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Data Availability Sampling and the Future of Rollup Economics
The core problem with rollups today is data availability costs. Every byte of transaction data published to L1 has a price, and that price directly determines what rollups can charge users...
Vitalik argues that data availability sampling (DAS) is the key breakthrough enabling rollups to scale beyond current limitations. The core insight: instead of requiring every node to download all data, DAS lets nodes verify data availability through random sampling, reducing costs by 10-100x while maintaining security guarantees.
This has direct implications for L2 fee markets, cross-rollup composability, and the long-term viability of Ethereum's rollup-centric roadmap.
Worth the full read if you follow L2 economics or rollup infrastructure.
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Data Availability Sampling and the Future of Rollup Economics
Vitalik Buterin · 12 min read
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