This document presents the security and trust mechanisms for TBOM within the RESCALE project. It outlines a robust framework that leverages blockchain technology, cryptographic methods, and smart contracts to ensure the integrity, authenticity, and confidentiality of TBOM data. The document details the selection criteria for the blockchain platform, with a focus on Hyperledger BESU, and explores the integration of IPFS for distributed storage. It also addresses compliance with international standards and regulatory requirements, including GDPR and cybersecurity regulations. The security framework encompassesidentity-based access control, permissions management, and integration with external PKI services.