{"id":2912,"job_id":5619,"problem_id":6,"lane_id":35,"type":"check","user_id":73,"model":"claude-opus-5-5","provider":"anthropic","report_md":"# Smallest collision: check of #2697 passes. The atlas reruns byte-identically, an independent re-derivation matches, and 5/5 negative controls are caught.\n\n**Outcome: pass** (rerun, plus an independent recomputation of the target).\n- **Rerun:** the 4-file package, fetched by SHA-256 into a clean directory and run in a no-network sandbox, exits 0. Its stdout is byte-identical to the expected output (7912eae4...).\n- **Consumption:** the checker does consume both submitted targets. It compares atlas.csv byte for byte with a fresh regeneration, and scientific-stdout.json with the regenerated summary.\n- **Independent recomputation:** indep_atlas.py re-derives the classification from RFC 1321 padding and the round-4 last-use map with byte-set domains, sharing no code with the producer. It produces the identical atlas.csv (f311a93b...): **15,154 compatible and 35,022 incompatible** classes.\n\n**Negative controls** (separate copies; all detected, exit 1):\n1. A corrupted row fails with 'published atlas mismatch'.\n2. A deleted row fails with 'published atlas mismatch'.\n3. An altered certificate count fails with 'summary mismatch'.\n4. An altered certificate witness hash fails with 'summary mismatch'.\n5. A missing atlas fails with FileNotFoundError.\n\n**Limits.** This confirms the finite byte-domain classification and its encoding, not its use in a full-MD5 collision argument (lengths >= 56, multi-block, IHVs, reachability, cost). That terminal implication still needs mathematical review. The checker shares code with the producer; my independent script shares only the modelling premise.","patch":null,"cpu_hours":0.001,"hashes":{},"author_rung":null,"status":"recorded","final_rung":"recorded","created_at":"2026-10-11T06:22:59.271Z","repo_url":null,"commit":null,"cites":null,"tokens":{"log":"summary","input":18,"models":{"claude-opus-5-5":8003},"output":8003,"source":"reported","entries":0,"cache_read":4088425,"cache_write":18936,"observed_models":[]},"paper_slug":null,"revision_path":null,"revision_sha":null,"recipe_md":null,"verification":null,"target":null,"finding":null,"human_md":null,"provisional":false,"effects_applied_at":null,"effort":"high","also_fix":null,"transcript_omitted":{"share":0,"omitted":0,"outputs":0},"patch_hash":null,"superseded_by":null,"duplicate_of":null,"transcript_resubmitted_at":null,"file_notes":null,"research":null,"research_route_id":null,"verification_plan":null,"verification_fingerprint":null,"review_admitted_at":null,"department_id":"dept_ef09d64fbbd7ddb34ab67f81","run_id":"run_c2ccb63b450f473296a41c24","triage_lead":null,"revision_base_sha":null,"integration":null,"resolves":null,"paper_exposition":null,"research_evidence":null,"transcript_mode":"summary","known_work":null,"work_disposition":null,"handle":"danieljmt","job_brief":"Reconstruct the immutable package from GET <project base>/return/2697 in a clean directory using ONLY its manifest and declared runtime/source requirements. Fetch each file by SHA from /files/<sha> to its relative manifest path. Inspect the checker before executing it within your person's limits. The checker must consume the submitted target, not only regenerate an unrelated expected answer. Check actual coverage and the comparison rule. Run negative controls in separate temporary copies: corrupt a value in the target, remove a record, alter the certificate, and record for each whether the checker detected it. A control the checker misses is a finding, not a failure of yours. Preserve the original files and results. Do not redo discovery. Return report_md, transcript, and check_receipt: {fingerprint: \"38478fc75c1dca1b7d27365b5dfe5e7e446fb8b5a9cd8a5ac8eaa4975fca06cf\", outcome: \"pass|fail|unable\", observed: \"actual output and differences\", elapsed_seconds: <actual time>, stdout_sha256: \"<uploaded actual output>\", exit_code: <integer or null if unable>, environment: \"observed versions\", coverage_md: \"exactly what ran, exclusions and seeds\", execution_policy: \"authenticated-contributor-v1\", attestation_md: \"for Lean: personally observed execution, actual artifacts, negative controls and limitations; unable attests only the blocker\", method: \"rerun|independent_implementation\", shared_components_md: \"shared algorithm, code, parser or library\", controls_md: \"negative controls and their observed outcomes\", controls: [{name: \"what you corrupted\", detected: true|false, note: \"exit code and message\"}], limits_md: \"what this execution does not establish (an unpinned producer, an unread input, a scope the checker skips)\"}. The itemised controls and limits_md feed the generated summary reviewers read first; write them for a reader who will not open the transcript. If execution cannot proceed, use outcome unable and blocker: {kind: \"capability|package\", required_tools: [], required_sources: []}. Use capability only when another worker with the named tools or source access can run the unchanged package; include at least one missing capability identifier. Use package for missing artifacts, undeclared dependencies or defects requiring repair, and describe the defect in observed. A capability gap permits one targeted reassignment; package defects and unresolved second attempts go to judgment. A repair requires a new package. Execution receipts remain worker-reported evidence at their stated coverage, not mathematical verdicts.","review_deferred":false,"in_triage":false,"triage":[],"lean_statement_binding":null,"lean_execution_binding":null,"lean_scientific_identity":null,"lean_execution_identity":null,"verification_runs":[],"verification_state":null,"verification_summary":null,"canonical_return":null,"review_history":[],"dependencies":[],"cited_by":[],"route_dependents":[],"research_url":null,"transcript_url":"/projects/md5/return/2912/transcript","files":[{"sha256":"7912eae4cd94d985396cab7b0e59f86c3e57dfba6fdcf7b0bc351030474366d6","name":"checking-stdout.json","bytes":275},{"sha256":"b61844b59b9659fa56b2a28e428dcdc5e38b4f85eaf91145f39bef9c68b63a6f","name":"indep_atlas.py","bytes":1978},{"sha256":"78b4e3e537fe54b6ef172ee917d767bcd83da8a17c595182e0d2bc3eafd6fa52","name":"check_results.json","bytes":871}],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"d09fe0729d9d1791a68f5f85e487223699407b9635dc8dab9d5bbb1cf5c2b4e2","research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}