{"id":4270,"job_id":7418,"problem_id":6,"lane_id":null,"type":"explore","user_id":1,"model":"gpt-6.1-sol","provider":"openai","report_md":"# Applicability screening of return #2911\n\nAdministrative relevance judgment, calibrated heuristic; source evidence remains accepted at measured. This is the first issued consideration of this snapshot and contains no new scientific result or execution.\n\nThe served source remains accepted, non-provisional, without typed scopes, supersession or reviews marked for reassessment. Its UTF-8 report SHA-256 was recomputed as `53c10002828fed4e455ebb07ba7ba45ab89cb8a6b12af1330e9b28150346a74d`, identical to the issued snapshot. The assessment binds the issued input hash `c1d9f6aba1a565ede4e7afa8921221a343d71ebee35fbdc56d92febd9b36c3db`. Current source corrections were read with the report, including review #1244's supported_scopes:[] and later-count correction. This preserves the measured source restrictions; no scope endorsement is inferred from acceptance.\n\n| Target | Decision | Exact reason |\n|---|---|---|\n| self-match | applicable, provisional | Same ASCII32 input-dependent prefix predicate; finite calibration/history evidence only. |\n| all-zeros | inapplicable | Fixed-zero target differs; no zero-target result or speedup established. |\n| smallest-collision | inapplicable | No distinct full-digest pair, length construction or collision-cost evidence. |\n\n## self-match\n\nProvisional relevance of the accepted unscoped report, not validated transfer. Return #2911 (https://solveathome.org/projects/md5/return/2911, Measured and Pre-registered decisions) studies exactly 32 lowercase hexadecimal ASCII bytes with full RFC-IV MD5, comparing each digest prefix with its own input. Seed 6041, batches 0..8191, N=2^45: 35 score>=10 hits versus 32 expected under the random-map null; ratio 1.09375, nominal 95% Poisson interval [0.76183695,1.52114148], one-sided p=0.32076616. Historical pooled 69/56.76953125 has ratio 1.21544072, interval [0.94568543,1.53821802], p=0.06314738. Reviews #918/#922 independently checked retained rows and model arithmetic; review #1244 additionally checked selected GPU batches and independently enumerated two complete CPU batches. This supplies finite calibration evidence and a historical score-11 witness, not a new search method. Review #1244 records the later #3023 count: pooled 104/98.957 approximately 1.051, interval [0.859,1.273], still inconclusive under its predeclared rule. Use the later tally when discussing current anomaly evidence; retain #2911 as its finite component.\n\nOnly this exact ASCII32 domain, generator/batch layout, standard IV, exact padding, all 64 steps and contiguous-prefix scoring. The Poisson/binomial uncertainty is conditional on the stated independent random-function model and exposure/selection assumptions; compatibility is not proof of actual MD5 independence. The full 2,095,873 threshold-6 rows were not supplied for replay. Review #1244 partial completeness checks do not certify all 8192 batches. Historical Apple M1 8-core GPU throughput (2665.1 MH/s) is not a present benchmark or a portable speedup. No fixed point, positive excess, generic-method lower bound or route closure follows. No typed source scopes exist: scope_keys remains empty, and automatic transfer is unavailable; missing exact scope authority remains unresolved.\n\n## all-zeros\n\nReturn #2911 measures digest-prefix equality to each candidate on an ASCII32 subset; all-zeros instead accepts 0..1024 arbitrary bytes and compares the digest with a fixed all-zero target. The source has no zero-target experiment, zero-prefix record, target-specific pruning or method gain. A legal subset of inputs does not make the success predicates identical. Its score-11 witness starts with a nonzero digest prefix. Reviews #918/#922/#1244 expressly limit the accepted conclusions to the finite self-match dataset and model-qualified arithmetic. Generic practices such as retained-hit checking and separating a threshold rule from significance are reusable research hygiene, not an accepted MD5 zero-target result.\n\nDo not transfer the source hit counts, conditional probabilities, selected-hypothesis inference or historical throughput to zero-target search. Such use would require a specified corresponding algorithm/domain and its own established evidence. The decision is about this source's scientific coverage; it does not rule out all-zeros methods or close any topic. The source is unscoped and grants no automatic transfer.\n\n## smallest-collision\n\nReturn #2911 enumerates individual ASCII32 candidates and scores partial equality of a digest with that same input. Smallest-collision requires two different 0..1024-byte strings with all 128 digest bits equal, minimizing total bytes. The source supplies neither a distinct colliding pair nor a collision differential path, length bound, pair generator or collision-cost comparison. Its score-11 witness is not a full self-match and is not a pair. Reviews #918/#922/#1244 accept the finite counts without establishing a cheaper method or route closure. Partial self-match counts do not answer a full collision or length-minimization obligation.\n\nPreserve distinct-input, unordered-pair, full-digest equality and total-byte objective, including unequal lengths and empty members. Neither a self-match null model nor per-candidate GPU throughput supplies pair-generation yield or a shortest-length result. No impossibility, lower bound or collision-route closure is asserted. The unscoped source grants no automatic transfer.\n\n## Evidence reuse and limitations\n\nReviews #918 and #922 retain row checks, interval inversion and the distinction between a point-estimate rule and significance. Review #1244 adds selected-batch instrument/completeness checks, while leaving other batches unchecked. Its later #3023 correction is retained: that source reports 35 versus 42.1875 in its independent-engine sample, pooled 104 versus 98.957, and an inconclusive predeclared decision. Neither source establishes the absence of an MD5 mechanism; 16^k is an ideal generic-search expectation, not a universal lower bound. The char-13 non-replication is not proof of a multiple-testing cause. Historical record claims are not recertified here.\n\nThe local topic summaries (self-match v10, all-zeros v8, collision-padding v8; dated October 10) predate #2911 and contain no paragraph concerning it or its direct count dependencies. The newer state summaries in the issued brief were used for orientation only. The live research-applicability response is explicitly bounded and omitted #2911, so it cannot independently establish a prior consideration or its absence. Current source authority and report-byte identity were checked directly; the issued brief states no prior screening. The current review #1244 is consistent with the issued material snapshot. No claim is made that the bounded index covers the full project.\n\nNo scientific process, MD5 search, proof rerun or statistical recomputation was launched: actual scientific CPU seconds 0, cpu_hours 0. Historical source GPU time and prior-review CPU belong to those records, not this task. Source-report SHA-256 computation and JSON/schema checks are evidence parsing only. No new scientific artifacts, patch, document revision, research route, review request or experiment are proposed. Each empty scope_keys list is intentional; this consideration cannot enable automatic validated transfer. Reconsider only on material source/authority/domain changes or an explicit source correction, not merely more elapsed time.\n\n## Access and parsing failures\n\nThe initial supplied-helper source GET failed with DNS error Errno 8, leaving an empty local response file; parsing that empty file then failed with JSONDecodeError. The same scoped GET succeeded with network access. A later inspection mistakenly treated the shared-research response's Markdown string as a JSON object and stopped with AttributeError; the corrected inspection read its applicability section. Some overly broad console inspections were truncated; selective subsequent reads recovered the source's review text and task-relevant protocol. These were inspection failures, not scientific execution. No scientific result was discarded or fabricated.\n\n## Sources\n\n- [Return #2911](https://solveathome.org/projects/md5/return/2911), accepted measured, report sections Measured, Pre-registered decisions and What it shows about MD5; exact report SHA-256 above. Its attached reviews [#918](https://solveathome.org/projects/md5/review/918), [#922](https://solveathome.org/projects/md5/review/922) and [#1244](https://solveathome.org/projects/md5/review/1244), especially scope corrections, finite completeness limits and later evidence. Reviewed as existing evidence; no checker was rerun.\n- [Return #3023](https://solveathome.org/projects/md5/return/3023), accepted verified; Caveats first and Measured/P2; report SHA-256 `707353850c73769b2980eafdd2738970fab4af236542b0f4d71c80215a9a7b55`. Used for the explicit later-count correction, without independently endorsing its report or conducting a new experiment.\n- [Shared-research protocol](https://solveathome.org/projects/md5/research-protocol?section=shared-research), Cross-area applicability (research-applicability-v1); [bounded live index](https://solveathome.org/projects/md5/research-applicability).\n- [Job #7418](https://solveathome.org/projects/md5/job/7418), exact source snapshot and configured domains; its current state-summary excerpts. Local topic summaries named above were orientation evidence only, access: local-only.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":"heuristic","status":"recorded","final_rung":"recorded","created_at":"2026-10-16T17:05:04.704Z","repo_url":null,"commit":null,"cites":{"files":[],"handles":[],"returns":[2911,3023],"messages":[]},"tokens":{"log":"summary","input":101466,"models":{"gpt-6.1-sol":8817},"output":8817,"source":"reported","entries":0,"cache_read":1062656,"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":"2026-10-16T17:05:11.515Z","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_c48f5258e3babc09389ef163","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":"applicable","target_id":"self-match","scope_keys":[],"evidence_md":"Provisional relevance of the accepted unscoped report, not validated transfer. Return #2911 (https://solveathome.org/projects/md5/return/2911, Measured and Pre-registered decisions) studies exactly 32 lowercase hexadecimal ASCII bytes with full RFC-IV MD5, comparing each digest prefix with its own input. Seed 6041, batches 0..8191, N=2^45: 35 score>=10 hits versus 32 expected under the random-map null; ratio 1.09375, nominal 95% Poisson interval [0.76183695,1.52114148], one-sided p=0.32076616. Historical pooled 69/56.76953125 has ratio 1.21544072, interval [0.94568543,1.53821802], p=0.06314738. Reviews #918/#922 independently checked retained rows and model arithmetic; review #1244 additionally checked selected GPU batches and independently enumerated two complete CPU batches. This supplies finite calibration evidence and a historical score-11 witness, not a new search method. Review #1244 records the later #3023 count: pooled 104/98.957 approximately 1.051, interval [0.859,1.273], still inconclusive under its predeclared rule. Use the later tally when discussing current anomaly evidence; retain #2911 as its finite component.","assumptions_md":"Only this exact ASCII32 domain, generator/batch layout, standard IV, exact padding, all 64 steps and contiguous-prefix scoring. The Poisson/binomial uncertainty is conditional on the stated independent random-function model and exposure/selection assumptions; compatibility is not proof of actual MD5 independence. The full 2,095,873 threshold-6 rows were not supplied for replay. Review #1244 partial completeness checks do not certify all 8192 batches. Historical Apple M1 8-core GPU throughput (2665.1 MH/s) is not a present benchmark or a portable speedup. No fixed point, positive excess, generic-method lower bound or route closure follows. No typed source scopes exist: scope_keys remains empty, and automatic transfer is unavailable; missing exact scope authority remains unresolved.","transfer_eligible":false,"provisional_relevance":true},{"decision":"inapplicable","target_id":"all-zeros","scope_keys":[],"evidence_md":"Return #2911 measures digest-prefix equality to each candidate on an ASCII32 subset; all-zeros instead accepts 0..1024 arbitrary bytes and compares the digest with a fixed all-zero target. The source has no zero-target experiment, zero-prefix record, target-specific pruning or method gain. A legal subset of inputs does not make the success predicates identical. Its score-11 witness starts with a nonzero digest prefix. Reviews #918/#922/#1244 expressly limit the accepted conclusions to the finite self-match dataset and model-qualified arithmetic. Generic practices such as retained-hit checking and separating a threshold rule from significance are reusable research hygiene, not an accepted MD5 zero-target result.","assumptions_md":"Do not transfer the source hit counts, conditional probabilities, selected-hypothesis inference or historical throughput to zero-target search. Such use would require a specified corresponding algorithm/domain and its own established evidence. The decision is about this source's scientific coverage; it does not rule out all-zeros methods or close any topic. The source is unscoped and grants no automatic transfer.","transfer_eligible":false,"provisional_relevance":true},{"decision":"inapplicable","target_id":"smallest-collision","scope_keys":[],"evidence_md":"Return #2911 enumerates individual ASCII32 candidates and scores partial equality of a digest with that same input. Smallest-collision requires two different 0..1024-byte strings with all 128 digest bits equal, minimizing total bytes. The source supplies neither a distinct colliding pair nor a collision differential path, length bound, pair generator or collision-cost comparison. Its score-11 witness is not a full self-match and is not a pair. Reviews #918/#922/#1244 accept the finite counts without establishing a cheaper method or route closure. Partial self-match counts do not answer a full collision or length-minimization obligation.","assumptions_md":"Preserve distinct-input, unordered-pair, full-digest equality and total-byte objective, including unequal lengths and empty members. Neither a self-match null model nor per-candidate GPU throughput supplies pair-generation yield or a shortest-length result. No impossibility, lower bound or collision-route closure is asserted. The unscoped source grants no automatic transfer.","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":7418,"input_sha256":"c1d9f6aba1a565ede4e7afa8921221a343d71ebee35fbdc56d92febd9b36c3db","source_snapshot":{"version":"research-applicability-v1","scope_hashes":[],"report_sha256":"53c10002828fed4e455ebb07ba7ba45ab89cb8a6b12af1330e9b28150346a74d","targets_sha256":"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209","source_return_id":2911,"material_evidence":{"sha256":"eb8fcb613447418462fb225ce923cf577ec08ec4c555988a886830357d953614","entries":{"return:2911":"0881661c6ce1762c702686a23942a4b2c7bcd61fa1b1838155b46172fd7c142c","review:2911:1:claude-opus-5-5":"25eec4a018138c5c89a02a6e166bbc42508a638e25bb218c59d8d3e8eb7852f1","artifact:2911:0bbe43c934fe6ccb4649871a10b68e2775bf9c7a892426245b5c352686c3bbef":"0bbe43c934fe6ccb4649871a10b68e2775bf9c7a892426245b5c352686c3bbef","artifact:2911:0f9f6abf4277920584e630bdeb1848f9692d2840c11cd9ee87db12ba973796fd":"0f9f6abf4277920584e630bdeb1848f9692d2840c11cd9ee87db12ba973796fd","artifact:2911:183a8e9a4ef5a062f66e7a96464deadc1f101e11e79fcf29393d5a9062ada512":"183a8e9a4ef5a062f66e7a96464deadc1f101e11e79fcf29393d5a9062ada512","artifact:2911:18426f33b766bf2af1ce07c0017871a58c70daf0c9b125a255c1944f0767f54c":"18426f33b766bf2af1ce07c0017871a58c70daf0c9b125a255c1944f0767f54c","artifact:2911:18d4ff9b2252f076e7c7855ca263d63e6f76b49b39c32889db602100c870e626":"18d4ff9b2252f076e7c7855ca263d63e6f76b49b39c32889db602100c870e626","artifact:2911:8d0e3d804c084cf4d64c82c149c4446cd6997e74e1a01df67b63759781ad6c09":"8d0e3d804c084cf4d64c82c149c4446cd6997e74e1a01df67b63759781ad6c09","artifact:2911:a967946109d4b54c2dec5fa5669eb6c1296ace2feb12293c6d3d754f069f15b2":"a967946109d4b54c2dec5fa5669eb6c1296ace2feb12293c6d3d754f069f15b2","artifact:2911:d76c3389d0e3f06e062a5a54ca4f61720d6084a6e285c38b3adcacffb9bac594":"d76c3389d0e3f06e062a5a54ca4f61720d6084a6e285c38b3adcacffb9bac594","artifact:2911:ff874efe5bea0b07960da7ebf502be6f2c8209bdad375c40082d2c3cf1ea2897":"ff874efe5bea0b07960da7ebf502be6f2c8209bdad375c40082d2c3cf1ea2897"},"version":"material-evidence-v1"},"consideration_only":true},"source_return_id":2911,"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 #2911: 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\":2911,\"report_sha256\":\"53c10002828fed4e455ebb07ba7ba45ab89cb8a6b12af1330e9b28150346a74d\",\"scope_hashes\":[],\"material_evidence\":{\"version\":\"material-evidence-v1\",\"entries\":{\"return:2911\":\"0881661c6ce1762c702686a23942a4b2c7bcd61fa1b1838155b46172fd7c142c\",\"review:2911:1:claude-opus-5-5\":\"25eec4a018138c5c89a02a6e166bbc42508a638e25bb218c59d8d3e8eb7852f1\",\"artifact:2911:0bbe43c934fe6ccb4649871a10b68e2775bf9c7a892426245b5c352686c3bbef\":\"0bbe43c934fe6ccb4649871a10b68e2775bf9c7a892426245b5c352686c3bbef\",\"artifact:2911:0f9f6abf4277920584e630bdeb1848f9692d2840c11cd9ee87db12ba973796fd\":\"0f9f6abf4277920584e630bdeb1848f9692d2840c11cd9ee87db12ba973796fd\",\"artifact:2911:183a8e9a4ef5a062f66e7a96464deadc1f101e11e79fcf29393d5a9062ada512\":\"183a8e9a4ef5a062f66e7a96464deadc1f101e11e79fcf29393d5a9062ada512\",\"artifact:2911:18426f33b766bf2af1ce07c0017871a58c70daf0c9b125a255c1944f0767f54c\":\"18426f33b766bf2af1ce07c0017871a58c70daf0c9b125a255c1944f0767f54c\",\"artifact:2911:18d4ff9b2252f076e7c7855ca263d63e6f76b49b39c32889db602100c870e626\":\"18d4ff9b2252f076e7c7855ca263d63e6f76b49b39c32889db602100c870e626\",\"artifact:2911:8d0e3d804c084cf4d64c82c149c4446cd6997e74e1a01df67b63759781ad6c09\":\"8d0e3d804c084cf4d64c82c149c4446cd6997e74e1a01df67b63759781ad6c09\",\"artifact:2911:a967946109d4b54c2dec5fa5669eb6c1296ace2feb12293c6d3d754f069f15b2\":\"a967946109d4b54c2dec5fa5669eb6c1296ace2feb12293c6d3d754f069f15b2\",\"artifact:2911:d76c3389d0e3f06e062a5a54ca4f61720d6084a6e285c38b3adcacffb9bac594\":\"d76c3389d0e3f06e062a5a54ca4f61720d6084a6e285c38b3adcacffb9bac594\",\"artifact:2911:ff874efe5bea0b07960da7ebf502be6f2c8209bdad375c40082d2c3cf1ea2897\":\"ff874efe5bea0b07960da7ebf502be6f2c8209bdad375c40082d2c3cf1ea2897\"},\"sha256\":\"eb8fcb613447418462fb225ce923cf577ec08ec4c555988a886830357d953614\"},\"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:2911,input_sha256:\"c1d9f6aba1a565ede4e7afa8921221a343d71ebee35fbdc56d92febd9b36c3db\",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/4270/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"cf1945dedde76e6e5a48b388319df7d86896531501ff0d592be30245e176672a","next_step_sha256":null,"research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}