Editorial Policy

This page explains how Prediction Tape researches, sources, dates and corrects what it publishes. Everything on the site is published by the Prediction Tape editorial team. We cover prediction markets independently: no market, exchange or broker owns us, pays us or reviews our pages before they go live.

What we publish

Live market pages show prices pulled automatically from Polymarket and Kalshi. We don’t type in or adjust prices by hand; how they’re collected and calculated is set out in our methodology.
Guides, platform profiles and comparisons explain how platforms work, what they charge and who can use them.
Legal guides summarise the state of the law and the court cases around prediction markets in the US and elsewhere.
Data pages publish dated snapshots built from the same feeds, with a note on how each figure was produced.

How we research

Primary sources first. For fees, rules, eligibility and APIs we go to the platform’s own help centre, fee schedule, market rules or developer documentation. For regulation and court cases we go to court dockets, regulator releases and official statements where we can open them.
Reporting second. Where a primary source isn’t available, we use established news outlets and trade publications, and we say who reported it.
Numbers come from a source or a feed. Every figure on the site is either taken from a named source or calculated from the live data feeds. We don’t estimate figures we can’t source, and when we can’t verify something, we leave it out and say so.
No invented experts. Pages are bylined to the editorial team. We don’t publish made-up names, credentials or reviews.

How we date things

Prediction markets change week to week, so we date the facts most likely to change. Pages carry a “checked” date for fees, availability and rules (for example, “checked October 2026”), and each page shows when it was last updated. Legal guides list their sources with the date of each one. Live tables show when the data was last refreshed.

Legal topics

Our legal guides are summaries, not legal advice, and they say so on the page. Because many of the cases are still being fought:

We say whether a ruling is preliminary, under appeal or final, and we don’t present a contested ruling as settled law.
We link the court record, regulator statement or report behind each claim, with its date.
We attribute disputed facts to whoever reported them, and when sources disagree, we say so rather than pick one silently.
We recheck the state guides when there’s a major ruling, and we date every update.

Independence and money

We don’t sell placements, rankings, reviews or sponsored pages. No platform can pay to be listed, ranked higher or covered more kindly, and none sees our pages before they’re published. We currently have no affiliate relationships. If that changes, the disclosure will sit next to each affected link; see how we make money.

Risk and responsibility

Prediction markets involve real money, and you can lose what you put in. We describe how markets work and what they cost; we don’t tell anyone what to trade, and nothing on the site is financial, investment, legal or tax advice. Our guides note age limits and where platforms aren’t available. See our disclaimer.

Corrections

If we get something wrong, we fix it, update the page date and record significant corrections in our corrections log. To report an error, email [email protected].