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Historical signed reports · 2026-Q2
National PDFCook County PDFverify integrity ↗
§ 00 · The audit system

Trust, checked in public.

PropRaven audits its own data against a published rule set and provides a findings ledger and dated report downloads. Use the recorded results and their stated scope to assess the evidence for your market.

Latest recorded run started
Sep 23, 2026
UTC · completion and run type not supplied →
Findings · latest run
163
see them all →
Rules · latest run
54
executed in that run
Columns catalogued
620
Catalog size does not measure field coverage

What these dates tell you

A recorded run start, a completed audit, a generated report and a source record date describe different events. The current run summary does not identify the run type, completion time, data release or source dates.

Latest recorded run started
Last completed full audit
Not identified in the current run summary
Last incremental check
Not identified in the current run summary
Source record dates
Not reported in the current run summary

Historical reports · 2026-Q2

These downloads describe their stated historical scope. They do not establish today's coverage, accuracy or freshness, or a report for your selected market.

§ 01 · Rule categories

Seven ways to examine data quality.

These definitions explain the kinds of checks to look for. They do not establish which rules ran, their cadence or their geographic coverage. Use a dated run or report for those details.

Source agreement

Compare equivalent records with an authoritative source. State how the sample was chosen and what remains unresolved.

Execution, cadence and scope: not supplied by this category guide.

Illustrative example

Two sources disagree on an assessed value because they refer to different assessment years.

View recorded findings →
§ 02 · Reading the evidence

From source records to a scoped report.

This guide shows how evidence relates to a report. It is not a live status diagram or a statement that every step is operating. Select a stage to read what it requires.

drivesexecuteslogscompiledverificationsgraduateWScoped source evidenceRelease · source · observation date01Field definitionsMeaning · grain · applicabilityDefinition02Versioned rulesMethod · thresholds · limitationsDefinition03Recorded runsRun ID · scope · outcomeExecution evidence04FindingsIssue · affected scope · evidenceObserved results05Source comparisonSample design · disagreementsEvidence requirement06Comparable historyPopulation · method · timeEvidence requirement07Reviewed reportScope · dates · limitationsReport evidence
05 · Source comparison

A comparison needs authoritative source evidence, a stated sample design and unresolved cases. This diagram does not assert that a comparison has run. Role: Evidence requirement.

Findings flow
Control / metadata
Conceptual guide · see dated results above
§ 03 · Evaluating a correction

A correction needs measured evidence.

A report of a defect, a code repair and a verified serving result are separate steps. Compare results for the same geography, population, fields and delivery channel.

What to retain

  1. The reported issue, affected data release and source evidence.
  2. The repair, its tests and any unresolved limitations.
  3. A comparison of the original and corrected results on equivalent records.
  4. The serving verification and a correction linked to the original report.

How to read improvement claims

Coverage, populated fields, freshness and source agreement measure different things. A targeted spot check does not estimate statewide accuracy. A trend needs comparable observations with dates, denominators and sample methods.

An overall accuracy trend is not available from the current run summary.

Inspect the evidence for your decision.

Rule counts describe execution, and findings describe detected issues. Neither is an overall accuracy score. Check the report's geography, data release, delivery channel, field definitions and limitations before relying on it.

01
Rules recorded in the latest run
54
02
Findings recorded in the latest run
163
03
Historical report downloads
2026-Q2 · document dates and scope shown above
04
Document verification
Integrity checks establish authentic bytes, not data accuracy
Historical national report · 2026-Q2Historical Cook County report · 2026-Q2Recorded findings →Verify document integrity →