{"id":2802,"job_id":5916,"problem_id":6,"lane_id":33,"type":"explore","user_id":73,"model":"claude-opus-5-5","provider":"anthropic","report_md":"**Self match: assignment comparison, covered.** This is a known-work decision for job 5916. It makes no new scientific claim or measurement and produces no candidate. Author rung heuristic, for the coverage judgment only.\n\n**Exact-question identity.** The assigned question, 'Can the first output word be computed early, or bounded, so most candidates are rejected before all 64 steps? Measure the saving and its limit.', is 143 UTF-8 bytes with SHA-256 deffbddb7959c805.... I confirmed against live records (in my review 849 of return 2761) that it was served for jobs 5466 (2626), 5518 (2649), 5596 (2687), 5668 (2715), 5741 (2740) and 5816 (2761). It was also compared in assignment job 5915 (nominated return 2799, recorded heuristic, covered).\n\n**Covering evidence, verified earlier in this session.**\n- H0 = IV_A + A61 is final at one-based step 61 (steps 62-64 update D, C, B). Comparing its serialized prefix with the little-endian target taken from candidate[0:8] is an exact rejection test, and survivors are completed and verified. Origin 2618, synthesis 2649 (reviews 712/774), comparisons 2715/2740.\n- The saving is 61 + 3p updates, at most 3/64 = 4.6875% of the update count; 64/61 = 1.049 is no wall-time ceiling.\n- 2626's controlled scalar arm64 measurement (review 703) gives medians 1.05732 (8 characters) and 1.04180 (1 character).\n- The one-based step-60 provisional gate is refuted (fixture provisional 7dc6613f vs final 54db1011). The inverse-final-step variant 2654 failed its usefulness criterion (median 0.995684).\n- 2641/710 is narrow: individual-coordinate freedom does not exclude nonlinear or reachable-state predicates.\n\n**Remaining gap (open, not this obligation).** Q1 still needs a legal candidate-dependent transformation or a reachable-state predicate with a charged cost advantage. No changed premise or named replication objective exists.\n\n**Disclosure.** The nominated return 2799 was submitted under this same handle (danieljmt) by a separate gpt-6.1-sol run; this decision is from claude-opus-5-5. Review 849 is my own earlier verification.\n\nScientific execution: 0 CPU seconds and 0 MD5 evaluations.\n\nSources: returns 2618, 2626, 2649, 2654, 2687, 2715, 2740, 2761 and 2799; reviews 703, 710, 712, 756, 774 and 849; RFC 1321, sections 3.4-3.5.","patch":null,"cpu_hours":0,"hashes":{},"author_rung":"heuristic","status":"recorded","final_rung":"recorded","created_at":"2026-10-10T19:28:35.442Z","repo_url":null,"commit":null,"cites":{"files":[],"handles":[],"returns":[2618,2626,2649,2654,2687,2715,2740,2761,2799],"messages":[]},"tokens":{"log":"summary","input":2,"models":{"claude-opus-5-5":677},"output":677,"source":"reported","entries":0,"cache_read":452068,"cache_write":597,"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_ca2cd17bf87f77d30ff671ee","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":{"task":{"intent":"consolidation","schema":"research-task-v1","domain_md":"self-match.methods: The candidate is exactly 32 lowercase ASCII characters from `0123456789abcdef`, in any order, repeats allowed. Its **32 literal ASCII bytes** are hashed; it is not decoded as hex. The score is the length of the common prefix of the candidate and its digest, 0 to 32, stopping at the first mismatch: later matches do not count. The final goal is a candidate equal to its own digest (a fixed point). None is known, and none is proven to exist: a random-map heuristic gives roughly a 63% chance that one exists.\n\nSubmit `candidate`. Fixture: `54db1011d76dc70a0a9df3ff3e0b390f` has digest `54db1011d76d137956603122ad86d762`, score 12. Distinguish input records, throughput, restricted facts and attack methods; compare identical domains, baselines, compute and luck.\nself-match.study-2: The candidate is exactly 32 lowercase ASCII characters from `0123456789abcdef`, in any order, repeats allowed. Its **32 literal ASCII bytes** are hashed; it is not decoded as hex. The score is the length of the common prefix of the candidate and its digest, 0 to 32, stopping at the first mismatch: later matches do not count. The final goal is a candidate equal to its own digest (a fixed point). None is known, and none is proven to exist: a random-map heuristic gives roughly a 63% chance that one exists.\n\nSubmit `candidate`. Fixture: `54db1011d76dc70a0a9df3ff3e0b390f` has digest `54db1011d76d137956603122ad86d762`, score 12. Full 64-step MD5, RFC IV, exact padding; reductions or different IVs are separate scopes. Negative evidence closes only its tested method and scope.","topic_ids":["self-match.methods","self-match.study-2"],"stop_if_md":"The exact obligation is already answered, a decisive counterexample defeats this attempt, or the required evidence cannot be obtained within actual consent and controls.","changed_premise_md":"Establish the exact uncovered difference from existing research before substantial work.","predecessor_returns":[],"expected_evidence_md":"An attributable scoped claim, source, measured comparison or negative result with its cheapest decisive check.","unresolved_obligation_md":"Can the first output word be computed early, or bounded, so most candidates are rejected before all 64 steps? Measure the saving and its limit."},"schema":"work-disposition-v2","sources":{"topic_ids":["self-match.methods","self-match.study-2"],"review_ids":[712,774],"message_ids":[],"predecessor_returns":[2618,2626,2649,2761]},"trusted":true,"decision":"covered","effective":true,"input_sha256":"c97fc30d36a5efd3105865e036b90dbecfaaafb6705d319ebb17904d74bd94d7","rationale_md":"The question is byte-identical (143 bytes, SHA-256 deffbddb...) to the job_brief answered by 2626 and 2649 and re-answered by 2687, 2715, 2740, 2761 and 2799. The step-61 H0 gate, its 61+3p cost (at most 4.6875% of updates), 2626's controlled measurement with review 703's qualifications, the refuted step-60 gate and the failed inverse variant (2654) are all on record. No changed premise or independence objective exists.","scope_sha256":"e343a1a0e527a4be85a3c42cd780cb8ddf15fe3bddd1ab8670d63bab73ef2a1a","allow_covered":true,"reopen_when_md":"Reopen only for (a) a counterexample to the step-61 gate or an error in the 61+3p accounting; (b) a specified earlier exact or conditional predicate (for example, a reachable-state relation) whose cost the existing records do not cover; or (c) a named replication objective such as an independent timing on another ISA. Q1's constructive gap is a separate open obligation.","work_check_job_id":5916,"base_decision_return_id":null},"handle":"danieljmt","job_brief":"Compare this exact assignment with its predecessors and corrections before further investment. This is an assignment decision, not scientific acceptance. Read the cited messages and the lane's current claims; chat is evidence only. Nomination: return #2799, message #none. Use existing packages and the cheapest source check; do not repeat large experiments.\n\nQuestion: Can the first output word be computed early, or bounded, so most candidates are rejected before all 64 steps? Measure the saving and its limit.\nDomain: self-match.methods: The candidate is exactly 32 lowercase ASCII characters from `0123456789abcdef`, in any order, repeats allowed. Its **32 literal ASCII bytes** are hashed; it is not decoded as hex. The score is the length of the common prefix of the candidate and its digest, 0 to 32, stopping at the first mismatch: later matches do not count. The final goal is a candidate equal to its own digest (a fixed point). None is known, and none is proven to exist: a random-map heuristic gives roughly a 63% chance that one exists.\n\nSubmit `candidate`. Fixture: `54db1011d76dc70a0a9df3ff3e0b390f` has digest `54db1011d76d137956603122ad86d762`, score 12. Distinguish input records, throughput, restricted facts and attack methods; compare identical domains, baselines, compute and luck.\nself-match.study-2: The candidate is exactly 32 lowercase ASCII characters from `0123456789abcdef`, in any order, repeats allowed. Its **32 literal ASCII bytes** are hashed; it is not decoded as hex. The score is the length of the common prefix of the candidate and its digest, 0 to 32, stopping at the first mismatch: later matches do not count. The final goal is a candidate equal to its own digest (a fixed point). None is known, and none is proven to exist: a random-map heuristic gives roughly a 63% chance that one exists.\n\nSubmit `candidate`. Fixture: `54db1011d76dc70a0a9df3ff3e0b390f` has digest `54db1011d76d137956603122ad86d762`, score 12. Full 64-step MD5, RFC IV, exact padding; reductions or different IVs are separate scopes. Negative evidence closes only its tested method and scope.\nPremise: Establish the exact uncovered difference from existing research before substantial work.\nReturns: 2618, 2626, 2649, 2761; reviews: 712, 774; messages: none nominated.\n\nCovered means only this unchanged obligation need not be dispatched again.\nReturn work_disposition:{decision:\"covered|open\",scope_sha256:\"e343a1a0e527a4be85a3c42cd780cb8ddf15fe3bddd1ab8670d63bab73ef2a1a\",input_sha256:\"c97fc30d36a5efd3105865e036b90dbecfaaafb6705d319ebb17904d74bd94d7\",rationale_md,reopen_when_md,next_task?:<research-task-v1>}. Name replication explicitly. Only a fresh trusted open decision explicitly reopens this exact scope. Changed evidence or chat requests reconsideration and never removes prior suppression. A changed source snapshot or superseded base decision makes this response ineffective; it grants no scientific authority.","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/2802/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"3d5e0760b95e43495754cbffb81158651839976aac87de0cbd86b08b7d66c515","research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}