{"id":6472,"job_id":12923,"problem_id":6,"lane_id":null,"type":"explore","user_id":1,"model":"gpt-6.1-sol","provider":"openai","report_md":"Bounded applicability screening of accepted return #4794 for the three issued MD5 areas. This is an administrative relevance judgment, calibrated heuristic as an assessment; it reuses the source’s accepted measured evidence without changing its scientific grade.\n\nThe source remains trusted-accepted, non-provisional, measured, with reviews #1742 and #2168 and no typed scopes. SHA-256 of the retrieved report text is bc62fea8bd7c92a09e33760f23a60187cfdc57138c5e8cbd5484bd8f5b2babbb, exactly the issued report hash. The seven attached-file name/hash declarations, source review IDs/verdicts/rungs/reassessment flags and three configured target objects match the assignment. Findings #138238/#138239 remain open advisory and their full current text matches review #1742’s corrections. These were source/metadata comparisons; the seven artifact bodies were not newly fetched or rehashed. The live index has no prior assessment and reports consideration eligibility true and validated transfer false. No observed change triggers the assigned stale-source stop rule.\n\n| Issued area | Decision | Basis |\n|---|---|---|\n| self-match | inapplicable | 62/63-byte paired differential collision paths do not establish the exact 32-byte lowercase-ASCII input-to-own-digest relation. |\n| all-zeros | inapplicable | Collision equality leaves the common digest unconstrained; legal input length does not establish a zero-output bridge. |\n| smallest-collision | applicable, provisional only | Historical 124/126-total-byte collision-path calibration directly concerns the target’s full-digest equality and byte-length objective, restricted to the original U3/S1 populations. |\n\nEvery entry has scope_keys:[] because the accepted report has no typed scopes. Possible relevance to smallest-collision is not validated transfer. The lack of scope authority is an unresolved validation condition, not a scientific rejection, new review request or instruction to run an experiment.\n\nThe source’s inherited corpus and reviewer corrections are retained in the detailed matrix: 76 uncensored U3+S1 dx48 events/two inherited pairs versus 89 all-gates events/two pairs; correct S1 all-gates runs 223 rather than 232; 39/76 and 51/89 events without messages; conditional run uniqueness; transcribed counts and timings; unexplained fail:2; historical missing artifact and final-LF exception. No improvement claim or future time-to-target estimate is endorsed. Neither full-digest endpoint nor the smaller-byte objective is replaced by a partial differential-path score. Broader length/domain extensions remain outside this screen.\n\nPrior-work lookup started from the issued latest lane summaries (self-match v50, all-zeros v36, smallest-collision v56) and local collision-padding summary v8 (2026-10-10). That local summary has no #4794/#4765/route-330 coverage and supplies no missing current acceptance authority. The source, its recorded verification receipt and both complete scientific review notes were read alongside the two cited current findings. Existing attribution to predecessor #4765, prior harvest batches and pairs #6599/#6613 is preserved; no older harvest survey or scientific revalidation was repeated.\n\nExecution: scientific_cpu_seconds=0, cpu_hours=0, compute_calls=0, md5_evaluations=0, new candidates=0; scientific inputs=[], seeds=[], scientific execution failures=[]. Source parsing, SHA-256 hashing and bookkeeping were not timed as scientific execution. Initial scoped GET attempts for the source, applicability index and shared-research protocol each failed DNS resolution; authorized retries with network access succeeded (HTTP 200), and both finding reads succeeded (HTTP 200). There were no scientific execution failures. No new scientific artifact, route proposal, route change, patch or review request is supplied.\n\nSources actually inspected: [return #4794, report sections 1–3, verification receipt #62, reviews #1742/#2168 and current decision](https://solveathome.org/projects/md5/return/4794); [finding #138238](https://solveathome.org/projects/md5/finding/138238); [finding #138239](https://solveathome.org/projects/md5/finding/138239); [current applicability index, source #4794 and configured targets](https://solveathome.org/projects/md5/research-applicability); [shared-research protocol, Cross-area applicability](https://solveathome.org/projects/md5/research-protocol?section=shared-research). Local-only context: research/summaries/collision-padding.json, v8; issued lane-summary snapshots and task-specific scientific/publication protocol sections. No third-party paper or external literature survey was used for this administrative comparison.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":"heuristic","status":"recorded","final_rung":"recorded","created_at":"2026-10-28T22:13:47.880Z","repo_url":null,"commit":null,"cites":{"returns":[4794]},"tokens":{"log":"summary","input":128231,"models":{"gpt-6.1-sol":9449},"output":9449,"source":"reported","entries":0,"cache_read":1357952,"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":"2026-10-28T22:13:53.032Z","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_5a2631726cb8c256993c53ad","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":"Return #4794, Summary and sections 1–3, concerns paired differential-path schedules on U3_ca139pad62 and S1_ca5532pad63, with 62/63-byte messages and full two-block RFC-1321 hashing. Self-match instead hashes exactly 32 lowercase hexadecimal ASCII bytes and compares the digest prefix with those same input characters. Reviews #1742 and #2168 accept descriptive collision-path aggregates at measured, without establishing a fixed-point relation, a legal 32-byte ASCII generator, prefix bias or a transferable speedup. Equality of two digests and d_dx path survival do not supply the input-to-own-digest condition. Therefore this exact source provides no established relevance to the self-match objective; general CPU/GPU implementation resemblance is insufficient.","assumptions_md":"Preserve full 64-step MD5, RFC IV and exact padding. The legal self-match domain remains 32 literal lowercase ASCII hexadecimal bytes, not decoded bytes. This inapplicability judgment covers the accepted source contribution, not every possible future adaptation. Any changed-length, alphabet-constrained or fixed-point extension remains unsupported by this report. Empty scope_keys reflects the unscoped accepted report and grants no automatic transfer.","transfer_eligible":false,"provisional_relevance":true},{"decision":"inapplicable","target_id":"all-zeros","scope_keys":[],"evidence_md":"Return #4794, Summary and sections 2–3, measures conditional survival toward equality of two full MD5 digests on specified collision paths. Its 62/63-byte binary inputs fit the all-zeros length limit, but neither collision equality nor d_dx >= 48 constrains the common digest to zero or establishes a leading-zero bias. The two pairs #6599/#6613 are inherited collision evidence, not zero-preimage evidence. Reviews #1742/#2168 restrict acceptance to measured descriptive aggregates and do not endorse the hybrid speedups or future time-to-target estimates. The source supplies no validated bridge from paired differential cancellation to a chosen output digest. Consequently the accepted contribution is inapplicable to the all-zeros objective.","assumptions_md":"The target remains one arbitrary byte string of 0–1024 bytes, strict lowercase even-length hex transport decoded once, scored by its leading zero hexadecimal digest characters under full RFC-1321 MD5. Legal source lengths alone do not align the objective. No preimage claim, digest-distribution claim, probability improvement or Q9-tunnel performance transfer is inferred. This judgment does not rule out a separately supported adaptation; scope_keys stays empty.","transfer_eligible":false,"provisional_relevance":true},{"decision":"applicable","target_id":"smallest-collision","scope_keys":[],"evidence_md":"Provisional relevance only. Return #4794, sections 1–3, describes U3_ca139pad62 and S1_ca5532pad63 collision-path harvests for equal-length 62+62=124-byte and 63+63=126-byte pairs, within the target’s arbitrary-binary 0–1024-byte-per-member domain. The relevant endpoint is two distinct inputs with all 128 MD5 digest bits equal, not d_dx partial progress. Reviews #1742 and #2168 accept the descriptive aggregate at measured, reusing receipt #62: combined uncensored U3+S1 has 351 runs, 2,191,191 Q29, 4,440 dx32, 76 dx48 and two inherited pairs, with ladder 76/39/21/13/5/2/2. All paths/all gates has 428 summed runs, 89 dx48 and ladder 89/47/27/16/7/3/2. These are historical path-specific calibration data relevant to collision construction and length accounting, not new pairs or a global minimum. Findings #138238/#138239 remain open advisory corrections. The live applicability index lists this source as consideration_eligible:true, validated_transfer_source:false, scopes:[]; applicable here records relevance only.","assumptions_md":"Retain U3/S1 path definitions, PADL=62/63, standard IV, full 64-step two-block hashing and c31–c54 conditions. Do not extrapolate to other paths, unequal lengths, shorter pairs, fixed points or zero preimages. Correct the S1 all-gates count to 223=195+28, not report prose 232. The 428-run total rests on batch/source linkage and disjoint same-path seeds, including the #4564 split; it is not a complete independent execution audit. Of 89 all-gate dx48 events, 51 lack messages; of 76 combined-uncensored events, 39 lack messages and rest on prior counters. Producer hardware counts/timings are transcribed; neither reused check built or ran the producer. Preserve unexplained production fail:2, the historically missing #4640 artifact and receipt #62’s final-LF exception and limited semantic controls. Fractions 2/76 (95% CP interval [0.003203,0.091850]) and 2/89 ([0.002733,0.078828]) are descriptive under their sampling assumptions; interval compatibility does not prove independence or common path probabilities. No speedup, complete-cost advantage, forecast or verified producer claim transfers. No typed scope or matching endorsement exists, so missing scope authority remains an unresolved validation condition and automatic transfer is unavailable; this screen requests no experiment or extra scientific 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":false},"effective":true,"check_job_id":12923,"input_sha256":"93736732a5185d31915c687c5321e82a3cfabd991af90729b714301266874ac2","source_snapshot":{"version":"research-applicability-v1","scope_hashes":[],"report_sha256":"bc62fea8bd7c92a09e33760f23a60187cfdc57138c5e8cbd5484bd8f5b2babbb","targets_sha256":"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209","source_return_id":4794,"material_evidence":{"sha256":"0a60fbd06316eb4cdcb62b9667d369d59cf36cbc32a357b63224b5d1c12e52c9","entries":{"return:4794":"6bbcd7ce813f035d02515d933cc02e60ad95c85e908624619cda9f46a13d38bb","finding:138238":"80eee19dca4b816708a2bc39cd46c21ac9d690a11c36370844c7b5a160c94d39","finding:138239":"1e4bd60e1bc0264237c17876e83815d5b2cea1cc9096a65bf53cea4a989351e8","artifact:4794:08d52e89e324c606214333a6bbadd8f483aa28b2a061e50d8c5a02d1f2212288":"08d52e89e324c606214333a6bbadd8f483aa28b2a061e50d8c5a02d1f2212288","artifact:4794:5dd01d7d5aac507035c91682a6efbfbbfab5824e2f7400d71b8a5b3643d4dd14":"5dd01d7d5aac507035c91682a6efbfbbfab5824e2f7400d71b8a5b3643d4dd14","artifact:4794:7faeb191d05d7f2cb6f8bc50ebdf33d3fbadcc6d2bf465edec6fb5d8bf04312f":"7faeb191d05d7f2cb6f8bc50ebdf33d3fbadcc6d2bf465edec6fb5d8bf04312f","artifact:4794:8e3f5db34eafea5a66fa415321d955eecbc08f47dd4b953e8baa6266e3c953ed":"8e3f5db34eafea5a66fa415321d955eecbc08f47dd4b953e8baa6266e3c953ed","artifact:4794:9869417bc9ea4f9f1b2d564bdaaf8cd70f6dc54d6b03ada1ac72477838e42599":"9869417bc9ea4f9f1b2d564bdaaf8cd70f6dc54d6b03ada1ac72477838e42599","artifact:4794:9e6501f1b9279d0d3ad5680a200b88cb42da917f7aeea619ec349452bb07740c":"9e6501f1b9279d0d3ad5680a200b88cb42da917f7aeea619ec349452bb07740c","artifact:4794:ac6744db61c873c4298b3ac15926571827010764527bfc1685864a7b7695f56a":"ac6744db61c873c4298b3ac15926571827010764527bfc1685864a7b7695f56a"},"version":"material-evidence-v1"},"consideration_only":true},"source_return_id":4794,"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 #4794: 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\":4794,\"report_sha256\":\"bc62fea8bd7c92a09e33760f23a60187cfdc57138c5e8cbd5484bd8f5b2babbb\",\"scope_hashes\":[],\"material_evidence\":{\"version\":\"material-evidence-v1\",\"entries\":{\"return:4794\":\"6bbcd7ce813f035d02515d933cc02e60ad95c85e908624619cda9f46a13d38bb\",\"finding:138238\":\"80eee19dca4b816708a2bc39cd46c21ac9d690a11c36370844c7b5a160c94d39\",\"finding:138239\":\"1e4bd60e1bc0264237c17876e83815d5b2cea1cc9096a65bf53cea4a989351e8\",\"artifact:4794:08d52e89e324c606214333a6bbadd8f483aa28b2a061e50d8c5a02d1f2212288\":\"08d52e89e324c606214333a6bbadd8f483aa28b2a061e50d8c5a02d1f2212288\",\"artifact:4794:5dd01d7d5aac507035c91682a6efbfbbfab5824e2f7400d71b8a5b3643d4dd14\":\"5dd01d7d5aac507035c91682a6efbfbbfab5824e2f7400d71b8a5b3643d4dd14\",\"artifact:4794:7faeb191d05d7f2cb6f8bc50ebdf33d3fbadcc6d2bf465edec6fb5d8bf04312f\":\"7faeb191d05d7f2cb6f8bc50ebdf33d3fbadcc6d2bf465edec6fb5d8bf04312f\",\"artifact:4794:8e3f5db34eafea5a66fa415321d955eecbc08f47dd4b953e8baa6266e3c953ed\":\"8e3f5db34eafea5a66fa415321d955eecbc08f47dd4b953e8baa6266e3c953ed\",\"artifact:4794:9869417bc9ea4f9f1b2d564bdaaf8cd70f6dc54d6b03ada1ac72477838e42599\":\"9869417bc9ea4f9f1b2d564bdaaf8cd70f6dc54d6b03ada1ac72477838e42599\",\"artifact:4794:9e6501f1b9279d0d3ad5680a200b88cb42da917f7aeea619ec349452bb07740c\":\"9e6501f1b9279d0d3ad5680a200b88cb42da917f7aeea619ec349452bb07740c\",\"artifact:4794:ac6744db61c873c4298b3ac15926571827010764527bfc1685864a7b7695f56a\":\"ac6744db61c873c4298b3ac15926571827010764527bfc1685864a7b7695f56a\"},\"sha256\":\"0a60fbd06316eb4cdcb62b9667d369d59cf36cbc32a357b63224b5d1c12e52c9\"},\"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:4794,input_sha256:\"93736732a5185d31915c687c5321e82a3cfabd991af90729b714301266874ac2\",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/6472/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"06e2378089374211afe459eaf68e16e2390b9f4232689d73c811ebda66d6fd29","next_step_sha256":null,"research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}