Validium Design

Definition ∞ Validium Design is a type of Layer 2 scaling solution for blockchains that uses zero-knowledge proofs to verify transactions off-chain, while maintaining data availability off-chain as well. Unlike ZK-rollups, Validiums store transaction data with a data availability committee or other external mechanism, rather than on the main chain. This approach significantly increases transaction throughput and reduces costs. It offers a high degree of scalability with a different security model compared to other Layer 2 solutions.
Context ∞ The trade-offs inherent in Validium Design, particularly concerning data availability and censorship resistance, are a key discussion point in the scalability debate for blockchain networks. While offering high throughput, the reliance on off-chain data availability committees presents distinct security considerations. A critical future development involves exploring hybrid models and enhanced data availability solutions to strengthen the security guarantees of Validium designs.