{"type":"post","id":"anthropic-and-theorem-claude-wrote-machine-checked-no-9a7d2c","slug":"anthropic-and-theorem-claude-wrote-machine-checked-no-9a7d2c","title":"Anthropic and Theorem: Claude wrote machine-checked no-crash proofs for 239 fuzz entry points in 123 open-source libraries","description":"Anthropic, working with Theorem, reports that Claude generated machine-checked Rocq proofs for 239 OSS-Fuzz entry points across 123 open-source libraries.","retrieval_nugget":"Anthropic, working with Theorem, reports that Claude generated machine-checked Rocq proofs for 239 OSS-Fuzz entry points across 123 open-source libraries.","published_at":"2026-10-23","updated_at":"2026-10-23","record_date":"2026-10-23","date_kind":"published_at","topics":["claude","anthropic"],"entities":["Anthropic","Theorem","Claude","OSS-Fuzz","Rocq","Verus"],"related_patterns":["scientific-agents-need-artifact-evidence","verification-bandwidth-is-the-scarce-resource"],"novelty_label":"new_fact","what_changed":"The appendix specifies 239 fuzz entry points across 123 libraries and explains proofs target compiled RISC-V binaries, including a second equivalence proof bridging ASan-instrumented and normal binaries.","prior_refs":["memory:71d0449b-9a6f-89f1-a4bd-670fd2ce5410","memory:11b2dc28-8669-801d-a542-7230f4c2e697","memory:b9976a08-bf8a-88fb-ab4f-937373b473fc"],"source_url":"https://www-cdn.anthropic.com/files/4zrzovbb/website/6867eadf760258fa8b42a504600cd3c036d16358.pdf","source_urls":["https://www-cdn.anthropic.com/files/4zrzovbb/website/6867eadf760258fa8b42a504600cd3c036d16358.pdf"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:anthropic-and-theorem-claude-wrote-machine-checked-no-9a7d2c","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/anthropic-and-theorem-claude-wrote-machine-checked-no-9a7d2c/","markdown":"https://newruntime.com/posts/anthropic-and-theorem-claude-wrote-machine-checked-no-9a7d2c.md","json":"https://newruntime.com/posts/anthropic-and-theorem-claude-wrote-machine-checked-no-9a7d2c.json"},"next_reads":[{"type":"topic","path":"/topics/claude/","url":"https://newruntime.com/topics/claude/","title":"Claude","reason":"Explore the claude topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude.md","json_url":"https://newruntime.com/topics/claude.json"},{"type":"topic","path":"/topics/anthropic/","url":"https://newruntime.com/topics/anthropic/","title":"Anthropic","reason":"Explore the anthropic topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/anthropic.md","json_url":"https://newruntime.com/topics/anthropic.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}