apps and Chains Use Celestia for DA?

Celestia has secured genuine adoption, although activity remains highly concentrated. Eclipse, a Solana-VM rollup that settles on Ethereum, is by far its largest consumer. The chain has generated more than 80% of daily blob volume through much of this year. Major rollup frameworks such as Arbitrum Orbit, OP Stack, and Polygon CDK all support Celestia as a DA option.

Other adopters include derivatives and gaming projects, as well as newer Sovereign SDK chains such as the Bullet perpetuals exchange. Some projects have left the ecosystem. Forma, a sovereign NFT chain built on Celestia, recently announced plans to wind down and migrate its collections to Ethereum.

For anyone evaluating the Layer 2 landscape, this concentration has two implications. Eclipse demonstrates that Celestia can support a high-throughput chain. It also means blob demand could fall sharply if that single customer departed.

Celestia vs Other Data Availability Layers

Ethereum is Celestia's largest competitor. The Fusaka upgrade, released in December 2025, introduced PeerDAS as Ethereum's version of data availability sampling. It also substantially increased blob capacity, narrowing the cost difference for rollups that prioritize Ethereum-native security. At high volumes, Celestia continues to provide considerably more capacity per chain at a lower cost.

EigenDA follows another model. Instead of operating a sovereign chain, it relies on operators secured by restaked ETH. The protocol advertises very high throughput and close alignment with Ethereum, but introduces trust assumptions around its operator committee that sampling-based systems avoid.

Avail is Celestia's closest architectural competitor. The project, which originated within Polygon, also operates a standalone DA chain with sampling and uses KZG validity proofs. Both networks compete for the same multichain rollup deployments. Celestia's advantages are its earlier integrations and established scaling record, having moved from 8MB to 128MB mainnet blocks while demonstrating 1Tb/s through Fibre testing.

Celestia Founders and Team

Dr. Mustafa Al-Bassam and Ismail Khoffi co-founded Celestia. Mustafa wrote the LazyLedger paper that became the basis for the network and previously co-founded Chainspace, whose team was acquired by Facebook. He now serves as CEO of the Liechtenstein-based Celestia Foundation. Ismail's previous roles include senior engineering positions at Tendermint and the Interchain Foundation.

Celestia Labs manages day-to-day protocol engineering under CEO Nick White. Preston Evans, a co-founder of Sovereign Labs, became CTO following the acquisition. Separately, the Foundation supports research and ecosystem grants while overseeing the Celestia Improvement Proposal process used to govern upgrades.

Final Thoughts

Celestia has largely proven its original technical thesis. Data availability sampling is working in production, while mainnet blocks have scaled 16x without higher node requirements. Fibre points to another substantial increase in capacity.

The unresolved issue is economic. Network fees remain negligible relative to TIA's valuation, most usage comes from one customer, and Ethereum's Fusaka upgrade has strengthened the default DA option for rollups. We think Fibre adoption and the rollout of lazybridging over the next year will indicate whether abundant blockspace generates corresponding demand or simply remains abundant.