{
  "schemaVersion": "human-design-independent-replay-v1",
  "observedAt": "2026-09-25",
  "scope": {
    "cases": 246,
    "description": "240 seeded synthetic birth instants from 1900–2099 plus the 6 previously published cases. Each chart is derived by OpenFate and by a separately written replay with different ephemeris code.",
    "seed": 20260925
  },
  "tolerances": {
    "positionDegrees": 0.1,
    "designInstantSeconds": 120
  },
  "comparedFields": [
    "type",
    "strategy",
    "authority",
    "definition",
    "profile",
    "definedCenters",
    "channels",
    "26 activation gates and lines"
  ],
  "results": {
    "cases": 246,
    "ruleLayerMismatches": [],
    "maxPositionDeltaDegrees": 0.050481,
    "maxPositionDeltaDegreesByBody": {
      "Sun": 0.00318,
      "Moon": 0.050481,
      "Mercury": 0.004771,
      "Venus": 0.005529,
      "Mars": 0.002886,
      "Jupiter": 0.002816,
      "Saturn": 0.003209,
      "Uranus": 0.003366,
      "Neptune": 0.005118,
      "Pluto": 0.007811,
      "NorthNode": 0.004709
    },
    "maxMoonDeltaDegrees1900To2099": 0.019887,
    "maxNonMoonDeltaDegrees": 0.007811,
    "maxDesignInstantSeconds": 51.226,
    "endToEndIdentical": 243,
    "endToEndDifferenceCount": 3,
    "unexplainedDifferences": [],
    "endToEndDifferences": [
      {
        "id": "cohort-103",
        "birthUtcIso": "2078-12-14T12:35:30.000Z",
        "fields": [
          "activations"
        ],
        "activations": [
          {
            "side": "design",
            "body": "Jupiter",
            "engine": "9.3",
            "replay": "9.4",
            "positionDeltaArcSeconds": 7.71,
            "engineLineEdgeArcSeconds": 2.78,
            "explainedByBoundary": true
          }
        ]
      },
      {
        "id": "cohort-180",
        "birthUtcIso": "2008-11-21T00:55:30.000Z",
        "fields": [
          "activations"
        ],
        "activations": [
          {
            "side": "design",
            "body": "Neptune",
            "engine": "49.4",
            "replay": "49.5",
            "positionDeltaArcSeconds": 18.35,
            "engineLineEdgeArcSeconds": 16.39,
            "explainedByBoundary": true
          }
        ]
      },
      {
        "id": "cohort-228",
        "birthUtcIso": "2068-05-28T14:41:30.000Z",
        "fields": [
          "activations"
        ],
        "activations": [
          {
            "side": "design",
            "body": "Pluto",
            "engine": "25.3",
            "replay": "25.2",
            "positionDeltaArcSeconds": 5.8,
            "engineLineEdgeArcSeconds": 1.39,
            "explainedByBoundary": true
          }
        ]
      }
    ]
  },
  "limitations": [
    "Both implementations follow the same declared conventions and public definitions; a shared definitional error would not be detected.",
    "Astronomy Engine is less precise than Swiss Ephemeris for the Moon; a line can differ when an activation lies within that small disagreement of a line edge.",
    "Dates far from the present depend on different ΔT models; the largest position difference in this record is the Moon in the out-of-range 1800 or 2199 published case, and the solved design instant can shift by up to about a minute.",
    "Colour, tone, base, variables and incarnation crosses are not compared."
  ],
  "title": "OpenFate Human Design chart verification summary",
  "publicationKind": "first-party-verification-summary",
  "claimBoundary": "OpenFate performed this comparison using a separately written implementation. This is a publisher-reported result, not independent certification, a public replay kit, or evidence of predictive accuracy. Full execution records and implementation remain private.",
  "receiptSha256": "8f1867ac08d3db86fea0724181857bc070b14d53e47c6d7a068bde6d9315ce1c"
}