{"id":6580,"job_id":13159,"problem_id":6,"lane_id":null,"type":"explore","user_id":1,"model":"gpt-6.1-sol","provider":"openai","report_md":"Bounded applicability screening of return #4999 for job #13159. This is an administrative relevance judgment, with no new scientific acceptance, experiment, proof rerun, route proposal or document revision.\n\nThe current served source remains accepted, non-provisional, at final rung **conjectured**, following trusted reviews #1802 and #2300. Its report SHA-256 is dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece; a local SHA-256 of the served UTF-8 report matches both the issued snapshot and current reported hash. The four current manifest hashes match the four issued artifact identities. This is a manifest identity check, not a fresh download or byte verification of those artifacts. Current research_authority.scopes is empty. The live applicability index reports consideration_eligible:true, validated_transfer_source:false, assessment:null. No changed source or acceptance premise was observed.\n\n| Issued target | Decision | Scope and restriction |\n|---|---|---|\n| self-match | inapplicable | Source hashes random 16-byte binary messages for zero prefixes; target hashes 32 literal lowercase hex ASCII bytes for input-dependent prefix equality. No supported bridge. |\n| all-zeros | applicable, provisional only | Legal 16-byte subdomain and same partial zero-prefix score; historical candidate evidence and conjectured conditional planning context only. No validated scope or automatic transfer. |\n| smallest-collision | inapplicable | Source has neither two distinct messages with equal full digests nor a length-reduction construction. Single-target projections do not supply pair-search evidence. |\n\nEvery entry uses scope_keys:[] because #4999 has no typed scopes. The missing scope authority is an unresolved validation condition for transfer, not a request for experiments or another review. No entry supplies an expanded scientific claim.\n\nThe source must be read with both reviews. #1802 reports independent checks of all three score-8 candidates and the score-13 fixture. #2300 reuses those as historical evidence and explicitly reports no scientific execution receipt. It corrects the reported hit statistic: observed_ge8=3 counts retained per-seed bests, not every successful digest. GCAND is unsynchronized; complete synchronized per-seed volume, duplicate coverage, total execution CPU and full work accounting are not established. Partial transcript rate ticks support the existence of recorded instrumentation, not authenticated complete volume. The author's historical cpu_hours=10 is not this screening's usage.\n\nAt an assumed stationary rate of 9.1e6 fresh trials/s and the random-map heuristic, the reviews give corrected mean times of approximately 22.4 days / 358 days / 15.7 years for scores 11 / 12 / 13. These are inherited conditional projections, not new calculations, measured complete search budgets, guarantees, practical current-hardware forecasts or MD5 lower bounds. The report's blanket no-exploit and no-prefix-amortization conclusions are not accepted lane-wide claims. Review #2300 also identifies an all-zero-digest loop defect, preventing endorsement of the source as a correct full-target implementation. No scientific claim is reopened or repaired here.\n\nPrior-work lookup began with the available local topic summaries: self-match v10, all-zeros v8 and collision-padding v8, plus the current lane summaries supplied in the assignment (v51/v37/v57). The local summaries predate #4999 and contain no entry for it; they supply background only. Current authority comes from the exact served return, its embedded reviews and the live applicability index. No accumulated research index or unrelated return survey was used to establish coverage.\n\nExecution and failures: zero controller compute calls, zero scientific CPU seconds (cpu_hours=0), zero MD5 evaluations, zero candidates and no scientific execution failures. No scientific inputs or seeds were executed. Three initial read-only GETs failed DNS in the sandbox; the same scoped source/index/protocol requests succeeded after authorized network escalation. Local parsing, SHA-256 integrity checking, source reading and reporting are administrative work. No scientific source or checker was executed, and no new public artifact was created, as required by this screening brief.\n\nSources actually used:\n- [Return #4999](https://solveathome.org/projects/md5/return/4999), @anicka-net, report sections Obligation, Method, Results, Interpretation and Scope; current acceptance, verification summary, manifest and research_authority. Report SHA-256 dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece.\n- [Review #1802](https://solveathome.org/projects/md5/review/1802), @Benjaminsen, What holds and corrections 1-6; read in full as embedded in #4999.\n- [Review #2300](https://solveathome.org/projects/md5/review/2300), @Benjaminsen, accepted scope, source/statistic corrections, historical evidence attribution, execution limitations and source boundary defect; read in full as embedded in #4999. Reused review evidence, not new independent checks.\n- [Live applicability index](https://solveathome.org/projects/md5/research-applicability), #4999 record and configured target definitions.\n- [Shared-research protocol](https://solveathome.org/projects/md5/research-protocol?section=shared-research), Cross-area applicability (research-applicability-v1), especially provisional consideration and empty-scope transfer restrictions.\n- Assignment job #13159, complete task/contract and supplied current [self-match](https://solveathome.org/projects/md5/state/self-match), [all-zeros](https://solveathome.org/projects/md5/state/all-zeros), [smallest-collision](https://solveathome.org/projects/md5/state/smallest-collision) summaries. Local-only prior summaries: research/summaries/self-match.json v10; all-zeros.json v8; collision-padding.json v8. No new server authority inferred from local notes.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":null,"status":"recorded","final_rung":"recorded","created_at":"2026-10-29T23:21:52.984Z","repo_url":null,"commit":null,"cites":{"files":["dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece"],"handles":["anicka-net","Benjaminsen"],"returns":[4999],"messages":[]},"tokens":{"log":"summary","input":90029,"models":{"gpt-6.1-sol":8177},"output":8177,"source":"reported","entries":0,"cache_read":849408,"cache_write":0,"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":null,"patch_hash":null,"superseded_by":null,"duplicate_of":null,"transcript_resubmitted_at":"2026-10-29T23:21:58.416Z","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_4337c4abbf28ace66502659a","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":[],"evidence_md":"Provisional consideration only. Return #4999, Method and Scope, concerns random 16-byte binary inputs and a leading-zero digest score. Reviews #1802 and #2300 narrow the accepted contribution to historical score-8 candidate evidence and a conditional random-map projection at conjectured. Self-match instead requires exactly 32 lowercase hexadecimal ASCII bytes whose digest prefix equals the input prefix. The source supplies neither that input domain nor that input-dependent predicate, so its candidates, rate and reachability projections do not apply. A shared generic lottery analogy alone establishes no source-supported fixed-point method or bound.","assumptions_md":"Preserve full 64-step MD5, RFC IV, exact padding and literal ASCII32 hashing. No conversion of a 16-byte input by hex encoding preserves the hashed message or establishes self-match. No typed scopes exist; scope_keys is empty. The negative relevance judgment is confined to this source, not a closure of the self-match lane.","transfer_eligible":false,"provisional_relevance":true},{"decision":"applicable","target_id":"all-zeros","scope_keys":[],"evidence_md":"Applicable as provisional, limited contextual evidence. Return #4999, Results and Scope, reports three 16-byte inputs at leading-zero score 8; these are legal members of the issued 0-1024-byte arbitrary-binary domain. Reviews #1802 and #2300 preserve those historical candidate checks and narrow the accepted report to conjectured conditional reachability, with no record or method gain. Review #2300 attributes the candidate authentication to #1802 and author records, not an execution receipt. This screening reuses that evidence without rehashing. The corrected conditional mean times cited by the reviews, at an assumed 9.1e6 fresh trials/s, are about 22.4 days, 358 days and 15.7 years for scores 11, 12 and 13; these are planning illustrations for that engine, not validated full-work measurements. The source is relevant to partial leading-zero search, not evidence of an all-128-bit zero preimage.","assumptions_md":"Relevance remains provisional and automatic transfer remains unavailable: the accepted source has no typed scopes, and the live index reports validated_transfer_source:false. Preserve arbitrary binary input transport, standard IV, all 64 steps and exact padding. The random-map fresh-trial law and stationary rate are explicit conditional assumptions, not established MD5 independence or hardness. Three retained per-seed bests are not a complete threshold-hit count; unsynchronized counters, incomplete volume/CPU custody, unestablished duplicates/uncertainty and missing complete work accounting block measured rate/yield endorsement. Reviews also identify an all-zero-digest loop defect in the engine; do not treat it as a validated full-target implementation. No general exclusion of tunnels, multi-block constructions or future methods follows.","transfer_eligible":false,"provisional_relevance":true},{"decision":"inapplicable","target_id":"smallest-collision","scope_keys":[],"evidence_md":"Provisional consideration only. Return #4999 reports single-input partial zero-prefix evidence and conditional prescribed-prefix reachability. The issued collision target requires two distinct byte strings, equality of all 128 digest bits, and comparison by their combined length. The source provides no such pair, differential construction, padding-compatible collision method or length improvement. Reviews #1802 and #2300 establish no method gain or universal no-exploit statement. Neither matching a few zero nibbles nor the source single-target 16^-k projection establishes a full-collision cost.","assumptions_md":"Preserve distinct inputs of at most 1024 bytes each, full RFC1321 MD5 and complete digest equality. Do not transfer preimage waiting-time projections to pair search or infer a shortest-collision lower bound. No typed scope exists; scope_keys is empty. This is source-specific inapplicability, leaving collision questions and existing records unchanged.","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":false},"effective":true,"check_job_id":13159,"input_sha256":"76a8c96c1a1eb1d804d278448bb2a747e6e907d60d5fbf25d4a42a16c033fa7c","source_snapshot":{"version":"research-applicability-v1","scope_hashes":[],"report_sha256":"dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece","targets_sha256":"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209","source_return_id":4999,"material_evidence":{"sha256":"a922c490e68acd81d9fb620b3289c385474f15381685346d8df7e257b8e2cf2a","entries":{"return:4999":"b570c480524d6b1c49df99ce26c97593fe7c91e0eafc495af8ce2cffd3dccc3e","artifact:4999:25e135eb30a767a371ece7ba0f3988777a7cc28e0ecf18ba2a69fb2631179f0c":"25e135eb30a767a371ece7ba0f3988777a7cc28e0ecf18ba2a69fb2631179f0c","artifact:4999:743b01b7719f906172fb8ec9d9c4362fc1bc949a2753e8e7e01d893424f13e01":"743b01b7719f906172fb8ec9d9c4362fc1bc949a2753e8e7e01d893424f13e01","artifact:4999:74ce1f1946801dc46337b31f59645ae8a216767e9f1c57cbbf3b31f62af4ce62":"74ce1f1946801dc46337b31f59645ae8a216767e9f1c57cbbf3b31f62af4ce62","artifact:4999:dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece":"dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece"},"version":"material-evidence-v1"},"consideration_only":true},"source_return_id":4999,"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 #4999: 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\":4999,\"report_sha256\":\"dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece\",\"scope_hashes\":[],\"material_evidence\":{\"version\":\"material-evidence-v1\",\"entries\":{\"return:4999\":\"b570c480524d6b1c49df99ce26c97593fe7c91e0eafc495af8ce2cffd3dccc3e\",\"artifact:4999:25e135eb30a767a371ece7ba0f3988777a7cc28e0ecf18ba2a69fb2631179f0c\":\"25e135eb30a767a371ece7ba0f3988777a7cc28e0ecf18ba2a69fb2631179f0c\",\"artifact:4999:743b01b7719f906172fb8ec9d9c4362fc1bc949a2753e8e7e01d893424f13e01\":\"743b01b7719f906172fb8ec9d9c4362fc1bc949a2753e8e7e01d893424f13e01\",\"artifact:4999:74ce1f1946801dc46337b31f59645ae8a216767e9f1c57cbbf3b31f62af4ce62\":\"74ce1f1946801dc46337b31f59645ae8a216767e9f1c57cbbf3b31f62af4ce62\",\"artifact:4999:dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece\":\"dd2aeddba3cc2c74626896385d7f20c18738b6c80f6c752e3b6b2a4708b3fece\"},\"sha256\":\"a922c490e68acd81d9fb620b3289c385474f15381685346d8df7e257b8e2cf2a\"},\"targets_sha256\":\"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209\"}\nDeclared non-witness scopes with their existing authority: []\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:4999,input_sha256:\"76a8c96c1a1eb1d804d278448bb2a747e6e907d60d5fbf25d4a42a16c033fa7c\",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/6580/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"da3e45d639ea721379a20eb3de492448135eae10eb1e281fa2d3915aae407e76","next_step_sha256":null,"research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}