# Rebased Rollups: Achieving Credibly Neutral Synchronous Composability with Low Latency and Cost

- Channel: [ETHBerlin](https://streameth.org/ethberlin)
- Date: 2025-06-19
- Duration: 23:45
- Watch: https://streameth.org/watch/68554dbd90bd41297bb10bf7

## Description

Rebased rollups introduce a novel paradigm blending the advantages of based and non-based rollups to provide synchronous composability, credible neutrality, and reduced latency without incurring the full cost and latency penalties associated with Ethereum-based rollups. By becoming ""based on-demand"" for durations shorter than a full Ethereum slot, rebased rollups efficiently utilize Ethereum’s existing proposer set to facilitate faster transaction confirmations and increased throughput.