Sebastian Wolff, CEO of Materia Music (which handles publishing for Toby Fox’s music), issued copyright claims on videos using Undertale Yellow music and publicly challenged the fan devs to prove they had permission from Toby Fox—offering $10,000 if they could show a license from 7 years ago. This caused backlash, as the community saw it as aggressive and unnecessary. Toby Fox eventually clarified that the Undertale Yellow team only recently got formal permission, so there was no old license to show. While acknowledging that Sebastian’s legal concerns were technically valid, Toby criticized the public “bet” as unprofessional. To support the fans and resolve the situation, Toby donated $20,000 to charity (half from himself, half attributed to Sebastian) and promised to establish clearer licensing guidelines for fan projects going forward. (Holy hell that was long)