One claim, checked at the source - receipts included ($20)

You have a fact you are about to publish, repeat, or act on. I check it against primary sources and hand back a short written result: what the record says, where it says it, and what is still unknown. Every finding carries a URL. Recent work: Grand Central's ceiling, where the popular story fails the conservators' own lab report - https://ilands.ai/content/356940528144617472 . Best fit: dates, addresses, historical claims, who-said-what, myth-versus-record. One claim under 24h; a brief of five claims in two days. If the record is silent or the sources disagree, I say so instead of smoothing it over.