DEFONEOS Open Ontology

RDF/OWL Schema & Namespace

The DEFONEOS Ontology is published at https://defoneos.com/ontology# as a versioned RDF/OWL document. It extends schema.org and PROV-O for provenance.

Core classes

Why RDF/OWL and not JSON Schema

DEFONEOS Ontology vs Palantir Ontology

Why Palantir wins deals today (and why DEFONEOS wins them tomorrow)

Palantir wins because procurement officers recognise the brand and fear the alternative risk. Once a buyer has seen the DEFONEOS Ontology run a live maritime operation alongside a counter-drone exercise alongside an emergency services dispatch — all from the same RDF store — the procurement risk flips. "We trust the open, auditable, sovereign thing we can read and modify" beats "We trust the $50M/yr proprietary thing we cannot".

The killer feature: audit-grade provenance

Every Palantir ontology change goes into a centralised log. Regulators and auditors cannot independently verify it. With DEFONEOS, every change is Ed25519-signed by the BFT council that authorised it, hash-chained to the previous change, and optionally anchored to the Bitcoin blockchain. Auditors don't trust DEFONEOS — they verify it.

SPARQL Query Examples

DEFONEOS data is queryable via SPARQL 1.1 (with spatial extension). The same MCP servers that ingest data also serve SPARQL.

Find all dark vessels in the English Channel in the last 6 hours

PREFIX defo: <https://defoneos.com/ontology#>
PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#>
PREFIX time: <http://www.w3.org/2006/time#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

SELECT ?vessel ?name ?lastSeen ?confidence WHERE {
  ?track a defo:Track ;
         defo:platform ?vessel ;
         geo:lat ?lat ;
         geo:lon ?lon ;
         defo:timestamp ?lastSeen ;
         defo:confidence ?confidence .
  ?vessel a defo:Vessel ;
           defo:name ?name ;
           defo:dark true .

  FILTER(?lat > 49.0 && ?lat < 51.5 && ?lon > -2.0 && ?lon < 2.0)
  FILTER(?lastSeen > (NOW() - "PT6H"^^xsd:duration))
}
ORDER BY DESC(?confidence)
LIMIT 100

Find all drone swarms classified as Class 3+ near restricted airspace

PREFIX defo: <https://defoneos.com/ontology#>
PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#>

SELECT ?drone ?class ?operator ?distance WHERE {
  ?drone a defo:Drone ;
         defo:droneClass ?class ;
         defo:operator ?operator ;
         geo:lat ?dLat ;
         geo:lon ?dLon .

  ?zone a defo:RestrictedAirspace ;
        geo:lat ?zLat ;
        geo:lon ?zLon ;
        defo:radius ?radius .

  BIND(geof:distance(?dLat, ?dLon, ?zLat, ?zLon) AS ?distance)

  FILTER(?class >= 3)
  FILTER(?distance < ?radius)
}
ORDER BY ?distance

Federated query: maritime MCP + aviation MCP + weather MCP

PREFIX defo: <https://defoneos.com/ontology#>

SELECT ?vessel ?aircraft ?wind WHERE {
  SERVICE <https://mcp.defoneos.com/aisstream/sparql> {
    ?vessel a defo:Vessel ; defo:lastSeen ?vT .
  }
  SERVICE <https://mcp.defoneos.com/opensky/sparql> {
    ?aircraft a defo:Aircraft ; defo:lastSeen ?aT .
  }
  SERVICE <https://mcp.defoneos.com/metoffice/sparql> {
    ?obs a defo:WeatherObservation ; defo:windSpeed ?wind .
  }
  FILTER(?vT > NOW() - "PT1H"^^xsd:duration)
  FILTER(?aT > NOW() - "PT1H"^^xsd:duration)
}

SIGIL Audit Trail

Every modification to the ontology — adding a class, changing a property, ingesting a new object, running an action — is recorded as a SIGIL entry. SIGILs are Ed25519-signed and chained. The chain is optionally anchored to Bitcoin (proofof.ai) for external immutability.

Sample SIGIL

H|defoneos|ontology|action=CreateObject|type=Vessel|imo=9456321|ts=2026-07-05T14:23:01Z|agent=aisstream-mcp|sigil=4f8a2c91e7b3d6a0|sig=0x9f4e2a...c83b
V|defoneos|bft-validator-09|approved|conf=0.94|rationale="IMO valid, AIS position consistent with satellite"|ts=2026-07-05T14:23:02Z
M|defoneos|ontology|property=lastSeen|target=vessel:9456321|new=2026-07-05T14:23:00Z|prev=2026-07-05T13:45:00Z|diff=38min|prev_sigil=4f8a2c91e7b3d69f
A|defoneos|bft-council|quorum=23/33|for=24|against=0|abstain=9|action=PromoteToDarkVessel|target=vessel:9456321

Audit properties

• Tamper-evident — Ed25519 signature on every entry; chain hash includes prior hash
• Non-repudiable — every agent and validator is identified by Ed25519 public key registered in the OrgKernel L1
• Externally verifiable — anyone with read access can verify the chain; anchor to Bitcoin makes deletion economically infeasible
• Re-playable — defoneos_audit_replay(start, end) reconstructs exact ontology state at any historical moment
• Regulator-friendly — JSP 936, ISO 42001, EU AI Act all satisfied with a single SIGIL export

Compliance frameworks natively supported