Making transparency and communication in circular value chains possible by utilising blockchain and zero knowledge  


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Smart Questioning

Enables stakeholders to ask questions about a product and receive trusted answers, basing answers on data that has never been viewed, accessed or shared with anyone. Our implementation of zero-knowledge changes the risk from losing your competitiveness to an asset: collaborative advantage!

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Open Source

We embrace the principles of open source, collaborative participation, transparency and community-oriented development. Everyone can see and work on our source code. Everyone is welcome to build their own applications on top of the Circularise protocol. Together we can make the circular economy a reality.

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Circularise utilises cryptographically enabled, decentralised distributed databases, more commonly known as blockchain technology. We believe that, just like with the circular economy, everyone should have the ability to become a stakeholder and own a stake in the system.

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Security is our number one priority, but you do not have to take our word for it. By recording transactions in the blockchain, we ensure the immutability of the associated data. As our code is open source, it is auditable by anyone. We are working together with numerous third parties that provide in-depth security audits for every Circularise product.

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The core of the Circularise protocol consists of numerous smart contracts, a collection we call CIRCONTRACTS which runs on the Ethereum decentralised platform. This platform allows you to do business without an intermediary by solely using a decentralised application. Anyone can see and verify the inner workings of the contracts, and anyone can propose changes to the core system. 


You can use any of our interfaces to interact with the protocol.

CIRDASH: an easy to use interface for professional users to generate carriers, read/write data and use the smart questioning functions.

CIRAPP: a front-end for end-users, providing them with all relevant product information and a touchpoint between consumer and manufacturer.

CIRAPI: An API for easy integration with your existing apps, or to build your own!


To use the Circularise protocol, you can create unique identifiers called CIRLABELS and attach them to materials, parts and products. CIRLABEL is sold at cost price. Carriers range from QR codes to RFID and NFC. You can also use any IOT enabled device, but our only requirement is that there is an offline backup identifier that can be used in case of damage. 

We also offer a CIRLABEL+ with expanded capabilities for an additional fee.








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Founder - The idea for Circularise was born during Mesbah’s Master research in Industrial Design Engineering at the Delft University of Technology. Passionate about circular economy and entrepreneurship, Mesbah educated himself in JavaScript to kickstart Circularise.

LinkedIn | Twitter

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Jordi de Vos

Founder - Jordi is an early blockchain aficionado with a business background, "temporarily" trading his MBA for real entrepreneurial experience. He starts his days by checking the latest news and FUD and has been a tireless entrepreneur since his first year of Bachelor studies when he met Mesbah.


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CTO - Arvind co-founded Milvum (a digital transformation lab) in 2012 and joined Circularise as CTO in 2017. He is an advocate for the AI and blockchain technologies, making use of them with his teams at Milvum. In 2017, they were awarded a prize in the Dutch Blockchain hackathon.


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Andreea Bota

Marketing Manager - Andreea joined Circularise as a Marketing Manager after gaining experience in most of the roles that would make a marketing team. Over the past 8 years, she wore the hats of journalist, project manager, business developer, communications strategist, and marketing specialist.

LinkedIn | Twitter

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Brian Smits

Technical Account Manager - With over 8 years of experience in sales, finance and recruitment, Brian is merging all this experience in his role of Technical Account Manager at Circularise. His business instinct helped him understand the importance and future of a circular economy.


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Jip Friesen

Regional Representative  - Asia - Jip is a passionate linguist and globetrotter, who has lived in China for the past few years. After living in the ancient capital Xi'an and in Xianyang, he is now located in Jinan, China. He has had a fair taste of air pollution, therefore he is eager to make the world greener. 


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Siebren Hoekstra

Legal Researcher - Siebren is working on a research focused on the Dutch cryptocurrency market legislation. He seeks to understand the legal differences between an ICO and an IPO, and how regulation can protect but still foster innovation. With this research, he will graduate from Erasmus School of Law, Rotterdam


Pietro Pasotti Circularise



Lead Researcher - Pietro likes to think that his head is in the clouds of theory while the rest of him is ankle-deep in the mud of practice. He has a degree in Philosophy and one in Logic, to which he added two years of academic research in artificial intelligence. He loves to analyse complex things, synthesise clever solutions, and do art.

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Tim de Jong

Developer - Tim is a game and media expert with roots in the universities of Utrecht and Delft. He found himself with an aptitude and passion for all things blockchain. As a true table tennis fanatic, he does not let up on people. Always concerned with the little details, Tim drives others and himself to always bring their A-game.

Jelle Licht

Developer - Jelle, straight from the Delft University of Technology, is a free software hacker and coffee devotee. He loves breaking and subsequently trying to fix his own gadgets. Is not on friendly terms with the office printer, but he is definitely a passionate developer.

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Kaj Oudshoorn

Developer - Kaj is a result-oriented researcher from the Delft University of Technology. He is a developer who can usually be found in a variety of positions that would make a contortionist blush. He enjoys finding practical applications of cutting-edge theory and technology, and never goes anywhere without his trusty notebook.

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Thomas Koes

Delegator & Innovator Product Owner - Using his MSc degree in Economics & Business of the Erasmus University Rotterdam, Thomas keeps developers on the right path. While originating from a business background, he is often mistaken for a developer fusing business firmly with technology.


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We are hiring!

We are looking for talented people to join our team! Feel free to contact us at any time.





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David Peck

A Senior Research Fellow with TU Delft and also a Visiting Professor at Coventry University and Adjunct Professor at MIP Politecnico di Milano, David also manages projects with the EU EIT Raw Materials and H2020, such as ProSUM project. He has a focus on the circular economy, critical materials and circular built environment, and has published more than a dozen academic articles about circular economy and critical materials. 

LinkedIn | Twitter

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Pascal Leroy

Secretary General of the WEEE Forum, Pascal has been involved in e-waste matters since 2000 when the European Commission proposed its WEEE legislation. Also a member of the European Innovation Partnership on Raw Materials, he has run or been involved in various EU projects that support the advance of the circular economy, interactions among parties in the value chain, and optimal collection and recovery of materials from e-waste.

LinkedIn | Twitter

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Tom in het Veld

Senior Vice President Business Development at iQor, Tom spent 25 years solving complex issues for global brands. He solved these problems through support of Product Repair Services and Customer Interaction. Tom believes that data analytics will enable further efficiencies in the reverse supply chain, accompanied by the highest customer experience and effective cost of service.




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