TIA Description
Overview
Celestia (TIA) is a standalone Layer-1 blockchain built for data availability, letting other blockchains and rollups publish and verify data without running a full validator set of their own.
It uses a Cosmos SDK / CometBFT-based proof-of-stake architecture rather than being a token deployed on Ethereum, Solana, or another host chain. Mainnet launched October 31, 2023. The project was founded in 2019 as "LazyLedger" and rebranded to Celestia in 2021.
Value Proposition
Celestia's modular architecture separates data availability from execution and settlement, letting rollups launch without operating their own validator set or full-node data storage.
TIA captures this by pricing data-availability blob space in the native asset and securing the network through staking. The January 2026 "Matcha" upgrade enabled 128MB blocks while cutting node storage needs by roughly 77%, part of a stated roadmap to gigabyte-scale blocks by 2030. The July 2026 acquisition of Sovereign Labs, whose combined teams have shipped 25+ production blockchains, extends Celestia Labs into full-stack blockchain development.
Token Basics
TIA is a hybrid utility and governance token: it pays for data-availability blob space and secures the network through proof-of-stake staking.
Holders can stake TIA directly or delegate it to one of up to 100 active validators to earn staking rewards, while validators and token holders vote on parameter changes and protocol proposals through Celestia's Cosmos-SDK governance module.
Tokenomics
- Circulating supply: ~919.93M TIA (as of 2026-09-01); no maximum supply.
- Genesis supply: 1,000,000,000 TIA at mainnet launch.
- Allocation: Public 20.00%, R&D & Ecosystem 26.79%, Series A&B backers 19.67%, Seed backers 15.90%, Initial Core Contributors 17.64%.
- Vesting: Public fully unlocked at launch; R&D 25% unlocked then vesting years 1-4; Core Contributors 33.33% at year 1, remainder through year 3.
- Emission: inflationary, disinflationary trend — issuance started at 8%/year, declines toward a 1.5%/year floor, cut a further ~33% by the May 2025 Lotus upgrade.
Launch & Funding
TIA launched without a public ICO/IDO, combining venture funding rounds with a genesis airdrop.
- Seed: $1.5M raised in March 2021, when the project was still named "LazyLedger."
- Series A/B: $55M raised, announced October 2022, led by Bain Capital Crypto and Polychain Capital, four times oversubscribed, valuing the company near $1 billion.
- Foundation raise: $100M announced September 2024, led by Bain Capital Crypto.
- Token launch: mainnet and genesis went live October 31, 2023 — four years after the project's 2019 founding — with a 1,000,000,000 TIA genesis supply, 20% of which (Public Allocation) was distributed via airdrop.
Blockchain & Consensus
Celestia runs as its own Layer-1 blockchain rather than as a token on another chain, built on the Cosmos SDK with CometBFT (Tendermint-derived) Byzantine fault-tolerant consensus.
Validators secure the network through delegated proof-of-stake, with an active validator set capped at 100 and a 21-day unbonding period for withdrawn stake.
Team
Celestia was founded in 2019 (originally as "LazyLedger") by Mustafa Al-Bassam, Ismail Khoffi, and John Adler, with Nick White commonly credited as an early co-founder.
Al-Bassam serves as CEO of Celestia Labs and previously co-founded Chainspace; Khoffi previously worked as a core developer at Tendermint and the Interchain Foundation. Adler, an early Optimistic Rollup researcher, remains an active voice on protocol direction. Nick White serves as Chief Operating Officer. Following the July 2026 Sovereign Labs acquisition, Sovereign co-founder Preston Evans joined Celestia Labs as Chief Technology Officer.
Issuing Organization
Celestia is maintained by two distinct entities: the nonprofit Celestia Foundation, based in Liechtenstein and established February 21, 2022, and Celestia Labs, the core engineering team building the protocol.
Celestia Labs is legally Celestial Labs Ltd, a UK company incorporated January 7, 2020.
The Foundation led the $100 million raise announced in September 2024, while Celestia Labs handles day-to-day development — a nonprofit-foundation-plus-development-company structure similar to the Ethereum Foundation and its client teams.
Governance
Celestia uses on-chain, Cosmos-SDK-style governance in which TIA holders and validators vote on proposals that adjust network parameters.
Governance Proposal #5 raised the mainnet block size to 8MB, and CIP-30 removed mandatory auto-claiming of staking rewards, giving stakers control over when rewards are realized. A proposal to lower staking rewards from roughly 8% to 5% was reportedly approved but not yet implemented. Co-founder John Adler's June 2025 proposal to replace proof-of-stake with a "Proof of Governance" model, aimed at cutting issuance roughly 20x, remains an unresolved open governance question.
Roadmap
Celestia's most recent upgrades expanded cross-chain transfers and block capacity, and its latest acquisition extends the roadmap into full-stack chain development.
- May 19, 2025 — "Lotus" upgrade: added native cross-chain TIA transfers to 100+ chains via Hyperlane and shipped CIP-30.
- January 2026 — "Matcha" upgrade: enabled 128MB blocks through improved data propagation, cutting node storage requirements by roughly 77%, part of a stated path to gigabyte-scale blocks by 2030.
- July 15, 2026: Celestia Labs acquired Sovereign Labs, adding six team members including co-founder Preston Evans (promoted to CTO) and positioning Celestia Labs as a full-stack custom-blockchain development partner.
Security
Celestia has been audited multiple times by Informal Systems and OtterSec, covering different protocol components since 2023, with reports published publicly at docs.celestia.org.
Informal Systems audited light-client verification (TendermintX, January 2023), BlobstreamX, multiple celestia-app releases, and CIP-31 (Q2 2025). OtterSec's December 2023 review of the OP Stack integration found one medium-risk vulnerability — a missing RPC connection timeout — and also covered Nitro integration, Blobstream SP1, and Shwap. A structural risk flagged by reporters: roughly 23 validators hold approximately 50% of delegated (staked) TIA, a staking-concentration trend distinct from wallet-holder concentration.
Frequently Asked Questions
What is Celestia (TIA)?
Celestia is a standalone Layer-1 blockchain purpose-built for data availability, allowing other blockchains and rollups to publish and verify data without running a full validator set of their own. It launched its mainnet on October 31, 2023, and its native asset, TIA, pays for data-availability space and secures the network through staking.
Is Celestia built on Ethereum or another blockchain?
No. Celestia is its own Layer-1 blockchain built on the Cosmos SDK with CometBFT consensus, not a token deployed on Ethereum, Solana, or any other host chain. TIA is the chain's native gas and staking asset, comparable to how ETH functions on Ethereum or ATOM functions on Cosmos Hub.
What is TIA used for?
TIA is used to pay for data-availability blob space, to stake and secure the network under proof-of-stake, and to vote on on-chain governance proposals. Holders can stake directly or delegate to one of up to 100 active validators to earn staking rewards through Celestia's Cosmos-SDK governance and staking modules.
Does TIA have a maximum supply?
No, TIA has no maximum supply; it uses a perpetual, Cosmos-style inflation schedule. Circulating supply was approximately 919.93 million TIA as of 2026-09-01, up from a 1,000,000,000 TIA genesis supply. Annual issuance started at 8% and declines toward a 1.5% floor, with the May 2025 Lotus upgrade cutting issuance a further roughly 33%.
Who founded Celestia?
Celestia was founded in 2019, originally under the name "LazyLedger," by Mustafa Al-Bassam, Ismail Khoffi, and John Adler, with Nick White commonly credited as an early co-founder. Al-Bassam serves as CEO of Celestia Labs, Khoffi previously worked at Tendermint and the Interchain Foundation, and Adler remains an active voice on protocol direction.
What consensus mechanism secures Celestia?
Celestia uses CometBFT, a Tendermint-derived Byzantine fault-tolerant proof-of-stake consensus mechanism built on the Cosmos SDK. Validators are chosen through delegated staking, with an active set capped at 100 validators and a 21-day unbonding period for withdrawn stake, and on-chain governance handles parameter changes through the same Cosmos-SDK module.
Has Celestia's code been audited?
Yes. Informal Systems and OtterSec have audited Celestia's components multiple times since 2023, covering light-client verification, BlobstreamX, celestia-app releases, and integrations such as OP Stack, Nitro, and Shwap. OtterSec's December 2023 OP Stack review found one medium-risk RPC timeout issue. All audit reports are published publicly at docs.celestia.org.
Who maintains Celestia today?
Celestia is maintained by two entities: the nonprofit Celestia Foundation, based in Liechtenstein since February 2022, and Celestia Labs (legally Celestial Labs Ltd), a UK company incorporated in 2020 that builds the protocol. The Foundation led a $100 million raise in September 2024; Celestia Labs handles core engineering and development.
