...
- What issuers are authorized to issue what types of verifiable credentials.
- What verifiers are authorized to request what types of verifiable presentations.
- What other governing authorities are trusted to authorize these same parties and actions within their own trust registriesother trust registries (and their governing authorities) are trusted by a host trust registry.
As with all layers of the ToIP stack, the purpose of a TSS is to enable the technical interoperability necessary to support transitive trust across different trust communities implementing the ToIP stack. In this case, the desired interoperability outcome is a common protocol that works between any number of decentralized trust registries operated by independent governing authorities representing multiple legal and business jurisdictions. One specific example of this need is the digital trust ecosystem defined by the Interoperability Working Group for Good Health Pass (GHP). The GHP Trust Registries Drafting Group produced an extensive set of recommended requirements for a GHP-compliant trust registry.
...