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UNTP (United Nations Transparency Protocol) is a framework developed by the United Nations to support traceability and transparency of supply chains, particularly regarding sustainability claims. The protocol aims to provide a common language for sustainability claims, a neutral trust model to verify these claims, and a decentralized architecture based on credentials, allowing product data to travel with the item, independent of specific platforms. In the context of the Digital Product Passport (DPP), UNTP defines standards for JSON-LD data structure, particularly for Emissions Performance, Material Provenance, Conformity Claims, and SecureLink. Verisav validates and generates UNTP DPP v1.1.0 compliant DPPs, ensuring interoperability and verifiability of sustainability information. UNTP (United Nations Transparency Protocol) is a framework developed by the United Nations to support traceability and transparency of global supply chains, particularly regarding sustainability claims and environmental assertions. This protocol was created to meet the growing need for transparency and verifiability of product sustainability information, particularly in the context of fighting climate change and promoting the circular economy. The UNTP protocol aims to provide several essential elements: a common language for sustainability claims (enabling different parties to communicate in a standardized manner), a neutral trust model to verify these claims (ensuring authenticity and credibility of information), and a decentralized architecture based on credentials that allows product data to travel with the item, independent of specific platforms. This decentralized architecture is particularly important as it ensures that sustainability data does not depend on a specific platform or system, but can be accessible and verifiable by all supply chain stakeholders. In the context of the Digital Product Passport (DPP), UNTP defines standards for JSON-LD data structure, particularly for Emissions Performance (emission performance), Material Provenance (material provenance), Conformity Claims (conformity claims), and SecureLink (secure links to external resources). These standards ensure that sustainability information is structured consistently and can be easily verified and compared. Verisav validates and generates UNTP DPP v1.1.0 compliant DPPs, thus ensuring interoperability and verifiability of sustainability information, and enabling companies to provide transparent and verifiable information on their products' sustainability.