Validium Architecture

Architecture

Validium architecture represents a scaling solution for blockchains, particularly Ethereum, employing off-chain data availability while maintaining on-chain validity proofs. This contrasts with rollups, where data is typically posted on-chain, offering a trade-off between cost and trust assumptions; Validium prioritizes lower transaction costs by leveraging external data availability committees. Consequently, the security model relies heavily on the integrity and responsiveness of these committees, introducing a different risk profile compared to on-chain data availability.