Imagine being able to trace a product from its raw material origin, through manufacturing and use, all the way to its reuse or recycling. In a circular economy, this level of visibility is not just valuable—it is essential. Yet today, supply chains are often fragmented, with data scattered across multiple actors who may not fully trust each other. This makes it difficult to verify sustainability claims or optimise circular processes.
Blockchain changes this paradigm by enabling a shared, secure, and tamper-proof record of information. Within CIRCULOOS, stakeholders can track, verify, and collaborate, making circular supply chains more transparent, trustworthy, and efficient.
🧩Learning Objectives
- Learn why traceability is essential to enable circular strategies such as reuse, remanufacturing, and recycling. You will understand how tracking materials and products across their lifecycle helps improve sustainability, compliance, and operational efficiency.
- Discover how blockchain guarantees that shared data is tamper-proof, verifiable, and accessible to all authorised stakeholders, creating a single source of truth across the supply chain.
- Identify what data should be tracked across product lifecycles: Define relevant traceability data, including materials origin, transformation processes, certifications, ownership, and lifecycle events, to ensure meaningful, usable traceability systems.
- Understand the key components of a traceability system, including data flows, system architecture, on-chain vs off-chain storage, and how different stakeholders interact within the ecosystem.
🧩What you will learn from the video
This video guides you through the essentials of traceability, starting with the challenges faced in today’s supply chains. You will see how fragmented data, limited interoperability, and low levels of trust between stakeholders make it difficult to verify information—especially when it comes to sustainability and circularity claims.
Building on this, the video explains why blockchain is particularly well suited to address these challenges. Instead of relying on a central authority, it enables multiple independent actors to collaborate within a shared and trusted environment, where all participants can access the same reliable data.
You will then explore what kind of information needs to be tracked to enable effective traceability. This includes not only the origin of raw materials, but also how they are transformed, transported, and certified throughout the product lifecycle. Understanding this is key to building meaningful traceability systems that support circular economy strategies.
The video also introduces how traceability systems are designed in practice, helping you understand how different actors interact, how data flows across the lifecycle, and how processes are structured from production to end-of-life.
A key part of the training focuses on the distinction between on-chain and off-chain data management, showing how to balance trust, performance, and scalability when designing real-world solutions.
Finally, you will discover how digital identity and smart contracts act as the backbone of these systems—ensuring that data comes from trusted sources and enabling automated validation, compliance checks, and lifecycle tracking.
🧩Training Material
This presentation provides a structured and visual deep dive into traceability concepts and architectures. It includes:
- Detailed diagrams of traceability data flows and system architecture
- Practical examples inspired by CIRCULOOS use cases
- Explanations of on-chain vs off-chain strategies
- Insights into business value and implementation challenges
👉 Explore the PPT to better understand how to design traceability systems and apply them in real industrial contexts.
🧩Try it yourself
🔗https://github.com/alastria/Circuloos-Hash-API
This hands-on resource allows you to experiment with data notarisation on blockchain, a key mechanism for traceability.
By using this repository, you can:
- Learn how data is hashed and anchored on the blockchain to guarantee integrity
- Test APIs that ensure data authenticity and non-repudiation
- Simulate real traceability scenarios where data must be verified across stakeholders
- Understand how blockchain can act as a proof layer without exposing sensitive data
👉 Test the API and validate how blockchain guarantees data authenticity in traceability systems.
🧩Continue your learning journey
Now that you understand how blockchain enables traceability in circular supply chains, you can move to the next key building block: digital identity. Traceability systems rely on trust in the data source—and that trust is ensured through Self-Sovereign Identity (SSI).
👉 In the next module, you will learn how:
- Stakeholders are uniquely and securely identified
- Data ownership and access are managed
- Trust is established across the ecosystem
➡️ Go to Module 3: Self-Sovereign Identity for Circular Manufacturing