Transparent Trust Assessment in 6G Using Blockchain

Trust assurance will be a cornerstone of the security and autonomy of sixth-generation (6G) networks. Traditional trust models focus on data authenticity and integrity; however, 6G systems increasingly rely on autonomous decision-making. This article presents blockchain as a dual function in 6G: first, as a decentralized and immutable ledger, and second, as a trustor, an entity that guarantees the transparency, traceability, and immutability of the trust assessment process itself. A conceptual framework is proposed in which blockchain houses both trust metrics and the logic that governs their assessment using smart contracts.