Coin columns · Mainnet Province

Celestia (TIA): A Modular Chain That Publishes Rollups’ Data

Data availability only, no execution; mainnet since 2023

Celestia is a blockchain that does not run smart contracts itself. Instead it specialises in storing and publishing transaction data posted by other chains, mainly rollups, so that anyone can check it. TIA is the network’s native coin.

1. From LazyLedger to Celestia

Celestia began with ‘LazyLedger’, a 2019 paper by Mustafa Al-Bassam. He developed the project with Ismail Khoffi, John Adler and Nick White and renamed it Celestia in 2021. Celestia Labs leads development and the Celestia Foundation supports the ecosystem.

Mainnet beta opened on October 31, 2023, with a large airdrop of TIA to developers and early users. Celestia is seen as the flagship of the ‘modular blockchain’ idea, which splits a chain’s jobs (execution, settlement, consensus and data availability) among specialised chains, in contrast to ‘monolithic’ designs where one chain does everything.

2. Data availability sampling

A rollup processes transactions elsewhere but must publish the data so anyone can verify the results; whether that data is really published is called data availability (DA). Celestia extends each block with erasure coding (redundancy that lets missing parts be rebuilt), and light nodes download only small random pieces to check it.

This keeps the load on ordinary nodes low even as blocks grow, and ‘namespaces’ tag the data so each rollup can fetch only its own. The network is built with the Cosmos SDK and CometBFT consensus, and TIA pays fees for posting data (blob fees), is staked by validators (proof of stake) and is used in governance votes.

3. Who uses it, and milestones

Rollups such as Manta Pacific, an Ethereum layer-2, and Eclipse, which runs the Solana virtual machine, have used Celestia to store their data. A bridge called Blobstream lets contracts on Ethereum confirm that data was published on Celestia, and rollup-as-a-service providers offer Celestia as an option.

The Ginger upgrade in December 2024 cut block times from about 12 seconds to six, and later upgrades have raised how much data each block can hold. On the Crypto Nation map, TIA stands in the Cosmos neighbourhood of the Mainnet Province, because CoinGecko lists the Cosmos Hub as its first chain.

4. Things to know: demand, competition, token supply

Since Ethereum added cheap ‘blob’ space (EIP-4844) in March 2024, many layer-2s post data to Ethereum itself, so Celestia competes with Ethereum and with other DA networks such as EigenDA and Avail. Rollups that keep data off Ethereum do not fully inherit its security, and critics have argued the token was valued far above actual usage.

A large unlock of investor and contributor tokens took place in October 2024, and that year the Celestia Foundation sold 100 million dollars of tokens to investors, fuelling debate about distribution. TIA is also inflationary, as staking rewards create new coins.

Written from information public up to October 2026. It does not recommend or rate any coin and is not investment advice. If something is wrong, please tell us through the contact page.