Zero-Knowledge Blockchain provides proof for all parties, without unveiling the underlying confidential data

Pioneers that use our SDK:

How It Works?

Learn how the QED-it SDK can be used to perform private asset transfers, enforce business logic, and conduct scoring queries


Deploy Zero-Knowledge Blockchains without diving into the complexity of designing a secured cryptographic protocol

Proofs for all. Data for none.

The underlying data used to create the proof is never revealed. Only the proofs and proof result is revealed to third parties.

Integrate easily to existing systems

Adaptable to every blockchain stack

Our solution includes ready-made, scalable and modular schemes for a variety of use cases:

Private Asset Transfer
  • Private, verifiable transactions
  • Fungible & non-fungible assets
  • Enforce business logic & regulation
Supply Chain Management
  • Track and trace goods and parts
  • Prove authenticity and origin
  • Compliance & regulation
Identity Management
  • Self-sovereign identities
  • Credit and risk scoring
  • Fraud prevention
* Integrate easily to existing systems. Adaptable to every blockchain stack.

Define your own queries based on your business logic using a high level programming language.

Work with our Professional Services team to customize the system for your use-case


Zero-Knowledge Blockchain combines two advanced technologies: zero-knowledge proof cryptography and enterprise blockchain

Universal Protocol

Zero-Knowledge Blockchain protocol is agnostic to the underlying consensus mechanism

Zero-Knowledge Proof Cryptography

Provides certified proof for all parties, without unveiling your underlaying confidential data

Enterprise Blockchain

Allowing companies to collaborate with their ecosystem and store proofs

Trust Accelarator

Establish efficient and trustworthy coordination among actors in the same industry.

Privacy Management

Allows compliancy with new data privacy management requirements such as GDPR

Save Time and Money

Enable more efficient audit processes based on real-time data


QED-it team is composed by a world-class team of entrepreneurs, researchers and developers. The Scientific Advisory Board includes Professor Shafi Goldwasser, co-inventor of zero-knowledge proof cryptography and 2012 Turing Award winner


Jonathan Rouach
Jonathan Rouach
CEO, co-founder
Technion Electrical Eng., Army Intel. Founder of Bits of Gold, largest Bitcoin exchange in Israel, and of a security company acquired by Digital Asset Holding
Prof. Aviv Zohar
Prof. Aviv Zohar
Chief Scientist, co-founder
Professor in Computer Science at the Hebrew University of Jerusalem. World expert for resilient blockchain consensus schemes Listed by The Marker “40 under 40”
Ruben Arnold
Ruben Arnold
Executive Chairman of the Board, co-founder
Technion Electrical Engineering Former McKinsey consultant in management and organisation, serial entrepreneur
Kobi Gurkan
Kobi Gurkan
Bar-Ilan and Tel Aviv University, M.Sc. in Applied Mathematics. Experienced Blockchain Architect Previously CTO at a security company
Ori Wallenstein
Ori Wallenstein
VP Product
Experienced product leader in B2B and B2B2C. Interdisciplinary Center Herzliya and Tel Aviv University, MBA
Shiri Lemel
Shiri Lemel
VP Business Development
Tel Aviv University engineering and MBA alumni. Former head of EMEA Tech Sales of the Enterprise Security product Trusteer at IBM

Scientific Advisory Board

Prof. Shafi Goldwasser
Prof. Shafi Goldwasser
Scientific Advisor
Professor in Electrical Engineering, Computer Science at MIT. Co-inventor of Zero-knowledge proofs. Gödel Awards 1993, 2001 Turing Award, 2012
Prof. Eran Tromer
Prof. Eran Tromer
ZKP Advisor
Assistant Professor at Tel Aviv University, Columbia Univeristy. Expert in cryptography, zero-knowledge-proof systems, zkSNARK


QED-it is proud to be part of the ZKProof.org community, supporting and contributing to the development of the standards

Our products conform to the standards developed by the community, starting with the documents generated in the first workshop


Zero-Knowledge taxation on Ethereum
Zero-Knowledge taxation on Ethereum
  At QED‐it, we have a mission to provide privacy preserving systems for the enterprise. For the last two years, we’ve worked on many projects,…
The birth of the ZKProof Community
The birth of the ZKProof Community
Co-authored by Jonathan Rouach Zero Knowledge Proofs are real and in production, and ZCash are battle testing the first zkSNARK implementation, but the use of…
The Incredible Machine
The Incredible Machine
How Alice, Bob, and Charlie used Zero-Knowledge and Blockchains to launch The Global Sudoku Revolution. This post is inspired by two great papers that make…
Press Release - Prof. Shafi Goldwasser joins QED-it Scientific Advisory Board.
Press Release - Prof. Shafi Goldwasser joins QED-it Scientific Advisory Board.
Professor Shafi Goldwasser, Turing Award winner, to join the Scientific Advisory Board for Israeli enterprise blockchain startup QED-it. Jonathan Rouach, CEO and co-founder of QED-it,…


How Zero-Knowledge Blockchain can help Europe tax GAFA?
The Zero-Knowledge Blockchain combines Blockchain’s greatest strength – decentralized sharing of information – to the Zero-Knowledge Proof properties for protecting confidential data.

הישראלים שמכניסים את בלוקצ'יין לבנקים
יכולתה של הטכנולוגיה שבבסיס הביטקוין לתעד את כל העסקאות שנעשו בה הרחיק ממנה את הבנקים QED–it הישראלית פיתחה דרך לשמור את המידע סודי https://www.calcalist.co.il/internet/articles/0,7340,L-3727170,00.html

Israeli serial startup stars of blockchain tech return with QEDit, a zero-knowledge proof diligence tool
The company, which takes its name from the Latin phrase quod erat demonstrandum (which was what would have been demonstrated) relies on the principle of zero knowledge proofs to provide audit and due diligence services for financial institutions.

HighTech. Née en Israël, QED-it est une start-up en Blockchain « BtoB »
QED-it est une start-up israélienne high-tech spécialisée dans le domaine du Blockchain BtoB. QED-it a financé son premier tour de table (Seed Round) auprès de business angels américains, israéliens et chinois de premier plan.

Talk to us about ZKP