Guiding questions

  1. Standardised Metadata Models

  • Which metadata standards (e.g., DCAT-AP, schema.org, sector-specific ontologies) should be adopted as the baseline?

  • Do we need to extend existing metadata models with Green Deal–specific descriptors (e.g., CO₂ footprint, energy efficiency, circularity indicators)?

  • How can we ensure interoperability with other European Data Spaces (health, mobility, manufacturing)?

  • Will connector software manifests (root of trust, OS/app) be published to support supply-chain trust?

  • Which metadata standards (e.g., DCAT-AP, schema.org, sector-specific ontologies) should be adopted as the baseline?

  • Do we need to extend existing metadata models with Green Deal–specific descriptors (e.g., CO₂ footprint, energy efficiency, circularity indicators)?

  • How can we ensure interoperability with other European Data Spaces (health, mobility, manufacturing)?

  • Will connector software manifests (root of trust, OS/app) be published to support supply-chain trust?

  1. Policy-Aware Descriptions

  • What types of data usage policies (e.g., open, restricted, commercial, research-only) should be standardised?

  • How should sustainability obligations (e.g., alignment with EU taxonomy, compliance with CSRD or energy reporting) be represented in dataset metadata?

  • Should policy metadata be mandatory for all offerings, or only for those connected to regulated domains (like emissions reporting)?

  1. Machine-Readability and FAIR Compliance

  • Which formats and APIs should be enforced for machine-readable descriptions?

  • How can FAIR principles be operationalised across sectors?

  • Should minimal mandatory metadata fields be defined?

  • Will policy/usage terms be machine-readable and linked to identity/trust artifacts?

  • Will JSON-LD be used to express metadata/context, and will SHACL validation rules be provided?

  1. Sector-Specific Extensions:

  • Which sustainability-related attributes should be mandatory in sector-specific extensions (e.g., building lifecycle data in construction, CO₂ intensity in energy)?

  • How do we balance general interoperability with the need for highly specialised descriptors?

  • Should governance rules for approving new sector-specific extensions be established, and by whom?

  1. Ecosystem Visibility and Transparency

  • How can a unified catalogue or registry be maintained and updated?

  • What mechanisms (e.g., dashboards, registries, APIs) are needed to maintain transparency for participants?

  • Should there be obligations for providers to regularly update or validate their dataset/service descriptions to prevent outdated information?

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