A person's unicorn, can one really do it alone now?

It sounds a bit crazy, but as long as the leverage is right, I think the first solo unicorn is already targeting the most critical issue of today: reality is slowly dying.
What I plan to build myself is a real-time verification layer for global online content.
It quietly resides in your browser or phone, like a truth filter.
Now AI makes deepfake and fake news indistinguishable from real, and the most valuable thing left is whether I can trust these four words.
The entire system runs automatically on a bunch of professional AI agents.
One focuses on video evidence, pixel by pixel detecting anomalies, instantly spotting deepfakes;
another scans the entire web knowledge graph in real-time, tracing the earliest sources of news, quickly exposing ghostwriting and rumors;
the last one directly gives you a truth score, summarizing in a second, no beating around the bush.
Artificial intelligence makes all this possible for just one person.
In the past, fact-checking required a whole team of editors working overnight, but now these AI agents handle investigators, researchers, and customer service all in one.
Modern tools take over the heavy lifting, allowing a founder to create an autonomous engine that serves the whole world, without needing to build a team.
Pricing is also simple and straightforward.
Ordinary people pay a small monthly fee to avoid being scammed a few times;
social platforms and big companies need large-scale content verification, just pay via API.
When you no longer dare to trust your own eyes, the person willing to give you a verified badge is standing at a billion-dollar opportunity.