Current U.S. HSI-C research snapshot

0.6794

Under the current research model, qualifying household-controlled productive capacity equals approximately 68% of the remaining needs of the modeled U.S. household benchmark.

0.3206 remaining to HSI 1.001.00 — Sovereignty parity
Evidence
Scenario · Scenario only
Confidence
D Scenario or vendor-reported inputs dominate
Snapshot published
Methodology
v0.1
Reading this index

HSI-C (Household Sovereignty Capacity — modeled) is a modeled capacity measure: what qualifying household-controlled infrastructure could produce, relative to the household needs still purchased from the economy. Maintained continuously. Updated as validated inputs change. HSI is an independent research instrument. It is not a government statistic or a credit product.

Also published

Other values in this snapshot.

Every value below is taken directly from the published snapshot, with the evidence class the engine assigned to it.

HSI-C weighted P10

ScenarioConfidence DScenario only
0.512ratio
As of

HSI-C weighted P90

ScenarioConfidence DScenario only
1.1172ratio
As of

Reading the instrument

What is an HSI snapshot?

An HSI snapshot freezes the sources, assumptions, methodology and calculation used to produce an index value at a specific state of the research. When a validated underlying input changes, the engine produces a new snapshot and compares it with the previous state.

Help build the real-world household dataset

Help us measure what happens in real homes

HSI-C models what household-controlled productive infrastructure could provide. We are building the next dataset from households willing to share real operating results.

Participants will be able to see how their household compares with the broader HSI research model and what currently stands between them and sovereignty parity.

Enrollment is the first step. The household profile, productive stack and operating-observation stages open as each is built, and a personalized profile is not available yet.

Join the household research panel

Inputs

What entered this snapshot?

Each family below shows the input the engine actually used and the evidence class it carries. Modeled and scenario inputs are shown alongside observed ones, because the difference between them is the point.

Household population

Who the modeled U.S. household benchmark represents.

U.S. household archetype distribution

U.S. Census Bureau ACS PUMS

ObservedConfidence A

Defines representative household structure and characteristics.

Observation period 2024

Current

View source details
Source published
Oct 1, 2025
Retrieved by HSI
Aug 23, 2026
Evidence tier
Tier 1 · Authoritative public statistics
Confidence
AIndependent, reproducible evidence
Licensing
ACS PUMS is public U.S. statistical microdata. Research-beta redistribution of derived aggregates only; no microdata rows are published.
Feeds
hsi_c
Open the public source

Household spending

The needs the household still purchases from the economy.

BLS Consumer Expenditure size of consumer unit

U.S. Bureau of Labor Statistics

ObservedConfidence A

Estimates the needs the household still purchases from the economy.

Observation period 2024

Current

View source details
Source published
Sep 1, 2025
Retrieved by HSI
Aug 24, 2026
Evidence tier
Tier 1 · Authoritative public statistics
Confidence
AIndependent, reproducible evidence
Licensing
BLS CE LABSTAT CX public time series. Housing is net of electricity because electricity is a separate HSI need category.
Feeds
hsi_c
Open the public source

Evidence mix

How much of this is observed?

Every input carries an evidence class, and calculated values inherit the weakness of their inputs. A scenario input never becomes observed by passing through a formula. How evidence classes are defined.

Source inputs

  • Observed2 of 2 · 100%

Standing assumptions

  • Scenario1 of 1 · 100%

Assumptions

What remains conditional.

Every temporary assumption carries a reason for existing and the condition that would retire it. Assumptions are meant to expire.

Declared test-scope household production profile

ScenarioConfidence D
SCI 1.00 · Profile declared-test-scope-production-v1ratio
Why it is here
PUMS does not observe energy, capital, task capacity, SCI, or EA. The profile is explicit scenario. SCI=1.00 is labeled scenario, not an invented EA/APWB threshold.
What would replace it
Replace when observed energy, capital, task, SCI, and an approved EA/APWB threshold exist.

Confidence & coverage

How confident are we in this snapshot?

Technical uncertainty record →

Source quality

This snapshot draws on 2 registered sources, all of which carry observed, measured or derived evidence.

Note
HSI-C uses a scenario production profile on an observed household frame and observed CE need.
Primary
D — Scenario or vendor-reported inputs dominate

Coverage

Numeric weight
132,737,145
Excluded weight
None excluded from this snapshot
Submitted weight
132,737,145
Occupied households
~1.3 million represented U.S. households
Independent second machine rehash
No

Assumptions

1 assumption is still standing in this snapshot. 1 rests on proxy or scenario evidence and carries a stated replacement condition.

What would improve this estimate?

  • Declared test-scope household production profile Replace when observed energy, capital, task, SCI, and an approved EA/APWB threshold exist.

Source ledger

Sources.

The complete list of sources this snapshot consumed, with what each one describes, when its publisher released it, and when HSI retrieved it.

DS-HH-001Tier 1 · Authoritative public statistics

U.S. household archetype distribution

U.S. Census Bureau ACS PUMS

Open public source
ObservedConfidence ACurrent
Observation period
2024
Source published
Oct 1, 2025
Retrieved by HSI
Aug 23, 2026
Licensing
ACS PUMS is public U.S. statistical microdata. Research-beta redistribution of derived aggregates only; no microdata rows are published.
DS-RECR-001Tier 1 · Authoritative public statistics

BLS Consumer Expenditure size of consumer unit

U.S. Bureau of Labor Statistics

Open public source
ObservedConfidence ACurrent
Observation period
2024
Source published
Sep 1, 2025
Retrieved by HSI
Aug 24, 2026
Licensing
BLS CE LABSTAT CX public time series. Housing is net of electricity because electricity is a separate HSI need category.

Integrity

Snapshot integrity

This snapshot preserves cryptographic fingerprints of its source artifacts and compiled output so its exact calculation lineage can be reproduced and audited.

Verified

A compiled output fingerprint is recorded for this snapshot, along with raw artifact fingerprints for 2 of 2 sources. The fingerprints themselves are preserved in technical provenance rather than printed across this page.

View technical provenance

Advanced

Technical provenance.

Complete machine truth for this snapshot: identifiers, cryptographic fingerprints, versions, timestamps, evidence classifications and the machine-readable manifest. Nothing here is paywalled. Definitions and terminology.

View technical provenance

Snapshot record

Snapshot ID
51000000-0000-0000-0000-000000000001
Snapshot code
research-beta-2024-acs-ce-scenario-production-v1
Publication channel
research_beta
Methodology version
v0.1
Output SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
As-of timestamp
Historical knowledge cutoff
Published at
Release notes
Research-beta snapshot. Occupied ACS 2024 1-year PUMS housing (50 states + DC) with official BLS CE 2024 size-of-CU need. Energy, capital, SCI, and EA are an explicit scenario production profile. Not an official HSI release. HSI-R is unavailable. Independent second-machine rehash of csv_hus.zip is false.

Metric records

hsi_c · Household Sovereignty Index Capacity (weighted median)

Availability
scenario only
Classification
Scenario
Confidence
D
Qualification status
not applicable
Unit
ratio
As of
Code commit SHA
3ed7b2224a820d97e878395bc8429b64d300ffe0
Assembled
Yes
Output SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
Compiler container digest
local-mini-uv-cpython-3.12-national-research-beta
Calculation run ID
41000000-0000-0000-0000-000000000002
Calculation result ID
6
Input manifest SHA-256
b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465
Output manifest SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
View JSON — hsi_c
{
  "metric_code": "hsi_c",
  "metric_label": "Household Sovereignty Index Capacity (weighted median)",
  "value_numeric": 0.6794,
  "value_text": null,
  "value_json": null,
  "unit_code": "ratio",
  "availability": "scenario_only",
  "classification": "scenario",
  "confidence": "d",
  "as_of_timestamp": "2026-08-24T00:00:00+00:00",
  "uncertainty": {},
  "qualification_status": "not_applicable",
  "provenance": {
    "code_sha": "3ed7b2224a820d97e878395bc8429b64d300ffe0",
    "assembled": true,
    "output_hash": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af",
    "container_digest": "local-mini-uv-cpython-3.12-national-research-beta",
    "calculation_run_id": "41000000-0000-0000-0000-000000000002",
    "calculation_result_id": 6,
    "input_manifest_sha256": "b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465",
    "output_manifest_sha256": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
  }
}

hsi_r · Household Sovereignty Index Realized

Availability
unavailable
Classification
Unobserved
Confidence
U
Qualification status
not applicable
Unit
As of
Code commit SHA
3ed7b2224a820d97e878395bc8429b64d300ffe0
Assembled
Yes
Output SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
Compiler container digest
local-mini-uv-cpython-3.12-national-research-beta
Calculation run ID
41000000-0000-0000-0000-000000000002
Calculation result ID
7
Input manifest SHA-256
b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465
Output manifest SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
View JSON — hsi_r
{
  "metric_code": "hsi_r",
  "metric_label": "Household Sovereignty Index Realized",
  "value_numeric": null,
  "value_text": null,
  "value_json": null,
  "unit_code": null,
  "availability": "unavailable",
  "classification": "unobserved",
  "confidence": "u",
  "as_of_timestamp": "2026-08-24T00:00:00+00:00",
  "uncertainty": {},
  "qualification_status": "not_applicable",
  "provenance": {
    "code_sha": "3ed7b2224a820d97e878395bc8429b64d300ffe0",
    "assembled": true,
    "output_hash": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af",
    "container_digest": "local-mini-uv-cpython-3.12-national-research-beta",
    "calculation_run_id": "41000000-0000-0000-0000-000000000002",
    "calculation_result_id": 7,
    "input_manifest_sha256": "b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465",
    "output_manifest_sha256": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
  }
}

hsi_c_p10 · HSI-C weighted P10

Availability
scenario only
Classification
Scenario
Confidence
D
Qualification status
not applicable
Unit
ratio
As of
Code commit SHA
3ed7b2224a820d97e878395bc8429b64d300ffe0
Assembled
Yes
Output SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
Compiler container digest
local-mini-uv-cpython-3.12-national-research-beta
Calculation run ID
41000000-0000-0000-0000-000000000002
Calculation result ID
8
Input manifest SHA-256
b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465
Output manifest SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
View JSON — hsi_c_p10
{
  "metric_code": "hsi_c_p10",
  "metric_label": "HSI-C weighted P10",
  "value_numeric": 0.512,
  "value_text": null,
  "value_json": null,
  "unit_code": "ratio",
  "availability": "scenario_only",
  "classification": "scenario",
  "confidence": "d",
  "as_of_timestamp": "2026-08-24T00:00:00+00:00",
  "uncertainty": {},
  "qualification_status": "not_applicable",
  "provenance": {
    "code_sha": "3ed7b2224a820d97e878395bc8429b64d300ffe0",
    "assembled": true,
    "output_hash": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af",
    "container_digest": "local-mini-uv-cpython-3.12-national-research-beta",
    "calculation_run_id": "41000000-0000-0000-0000-000000000002",
    "calculation_result_id": 8,
    "input_manifest_sha256": "b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465",
    "output_manifest_sha256": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
  }
}

hsi_c_p90 · HSI-C weighted P90

Availability
scenario only
Classification
Scenario
Confidence
D
Qualification status
not applicable
Unit
ratio
As of
Code commit SHA
3ed7b2224a820d97e878395bc8429b64d300ffe0
Assembled
Yes
Output SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
Compiler container digest
local-mini-uv-cpython-3.12-national-research-beta
Calculation run ID
41000000-0000-0000-0000-000000000002
Calculation result ID
9
Input manifest SHA-256
b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465
Output manifest SHA-256
c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af
View JSON — hsi_c_p90
{
  "metric_code": "hsi_c_p90",
  "metric_label": "HSI-C weighted P90",
  "value_numeric": 1.1172,
  "value_text": null,
  "value_json": null,
  "unit_code": "ratio",
  "availability": "scenario_only",
  "classification": "scenario",
  "confidence": "d",
  "as_of_timestamp": "2026-08-24T00:00:00+00:00",
  "uncertainty": {},
  "qualification_status": "not_applicable",
  "provenance": {
    "code_sha": "3ed7b2224a820d97e878395bc8429b64d300ffe0",
    "assembled": true,
    "output_hash": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af",
    "container_digest": "local-mini-uv-cpython-3.12-national-research-beta",
    "calculation_run_id": "41000000-0000-0000-0000-000000000002",
    "calculation_result_id": 9,
    "input_manifest_sha256": "b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465",
    "output_manifest_sha256": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
  }
}

Source artifacts

DS-HH-001 · U.S. household archetype distribution

Provider
U.S. Census Bureau ACS PUMS
Source tier
Tier 1 · Authoritative public statistics
Classification
Observed
Confidence
A
Freshness
eligible
Carry-forward used
No
Observation period start
Jan 1, 2024, 12:00 AM UTC
Observation period end
Dec 31, 2024, 12:00 AM UTC
Source publication timestamp
Oct 1, 2025, 12:00 AM UTC
HSI retrieval timestamp
Aug 23, 2026, 12:00 AM UTC
Raw payload SHA-256
8281008e53de98f0ef81e7a2ee5a8725991dda1ecfd2713ead73246425e515d0
License code
Not supplied
License disclosure
ACS PUMS is public U.S. statistical microdata. Research-beta redistribution of derived aggregates only; no microdata rows are published.
Constituent codes
hsi_c

DS-RECR-001 · BLS Consumer Expenditure size of consumer unit

Provider
U.S. Bureau of Labor Statistics
Source tier
Tier 1 · Authoritative public statistics
Classification
Observed
Confidence
A
Freshness
eligible
Carry-forward used
No
Observation period start
Jan 1, 2024, 12:00 AM UTC
Observation period end
Dec 31, 2024, 12:00 AM UTC
Source publication timestamp
Sep 1, 2025, 12:00 AM UTC
HSI retrieval timestamp
Aug 24, 2026, 12:00 AM UTC
Raw payload SHA-256
9355c74444d04075f6575b9b2159331e1e3ad5ce86c9c7c348280abd8e0ef637
License code
Not supplied
License disclosure
BLS CE LABSTAT CX public time series. Housing is net of electricity because electricity is a separate HSI need category.
Constituent codes
hsi_c

Assumption records

declared-test-scope-production-v1 · Declared test-scope household production profile

Classification
Scenario
Confidence
D
Unit
ratio
Expires
No expiry
Raw value
{ "sci": "1.00", "profile": "declared-test-scope-production-v1" }

Snapshot summaries

View JSON — confidence and completeness summaries
Confidence summary
{
  "note": "HSI-C uses a scenario production profile on an observed household frame and observed CE need.",
  "primary": "d"
}
Completeness summary
{
  "numeric_weight": "132737145",
  "excluded_weight": "0",
  "submitted_weight": "132737145",
  "occupied_households": 1348408,
  "independent_second_machine_rehash": false
}

Machine-readable manifest

Download snapshot manifest (JSON)

View JSON — complete snapshot manifest
{
  "snapshot": {
    "id": "51000000-0000-0000-0000-000000000001",
    "channel": "research_beta",
    "snapshot_code": "research-beta-2024-acs-ce-scenario-production-v1",
    "methodology_version": "0.1",
    "as_of_timestamp": "2026-08-24T00:00:00+00:00",
    "historical_knowledge_cutoff": "2026-08-24T00:00:00+00:00",
    "published_at": "2026-08-24T03:32:37.92149+00:00",
    "confidence_summary": {
      "note": "HSI-C uses a scenario production profile on an observed household frame and observed CE need.",
      "primary": "d"
    },
    "completeness_summary": {
      "numeric_weight": "132737145",
      "excluded_weight": "0",
      "submitted_weight": "132737145",
      "occupied_households": 1348408,
      "independent_second_machine_rehash": false
    },
    "release_notes": "Research-beta snapshot. Occupied ACS 2024 1-year PUMS housing (50 states + DC) with official BLS CE 2024 size-of-CU need. Energy, capital, SCI, and EA are an explicit scenario production profile. Not an official HSI release. HSI-R is unavailable. Independent second-machine rehash of csv_hus.zip is false.",
    "output_hash": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
  },
  "metrics": [
    {
      "metric_code": "hsi_c",
      "metric_label": "Household Sovereignty Index Capacity (weighted median)",
      "value_numeric": 0.6794,
      "value_text": null,
      "value_json": null,
      "unit_code": "ratio",
      "availability": "scenario_only",
      "classification": "scenario",
      "confidence": "d",
      "as_of_timestamp": "2026-08-24T00:00:00+00:00",
      "uncertainty": {},
      "qualification_status": "not_applicable",
      "provenance": {
        "code_sha": "3ed7b2224a820d97e878395bc8429b64d300ffe0",
        "assembled": true,
        "output_hash": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af",
        "container_digest": "local-mini-uv-cpython-3.12-national-research-beta",
        "calculation_run_id": "41000000-0000-0000-0000-000000000002",
        "calculation_result_id": 6,
        "input_manifest_sha256": "b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465",
        "output_manifest_sha256": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
      }
    },
    {
      "metric_code": "hsi_r",
      "metric_label": "Household Sovereignty Index Realized",
      "value_numeric": null,
      "value_text": null,
      "value_json": null,
      "unit_code": null,
      "availability": "unavailable",
      "classification": "unobserved",
      "confidence": "u",
      "as_of_timestamp": "2026-08-24T00:00:00+00:00",
      "uncertainty": {},
      "qualification_status": "not_applicable",
      "provenance": {
        "code_sha": "3ed7b2224a820d97e878395bc8429b64d300ffe0",
        "assembled": true,
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        "container_digest": "local-mini-uv-cpython-3.12-national-research-beta",
        "calculation_run_id": "41000000-0000-0000-0000-000000000002",
        "calculation_result_id": 7,
        "input_manifest_sha256": "b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465",
        "output_manifest_sha256": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
      }
    },
    {
      "metric_code": "hsi_c_p10",
      "metric_label": "HSI-C weighted P10",
      "value_numeric": 0.512,
      "value_text": null,
      "value_json": null,
      "unit_code": "ratio",
      "availability": "scenario_only",
      "classification": "scenario",
      "confidence": "d",
      "as_of_timestamp": "2026-08-24T00:00:00+00:00",
      "uncertainty": {},
      "qualification_status": "not_applicable",
      "provenance": {
        "code_sha": "3ed7b2224a820d97e878395bc8429b64d300ffe0",
        "assembled": true,
        "output_hash": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af",
        "container_digest": "local-mini-uv-cpython-3.12-national-research-beta",
        "calculation_run_id": "41000000-0000-0000-0000-000000000002",
        "calculation_result_id": 8,
        "input_manifest_sha256": "b2c7f58fe559e08b217bd1da27850cb140b6fe4579756847bf995cf32121f465",
        "output_manifest_sha256": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
      }
    },
    {
      "metric_code": "hsi_c_p90",
      "metric_label": "HSI-C weighted P90",
      "value_numeric": 1.1172,
      "value_text": null,
      "value_json": null,
      "unit_code": "ratio",
      "availability": "scenario_only",
      "classification": "scenario",
      "confidence": "d",
      "as_of_timestamp": "2026-08-24T00:00:00+00:00",
      "uncertainty": {},
      "qualification_status": "not_applicable",
      "provenance": {
        "code_sha": "3ed7b2224a820d97e878395bc8429b64d300ffe0",
        "assembled": true,
        "output_hash": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af",
        "container_digest": "local-mini-uv-cpython-3.12-national-research-beta",
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        "calculation_result_id": 9,
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        "output_manifest_sha256": "c4c9dbe8f472c0028b2cd33522e0337ea1375abd3406f3af92c921ace66ce4af"
      }
    }
  ],
  "sources": [
    {
      "source_code": "DS-HH-001",
      "source_name": "U.S. household archetype distribution",
      "provider": "U.S. Census Bureau ACS PUMS",
      "public_url": "https://www.census.gov/programs-surveys/acs/microdata.html",
      "source_tier": "tier_1_authoritative_public",
      "classification": "observed",
      "confidence": "a",
      "observation_period_start": "2024-01-01T00:00:00+00:00",
      "observation_period_end": "2024-12-31T00:00:00+00:00",
      "publication_timestamp": "2025-10-01T00:00:00+00:00",
      "retrieval_timestamp": "2026-08-23T00:00:00+00:00",
      "freshness": "eligible",
      "fallback_used": false,
      "raw_payload_sha256": "8281008e53de98f0ef81e7a2ee5a8725991dda1ecfd2713ead73246425e515d0",
      "license_code": null,
      "license_disclosure": "ACS PUMS is public U.S. statistical microdata. Research-beta redistribution of derived aggregates only; no microdata rows are published.",
      "constituent_codes": [
        "hsi_c"
      ]
    },
    {
      "source_code": "DS-RECR-001",
      "source_name": "BLS Consumer Expenditure size of consumer unit",
      "provider": "U.S. Bureau of Labor Statistics",
      "public_url": "https://www.bls.gov/cex/",
      "source_tier": "tier_1_authoritative_public",
      "classification": "observed",
      "confidence": "a",
      "observation_period_start": "2024-01-01T00:00:00+00:00",
      "observation_period_end": "2024-12-31T00:00:00+00:00",
      "publication_timestamp": "2025-09-01T00:00:00+00:00",
      "retrieval_timestamp": "2026-08-24T00:00:00+00:00",
      "freshness": "eligible",
      "fallback_used": false,
      "raw_payload_sha256": "9355c74444d04075f6575b9b2159331e1e3ad5ce86c9c7c348280abd8e0ef637",
      "license_code": null,
      "license_disclosure": "BLS CE LABSTAT CX public time series. Housing is net of electricity because electricity is a separate HSI need category.",
      "constituent_codes": [
        "hsi_c"
      ]
    }
  ],
  "assumptions": [
    {
      "assumption_code": "declared-test-scope-production-v1",
      "assumption_name": "Declared test-scope household production profile",
      "value": {
        "sci": "1.00",
        "profile": "declared-test-scope-production-v1"
      },
      "unit_code": "ratio",
      "classification": "scenario",
      "confidence": "d",
      "rationale": "PUMS does not observe energy, capital, task capacity, SCI, or EA. The profile is explicit scenario. SCI=1.00 is labeled scenario, not an invented EA/APWB threshold.",
      "replacement_condition": "Replace when observed energy, capital, task, SCI, and an approved EA/APWB threshold exist.",
      "expires_at": null
    }
  ]
}