# \#optimistic-rollups

**URL:** https://forum.tezosagora.org/tag/optimistic-rollups/27.md

[Latest](https://forum.tezosagora.org/latest.md) · [Categories](https://forum.tezosagora.org/categories.md) · [Tags](https://forum.tezosagora.org/tags.md)

---

## [An impromptu chat with Arthur Breitman about Rollups both ZK and Optimistic](https://forum.tezosagora.org/t/an-impromptu-chat-with-arthur-breitman-about-rollups-both-zk-and-optimistic/3576)

<div class="topic-metadata">

**Author:** [@JarrodWoodard](https://forum.tezosagora.org/u/JarrodWoodard)\
**Replies:** 0\
**Last updated:** [August 17, 2021, 10:26pm UTC](https://forum.tezosagora.org/t/an-impromptu-chat-with-arthur-breitman-about-rollups-both-zk-and-optimistic/3576 "2021-08-17T22:26:35Z")

</div>

This exchange took place on July 27th in the Tezos element chat. It has been formatted and edited to make it more readable. Jarrod Woodard: ZkRollups can only contain transactions, not contract calls, right? Murbard: …