Definition: Trusted Issuers Registry ABB is an Application Component that enables the registration, discovery, validation, and trust verification of authorised credential issuers across federated and interoperable digital ecosystems. Source: EBSI Source reference: https://ec.europa.eu/digital-building-blocks/wikis/display/EBSI Last modification: 2026-06-09 Identifier: http://data.europa.eu/dr8/TrustedIssuersRegistryApplicationComponent LOST view: Technical view - application EIRA concept: eira:ArchitectureBuildingBlock ABB name: eira:TrustedIssuersRegistryApplicationComponent Synonym: Issuer Trust Registry Example: The following implementation is an example on how this specific Architecture Building Block (ABB) can be instantiated using trusted issuer registries within EBSI or EUDI Wallet ecosystems. Interoperability Saliency: The Trusted Issuers Registry ABB is salient for interoperability because it enables cross-border trust validation and authorised issuer verification in decentralised credential ecosystems. EIF Layer: TechnicalApplication Additional information: Supports federated trust governance and credential issuer validation. Additional identifier: http://data.europa.eu/dr8/TrustedIssuersRegistryApplicationComponent