StarkWare’s zero-knowledge prover Stwo comes out of stealth 

Stwo, StarkWare’s latest prover, is designed to significantly reduce latency and transaction costs

article-image

StarkWare Chief Operating Officer Oren Katz | StarkWare modified by Blockworks

share

StarkWare, the company behind scaling solution Starknet, announced at Eth Denver today that it is building Stwo, a zero-knowledge prover designed to reduce latency and transaction costs. 

This new prover will be built open-sourced under the Apache 2.0 license, Oren Katz, the chief operating officer at StarkWare, noted in a press release reviewed by Blockworks. This means that anyone will be able to fork the code, modify and distribute modified versions of the software. 

“Stwo will bring new possibilities for scaling. And they’ll be available for everyone, given that it will be open source from day one,” Katz said.

In the context of blockchain technology, zero-knowledge provers refer to a computation entity responsible for determining whether or not given information is accurate without revealing its underlying data. These provers must create “proofs” that can then be verified by verifiers. 

Read More: How to decentralize a prover, according to an engineer who did it for fun

Stwo will not be the first open-sourced prover that StarkWare has developed. Currently, the public Starknet blockchain and Starknet app chains use its first-generation prover called Stone. 

Katz notes that Stwo will be an evolution to the Stone prover thanks to the Circle Stark protocol that Starkware developed in partnership with Polygon.

According to StarkWare, Circle Stark protocol’s Circle STARK proofs increase the efficiency of existing STARKs. STARKS on Starknet are considered under the same classification as validity proofs on other zero-knowledge blockchains, which are used to attest to the validity of a specific state. 

“Stwo is an evolution of the Stone prover because the Circle Stark protocol circumvents the constraints imposed by the classic STARK protocol. These constraints previously prevented STARK from being used efficiently for smaller fields,” Katz said.


Get the news in your inbox. Explore Blockworks newsletters:

Tags

Decoding crypto and the markets. Daily, with Byron Gilliam.

Upcoming Events

Old Billingsgate

Mon - Wed, October 13 - 15, 2025

Blockworks’ Digital Asset Summit (DAS) will feature conversations between the builders, allocators, and legislators who will shape the trajectory of the digital asset ecosystem in the US and abroad.

recent research

Research Report Templates.png

Research

Content Delivery Networks (CDNs) represent low-hanging fruit in a massive market ripe for Web3-driven disruption. The global CDN market was valued at ~$28B in 2024, and is projected to surpass $140B by 2034, (18.75% CAGR) underscoring the immense demand for efficient content delivery.

article-image

US dollars might technically be worth less, but it’s still good news

article-image

Apps are doing well, as is casino gaming, says Tom Schmidt of Dragonfly

article-image

Sponsored

Machine DeFi brings programmable peer-to-peer finance into contact with tangible machines that generate real-world value

article-image

What happens to your investment portfolio when the companies driving returns are no longer in it?

article-image

Wow, the ETF hype sure didn’t last long

article-image

The private sector lost 33,000 jobs in June; analysts had projected payrolls to add 100,000 positions