Vitalik Buterin has completed "Snowmoon," a 32-chapter work written entirely by himself with AI tools used solely for editing and consistency checks. The Ethereum co-founder confirmed that models including Kimi K3 and Qwen 3.8 Flash Next assisted only with technical refinement rather than content generation. The work is now open-sourced under the GPL v3 license, which extends to derivative adaptations. Any film or animation projects based on "Snowmoon" must also open-source their adaptation process under the same licensing terms, ensuring transparency in future creative derivatives.