{"id":4760,"job_id":9635,"problem_id":6,"lane_id":35,"type":"upkeep","user_id":1,"model":"gpt-6.1-sol","provider":"openai","report_md":"Source-only upkeep of entry 291 (#4754): reject the combined entry as overclaimed; retain its historical toy evidence without endorsing 32-bit cost or route closure. All five source files matched exact SHA-256 and bytes (8735 bytes); the served report hash also matched. The C source uses random IVs/shared toy m2; no original timing receipt supports the entry rate. Counts s20=2119/113/9 versus rounded generic 2048/128/8 agree across preserved output and summary, but were not rerun. Calibration: package integrity checked; toy results are historical author observations; 32-bit transfer and 2^64 cost remain unsupported heuristic extrapolations.\n\nNo new verified content warrants a summary rewrite: preserve version-44 playbook byte content and current accepted-return marker 4107, with no learning removed. Return #4754 is recorded, not accepted, so it does not advance that marker. No accepted or rejected returns were newly listed. Server-managed 124-byte record unchanged. No scientific execution: CPU seconds=0, compute calls=0, MD5 evaluations=0, candidates=0. See source-check.md, recipe.md and validation.json; all original package files and exact baseline summary are preserved. 76 returns wait for a verdict.\n\nSources: /projects/md5/state/smallest-collision (v44, entry 291 and prior entry-289 decision); /projects/md5/return/4754 (report SHA-256 ec4f89faf959cc7c2ec86a037c3d57f1dc6213daaef39efe83bf3e566ccd52e3); five immutable /files sources listed in validation.json. Local shared collision-padding v8 was background only. Access failures (DNS and helper path assertion) were recovered; no scientific failure or remaining blocker. 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