Projects / PRJ-AU-00072

DIT Methane Intervention Evidence

Rumin8·Australia·Beef·Scope 3·PRJ-AU-00072
Evidence readiness
43%
Open gaps
3
Review status
In review
Artifact status
Draft
Verification
Not issued
OverviewEvidenceAssessmentReviewArtifactActivity
Reliance Artifact
RA-AU-000184
READY FOR ISSUE
Awaiting issuance signaturedigestsha256:e4b7a0912cd83f6415…
Open verification view
Summary
Claim
42.7 tCO₂e modeled reduction
Boundary
DIT Trial / Product Lot 443 / Cohort 18
Jurisdiction
Australia
Program
Agricultural climate evidence profile v0.1
Evidence & review
Accepted evidence
18 items
Critical gaps
0
Documented limitations
2
Human review decisions
2
Methodology determinations
1
Integrity
Receipt chain valid
Artifact digest valid
Evidence graph complete
Signature pending issuance

Evidence lineage

Review decisions

AcceptedAU.METHANE.MEASUREMENT.PROVENANCE
RV-201

Calibration certificate CAL-204 matches instrument GF-4412 and is within the calibration validity window for the measurement date.

Emma Clarke·7 Aug 2026, 09:44 UTC·recorded
Accepted with limitationAU.CLAIM.BOUNDARY
RV-204

Boundary is well defined at lot and cohort level. Twelve animals required a probabilistic join; documented as limitation LIM-01.

Emma Clarke·7 Aug 2026, 09:47 UTC·recorded
Methodology determinationAU.MODEL.EXECUTION.BOUNDARY
DET-08

Model run MR-202 executes within the approved AU methane intervention boundary for spot-measured cohorts.

AgEvidence Methodology Board·7 Aug 2026, 09:49 UTC·recorded

Reliance limitations

Cohort identity joined probabilistically for 12 animalsLIM-01

Twelve animals in cohort C-18 were matched across the DIT feedlot controller and processor manifest with a 0.94 confidence join rather than a deterministic identifier.

Modeled reduction, not directly measuredLIM-02

The claim quantity is produced by model run MR-202 (dit.methane.reduction v2.4.1) using spot measurement MS-828. It is a modeled estimate, not a continuous measured reduction.

Receipt chain

Evidence ingestion receipt
sha256:9f21ab77c40e13d5b8…
Projection receipt
sha256:462cc8409f78e1b3d5…
Assessment receipt
sha256:5ee1c3b708aa47d993…
Review decision receipt
sha256:11ad6bb90e2c48f7a0…
Artifact assembly receipt
sha256:0af31c7e55b249d08e…

Machine-readable artifact

agevidence.reliance_artifact.v1
{
  "object": "reliance_artifact",
  "id": "RA-AU-000184",
  "schema": "agevidence.reliance_artifact.v1",
  "status": "ready_for_issue",
  "issuer": {
    "name": "AgEvidence",
    "org_id": "org_agevidence",
    "jurisdiction": "AU"
  },
  "subject": {
    "organization": "DIT AgTech",
    "project_id": "PRJ-AU-00041"
  },
  "claim": {
    "quantity": 42.7,
    "unit": "tCO2e",
    "basis": "modeled_reduction",
    "model_run_id": "MR-202"
  },
  "boundary": {
    "trial": "DIT Trial",
    "product_lot_id": "PL-443",
    "cohort_id": "C-18",
    "period": {
      "start": "2026-06-12",
      "end": "2026-07-19"
    }
  },
  "program": {
    "jurisdiction": "AU",
    "profile": "agricultural_climate_evidence",
    "version": "0.1"
  },
  "evidence": {
    "accepted_count": 18,
    "critical_gaps": 0,
    "graph_root": "sha256:7c04e881b56d9a2f31be440cd7a9f0e2265b7311a8d0f4c6ee9310bb7a55e112",
    "items": [
      "PL-443",
      "FR-201",
      "C-18",
      "EVT-99231",
      "MS-828",
      "MR-202",
      "SM-194"
    ]
  },
  "review": {
    "decisions": [
      {
        "id": "RV-201",
        "requirement": "AU.METHANE.MEASUREMENT.PROVENANCE",
        "outcome": "accepted"
      },
      {
        "id": "RV-204",
        "requirement": "AU.CLAIM.BOUNDARY",
        "outcome": "accepted_with_limitation"
      }
    ],
    "determinations": [
      {
        "id": "DET-08",
        "requirement": "AU.MODEL.EXECUTION.BOUNDARY"
      }
    ]
  },
  "limitations": [
    {
      "id": "LIM-01",
      "code": "cohort_identity_probabilistic",
      "affected_units": 12
    },
    {
      "id": "LIM-02",
      "code": "modeled_not_measured"
    }
  ],
  "integrity": {
    "canonicalization": "agevidence-jcs-2026",
    "artifact_digest": "sha256:e4b7a0912cd83f6415aa27de90bb35c1f8027ae64d139b0cc7521ea83f4d6610",
    "receipt_root": "sha256:0af31c7e55b249d08e7c1ab6390fd4471c2e88a05d63b7ff9014ce2a7b8d3355",
    "signature": null
  }
}