APPROACH The textile sector is undergoing a set of transformations to shift to a circular model. Within the framework of the TRICK project, an innovative approach to traceability and sustainability in textile supply chains has been developed. BACKGROUND OUTCOMES INDUSTRIAL PILOTS – CIRCULAR APPROACH The data model validation has been done through two pilots, one for the classical fashion segment and the other for the technical work-wear segment aiming to get the necessary data from a fragmented supply chain. The pilots began with the production of the goods made from virgin raw materials; the obtained garments, which usage was simulated, then were mechanically recycled. The obtained secondary raw materials include a percentage of the recycled goods; they were used to obtain garments of the same model whose characteristics were analyzed. The pilots started by an initial data gathering from the industrial users' internal system, a data validation and the mapping to the data model for its refinement. Then traceability reports were created by modeling data and reporting the product’s history. The collected data was also used to perform a PEF study across the whole supply chain. CONCLUSIONS AND NEXT STEPS The holistic approach to data collection covering traceability and sustainability data allows to easily meet the requirements from new normative: it is the case of ESPR and Digital Product Passport (DPP) enforcing a sustainable approach to production and, in parallel, more efficacy of the market surveillance authorities. The next steps will be to validate TRICK efficacy in collecting faithful data to fuel the creation of digital product passport contents from the fragmented textile supply chains. On this purpose a CEN Workshop process will be launched to share and improve such contents and contribute with a public pre- standardization activity to the establishment of a framework for collecting faithful data to support the DPP statements of the fashion firms. A Traceability Report for the data collections on the events is the TRICK response to the requirements emerged from the pilot supply chains to overcome the barriers, criticalities and needs highlighted by industrial partners involved in the project. In respect of the EPCGlobal EPCIS and UNECE event models, its Enriched Event-based Model: - offers a plurality of product and lot identification methods and a more detailed process step description with a shared taxonomy of manufacturing operations - supports the collection of the events from a wide range of heterogeneous systems, covering the many tiers of the supply chain - enforces a triangle of synergies among usual daily operations, blockchain technology and business services of a traceability platform and its disclosure policies. Enhancing Traceability and Faithfulness of Sustainability Data in the Textile and Clothing Supply Chain through Blockchain and a Standard Based Enriched Event Model Gessica Ciaccio (1), Carla Fité Galan (2), Piero De Sabbata (1), Arianna Brutti (1) (1) Italian National Agency for New Technology, Energy and Sustainable Economic Development, ENEA, TERIN-SEN-CROSS Laboratory, via dei Mille 21, 40121, Bologna, Italy (2) Polytechnic University of Catalonia (UPC), Systems and Processes lab of the Textile Research Institute of Terrassa (INTEXTER), Carrer Colom 15, 08222, Terrassa, Spain This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 958352 Fig. 5 Representation of a circular approach of the textile pilots in the TRICK project CONTACTS Gessica Ciaccio, gessica.ciaccio@gmail.com Carla Fité Galan, Carla.fite@upc.edu Piero De Sabbata, piero.desabbata@gmail.com In parallel the Transparency and Sustainability Report is the core of the Transparency and Sustainability data collection. It collects all the available non- operational data about Product and Organization and shares the data groups related to sustainability with specific