Celestia’s New Rival Launches in Mainnet: What is Avail DA?

Avail data availability mainnet officially went live, accompanied by the introduction of its native AVAIL token. Avail, which spun out of Polygon in early 2023, has raised $75 million in funding to date. The AVAIL token plays a crucial role in Avail's ecosystem, being used to cover data availability fees and participate in network staking.

AVAILwill have a total supply capped at 10 billion tokens. In April, Avail conducted an airdrop of 600 million AVAIL tokens to various participants, including blockchain developers, testnet contributors, and Polygon PoS stakers. This airdrop will be claimable once the Avail DA layer is live.

Addressing Blockchain Fragmentation and Scalability

Avail is designed to solve two major issues in the blockchain world: fragmentation and scalability. The project’s data availability layer (Avail DA) is engineered to efficiently store and manage the vast amounts of transactional data generated by blockchains, particularly layer-2 solutions on Ethereum.

The core of Avail's technology lies in its use of KZG commitments and data availability sampling (DAS). These technologies allow Avail to offer advanced data availability infrastructure, addressing critical challenges in the blockchain ecosystem. 

Avail's approach combines KZG commitments, which provide cryptographic assurances of data integrity, with DAS, which ensures that data can be quickly and reliably sampled by lightweight clients.

Consensus Mechanism and Validator Network

Avail employs a Nominated Proof-of-Stake (NPoS) consensus mechanism, which is designed to prevent centralization and ensure equitable distribution of staked tokens among validators. Initially, Avail aims to onboard 1,000 validators, with the potential to expand to 10,000 as the network grows.

The NPoS system is complemented by Avail's light clients, which use validity proofs and data availability sampling to verify data on consumer-grade hardware such as mobile phones. This setup enables fast verification of data immediately after block finalization, helping to maintain network security and efficiency.

Comparison with Competitors

Avail enters a competitive field where Celestia has established itself as a pioneer. Celestia, which went live last October, has been at the forefront of data availability solutions and recently introduced its TIA token. Other competitors include NEAR Protocol’s Nuffle Labs, which secured $13 million in funding for its data availability project.

However, Avail claims to be the only chain-agnostic data availability layer with KZG commitments and sampling data availability. This combination, according to Avail, provides unique advantages for rollups, allowing them to operate with features similar to Ethereum's full Danksharding roadmap.

Future Developments and Ecosystem Impact

Avail’s launch marks the beginning of a broader vision that includes two additional major components: the interoperability layer Nexus and the security network layer Fusion. These upcoming releases are expected to further enhance Avail’s capabilities and its impact on the blockchain ecosystem.

By providing robust data availability infrastructure, Avail aims to support the scaling of decentralized blockchains, enabling developers to build and deploy rollups and other blockchain solutions more efficiently. 

The project's chain-agnostic approach means it can support various execution environments and rollup constructs, broadening its applicability across different blockchain networks.