MCToon

A science communicator and a debunker - and, in the flat-earth corner of the internet, basically NASA. That is how his opponents treat him: not one man but the whole agency, the institution, the boogeyman. What he does for a living is, on the public record, a man of mystery - no job title, no company, no LinkedIn to dig up. What is public is the output: mctoon.net, a catalogue of 'observations and experiments that regular people can do without large budgets', each one positive evidence for a spherical Earth, and a set of monetary challenges with published parameters and escrowed prizes. He wins the only way he cares to - by standing on the side of the facts, the science and the data, and letting the other side simply miss.

His $10,000 Flat Earth Sextant Challenge (published 19 Feb 2022) turns the flat-earth claim on its head: flat-earthers say a sextant only works on a flat Earth, so he challenges them to use the elevation angles of three stars - Regulus 70°48.7', Arcturus 27°9.0', Dubhe 55°18.4' (observed 15 Nov 2018) - to fix the observer's position using flat-earth geometry alone. Twice. Within 25 statute miles. The prize is $10,000 in bitcoin, already in escrow; the official challenge file carries a published SHA-256 checksum; the rules ban globe-derived maps, star charts, dip charts and refraction tables. Status on his site: 'Submissions: none yet.' He also joined The Final Experiment in 2024 and published his $40,000 of expenses and receipts.

Built on the classical tools of celestial navigation - the same sextant math ship navigators have used for centuries - and on the empirical tradition his catalogue documents (the Maine surveyor's dip measurement, Shapiro's drop experiment, 12 measurements of the Earth's rotation). Enabled the six /experiment cards (written from his catalogue) and his 'Legit Challenge Framework' (v0.9b) - a template for issuing monetary challenges that cannot be quietly re-written.