ZKsync by Matter Labs: status and timeline

Milestones

Next · ZKsync Lite sunset

ZKsync Lite mainnet launch2020Complete.
Series B funding led by Andreessen Horowitz2021Complete.
Series C $200M roundNov 2022Complete.
ZKsync Era mainnet launch with smart contracts2023Complete.
ZKsync Lite sunsetTarget 4 May 2026Not yet reached.

Upcoming

4 May 2026ZKsync Lite sunset (next)

Current obstacles

Proving latency for high throughputMaintaining subsecond proofs at 15,000+ TPS requires optimal GPU allocation and ongoing algorithm refinement.
ZKsync Lite migrationSunsetting the legacy ZKsync Lite requires helping users and applications transition to modern ZK Stack rollups.

Physics limits

Proof computation overheadGenerating zero-knowledge proofs is computationally expensive. Faster proofs require more powerful hardware or cleverer algorithms.
Data availability dependencyTransaction data must be available (on Ethereum or another DA layer) for users to reconstruct state; increased throughput means more data to store.

How it works

3 parts

Batch transactions

Group and hash txs

Sequencer collects transactions into batches and compresses them, reducing data footprint.

Generate proof

ZK proof of execution

Airbender prover generates a cryptographic proof that all transactions in the batch executed correctly, without revealing transaction details.

Settle on Ethereum

Submit proof to L1

The proof is published to Ethereum, where a smart contract verifies it. Once verified, transactions are final and secure.

Spec sheet

Spec	ZKsync
Active chains in network	19+^R (reported)
Theoretical throughput with Airbender	15,000+ TPS^R (reported)
Airbender proof generation (GPU)	Subseconds^R (reported)
Block proof time	~35 seconds per Ethereum block^R (reported)
Average transaction cost	<$0.0001^R (reported)

^R reported by the company

About Matter Labs

The team behind ZKsync

Matter Labs

ZKsync ZK rollup, ZK Stack framework

Matter Labs builds ZKsync, a zero-knowledge rollup for Ethereum, and ZK Stack, an open-source framework for building customizable ZK blockchains. The company focuses on scaling Ethereum through cryptographic proofs rather than validators.

ZKsync Era runs 19+ ZK chains. Airbender prover generates proofs in subseconds on GPUs; Ethereum settles in minutes.
ZK Stack lets enterprises build their own ZK blockchains with customizable gas tokens, sequencing models, and data availability.

zksync.io (opens zksync.io)Company profile →

Founded: 20188 yrs
Headquarters: Germany
Status: Private
Valuation: private
Raised: $256M3 rounds
Last round: Series C · $200MNov 2022
Works in: CryptoRollups & ZK proofs
Coverage: 2 programs · 4 updateslatest 1 May 2026checked 10 Oct
Lead investors: Blockchain CapitalDragonfly CapitalAndreessen Horowitz
Partners: Ethereum (opens ethereum.org)
People: Alex Gluchowski (opens linkedin.com)Co-founder & CEO

Spec

ZKsync

Active chains in network

19+^R (reported)

Theoretical throughput with Airbender

15,000+ TPS^R (reported)

Airbender proof generation (GPU)

Subseconds^R (reported)

Block proof time

~35 seconds per Ethereum block^R (reported)

Average transaction cost

<$0.0001^R (reported)