Abstract
In this paper, we provide a semantic foundation for trust-related con- cepts in the light of trust management. We extend our previous work, the Refer- ence Ontology of Trust, to clarify and provide a deeper account of some building blocks of trust, such as beliefs and intentions of a trustor, pieces of evidence that indicate that a trustee is trustworthy (or not), as well as the many factors that in- fluence trust. We illustrate our proposal by instantiating and discussing people’s trust in vaccines in the time of COVID-19.