The Ethereum data availability landscape 🧵
With the rapid growth of L2s, a spectrum of data availability solutions have emerged ranging from off-chain to on-chain DA layers.
How do the cost and security tradeoffs of different DA solutions compare?
blog.celestia.org/ethereum-off-chain-data-availability-landscape/
Pure validiums
A validium uses zero knowledge proofs for transaction validity and stores transaction data off-chain with a central data provider.
Pure validiums represent the cheapest and least secure in this spectrum
Data availability committees (DACs)
Rather than a single provider, a committee is entrusted with providing data availability to the network.
If the committee were to act maliciously, they could freeze or steal all funds on the chain and kill the chain’s liveness entirely.
Celestium
A Celestium is an L2 chain that leverages Celestia for data availability, but uses Ethereum for settlement and dispute resolution.
The validator set of Celestia is akin to a permissionless DAC but with economic security guarantees in the form of slashing.
Ethereum rollups
Rollups that leverage Ethereum’s on-chain data availability inherit the highest DA guarantee at the highest cost.
For users that desire lower cost, other off-chain DA options will be available, including Celestiums.
To learn more about Celestiums, check out our recent blog post and thread here 👇
twitter.com/CelestiaOrg/status/1491129074341019649