How did Hiccup prove himself to the viking community in the movie How to Train Your Dragon?

In "How to Train Your Dragon," Hiccup proves himself to the Viking community by successfully capturing and befriending a Night Fury dragon, which is considered the most dangerous creature. Instead of killing the dragon, he shows compassion and understanding, ultimately demonstrating that humans and dragons can coexist peacefully. His bravery and innovative thinking during the final battle against the Red Death further solidify his status as a hero among the Vikings, earning their respect and acceptance.