Verify Sources in Seconds, Not Hours
Finding a claim is easy. Finding a credible source that actually confirms it — and checking that the source says what you think it says — is where most people give up. Truthify does it automatically.
The Source Verification Problem
Content on the internet references "studies" without naming them, quotes "experts" without identifying them, and cites statistics without tracing them to an origin. Even well-intentioned content creators often work from secondary sources — they read an article that cited a study they didn't read themselves. By the time a claim reaches a YouTube video or social media post, it may have been paraphrased five times and diverged significantly from the original research. Source verification is the process of tracing claims back to primary evidence. Truthify automates it.
How Source Verification Works in Truthify
When Truthify identifies a factual claim, it doesn't just report what the AI knows. It actively searches external sources in real time:
Google Fact Check API
Searches professional fact-checks from AFP, Reuters, PolitiFact, FullFact, and 100+ other organisations.
Wolfram Alpha
Computes verifiable facts — distances, populations, scientific constants — from authoritative curated data.
PubMed
30+ million biomedical research papers for health and medicine claims.
arXiv
Preprints and papers in physics, mathematics, computer science, and astronomy.
OpenAlex
240 million academic papers across all disciplines for general research claims.
Gemini Web Search
Live web search for current events, recent data, and claims without dedicated database entries.
Every source used in a verdict is linked directly. You can click through to the original study, database entry, or fact-check and read the primary evidence yourself.
What "Verified" Actually Means
Source verification doesn't end with finding a source. Truthify assesses whether the source actually supports the claim as made. A common form of misinformation involves citing a real study but misrepresenting its findings — for example, citing a study that showed a correlation as evidence of causation, or describing a study's preliminary findings as established fact. Truthify's verdict system distinguishes between a claim that is clearly supported by evidence, one that is misleading (source exists but doesn't say what's claimed), and one where sources contradict each other.
Source Credibility Signals
Not all sources carry equal weight. Truthify prioritises evidence from peer-reviewed journals, government databases, and established fact-checking organisations over blog posts, opinion pieces, and secondary reporting. When a claim is supported by three peer-reviewed studies and one blog post, the confidence in the verdict is higher than if the only corroboration came from the blog post alone. The evidence sources shown in each verdict card include the domain name and publication, helping you assess credibility at a glance.
Verify Sources in Text, Not Just Video
Truthify's source verification works equally on pasted text. If you've copied an article, a social media post, a speech transcript, or a research summary, switch to the Paste Text tab and run the same analysis. Every factual claim in the text is extracted and verified against the same ten evidence sources — giving you a complete picture of how well-supported the content's assertions actually are.
Frequently Asked Questions
What is a source verification tool?
A source verification tool helps you check whether claims are backed by credible evidence. Truthify automates this by identifying every factual claim in a piece of content, searching authoritative databases and live web sources for evidence, and presenting a verdict with the specific sources used — so you can trace claims back to their origin.
How do I verify if a source is credible?
Credibility signals include: the source is a peer-reviewed journal, a government agency, or a recognised expert organisation; the content has an author with relevant credentials; the claim is corroborated by multiple independent sources; and the source is transparent about its methods. Truthify prioritises high-credibility sources and shows you which source backed each verdict.
Can Truthify verify sources in academic papers?
Truthify can analyse claims in academic text pasted into the text mode. It will search PubMed, arXiv, OpenAlex, and other databases for corroborating evidence. However, for deep academic literature review — checking citation chains, accessing paywalled papers, or assessing methodological quality — specialist tools like Elicit or Consensus are better suited.
What if a claim cites a source I can't access?
Truthify searches publicly accessible databases and open-access content. Paywalled studies are not directly retrieved, but Truthify can often find the abstract, related open-access versions, or corroborating evidence from other accessible sources.
Can I verify sources in any language?
Truthify currently works best with English-language content. Captions and text in other languages may produce lower accuracy results as the claim extraction and evidence retrieval pipeline is optimised for English.
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