Confident narration isn't evidence
A calm voice over sweeping music reads as authority. Nothing about the format tells you whether a date, a motive, or a death toll is contested.
Academic · Archival · Fact-checked sources only
Fact-check history
on YouTube.
Paste a history video. Claimifi.biz finds the historical claims it makes and checks the most significant ones against 32 academic, archival, and fact-checking sources.
Popular checks:
The Fall of the Roman Empire
Who really built the pyramids
The truth about the Dark Ages
32 vetted sources
Every verdict cited
Free accountFree to use
32
Vetted sources
4
Verdict levels
5
Claims checked free
~60s
Per analysis
History is the most watched
and least checked
Documentary-style history is one of YouTube's biggest categories. Almost none of it carries citations.
Complexity gets flattened
Centuries of overlapping causes get compressed into one tidy story. What historians actively argue about arrives as settled fact.
Checking it is slow
Verifying one claim properly means finding the scholarship and reading it. Nobody does that for a video they watched over lunch.
What you get back
Each claim checked is separated out, graded, explained, and linked to the domains that back it.
Verdict breakdown
4
Supported
2
Mixed
1
Unsupported
1
Insufficient
2 of 8 claims checked
1
Rome fell in a single year when the city was sacked in 476 AD.
Unsupported
476 marks the deposition of Romulus Augustulus, not a collapse. The Eastern Empire continued for another thousand years, and scholarship treats the western decline as a gradual transformation across the fourth to sixth centuries.
2
Lead pipes poisoned the Roman population and caused the decline.
Mixed
Lead exposure in Roman water systems is well documented, but the causal leap to imperial collapse is not supported. Mineral scaling inside the pipes limited leaching, and the effect sits far below what a civilisational explanation would require.
How it works
Three steps between a video and a sourced verdict on everything it claims.
Read the transcript
Claimifi.biz retrieves the video's caption track and reads it end to end — no watching, no skimming, no relying on the title.
Isolate each claim
Names, dates, causes, outcomes, and casualty figures are separated into distinct, checkable statements instead of one vague impression.
Check and cite
Each claim checked gets one of four verdicts, an explanation of the scholarly position, and the specific domains that support it.
What this is, and isn't
A fact-checker that overstates itself is just another confident voice.
What it does well
- Surfaces the specific claims in a video that are worth checking
- Flags where popular narratives diverge from current scholarship
- Points you at the domains where the real answer lives
- Separates contested interpretation from settled record
- Turns an hour of manual checking into about a minute
What it can't do
- Replace reading the actual scholarship on a question
- Settle debates historians themselves have not settled
- Guarantee a verdict is right — it can be wrong or incomplete
- Analyse videos with no captions from their content
- Serve as a citation in academic work
The 32 trusted sources
Analysis is restricted to these domains. No blogs, no content farms, no anonymous encyclopaedias.
Historical associations
- historians.org
- oah.org
- history.ac.uk
- iamhist.net
Journals & databases
- jstor.org
- muse.jhu.edu
- academic.oup.com
- onlinelibrary.wiley.com
Archives & libraries
- archives.gov
- docsteach.org
- loc.gov
- dp.la
- archive.org
Film & media archives
- britishpathe.com
- aparchive.com
- americanarchive.org
- iwm.org.uk
- bfi.org.uk
University presses
- cambridge.org
- hup.harvard.edu
- yalebooks.yale.edu
- press.princeton.edu
- press.uchicago.edu
- ucpress.edu
- cup.columbia.edu
- iupress.org
- brill.com
Publishers & fact-checkers
- taylorandfrancis.com
- routledge.com
- factcheck.org
- politifact.com
- snopes.com
Questions
What Claimifi.biz does, what it doesn't, and where it falls short.
How does Claimifi.biz fact-check YouTube history videos?
It retrieves the video's caption track, extracts the distinct historical claims, and evaluates the most significant of them against a fixed list of academic, archival, and fact-checking domains. Each claim checked receives one of four verdicts along with an explanation and the sources consulted.
Which sources does Claimifi.biz use?
Analysis is constrained to the 32 domains listed above — historical associations, peer-reviewed journal databases, national archives, film and media archives, university presses, and established fact-checking organisations.
Is Claimifi.biz free to use?
Yes. You'll need a free account to use it. The free plan checks the 5 most significant claims in each video, and a per-visitor rate limit applies so the service stays available to everyone. A paid Pro plan checks up to 20 claims with a deeper analysis of each.
Why did my YouTube link fail?
Most often the video has no caption track, so there is no transcript to analyse. Private, deleted, and region-locked videos also cannot be retrieved. When that happens, enter the video's title instead.
Can I check a video without a transcript?
Yes. Enter the title instead of the URL. The analysis then covers the historical claims a video with that title typically makes, rather than the specific wording of that video.
How accurate is AI fact-checking?
Claimifi.biz is a research aid, not an authority. It is built to surface claims worth checking and point you at the scholarship, but verdicts can be wrong or incomplete. Always confirm important claims against the primary sources cited.