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Verify our record

A forecast publication is only worth reading if its history cannot be quietly edited. This page states the guarantees Signal21 makes about its own record, and how to check them.

What we guarantee

Every published outlook lives at a permanent address of the form /outlook/YYYY-MM-DD and is archived exactly as published, including the forecasts that turn out wrong. Publication timestamps are recorded once and never advanced to fake freshness; when the view has not changed, the page says so instead of pretending otherwise.

Mistakes are corrected in the open: a correction is appended as a visible, dated entry on the page it amends. The original text is never silently rewritten, the original publication time never changes, and our RSS entries keep their identifiers, so a feed reader's copy stays comparable with ours. The full rules are in the editorial policy.

How to check us today

The history page lists every archived day since the first forecast on 20 July 2026; nothing is delisted. Pick any date, save the page or note its contents, and compare it again weeks later: it must be unchanged except for visibly appended corrections. Subscribing to the RSS feed gives you an independent, timestamped copy of each publication as it appeared on day one. How the three horizon views are produced is documented on the methodology page.

What this is not

This page makes no claim about forecast accuracy. Our views are model output and are sometimes wrong; the archive exists precisely so that anyone can judge the record for themselves. We will not publish an accuracy figure unless its measurement period, scoring method and every underlying forecast are published with it.

What is coming

Today these guarantees are editorial policy you can hold us to, enforced by our publishing tools rather than provable from the outside. We intend to open source the site and its complete, version-controlled archive history, which will make the append-only record independently auditable. This page will be updated when that happens.