Rollup
A rollup is a layer-2 system that batches transactions off-chain and posts compressed data and proofs back to a base chain.
Category
Layer-2 Rollups
These concepts explain how rollups improve throughput and how users move funds between layers.
How to recognize this theme
Terms used when scaling a blockchain with batches and proofs.
In a daily board, this category groups terms by their shared role. Look for four cards that describe the same mechanism, risk area, or workflow rather than four words that merely sound similar.
Educational context
These entries are vocabulary notes for learning. They are not project endorsements, token recommendations, exchange rankings, or trading signals.
Sequencer
A sequencer is the component that orders transactions for a rollup and proposes batches that later get finalized on the base chain.
State Root
A state root is a cryptographic commitment (often a Merkle root) to a blockchain or rollup's state after a set of transactions.
Withdrawal Delay
A withdrawal delay is the waiting period required to move assets from a layer-2 back to the base chain, often tied to finality or fraud-proof windows.