Open Source Filings (OSF)

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              "query": "Vladimir Putin",
              "result": "POTENTIAL_MATCH",
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                  "match_basis": "primary_name",
                  "matched_name": "PUTIN Vladimir Vladimirovich",
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              "compliance_note": "A name match is a SCREENING SIGNAL, not a determination. Verify against the official source and follow your institution's escalation process before acting. Sanctions screening is a regulated activity.",
              "screening_evidence": {
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                  "records_in_scope": 291758,
                  "lists_screened_ok": 11,
                  "candidates_examined": 12
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                "clearance_statement": "On <ts> UTC, OSF screened the name '<name>' against 291,758 records across 11 of 11 configured lists ...",
                "negative_result_confidence": "complete_negative"
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                  "registry": "GLEIF",
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      "description": "One verified record per call from over 7 million provenance stamped US government and scientific records across 80 sources and 16 categories: sanctions and debarment lists, court opinions, CVEs and exploited vulnerabilities, federal contract awards, lobbying disclosures, tax exempt organizations, clinical and drug data, economic series, research papers, and more. Full JSON plus a provenance URL to the authoritative primary source.",
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            "pathParams": {
              "cve_id": "CVE-2021-44228"
            },
            "queryParams": {
              "format": "json"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "nvd": {
                "cvss_severity": "CRITICAL"
              },
              "epss": {
                "epss_probability": 0.984,
                "exploitation_band": "Critical"
              },
              "query": "CVE-2026-33017",
              "result": "FOUND",
              "service": "OSF Security - CVE Exploit Check",
              "audit_receipt": {
                "check_id": "uuid",
                "result_sha256": "..."
              },
              "coverage_note": "Direct lookup against the US CISA Known Exploited Vulnerabilities (KEV) catalog, the FIRST EPSS model score, and the NVD CVE record. 'actively_exploited' reflects presence on the CISA KEV catalog ONLY. A CVE that is NOT on KEV is not necessarily safe or unexploitable - it simply is not on CISA's confirmed-exploited list. EPSS is a probability estimate, not proof.",
              "compliance_note": "This is a decision-support signal, not a guarantee. Confirm against the linked authoritative sources (cisa.gov, nvd.nist.gov, first.org) before acting.",
              "provenance_urls": {
                "cisa_kev": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
              },
              "actively_exploited": true,
              "exploitation_summary": "ON the CISA KEV catalog - confirmed exploited in the wild."
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "type": "object"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "format"
                  ],
                  "properties": {
                    "format": {
                      "type": "string",
                      "description": "Response format (json)."
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "service",
                    "query",
                    "result",
                    "actively_exploited",
                    "compliance_note",
                    "audit_receipt"
                  ],
                  "properties": {
                    "nvd": {
                      "type": "object"
                    },
                    "epss": {
                      "type": "object"
                    },
                    "query": {
                      "type": "string"
                    },
                    "result": {
                      "type": "string",
                      "description": "FOUND, NOT_FOUND, or INVALID_INPUT"
                    },
                    "service": {
                      "type": "string"
                    },
                    "audit_receipt": {
                      "type": "object"
                    },
                    "coverage_note": {
                      "type": "string"
                    },
                    "compliance_note": {
                      "type": "string"
                    },
                    "provenance_urls": {
                      "type": "object"
                    },
                    "actively_exploited": {
                      "type": "boolean",
                      "description": "True if on the CISA KEV catalog."
                    },
                    "exploitation_summary": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          }
        },
        "routeTemplate": "/x402/security/cve/:cve_id"
      }
    },
    "x402Version": 2
  }
]