Celestia (TIA): the data availability network for rollups, its token and its risks

Celestia is a crypto network with one narrow job: keeping data available so that other blockchains can be checked. Rollups and app chains publish their transaction data on it, and its token, TIA, pays for that space and secures the chain through staking. Mainnet Beta went live on 31 October 2023, four years after the research paper that started the project.

The engineering keeps shipping. Blocks have arrived about every three seconds since July 2026. The Matcha upgrade of November 2025 lifted the maximum block size sixteenfold, from 8 MB to 128 MB, and a side protocol called Fibre reached 3.07 terabits per second in a benchmark published on 1 October 2026. The business has not followed: according to DefiLlama, the whole network collected $2,712 in fees in the 30 days to 17 October 2026.

What is Celestia crypto? A data availability layer for rollups

A blockchain does three jobs that can be pulled apart. It runs transactions, it puts them in order, and it keeps the raw data public so anyone can verify the result. Celestia keeps the last two and drops the first: it does not run smart contracts for apps.

Its customers are mostly rollups, which our glossary explains in more detail. A rollup bundles transactions, executes them away from the base layer and posts the data somewhere public, so that anyone can rebuild its state and challenge a wrong result. On Ethereum, that public place is Ethereum. Celestia sells a separate one. The industry calls this split “modular” design.

Under the hood, Celestia is a Cosmos SDK chain running CometBFT consensus, with delegation built into the protocol and an initial set of 100 validators. The Celenium explorer showed 96 of them active on 17 October 2026.

How Celestia data availability sampling works

The hard question for any data layer sounds simple. How does a node know a block’s data was really published without downloading the whole block? Celestia’s answer is data availability sampling, set out in its documentation on data availability.

Each block is cut into small pieces called shares and laid out as a k-by-k square. Reed-Solomon coding, the error-correction family used on CDs and QR codes, extends it to 2k by 2k with parity data. Every row and column gets a Merkle root, and a root of those roots goes into the block header.

A light node downloads headers only. It asks the network for a few shares at random coordinates, each sent with a Merkle proof, and if every sample checks out it can be highly confident the full block is out there. The extension is what makes this work: to hide even a small part of the data, a block producer would have to withhold a large part of the square, which random samples are likely to hit.

More light nodes sampling means the network can carry bigger blocks, because each node’s download grows far more slowly than the block. The docs also say Celestia does not need an honest majority of block producers for data availability. If samplers together hold enough unique shares, honest nodes can rebuild the block, and a badly encoded one can be exposed with a fraud proof covering a single row or column.

Namespaces: each rollup reads only its own data

Data is also sorted by application. Each blob carries a namespace ID, and the Merkle trees record which namespaces sit below each node. A rollup downloads only its own namespace and can prove it got all of it, or that something is missing.

Apps publish through a pay-for-blob transaction and pay the fee in TIA: the latest ones on Celenium’s front page on 17 October 2026 paid between about 0.0002 and 0.0016 TIA. The largest namespace listed there, labelled relay-data, held about 99.7 GiB.

Celestia TIA: staking, blob fees and gas

Celestia’s own TIA page gives the token three jobs. Rollups pay in TIA to publish data. Holders stake it with validators and receive newly issued tokens in return; our glossary entry on staking covers the basics. Developers can also adopt TIA as the gas token of their own rollup.

TIA is native to Celestia, not an ERC-20 contract on Ethereum. Any holder, staked or not, can propose and vote on governance proposals that change a set of chain parameters, and 2% of block rewards has gone to a community pool since genesis.

Two staking rules changed recently. Matcha cut the unbonding period from 21 days to about 14 in November 2025. The v8 upgrade of 5 May 2026 set validator commission between 20% and 60%, and Celestia said in February that validators below 20% would be moved up automatically.

From LazyLedger to Mainnet Beta

Mustafa Al-Bassam posted the LazyLedger paper on arXiv on 22 May 2019: a ledger that only orders and publishes data, leaving execution to applications. On 3 March 2021, The Block reported a $1.5 million seed round for LazyLedger, with the Interchain Foundation, Binance Labs, Maven 11 and KR1 among the backers. The project later took the name Celestia.

In October 2022 Celestia Labs announced $55 million from Series A and B rounds led by Bain Capital Crypto and Polychain. Mainnet Beta followed on 31 October 2023 with a genesis supply of one billion TIA, of which 60 million, about 6%, went to an airdrop for Ethereum rollup users, Cosmos Hub and Osmosis stakers and developers, based on a 1 January 2023 snapshot.

The token set its all-time high in February 2024. That September the Celestia Foundation raised $100 million in a round led by Bain Capital Crypto, which The Block said brought the total raised to $155 million. The first big unlock of investor and contributor tokens came at the end of October 2024; Cointelegraph, citing the tracker DropsTab, had estimated it at about 175.75 million TIA.

Network upgrades: from Lemongrass to three-second blocks

Changes are written as numbered Celestia Improvement Proposals (CIPs) and bundled into upgrades. Since v3, validators signal readiness inside the protocol; on mainnet an upgrade activates one week after five-sixths of voting power has signalled. The official table gives these Mainnet Beta dates:

A one-block patch, v5, followed Lotus on 1 August 2025. Hibiscus is the instructive entry: it went live on Mocha on 23 February 2026, the bug surfaced there, and its useful parts reached mainnet as v8 in May.

Blobstream, the bridge that lets Ethereum contracts check Celestia data roots, was rebuilt too. Its first version was retired in April 2024; the production versions are Blobstream X and SP1 Blobstream, both audited by outside firms.

Fibre: a faster blob lane, still off mainnet

Fibre, announced on 13 January 2026, is a second data protocol run by the same validators next to the base chain. A client encodes its blob, sends each validator its own pieces and waits until validators holding two-thirds of the voting power have signed. In Celestia’s words, the base chain then “only records a commitment to that data and the validators’ signatures.”

The 1 October 2026 benchmark averaged 3.07 Tb/s over 143 seconds on 120 validators. It ran on an experimental performance branch with 2 GiB blobs and one-second blocks. Mainnet will start with blobs of up to 128 MiB, and no mainnet date has been given.

Celestia in 2026: markets, Sovereign Labs and Eden

On 14 January 2026 Al-Bassam published “Vision 2.0”, which moves the pitch from launching more chains to putting markets onchain, starting with custom trading venues. It also says upgrades need offchain agreement. “Social consensus is the final layer,” he wrote.

Six months later, on 15 July, Celestia Labs bought Sovereign Labs, maker of the Sovereign SDK framework for app-specific chains, for an undisclosed price. Sovereign co-founder Preston Evans became Celestia Labs’ CTO. The announcement named Relay, a bridge, and Bullet, a perpetual futures exchange, as apps built on that stack.

Eden is the latest addition. ChainCatcher reported on 16 October 2026 that Celestia described it as an EVM chain with TIA as gas, an experimental sandbox for “agentic commerce”, meaning AI agents that pay for services onchain. Its first experiment, Botfun, was in closed testing. TIA rallied the same week, as covered in our report on the Eden launch and Celestia’s small fee income.

Celestia tokenomics: supply, inflation and unlocks

The Celestia docs on staking, governance and supply split the genesis billion like this:

No supply cap, and issuance cut twice

There is no maximum supply. Issuance started at 8% a year and was due to fall 10% a year toward a 1.5% floor. Lotus cut it by a third in July 2025, to about 5%, with a gentler yearly decline of 6.7%. Matcha halved it to about 2.5% in November 2025, and the docs say it will keep falling 6.7% a year until it reaches 1.5%.

CIP-41, the proposal behind the Matcha cut, argued that high staking yields made TIA hard to use as collateral in lending and DeFi. Its model put total staking yield at 55% of supply bonded at 9.09% before the cut and 4.55% after; that is a model, not a live rate. No fees are burned.

On 17 October 2026 CoinGecko listed about 982.1 million TIA in circulation and a total supply of about 1.18 billion, the excess over one billion coming from staking issuance.

Unlock dates fall on 30 October

Because 2024 was a leap year, the docs put every yearly unlock on 30 October. Read against that schedule, investors finished vesting on 30 October 2025, core contributors finish on 30 October 2026 and the R&D and ecosystem allocation runs to 30 October 2027. We found no primary source for the size of the 2026 release. Our token unlock explainer shows how such events usually play out.

Staking rewards on locked tokens used to count as circulating the moment they arrived. Lotus changed that: rewards on locked accounts now follow the same schedule as the stake that earned them.

Celestia fees: about $2,700 a month

DefiLlama’s Celestia fees page, read on 17 October 2026, showed $158 for the previous 24 hours, $2,712 for 30 days and $35,936 for a year. All-time fees stood at $3.29 million. The single busiest day, 19 December 2023, brought in about $1.61 million.

Summing DefiLlama’s daily series by calendar year gives about $1.88 million for 2023, $1.12 million for 2024, $272,000 for 2025 and $19,600 for 2026 up to 16 October. Blobs are still posted every day. They have simply become very cheap.

Set that against issuance. By our arithmetic, about 2.5% a year on a supply above one billion means stakers receive tens of millions of TIA a year. Fees under $40,000 a year do not come close to offsetting that at any price TIA has traded at.

A forum package titled “Celestia Sustainable Blob Economy Governance Package”, first posted on 17 July 2026 and revised on 22 September, tries to change the picture. It would sell paid reservations for inclusion priority, models fee burns of 0%, 25% and 50% only as scenarios, keeps adaptive issuance switched off pending a separate CIP and sets a $1.5 million planning ceiling for community-pool spending in three phases. It was posted by a pseudonymous account, not by the Foundation, and on 17 October 2026 the thread showed no vote.

Funding, treasury and the Polychain stake

The 2022 rounds drew Placeholder, Galaxy Digital, Delphi Digital, Jump Crypto and FTX Ventures alongside the two leads. In June 2025, with TIA at an all-time low, Al-Bassam wrote on X: “We have a $100 million war chest and a six-year runway, so we’re ready to play the long game,” as quoted by The Block. The figure is self-reported.

On 24 July 2025 The Block reported that the Foundation had bought all of Polychain’s remaining TIA for $62.5 million, about $1.44 a token, after criticism that the fund had sold staking rewards earned on its locked tokens. It was not a burn. The tokens were to be reassigned to new investors on a rolling unlock between 16 August and 14 November 2025.

Celestia team and governance

Two bodies run the project: the Celestia Foundation and Celestia Labs, the main development company. The about page lists Mustafa Al-Bassam as chairman and CEO of the Foundation, Nick White as co-founder and CEO of Celestia Labs, Preston Evans as CTO of Celestia Labs and Rootul Patel as head of protocol. John Adler, described by The Block as a co-founder, is not on the current page.

The CIP repository on GitHub held 52 proposals on 17 October 2026. Token holders vote onchain on parameters; upgrades themselves are agreed offchain among developers and validators, as Vision 2.0 spells out.

Audits of Celestia code

The docs list 12 audits. Informal Systems reviewed celestia-app for the Lemongrass release, authored blobs and a high-throughput recovery mechanism. OtterSec covered the OP Stack and Arbitrum Nitro integrations, the Shwap protocol of celestia-node and SP1 Blobstream. Blobstream X went through Informal Systems, OtterSec, Veridise and Zellic. The celestia-app repository also holds a Binary Builders review of a 2023 release candidate and a Sherlock report on the zero-knowledge interchain security module, added in March 2026.

We could not count or grade the findings in these reports. The Hibiscus bug was caught on a testnet, not by an audit.

Celestia vs EigenDA and Ethereum blobs

Ethereum added blob space for rollups in March 2024, then switched on its own sampling scheme, PeerDAS, with the Fusaka upgrade on 3 December 2025, according to the Ethereum Foundation’s Fusaka announcement. Two later forks raised the blob target from 6 to 14 per block by January 2026. Rollups that settle on Ethereum can now get sampled data availability without leaving it.

EigenDA, part of the EigenLayer restaking ecosystem, takes another route: operators sign that they hold the data, rather than light nodes sampling it. Avail runs a competing data availability network. Market-share figures for these services circulate, but none we found came from a neutral count, and Celestia’s claim of “20+ chains” on its home page is its own.

Main risks for TIA holders

Dilution comes first. The token keeps issuing while fees stay tiny, so unless the blob economy package or the push into markets creates real demand for blobspace, stakers are paid mostly in new supply. On CoinGecko at 19:36 UTC on 17 October 2026, TIA sat about 97% below its all-time high of $20.85.

Insider supply is the other overhang. The R&D and ecosystem pool vests until October 2027, and The Block reported in June 2025 unverified allegations that insiders sold after the first unlock, which Al-Bassam dismissed as “FUD”.

Usage is concentrated in a few namespaces, and rollups inherit Celestia’s outages. L2BEAT’s Eclipse page says the Ethereum L2 has no automatic fallback for data availability and that funds can be frozen if Celestia becomes unavailable.

Much of the new story is still on paper. Fibre has no mainnet date, Eden is days old, and the market strategy depends on outside firms choosing to build on Celestia. This is a checklist, not investment advice.

Next Celestia dates: the 30 October unlock and v10

The next fixed date is 30 October 2026, the end of the core contributors’ schedule. After that, watch for a Mainnet Beta date for v10 and Fibre, any CIP or vote drawn from the blob economy package, and Eden’s first figures outside closed testing.