Open Source Projects Adopt AI Contribution Bans: LLVM, EFF, Fedora, Gentoo, cURL Bug Bounty Killed

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A wave of major open source projects formally adopted AI contribution policies in early 2026: LLVM bans unsupervised AI-generated code, the EFF requires contributors to understand all code they submit, and Fedora/Gentoo/QEMU adopted stricter stances. Most dramatically, Daniel Stenberg shut down cURL's six-year bug bounty program in January after AI-generated submissions hit 20% of volume; Ghostty banned all AI code; tldraw now auto-closes all external PRs. The emerging framing is 'copyright laundering' — AI ingests copyleft code, strips provenance, and produces apparently unencumbered output.