# What is zkSync Era and zk Rollups?

By [belovsv90](https://paragraph.com/@belov) · 2023-05-17

zk rollup, zksync era, zero knowlege, zk

---

**zkSync Era** is an Ethereum scaling platform that uses zero-knowledge proofs and roll-up technology. The point is that the protocol groups transactions in order to increase network throughput. ZkRollup handles most of the transactional data outside of the main blockchain. It produces cryptographic proofs that allow users to prove they have certain data without revealing the details of that data, hence the term “Zero Knowledge”.

**Zk-Rollups**, including zkSync, compute transactions off the Ethereum blockchain by providing a tiny cryptographic proof that is recorded as a single transaction back into Ethereum, showing that a bunch of other transactions were correct. zkSync also uses recursion, which generates a proof showing that a batch of other proofs has been executed — each representing a set of transactions.

---

*Originally published on [belovsv90](https://paragraph.com/@belov/zkrollup-zksyncera)*