Since August 2026, zelph has been supported by NLnet’s NGI0 Commons Fund for Auditable Reasoning over Linked Open Data, with financial support from the European Commission’s Next Generation Internet programme and from the Swiss State Secretariat for Education, Research and Innovation.

When a reasoner draws a conclusion in an open knowledge graph, the result typically emerges and the proof remains within the tool. The project turns zelph’s ability to reason over Wikidata into infrastructure usable by any open knowledge graph: streaming import for RDF/N-Triples and JSON-LD, an open export format that publishes full derivation chains as Linked Data, a reusable library of constraint rules, and a proof explorer that lets anyone trace a derived fact back to its evidence.

The project page at NLnet: https://nlnet.nl/project/Zelph/