What data can I explore?
Open the indicator registry to see which series are production-verified, still screening, or intentionally blocked by methodology checks.
Browse indicators →Choose the right path
Current indicator coverage and revision evidence answer different questions.
Did an official published value change?
Compare the same reference-year value across archived releases. A revision is a change in published data, not real-world growth between release dates.
Browse revision evidence →Why should I trust the comparison?
Check provenance, comparability gates and machine-readable evidence before relying on a result.
Read the methodology →What changed in the archived population data?
The current verified set compares 2023 population values between the 28 Jan 2025 and 2 Jul 2025 World Bank WDI archive releases. A revision is a change in a published historical value — not population growth.
Germany +621,923 (+0.75%)
Germany's published 2023 population value changed from 83,280,000 to 83,901,923 between the two archived releases.
Verify Germany →United States +1,891,336
The United States has the largest absolute revision in the current verified comparison set.
Compare all countries →10 of 15 unchanged
Ten country values did not change between these two vintages. Null results remain visible because they are evidence too.
See revised and unchanged values →From answer to evidence in one click
15
Country comparisons
Browse the current verified population-revision set and sort countries by revision magnitude.
Open comparison table →5
Observed revisions
Five of the 15 verified country values changed across the selected WDI vintages; ten remained unchanged.
Explore notable changes →3
Evidence layers
Each REAL comparison connects a readable page to provenance plus machine-readable JSON/CSV exports.
Understand the method →Why the evidence is trustworthy
Exact publication vintages
We preserve source identity and release dates rather than silently replacing historical values with the latest observation.
Sources & provenance →Unsafe comparisons are rejected
If entity, unit or methodology is not safely comparable, the engine refuses to publish a revision claim.
Read the comparability rules →Built for people and AI
Stable HTML evidence links concise findings to underlying values, source context and structured exports.
Browse verified evidence →Growing the discovery engine carefully
Population revision is the first verified evidence family. The indicator registry makes the expansion boundary explicit: production-verified series are separated from screening candidates until provenance and methodology gates are satisfied.