SCORECARDARENASDISCOVERYFOUNDATIONSFOR AGENTS

← HOUSING / USVINTAGE d02994e2PENDING

East South Central · 3M

On 4 August 2026 we predicted East South Central house prices would be 0.56% higher by August 2026.

Our stated range was 417.476 to 430.267 — if the method works as intended, the true figure lands inside it about 95% of the time. Verdict due the first FHFA release covering August 2026, when the official figure is published. It has not been graded yet, and nothing on this page can change what was written above.

01 / WHAT WAS LOCKED

FORECAST · INDEX LEVEL423.824

CHANGE FROM BASE+0.56%

95% INTERVAL417.476 … 430.267

BASE — LAST FIGURE PUBLISHED BEFORE THE LOCK421.460 · 2026-05-01

TARGET PERIOD2026-08-01

LOCKED AT — TIMESTAMP ASSIGNED BY THE DATABASE2026-08-04T22:05:03.919495+00:00

02 / WHEN THIS GETS ITS VERDICT

This forecast is graded against the FIRST figure the publisher releases for August 2026 — the number the market actually saw — and never against a later revision. That rule was fixed on 2026-08-03, before this forecast existed.

Headline grade (first_print): the earliest publisher vintage at or after the target period. Available roughly two months after the period ends, on the publisher's schedule, not ours.

Companion grade (settled_t_plus_12): the value as published twelve months after the target period, which measures how much the first figure was revised. Available roughly fourteen months after. Both definitions were committed before any grade existed under either.

INSUFFICIENT DATA

This forecast has not been graded. It cannot be: the period it names has not been published yet. When it is, the verdict appears here — pass or miss — and nothing on this page changes.

03 / PROVENANCE

VINTAGE IDd02994e2-48cb-4ad0-af6e-fa1e723f79d0

ARENAhousing_us

SERIESEAST_SOUTH_CENTRAL

TARGET PERIOD2026-08-01

LOCKED AT2026-08-04T22:05:03.919495+00:00

MODELar12_logdiff

MODEL SPEC1.1

MODEL SELECTION425 observations >= 60

POINT STATISTICmedian

FIT WINDOW425 observations, 1991-01-01 → 2026-05-01

ARCHIVE AS OF2026-08-04

COMMIT SHA63e0fa12edfd75bea8ff26683a080669bd5c9473

RUN MANIFEST9d992102-c049-4495-9a2f-1cfe4ca48d68

PUBLISHER VINTAGES THIS FORECAST WAS BUILT FROM

Every input the reconstruction used, with the time the publisher released it. The forward-lock check reads these back from the record and fails the run if any of them postdates the lock above — that is what makes "locked before the outcome existed" a checked statement rather than a claim.

INPUT	PUBLISHER RELEASE TIME
observations:EAST_SOUTH_CENTRAL@2026-08-04	2026-08-04T00:00:00Z

CONTENT DIGEST

3fc37e5c2837b5d32ebcb0df6c9bf4a91292800fb4a0ad32b55a6f7325d40975

SHA-256 over the payload serialized with object keys sorted lexicographically at every depth and no whitespace, computed when this page was built. It is not stored on the row, and it is not the commitment: the commitment is the append-only row and the lock timestamp the database assigned to it. Fetch the same payload from /v1/vintages and repeat this to check it.

04 / THE LOCKED PAYLOAD, VERBATIM

{
  "as_of": "2026-08-04",
  "model": "ar12_logdiff",
  "interval": {
    "label": "95%",
    "lower": 417.4764760382602,
    "upper": 430.2670627572056,
    "method": "ma_representation",
    "log_variance": 0.00005926819344591706
  },
  "base_value": 421.46,
  "commit_sha": "63e0fa12edfd75bea8ff26683a080669bd5c9473",
  "fit_window": {
    "last_period": "2026-05-01",
    "first_period": "1991-01-01",
    "observations": 425
  },
  "base_period": "2026-05-01",
  "forecast_value": 423.82352119155814,
  "horizon_months": 3,
  "forecast_inputs": [
    {
      "ref": "observations:EAST_SOUTH_CENTRAL@2026-08-04",
      "as_of": "2026-08-04T00:00:00Z"
    }
  ],
  "point_statistic": "median",
  "run_manifest_id": "9d992102-c049-4495-9a2f-1cfe4ca48d68",
  "model_spec_version": "1.1",
  "model_selection_reason": "425 observations >= 60"
}

GET /v1/vintages/d02994e2-48cb-4ad0-af6e-fa1e723f79d0

The One Lab · Toronto · Every number on this site resolves to a primary source or a graded model output. Where it can't, we say so.VINTAGE d02994e2 · WRITE-ONCE · NOT YET GRADED