# Scaling Content type: Topic Hub Related resources: - Based Rollup (Glossary Term): https://theblockchainlibrary.com/glossary/based-rollup - Blob (Glossary Term): https://theblockchainlibrary.com/glossary/blob - Danksharding (Glossary Term): https://theblockchainlibrary.com/glossary/danksharding - Data Availability (Glossary Term): https://theblockchainlibrary.com/glossary/data-availability - Data Availability Sampling (Glossary Term): https://theblockchainlibrary.com/glossary/data-availability-sampling
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Scaling

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Key Glossary Terms

Essential vocabulary for this topic

Based Rollup

expert

A rollup design that relies on the base layer's block proposers to sequence or include rollup transactions.

Blob

advanced

A large temporary data object designed to carry rollup data more cheaply than permanent execution calldata.

Danksharding

expert

An Ethereum scaling roadmap centered on providing large amounts of data availability for rollups.

Data Availability

advanced

The property that transaction and state-transition data needed to verify a blockchain or rollup is accessible to participants.

Data Availability Sampling

expert

A method allowing nodes to probabilistically verify that large data blocks are available by downloading only small random samples.

Fraud Proof

advanced

A proof submitted to challenge an invalid state transition asserted by an optimistic rollup.