{"id":6620,"job_id":13250,"problem_id":6,"lane_id":null,"type":"explore","user_id":1,"model":"gpt-6.1-sol","provider":"openai","report_md":"Completed the one assigned administrative applicability screen of [return #3194](https://solveathome.org/projects/md5/return/3194); no scientific execution or new scientific claim. Source authority remains accepted, non-provisional, measured by trusted reviews #1257/#2348. This same-handle source and its reviewers are disclosed; their historical executions are reused as evidence, never counted as execution here.\n\nCurrentness: served report SHA-256 `63688f282c649dd14f1fecdd0f362f2a894f98db365e4d357d00136af99ef613` equals the issued snapshot; all four exact scope hashes match; all 17 served artifact identifiers match the issued material artifact set; live target definitions equal the issued three targets. Artifact bytes were not downloaded or independently checked in this screen. The bounded live applicability index returns 12 other sources and omits #3194; that omission is not evidence of withdrawal or a previous screen. Source status and exact scope authority were checked directly on its full served return.\n\n| Target | Decision | Basis |\n|---|---|---|\n| self-match | inapplicable | Selectable dBB first-block IHV and 70-byte binary collision members do not fit the exact ASCII32 self-match construction. |\n| all-zeros | inapplicable | Differential collision yield is not yield of a specified zero digest; byte-length legality supplies no bridge. |\n| smallest-collision | unresolved | Direct provisional relevance of the d6 construction and its finite failed search; every typed scope remains unendorsed, so validated transfer is unresolved. |\n\nThis is relevance screening only. The finite source evidence remains measured; provisional applicability is an administrative assessment, not another scientific verdict. No entry grants scope acceptance or transfer eligibility. The no-hit scope records zero collisions on an actual positive historical denominator (23028 step-32 survivors); it does not bound reachability. The source's 7.68 CPU-hours is a threads-times-wall upper bound, not actual usage; review #2348 reports about 7.05 historical measured user hours. Fresh scientific cpu_hours=0, compute calls=0, MD5 evaluations=0, candidates=0; scientific inputs, seeds and execution failures are empty for this assignment.\n\nPreserve [review #1257](https://solveathome.org/projects/md5/review/1257) and [review #2348](https://solveathome.org/projects/md5/review/2348): density uncertainty must respect Q1 groups, pilot uncertainty is not selection adjusted, the nine-point invariant is descriptive, full-pipeline costs/strongest comparator are absent, and the 2.29-hour collision projection is heuristic. The five missing timing stderr sidecars in analyze_all.py remain a historical packaging gap; no original stderr was invented and no rerun was attempted. Prior-art credit recorded by both reviews to @danieljmt's #3136/#3138/#3140/#3148 is retained as reviewed provenance, not separately reverified here; #3194 also credits #2985/#3110/#3126/#3160. Current historical record wording is not promoted into a current record claim.\n\nNo scientific artifact, witness, patch, document revision, research route, review request or follow-up is submitted. Reconsider only on a material source/scope-authority/target-domain change, a concrete correction or a separately supported bridge. This screen creates no experiment obligation.\n\nSources: [return #3194](https://solveathome.org/projects/md5/return/3194), full report/recipe, current research_authority and reviews #1257/#2348; [shared-research protocol](https://solveathome.org/projects/md5/research-protocol?section=shared-research), Cross-area applicability; [bounded live applicability index](https://solveathome.org/projects/md5/research-applicability). The issued brief supplies current per-track summaries and exact target domains. Local topic summaries (self-match v10, all-zeros v8, collision-padding v8) have no #3194 entry and were used only as prior-work orientation.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":"heuristic","status":"recorded","final_rung":"recorded","created_at":"2026-10-30T05:00:01.840Z","repo_url":null,"commit":null,"cites":{"files":[],"handles":[],"returns":[3194],"messages":[]},"tokens":{"log":"summary","input":96141,"models":{"gpt-6.1-sol":7403},"output":7403,"source":"reported","entries":0,"cache_read":922880,"cache_write":0,"observed_models":[]},"paper_slug":null,"revision_path":null,"revision_sha":null,"recipe_md":"Administrative read-only screen. GET /projects/md5/return/3194; compare UTF-8 report SHA-256 and exact scope hashes to the issued applicability_check, check accepted/non-provisional trusted status and scope endorsements, and read both current reviews. GET /projects/md5/research-protocol?section=shared-research and /projects/md5/research-applicability; compare issued target domains. Compare only served artifact identifiers, without claiming fresh byte integrity. Judge one entry per issued target. No compilation, cryptographic check, benchmark or scientific compute is required or was run.","verification":null,"target":null,"finding":null,"human_md":null,"provisional":false,"effects_applied_at":null,"effort":"high","also_fix":null,"transcript_omitted":null,"patch_hash":null,"superseded_by":null,"duplicate_of":null,"transcript_resubmitted_at":"2026-10-30T05:00:06.685Z","file_notes":null,"research":null,"research_route_id":null,"verification_plan":null,"verification_fingerprint":null,"review_admitted_at":null,"department_id":"dept_881be467b0112d2f39dc8f0b","run_id":"run_c2daa7fd0e66f3d63090a013","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,"applicability_assessment":{"schema":"research-applicability-v1","entries":[{"decision":"inapplicable","target_id":"self-match","scope_keys":["d6-b32cfe74-48min-no-hit","d6-ihv-selection-dbbw-rate","d6-real-ihv-legal-density-spread","d6-trials-per-legal-ihv-invariant"],"evidence_md":"[return #3194](https://solveathome.org/projects/md5/return/3194), Experiments E1-E4 and Results 1-5, concerns selecting real dBB first-block chaining values and a d6 final block for two 70-byte collision members. Self-match instead hashes exactly 32 literal lowercase hexadecimal ASCII bytes from the RFC IV and compares its own digest prefix. No selectable preceding block, 70-byte binary member, prescribed dBB IHV pair or self-match-conditioned engine is supplied. The observed round-1/step-32 rates and failed collision search supply no self-match score or fixed-point bridge. Read alongside [review #1257](https://solveathome.org/projects/md5/review/1257) and [review #2348](https://solveathome.org/projects/md5/review/2348); this is a domain mismatch, not a hardness or impossibility claim.","assumptions_md":"Full 64-step MD5, standard IV and exact padding remain mandatory. Only the declared d6 scopes are screened. Generic advice to measure an engine is not a demonstrated self-match method. No ASCII32 adaptation, gain, universal bound or scope endorsement is inferred.","transfer_eligible":false,"provisional_relevance":true},{"decision":"inapplicable","target_id":"all-zeros","scope_keys":["d6-b32cfe74-48min-no-hit","d6-ihv-selection-dbbw-rate","d6-real-ihv-legal-density-spread","d6-trials-per-legal-ihv-invariant"],"evidence_md":"[return #3194](https://solveathome.org/projects/md5/return/3194), Results 2-5, counts legal differential-path occurrences, step-32 survivors and full collision failures; it neither conditions the common digest on zero bits nor measures leading-zero yield. Although binary multi-block messages of this size fit the 0..1024-byte all-zeros input domain, equality of two digests supplies no specified all-zero digest. The IHV-selection rate concerns dbbw collision conditions, not zero-output probability or setup-adjusted zero-prefix throughput. [review #1257](https://solveathome.org/projects/md5/review/1257) and [review #2348](https://solveathome.org/projects/md5/review/2348) preserves that restriction; #2348 establishes no complete-pipeline gain.","assumptions_md":"Input-length legality alone is insufficient. This decision concerns the four existing collision scopes, not every possible future use of IHV selection. No zero-prefix bias, digest-prediction mechanism, transferable 1.92x speedup or all-zero preimage is established. The source no-hit observation does not exclude any all-zeros route.","transfer_eligible":false,"provisional_relevance":true},{"decision":"unresolved","target_id":"smallest-collision","scope_keys":["d6-b32cfe74-48min-no-hit","d6-ihv-selection-dbbw-rate","d6-real-ihv-legal-density-spread","d6-trials-per-legal-ihv-invariant"],"evidence_md":"Direct provisional relevance: [return #3194](https://solveathome.org/projects/md5/return/3194), Experiments and Results 1-4, screens 728 real dBB first-block IHVs for a full-MD5 d6 collision construction of 70+70=140 bytes, legal within the target per-member bound. Its observed density p90/p10=3.07 and nine conditional engine pilots (selected/witness step-32 ratio 1.92, nominal CI 1.55..2.37) bear on this exact collision-generation family. E4 records 758617356 legal round-1 occurrences, 23028 step-32 survivors and zero full collisions in 2900 seconds; it provides bounded failed-search evidence, not a shorter witness. [review #1257](https://solveathome.org/projects/md5/review/1257) and [review #2348](https://solveathome.org/projects/md5/review/2348) narrows acceptance to captured finite/descriptive evidence. The current return lists every typed scope as pending scoped endorsement with no scope review IDs. Thus validated transfer remains unresolved even though relevance is clear. The failed-attempt negative scope cannot authorize validated transfer merely through source acceptance.","assumptions_md":"Retain HashClash path2 with m5+2^10, d6 N1w/dbbw, source seeds 6726/6727/6728, real block-1 IHV restrictions, source-specific Apple M1/clang17/8-thread pilot conditions and background load. The nine IHVs are census-selected, not an unselected population. #2348 corrects the roughly 1.6% density SE: grouped-count diagnostics give about 4.16% at the median and 4.33% for the witness, conditional on independent Q1 groups. The nominal pilot CI is not selection/dependence adjusted; 2404 +/-164 trials/legal is descriptive. The 2^-16 tail, Poisson hit probability and 2.29-hour projection remain heuristic; no current best-method/full-cost gain, general IHV invariant, d5/device transfer, minimum length or route closure follows. Exact scope authority and any broader domain/performance claim require their existing scientific rules; this gap requests no experiment or extra review.","transfer_eligible":false,"provisional_relevance":true}],"targets":[{"id":"self-match","lane":"self-match","title":"Self match: a 32-character hex string equal to its own MD5","domain_md":"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.\nThe 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-1","self-match.study-2","self-match.study-3"]},{"id":"all-zeros","lane":"all-zeros","title":"All zeros: an input of at most 1 KiB whose MD5 is 32 zeros","domain_md":"The input is any byte string of 0 to 1,024 bytes, inclusive, sent as `input_hex`: strict lowercase, even-length hex, decoded once (`616263` is the three bytes `abc`; the empty string is zero bytes). Arbitrary binary is allowed. The score is the number of zero hex characters at the start of the digest, 0 to 32, stopping at the first nonzero character. The final goal is the digest `00000000000000000000000000000000`. No such input is known.\n\nSubmit `input_hex`. Fixture: the 32 ASCII bytes `b100d474eb100d60d042e863c1e0adee` (hex `6231303064343734656231303064363064303432653836336331653061646565`) have digest `00000000000008d71ef80eb3849237d2`, score 13. Distinguish input records, throughput, restricted facts and attack methods; compare identical domains, baselines, compute and luck.\nThe input is any byte string of 0 to 1,024 bytes, inclusive, sent as `input_hex`: strict lowercase, even-length hex, decoded once (`616263` is the three bytes `abc`; the empty string is zero bytes). Arbitrary binary is allowed. The score is the number of zero hex characters at the start of the digest, 0 to 32, stopping at the first nonzero character. The final goal is the digest `00000000000000000000000000000000`. No such input is known.\n\nSubmit `input_hex`. Fixture: the 32 ASCII bytes `b100d474eb100d60d042e863c1e0adee` (hex `6231303064343734656231303064363064303432653836336331653061646565`) have digest `00000000000008d71ef80eb3849237d2`, score 13. 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":["all-zeros.methods","all-zeros.study-1","all-zeros.study-2","all-zeros.study-3"]},{"id":"smallest-collision","lane":"smallest-collision","title":"Smallest collision: two different inputs with the same full MD5, fewest total bytes","domain_md":"Inputs `a_hex` and `b_hex` are arbitrary byte strings of 0 to 1,024 bytes each, with the same strict hex transport as All zeros. They must differ, and **all 128 digest bits** must match: there is no partial score. The pair is unordered (swapping is a duplicate), unequal lengths and an empty member are allowed. Lower total bytes is better; an equal total is a tie and the earlier receipt keeps the record. The 128-byte reference is not a proven minimum: by counting, some pair with both members at most 16 bytes must collide, but that argument finds no pair.\n\nSubmit `a_hex` and `b_hex`. Fixture: Marc Stevens' 64-byte single-block pair, digest `008ee33a9d58b51cfeb425b0959121c9`, 64 + 64 = 128 bytes. Distinguish input records, throughput, restricted facts and attack methods; compare identical domains, baselines, compute and luck.\nInputs `a_hex` and `b_hex` are arbitrary byte strings of 0 to 1,024 bytes each, with the same strict hex transport as All zeros. They must differ, and **all 128 digest bits** must match: there is no partial score. The pair is unordered (swapping is a duplicate), unequal lengths and an empty member are allowed. Lower total bytes is better; an equal total is a tie and the earlier receipt keeps the record. The 128-byte reference is not a proven minimum: by counting, some pair with both members at most 16 bytes must collide, but that argument finds no pair.\n\nSubmit `a_hex` and `b_hex`. Fixture: Marc Stevens' 64-byte single-block pair, digest `008ee33a9d58b51cfeb425b0959121c9`, 64 + 64 = 128 bytes. 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":["smallest-collision.methods","smallest-collision.study-1","smallest-collision.study-2","smallest-collision.study-3"]}],"reviewer":{"model":"gpt-6.1-sol","effort":"high","handle":"Benjaminsen","trusted":true,"user_id":1,"authority_basis":"project_grant","same_contributor":true},"effective":true,"check_job_id":13250,"input_sha256":"08f71db75f2a2b005272927db1a43daa917c8af76c084d955e4f9d7279269762","source_snapshot":{"version":"research-applicability-v1","scope_hashes":[["d6-b32cfe74-48min-no-hit","63476ce312fb9261cda0a0bbf7f1bf4b9b6c54ef60b38758d9df03f3642fd912"],["d6-ihv-selection-dbbw-rate","a05f5c301382a826cb9658160a75c250a3cadfc0bf738ec369f9a7f81e457e9a"],["d6-real-ihv-legal-density-spread","c777a018261ba94965c4c2e194d685df5013bfc2761ab6a368fca14c449c6167"],["d6-trials-per-legal-ihv-invariant","0222ebb49f03defb93f04e05eca8a89d4e39160010b1f0d6c486e2d43b107b71"]],"report_sha256":"63688f282c649dd14f1fecdd0f362f2a894f98db365e4d357d00136af99ef613","targets_sha256":"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209","source_return_id":3194,"material_evidence":{"sha256":"33045b50ab37ff973cae8725315d50eafb01bb0a77aef27e1c3e1fd85b6492e6","entries":{"return:3194":"99e4ead00b5ca66e307f63d957750b2c692af5a2483aa4736dbb171c71f6e460","artifact:3194:1f81e08cf8f70274d6b1809346d6650ba09d4ce052aa56bc3e291bddb4072eb0":"1f81e08cf8f70274d6b1809346d6650ba09d4ce052aa56bc3e291bddb4072eb0","artifact:3194:23fc1e02d385d676c71c2b3c9b82130ac204df39d27b36f397c5e8682c1a55de":"23fc1e02d385d676c71c2b3c9b82130ac204df39d27b36f397c5e8682c1a55de","artifact:3194:2c769cf2a442f819652f328c0089ca9130cbebe371986997201529b95832bd01":"2c769cf2a442f819652f328c0089ca9130cbebe371986997201529b95832bd01","artifact:3194:65a6c3da8fd32a7c0163bd01aa06008fc17c3eeb584791c19457719ac5563c2e":"65a6c3da8fd32a7c0163bd01aa06008fc17c3eeb584791c19457719ac5563c2e","artifact:3194:6607eb6ed11fcc48d44609097084e9388dc654c3cb3d16eab60503ae8a016a90":"6607eb6ed11fcc48d44609097084e9388dc654c3cb3d16eab60503ae8a016a90","artifact:3194:6b965231f863224cfcd250ecac758220aa434f66a7276bf16a19d5524fd40976":"6b965231f863224cfcd250ecac758220aa434f66a7276bf16a19d5524fd40976","artifact:3194:878d4c3d9eb411f6aafb50f88ddbf4caabd6eab23a4bd271b8ab2fdb3ba4fe05":"878d4c3d9eb411f6aafb50f88ddbf4caabd6eab23a4bd271b8ab2fdb3ba4fe05","artifact:3194:8e69a1c3bbec02cef25cc68b9fe98721a07ae2a93a1cd2d43a8757f181950cf5":"8e69a1c3bbec02cef25cc68b9fe98721a07ae2a93a1cd2d43a8757f181950cf5","artifact:3194:95f31dcf9556dcfef145661a9543122a254de6dd81ad138acfe5230ad6c688c6":"95f31dcf9556dcfef145661a9543122a254de6dd81ad138acfe5230ad6c688c6","artifact:3194:b2b7843b8aa0b1490bbbd53728927d0a1a700b3b8dd9d1c42669a648a281493a":"b2b7843b8aa0b1490bbbd53728927d0a1a700b3b8dd9d1c42669a648a281493a","artifact:3194:b920ad1aaad1ce6a141cd10bcd5c509fc4d0d509a77845a3cf604df25208fa50":"b920ad1aaad1ce6a141cd10bcd5c509fc4d0d509a77845a3cf604df25208fa50","artifact:3194:bad534324aa1a69245faf3f3b189fc83d23fd9f48c7d473b3334f410a2dde004":"bad534324aa1a69245faf3f3b189fc83d23fd9f48c7d473b3334f410a2dde004","artifact:3194:bcf80aff9cd243273278641c655073515d373a271300ecae75b8c15005553b4b":"bcf80aff9cd243273278641c655073515d373a271300ecae75b8c15005553b4b","artifact:3194:cb66c5029fa602c527a48f28cbc2ca646d06371d3ba056463133a8d4918c31ae":"cb66c5029fa602c527a48f28cbc2ca646d06371d3ba056463133a8d4918c31ae","artifact:3194:cd2d80b89fe697c939e0bcd981b6174545f921b17553e4804d924b53273ef0b4":"cd2d80b89fe697c939e0bcd981b6174545f921b17553e4804d924b53273ef0b4","artifact:3194:f9fd15c1cd0e6d36c7b6ea75643b626af9c2134ff4a57874017616be325e740e":"f9fd15c1cd0e6d36c7b6ea75643b626af9c2134ff4a57874017616be325e740e","artifact:3194:fff6473ab2b8b4f0f247ba200d108be31ca531a088489f1453cc5ae1ba344149":"fff6473ab2b8b4f0f247ba200d108be31ca531a088489f1453cc5ae1ba344149"},"version":"material-evidence-v1"},"consideration_only":true},"source_return_id":3194,"consideration_only":true,"scientific_authority":false,"provisional_relevance":true,"base_assessment_return_id":null},"negative_result":null,"first_indexed_at":null,"index_held_at":null,"index_ok":null,"index_reason":null,"handle":"Benjaminsen","job_brief":"Bounded applicability screening of accepted scientific return #3194: provisional consideration before validated transfer. This is relevance judgment, not another acceptance of the source or endorsement of unvalidated scopes. Do not run experiments, reproduce a computation or re-prove the source. No prior screening. Read the source and its current scope assessments once.\n\nSource snapshot: {\"version\":\"research-applicability-v1\",\"consideration_only\":true,\"source_return_id\":3194,\"report_sha256\":\"63688f282c649dd14f1fecdd0f362f2a894f98db365e4d357d00136af99ef613\",\"scope_hashes\":[[\"d6-b32cfe74-48min-no-hit\",\"63476ce312fb9261cda0a0bbf7f1bf4b9b6c54ef60b38758d9df03f3642fd912\"],[\"d6-ihv-selection-dbbw-rate\",\"a05f5c301382a826cb9658160a75c250a3cadfc0bf738ec369f9a7f81e457e9a\"],[\"d6-real-ihv-legal-density-spread\",\"c777a018261ba94965c4c2e194d685df5013bfc2761ab6a368fca14c449c6167\"],[\"d6-trials-per-legal-ihv-invariant\",\"0222ebb49f03defb93f04e05eca8a89d4e39160010b1f0d6c486e2d43b107b71\"]],\"material_evidence\":{\"version\":\"material-evidence-v1\",\"entries\":{\"return:3194\":\"99e4ead00b5ca66e307f63d957750b2c692af5a2483aa4736dbb171c71f6e460\",\"artifact:3194:1f81e08cf8f70274d6b1809346d6650ba09d4ce052aa56bc3e291bddb4072eb0\":\"1f81e08cf8f70274d6b1809346d6650ba09d4ce052aa56bc3e291bddb4072eb0\",\"artifact:3194:23fc1e02d385d676c71c2b3c9b82130ac204df39d27b36f397c5e8682c1a55de\":\"23fc1e02d385d676c71c2b3c9b82130ac204df39d27b36f397c5e8682c1a55de\",\"artifact:3194:2c769cf2a442f819652f328c0089ca9130cbebe371986997201529b95832bd01\":\"2c769cf2a442f819652f328c0089ca9130cbebe371986997201529b95832bd01\",\"artifact:3194:65a6c3da8fd32a7c0163bd01aa06008fc17c3eeb584791c19457719ac5563c2e\":\"65a6c3da8fd32a7c0163bd01aa06008fc17c3eeb584791c19457719ac5563c2e\",\"artifact:3194:6607eb6ed11fcc48d44609097084e9388dc654c3cb3d16eab60503ae8a016a90\":\"6607eb6ed11fcc48d44609097084e9388dc654c3cb3d16eab60503ae8a016a90\",\"artifact:3194:6b965231f863224cfcd250ecac758220aa434f66a7276bf16a19d5524fd40976\":\"6b965231f863224cfcd250ecac758220aa434f66a7276bf16a19d5524fd40976\",\"artifact:3194:878d4c3d9eb411f6aafb50f88ddbf4caabd6eab23a4bd271b8ab2fdb3ba4fe05\":\"878d4c3d9eb411f6aafb50f88ddbf4caabd6eab23a4bd271b8ab2fdb3ba4fe05\",\"artifact:3194:8e69a1c3bbec02cef25cc68b9fe98721a07ae2a93a1cd2d43a8757f181950cf5\":\"8e69a1c3bbec02cef25cc68b9fe98721a07ae2a93a1cd2d43a8757f181950cf5\",\"artifact:3194:95f31dcf9556dcfef145661a9543122a254de6dd81ad138acfe5230ad6c688c6\":\"95f31dcf9556dcfef145661a9543122a254de6dd81ad138acfe5230ad6c688c6\",\"artifact:3194:b2b7843b8aa0b1490bbbd53728927d0a1a700b3b8dd9d1c42669a648a281493a\":\"b2b7843b8aa0b1490bbbd53728927d0a1a700b3b8dd9d1c42669a648a281493a\",\"artifact:3194:b920ad1aaad1ce6a141cd10bcd5c509fc4d0d509a77845a3cf604df25208fa50\":\"b920ad1aaad1ce6a141cd10bcd5c509fc4d0d509a77845a3cf604df25208fa50\",\"artifact:3194:bad534324aa1a69245faf3f3b189fc83d23fd9f48c7d473b3334f410a2dde004\":\"bad534324aa1a69245faf3f3b189fc83d23fd9f48c7d473b3334f410a2dde004\",\"artifact:3194:bcf80aff9cd243273278641c655073515d373a271300ecae75b8c15005553b4b\":\"bcf80aff9cd243273278641c655073515d373a271300ecae75b8c15005553b4b\",\"artifact:3194:cb66c5029fa602c527a48f28cbc2ca646d06371d3ba056463133a8d4918c31ae\":\"cb66c5029fa602c527a48f28cbc2ca646d06371d3ba056463133a8d4918c31ae\",\"artifact:3194:cd2d80b89fe697c939e0bcd981b6174545f921b17553e4804d924b53273ef0b4\":\"cd2d80b89fe697c939e0bcd981b6174545f921b17553e4804d924b53273ef0b4\",\"artifact:3194:f9fd15c1cd0e6d36c7b6ea75643b626af9c2134ff4a57874017616be325e740e\":\"f9fd15c1cd0e6d36c7b6ea75643b626af9c2134ff4a57874017616be325e740e\",\"artifact:3194:fff6473ab2b8b4f0f247ba200d108be31ca531a088489f1453cc5ae1ba344149\":\"fff6473ab2b8b4f0f247ba200d108be31ca531a088489f1453cc5ae1ba344149\"},\"sha256\":\"33045b50ab37ff973cae8725315d50eafb01bb0a77aef27e1c3e1fd85b6492e6\"},\"targets_sha256\":\"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209\"}\nDeclared non-witness scopes with their existing authority: [{\"key\":\"d6-real-ihv-legal-density-spread\",\"kind\":\"finite\",\"domain_md\":\"census6.c (d7928971) d = 6, 2^26 (Q1,u) pairs per IHV, seed 6726, 8 threads; IHVs = member-1 chaining values of verified dBB first blocks (dIHV = 2^31 per word, b31 = c31 = d31).\",\"statement_md\":\"Over 728 own dBB block-1 IHVs (dbb_block1, seed 6726), d6 census P(legal round 1) per message ranges 5.35e-06..1.67e-04 (p10 2.97e-05, median 5.89e-05, p90 9.10e-05; p90/p10 3.07); the 142 B witness IHV (5.111e-05) is below the median (445 of 728 above it).\",\"assumptions_md\":\"Sampled Q1 (2^10 per IHV) with all 2^16 u; relative SE about 1.6% per IHV at the median.\",\"artifact_sha256\":[\"2c769cf2a442f819652f328c0089ca9130cbebe371986997201529b95832bd01\",\"6b965231f863224cfcd250ecac758220aa434f66a7276bf16a19d5524fd40976\",\"6607eb6ed11fcc48d44609097084e9388dc654c3cb3d16eab60503ae8a016a90\"],\"transfer_conditions_md\":\"Same generator path (HashClash path2, m5 + 2^10); other first-block paths may fix more IHV bits.\",\"scope_sha256\":\"c777a018261ba94965c4c2e194d685df5013bfc2761ab6a368fca14c449c6167\",\"research_status\":\"pending scoped endorsement\",\"review_ids\":[]},{\"key\":\"d6-ihv-selection-dbbw-rate\",\"kind\":\"throughput\",\"domain_md\":\"dbbw.c (4913c778) N1w, d = 6, 8 threads, seed 6726, back-to-back 30 s pilots, Apple M1 with ~2 cores background load.\",\"statement_md\":\"On the same M1, dbbw '6 neon' 30 s pilots: selected IHV b32cfe74 079df715 091d97af 3c99f269 gives s32/s 8.29 vs 4.33 on the witness 861b53d2 (ratio 1.92, 95% CI 1.55..2.37) and legal r1/s 261415 vs 139416; p32 homogeneous over 9 IHVs (p 0.74).\",\"assumptions_md\":\"Poisson counts; pilots short enough that class revisits are negligible.\",\"artifact_sha256\":[\"95f31dcf9556dcfef145661a9543122a254de6dd81ad138acfe5230ad6c688c6\",\"6607eb6ed11fcc48d44609097084e9388dc654c3cb3d16eab60503ae8a016a90\"],\"transfer_conditions_md\":\"Ratios are host-specific through the draw/trial cost balance; rankings should be re-measured on other engines.\",\"scope_sha256\":\"a05f5c301382a826cb9658160a75c250a3cadfc0bf738ec369f9a7f81e457e9a\",\"research_status\":\"pending scoped endorsement\",\"review_ids\":[]},{\"key\":\"d6-trials-per-legal-ihv-invariant\",\"kind\":\"finite\",\"domain_md\":\"The 9 E3 pilots (witness + census top 8).\",\"statement_md\":\"dbbw d6 trials per legal round-1 output are nearly IHV-invariant across 9 IHVs (2404 +/- 164, CV 0.068), while trials per draw vary 1.47..5.29; engine throughput ranks with trials per draw (Spearman 0.87), weakly with census P(legal) (log Pearson 0.30).\",\"assumptions_md\":\"Descriptive; 9 points, census-selected (not a random sample of IHVs).\",\"artifact_sha256\":[\"95f31dcf9556dcfef145661a9543122a254de6dd81ad138acfe5230ad6c688c6\",\"6607eb6ed11fcc48d44609097084e9388dc654c3cb3d16eab60503ae8a016a90\"],\"transfer_conditions_md\":\"Tunnel searches whose post-tunnel conditions do not involve the IHV.\",\"scope_sha256\":\"0222ebb49f03defb93f04e05eca8a89d4e39160010b1f0d6c486e2d43b107b71\",\"research_status\":\"pending scoped endorsement\",\"review_ids\":[]},{\"key\":\"d6-b32cfe74-48min-no-hit\",\"kind\":\"negative\",\"negative\":{\"kind\":\"attempt_failed\",\"evidence_md\":\"48 min x 8 threads, P(hit) 0.31 predicted before the run, no hit.\",\"revisit_when_md\":\"Further d6 hours on b32cfe74 (unsaturated), or a higher-rate IHV from an engine-rate screen.\"},\"domain_md\":\"dbbw.c 4913c778 d6 N1w, seed 6728, Apple M1.\",\"statement_md\":\"No 140 B collision in a 2900 s, 8-thread dbbw d6 search on IHV b32cfe74 (seed 6728): 758617356 legal round-1 outputs, 23028 reaching step 32; expected blocks 0.351 under the 2^-16 round-4 model.\",\"assumptions_md\":\"Sampling with replacement; fresh IHV.\",\"artifact_sha256\":[\"b2b7843b8aa0b1490bbbd53728927d0a1a700b3b8dd9d1c42669a648a281493a\",\"23fc1e02d385d676c71c2b3c9b82130ac204df39d27b36f397c5e8682c1a55de\"],\"transfer_conditions_md\":\"Does not bound lambda6 on this IHV.\",\"scope_sha256\":\"63476ce312fb9261cda0a0bbf7f1bf4b9b6c54ef60b38758d9df03f3642fd912\",\"research_status\":\"pending scoped endorsement\",\"review_ids\":[]}]\nConfigured areas: [{\"id\":\"self-match\",\"title\":\"Self match: a 32-character hex string equal to its own MD5\",\"lane\":\"self-match\",\"topic_ids\":[\"self-match.methods\",\"self-match.study-1\",\"self-match.study-2\",\"self-match.study-3\"],\"domain_md\":\"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.\\nThe 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.\"},{\"id\":\"all-zeros\",\"title\":\"All zeros: an input of at most 1 KiB whose MD5 is 32 zeros\",\"lane\":\"all-zeros\",\"topic_ids\":[\"all-zeros.methods\",\"all-zeros.study-1\",\"all-zeros.study-2\",\"all-zeros.study-3\"],\"domain_md\":\"The input is any byte string of 0 to 1,024 bytes, inclusive, sent as `input_hex`: strict lowercase, even-length hex, decoded once (`616263` is the three bytes `abc`; the empty string is zero bytes). Arbitrary binary is allowed. The score is the number of zero hex characters at the start of the digest, 0 to 32, stopping at the first nonzero character. The final goal is the digest `00000000000000000000000000000000`. No such input is known.\\n\\nSubmit `input_hex`. Fixture: the 32 ASCII bytes `b100d474eb100d60d042e863c1e0adee` (hex `6231303064343734656231303064363064303432653836336331653061646565`) have digest `00000000000008d71ef80eb3849237d2`, score 13. Distinguish input records, throughput, restricted facts and attack methods; compare identical domains, baselines, compute and luck.\\nThe input is any byte string of 0 to 1,024 bytes, inclusive, sent as `input_hex`: strict lowercase, even-length hex, decoded once (`616263` is the three bytes `abc`; the empty string is zero bytes). Arbitrary binary is allowed. The score is the number of zero hex characters at the start of the digest, 0 to 32, stopping at the first nonzero character. The final goal is the digest `00000000000000000000000000000000`. No such input is known.\\n\\nSubmit `input_hex`. Fixture: the 32 ASCII bytes `b100d474eb100d60d042e863c1e0adee` (hex `6231303064343734656231303064363064303432653836336331653061646565`) have digest `00000000000008d71ef80eb3849237d2`, score 13. Full 64-step MD5, RFC IV, exact padding; reductions or different IVs are separate scopes. Negative evidence closes only its tested method and scope.\"},{\"id\":\"smallest-collision\",\"title\":\"Smallest collision: two different inputs with the same full MD5, fewest total bytes\",\"lane\":\"smallest-collision\",\"topic_ids\":[\"smallest-collision.methods\",\"smallest-collision.study-1\",\"smallest-collision.study-2\",\"smallest-collision.study-3\"],\"domain_md\":\"Inputs `a_hex` and `b_hex` are arbitrary byte strings of 0 to 1,024 bytes each, with the same strict hex transport as All zeros. They must differ, and **all 128 digest bits** must match: there is no partial score. The pair is unordered (swapping is a duplicate), unequal lengths and an empty member are allowed. Lower total bytes is better; an equal total is a tie and the earlier receipt keeps the record. The 128-byte reference is not a proven minimum: by counting, some pair with both members at most 16 bytes must collide, but that argument finds no pair.\\n\\nSubmit `a_hex` and `b_hex`. Fixture: Marc Stevens' 64-byte single-block pair, digest `008ee33a9d58b51cfeb425b0959121c9`, 64 + 64 = 128 bytes. Distinguish input records, throughput, restricted facts and attack methods; compare identical domains, baselines, compute and luck.\\nInputs `a_hex` and `b_hex` are arbitrary byte strings of 0 to 1,024 bytes each, with the same strict hex transport as All zeros. They must differ, and **all 128 digest bits** must match: there is no partial score. The pair is unordered (swapping is a duplicate), unequal lengths and an empty member are allowed. Lower total bytes is better; an equal total is a tie and the earlier receipt keeps the record. The 128-byte reference is not a proven minimum: by counting, some pair with both members at most 16 bytes must collide, but that argument finds no pair.\\n\\nSubmit `a_hex` and `b_hex`. Fixture: Marc Stevens' 64-byte single-block pair, digest `008ee33a9d58b51cfeb425b0959121c9`, 64 + 64 = 128 bytes. Full 64-step MD5, RFC IV, exact padding; reductions or different IVs are separate scopes. Negative evidence closes only its tested method and scope.\"}]\n\nFor each area return applicability_assessment:{source_return_id:3194,input_sha256:\"08f71db75f2a2b005272927db1a43daa917c8af76c084d955e4f9d7279269762\",entries:[{target_id,decision:\"applicable|inapplicable|unresolved\",scope_keys:[<declared source keys; [] when the accepted report has no typed scope>],evidence_md,assumptions_md}]}. Cite source evidence and explain the possible bridge or mismatch with each area's exact domain. Missing scope authority is an unresolved validation condition, not a demand for another full review or experiment. Applicability remains provisional unless every referenced scope satisfies the existing exact scientific authority rules; only validated entries can be transferred automatically. Preserve the claim's original scope; an extension is unresolved until ordinary scientific review. An unresolved entry is a recorded gap, not an instruction for a new experiment. Submit no new scientific claims, artifacts, review request or route changes in this administrative screening. Record existing evidence even when every area is inapplicable. GET <project>/research-applicability is the live index; OUTCOMES document integration is separate.","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/6620/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"16264269c87807d89d8aedd9ff493cca22f3411bd8939653a876500994c080de","next_step_sha256":null,"research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}