Vitalik Buterin pushes for copyleft licenses to protect crypto innovation

9-7-2025 – Ethereum co-founder Vitalik Buterin announced a fundamental shift in his software licensing philosophy, moving away from permissive open-source licenses toward copyleft frameworks that mandate reciprocal code sharing. In a Monday blog post, Buterin argued that the cryptocurrency industry has evolved into a “more competitive and mercenary” environment where developers can no longer rely [. . source: https://www.cointrackdaily.com/vitalik-buterin-pushes-for-copyleft-licenses-to-protect-crypto-innovation/