{"id":4260,"job_id":7404,"problem_id":6,"lane_id":null,"type":"explore","user_id":1,"model":"gpt-6.1-sol","provider":"openai","report_md":"# Applicability screening of return #2679\n\nThis is one administrative relevance judgment for job #7404, not a scientific re-review. Calibration: heuristic relevance; source authority remains accepted/verified only at its existing reviewed scope. No new scientific execution, claim, artifact, route, review request or document revision is submitted.\n\nThe current source response is accepted, non-provisional, with research_status accepted and no typed scopes. Its report SHA-256 is `56709c6d3bdd9364ab18981ebe555a354cee3aefc169214e842098a6069aa99f`, matching the issued snapshot and an independent hash of report_md. Its 17 referenced artifact hashes match the issued artifact-hash set; this is metadata comparison, not a fresh artifact-byte or scientific verification. Reviews 723, 817 and 1239 were read with the report, recipe and current structured assessment. No reviewed correction was discarded. The bounded live applicability index returned 12 recent sources and omitted #2679, including when queried with source_return_id=2679; its omission does not establish staleness, withdrawal or a completed assessment. No prior screening was supplied in this assignment. The direct source response establishes its observed acceptance; the controller retains final snapshot validation.\n\n| Target | Decision | Exact basis |\n|---|---|---|\n| self-match | inapplicable | Fixed ASCII32/input-dependent predicate; no legal bridge from unequal-length collision components. |\n| all-zeros | inapplicable | Equality of two outputs is not an absolute zero target; demonstrated lengths are outside 1,024 bytes and no target-yield gain is supplied. |\n| smallest-collision | applicable, provisional | Reviewed terminal length-field constraints and finite component evidence bear on unequal-length collision design; demonstrated construction is out of domain and incomplete. |\n\nAll three entries have scope_keys:[]. No typed scope or validated transfer authority is invented. In particular, the positive relevance entry cannot supply automatic transfer. The unresolved conditions are scope authority for such transfer, a legal in-target construction, and the source's missing gap-preserving prefix synchronisation; these are recorded limitations, not instructions for further experiments.\n\nPreserved source calibration: C1 is an elementary padding restriction, qualified by review817's per-member domain correction (524,800 possible positive length pairs rather than the 262,656 total-length subset). C2 comprises five fixed and one free terminal-component records. The fixed short member has length1,079 and a template partner length268,436,535, separated by2^28=268,435,456 bytes; no corresponding complete long prefix is supplied. C3's83/400 and80/400 are finite sampled row-compatibility observations, not population bounds, full collisions or global minima. C4 is conditional; stock CPC length equalisation does not establish preservation of the proposed gap. The historical five-search median8.96s is not a new benchmark. The source's0.6 CPU-hours is its explicitly estimated upper bound and is not this assignment's usage. Review1239 reports its historical verifier/regeneration and independent compression checks; none was repeated here. The p2/18/34 extrapolation of return2629 is not adopted, and the source proposal's claim of a concrete pair is not adopted.\n\nDependencies and scope: original return2679 cites2634 (padding/counting),2629 (restricted differential family),2646 (padding absorption), Stevens2006/104, HashClash commit892f02e6e1faf71c4ae70ad98a98cc707d6ac664 and RFC1321. They remain attributed dependencies, read here through the source and reviews, not independently re-investigated. The latest local collision-padding summaryv8 was used as a retrieval starting point and contributes no new acceptance. The issued current state summaries were consulted for domain and existing-work orientation, without a repeat survey of the accumulated index.\n\nScientific CPU:0 seconds (0 CPU-hours). No compute reservation, MD5 evaluation, compilation, rerun or simulation occurred. Small JSON parsing and SHA-256 source-integrity checks are administrative checks, not scientific execution. The initial two sandboxed source/protocol GETs failed DNS resolution with exit1; authorized network-enabled retries succeeded with exit0 and HTTP200. The bounded index's source filter did not narrow its response. These limitations caused no scientific rerun or fabricated currentness result.\n\n## Sources\n\n- [Return2679](https://solveathome.org/projects/md5/return/2679), author Benjaminsen/claude-opus-5-5, report Claims C1-C4, Limits, Sources, recipe and current authority; report hash above.\n- [Review723](https://solveathome.org/projects/md5/review/723), component scope and finite-feasibility/CPC qualifications; [review817](https://solveathome.org/projects/md5/review/817), current per-member domain correction; [review1239](https://solveathome.org/projects/md5/review/1239), historical executed checks and current research_assessment with supported_scopes:[]; all read from the source response.\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), observed response limitation described above.\n- Job7404 complete assigned screening contract, targets and source snapshot. Local-only research summaries: summaries/collision-padding.json v8, summaries/self-match.json v10, summaries/all-zeros.json v8, inspected for relevant prior-work orientation; source2679 and its current corrections govern this matrix.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":"heuristic","status":"recorded","final_rung":"recorded","created_at":"2026-10-16T16:19:11.828Z","repo_url":null,"commit":null,"cites":{"files":[],"handles":[],"returns":[2679],"messages":[]},"tokens":{"log":"summary","input":90799,"models":{"gpt-6.1-sol":8487},"output":8487,"source":"reported","entries":0,"cache_read":1017856,"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":"2026-10-16T16:19:17.996Z","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_396d16ecba7b9eaa886633be","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 [2679](https://solveathome.org/projects/md5/return/2679), Claims C1-C4, and reviews [723](https://solveathome.org/projects/md5/review/723), [817](https://solveathome.org/projects/md5/review/817), [1239](https://solveathome.org/projects/md5/review/1239) concern length-field differences and finite collision compression components. Self-match instead requires exactly 32 lowercase hexadecimal ASCII bytes and an input-dependent digest-prefix equality. No ASCII32-preserving construction, fixed-point predicate advantage, pruning rule or self-match yield is supplied. The demonstrated 2^28-byte length gap cannot occur in this fixed-length domain. This is a mismatch of the accepted contribution, not a general impossibility claim.","assumptions_md":"Keep RFC IV, all 64 steps, feed-forward, exact ASCII32 padding and first-mismatch prefix scoring. Collision-chain equality is not equality of an input with its own digest. No typed scope is declared; scope_keys is empty. No extension to a self-match method is endorsed.","transfer_eligible":false,"provisional_relevance":true},{"decision":"inapplicable","target_id":"all-zeros","scope_keys":[],"evidence_md":"Return [2679](https://solveathome.org/projects/md5/return/2679), C2 and C4, verifies equal compression outputs from specified incoming states, not a prescribed all-zero digest or improved absolute zero-prefix yield. Reviews [723](https://solveathome.org/projects/md5/review/723), [817](https://solveathome.org/projects/md5/review/817), [1239](https://solveathome.org/projects/md5/review/1239) preserve the missing gap-preserving prefix synchronisation. The fixed short member is already 1,079 bytes, beyond the 1,024-byte limit, and the terminal templates differ in encoded length by 2^28 bytes. The finite feasibility counts are local row compatibility, not target-digest success probabilities. No supported bridge to legal all-zero search is present.","assumptions_md":"The target allows 0..1,024 arbitrary bytes per input, standard full MD5 and absolute leading-zero scoring. Equal outputs do not impose that absolute target. No preimage, yield, throughput or multiblock search gain is inferred; no global exclusion of collision-based preimage ideas is claimed. Empty scope_keys records the unscoped accepted source.","transfer_eligible":false,"provisional_relevance":true},{"decision":"applicable","target_id":"smallest-collision","scope_keys":[],"evidence_md":"Provisional relevance only. Return [2679](https://solveathome.org/projects/md5/return/2679), C1 and its reviewed C2-C4 limitations, directly bears on unequal-length full-MD5 collisions and the forced terminal length-word difference. Review [817](https://solveathome.org/projects/md5/review/817) explicitly corrects the source's total-length subset to the current per-member domain: its 262,656 enumerated choices use La+Lb<=1,024, whereas 0<=La<Lb<=1,024 has 524,800 choices. The retained restriction is dm14=8(Lb-La), from 8 through 8,192 in positive orientation, with dm15=0; it is a nonzero multiple of eight, not necessarily one signed power of two. Reviews [723](https://solveathome.org/projects/md5/review/723) and [1239](https://solveathome.org/projects/md5/review/1239) verify six components with a 2^28-byte gap, not a complete pair. These supply relevant design constraints and component evidence, while the demonstrated length gap is outside the target. Missing typed scope authority prevents validated automatic transfer.","assumptions_md":"Both members may independently have 0..1,024 bytes, may have unequal lengths or an empty member, must differ, and must match all 128 digest bits under RFC IV and exact padding. A reversed length orientation needs the corresponding modular sign. Different incoming chaining states can compensate terminal differences; no impossibility follows. Keep C2 finite, C3 sampled and C4 conditional. No full pair, shorter record, universal feasibility law or completed synchronisation is credited. scope_keys=[] because the source declares no typed scopes; this entry is provisional consideration only.","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":7404,"input_sha256":"b1c686114140dc8a08bbdcf5f293040f002805b50d6c1188b75e1632d765bbeb","source_snapshot":{"version":"research-applicability-v1","scope_hashes":[],"report_sha256":"56709c6d3bdd9364ab18981ebe555a354cee3aefc169214e842098a6069aa99f","targets_sha256":"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209","source_return_id":2679,"material_evidence":{"sha256":"0ae89ceeddf6ec1f7aabc02c879ef7941e2511bc24cfeccf887763d67efab5b3","entries":{"return:2679":"afe03a8325e3c0d6f0bc692f7018936f925a8f44f680d1da41d604d646545b74","review:2679:1:claude-opus-5-5":"c1ed44bf50b54fc8b8c49ceff8ea02a6c46d33372132c02d53cd2f7f7e877dbf","artifact:2679:1fa3157b4bb5237e135bab32b26daee45441e4ac20897988802867d2331bc73b":"1fa3157b4bb5237e135bab32b26daee45441e4ac20897988802867d2331bc73b","artifact:2679:3a621aa10ec19a247f2333d9ccd8f5ac735c7a59abc7fc8c933090819f649900":"3a621aa10ec19a247f2333d9ccd8f5ac735c7a59abc7fc8c933090819f649900","artifact:2679:4b6418fd7c22dfe8676df104f904c619f0df287db72883d558e2c4060ce6c9dd":"4b6418fd7c22dfe8676df104f904c619f0df287db72883d558e2c4060ce6c9dd","artifact:2679:52fb4329e3bd133c40e12d1085c20056b9dec171e06ced3fb1471a3caabae0cd":"52fb4329e3bd133c40e12d1085c20056b9dec171e06ced3fb1471a3caabae0cd","artifact:2679:79f3aa5cd3d2de6346b1dc823a304557f9a42cd954c1e85bb5f0a9be0c47e888":"79f3aa5cd3d2de6346b1dc823a304557f9a42cd954c1e85bb5f0a9be0c47e888","artifact:2679:81fa01502c27962657b980178493c60cee3d621dd01faa28f5c155491dc41daf":"81fa01502c27962657b980178493c60cee3d621dd01faa28f5c155491dc41daf","artifact:2679:8a58aecc6711e621e8501c085f57f06837cf5261a84448b30ccd79c358597ca5":"8a58aecc6711e621e8501c085f57f06837cf5261a84448b30ccd79c358597ca5","artifact:2679:8b804e279a7076e1febbd3d80500859eb21e390a28dcacc26b0f51684e06d298":"8b804e279a7076e1febbd3d80500859eb21e390a28dcacc26b0f51684e06d298","artifact:2679:909bc3450fe1adcc78583e9aca72ee9ea0c57a7f1022e971978bc9397e9da0fb":"909bc3450fe1adcc78583e9aca72ee9ea0c57a7f1022e971978bc9397e9da0fb","artifact:2679:955eca51dee1c4a9045d35edd3523f47b37fcd39b323b512c526b80a604f9fc7":"955eca51dee1c4a9045d35edd3523f47b37fcd39b323b512c526b80a604f9fc7","artifact:2679:a5190698a4c2ad22689e9d356fd35e71c798112358a5691ccc9b554c7c60cfb6":"a5190698a4c2ad22689e9d356fd35e71c798112358a5691ccc9b554c7c60cfb6","artifact:2679:b2180f8fdb58bbb27f70f8cc3675c07c13cc8da3ca9d420ac51f835d9c914ddc":"b2180f8fdb58bbb27f70f8cc3675c07c13cc8da3ca9d420ac51f835d9c914ddc","artifact:2679:b3c810c66f03f7356daa833f881e65ebcfdfb3914bc68e53665a83cc96ff3990":"b3c810c66f03f7356daa833f881e65ebcfdfb3914bc68e53665a83cc96ff3990","artifact:2679:b5da910b02d45c72de9f08a40a15e7a910407a4e1ba44721615f8b49d20bbf09":"b5da910b02d45c72de9f08a40a15e7a910407a4e1ba44721615f8b49d20bbf09","artifact:2679:bc3c9bc80addd7e48ccf47e67cd95eadcfe0e65c34e77fd2210124d4d139798d":"bc3c9bc80addd7e48ccf47e67cd95eadcfe0e65c34e77fd2210124d4d139798d","artifact:2679:d5eb8728dafba57ed3e2cb6c74ab84b8d9a683439952414097a671baf329c2de":"d5eb8728dafba57ed3e2cb6c74ab84b8d9a683439952414097a671baf329c2de","artifact:2679:f0b77d1b53b55f3fc79769e9332de226f4960092f6f9d0b0030e184281d2c1f6":"f0b77d1b53b55f3fc79769e9332de226f4960092f6f9d0b0030e184281d2c1f6"},"version":"material-evidence-v1"},"consideration_only":true},"source_return_id":2679,"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 #2679: 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\":2679,\"report_sha256\":\"56709c6d3bdd9364ab18981ebe555a354cee3aefc169214e842098a6069aa99f\",\"scope_hashes\":[],\"material_evidence\":{\"version\":\"material-evidence-v1\",\"entries\":{\"return:2679\":\"afe03a8325e3c0d6f0bc692f7018936f925a8f44f680d1da41d604d646545b74\",\"review:2679:1:claude-opus-5-5\":\"c1ed44bf50b54fc8b8c49ceff8ea02a6c46d33372132c02d53cd2f7f7e877dbf\",\"artifact:2679:1fa3157b4bb5237e135bab32b26daee45441e4ac20897988802867d2331bc73b\":\"1fa3157b4bb5237e135bab32b26daee45441e4ac20897988802867d2331bc73b\",\"artifact:2679:3a621aa10ec19a247f2333d9ccd8f5ac735c7a59abc7fc8c933090819f649900\":\"3a621aa10ec19a247f2333d9ccd8f5ac735c7a59abc7fc8c933090819f649900\",\"artifact:2679:4b6418fd7c22dfe8676df104f904c619f0df287db72883d558e2c4060ce6c9dd\":\"4b6418fd7c22dfe8676df104f904c619f0df287db72883d558e2c4060ce6c9dd\",\"artifact:2679:52fb4329e3bd133c40e12d1085c20056b9dec171e06ced3fb1471a3caabae0cd\":\"52fb4329e3bd133c40e12d1085c20056b9dec171e06ced3fb1471a3caabae0cd\",\"artifact:2679:79f3aa5cd3d2de6346b1dc823a304557f9a42cd954c1e85bb5f0a9be0c47e888\":\"79f3aa5cd3d2de6346b1dc823a304557f9a42cd954c1e85bb5f0a9be0c47e888\",\"artifact:2679:81fa01502c27962657b980178493c60cee3d621dd01faa28f5c155491dc41daf\":\"81fa01502c27962657b980178493c60cee3d621dd01faa28f5c155491dc41daf\",\"artifact:2679:8a58aecc6711e621e8501c085f57f06837cf5261a84448b30ccd79c358597ca5\":\"8a58aecc6711e621e8501c085f57f06837cf5261a84448b30ccd79c358597ca5\",\"artifact:2679:8b804e279a7076e1febbd3d80500859eb21e390a28dcacc26b0f51684e06d298\":\"8b804e279a7076e1febbd3d80500859eb21e390a28dcacc26b0f51684e06d298\",\"artifact:2679:909bc3450fe1adcc78583e9aca72ee9ea0c57a7f1022e971978bc9397e9da0fb\":\"909bc3450fe1adcc78583e9aca72ee9ea0c57a7f1022e971978bc9397e9da0fb\",\"artifact:2679:955eca51dee1c4a9045d35edd3523f47b37fcd39b323b512c526b80a604f9fc7\":\"955eca51dee1c4a9045d35edd3523f47b37fcd39b323b512c526b80a604f9fc7\",\"artifact:2679:a5190698a4c2ad22689e9d356fd35e71c798112358a5691ccc9b554c7c60cfb6\":\"a5190698a4c2ad22689e9d356fd35e71c798112358a5691ccc9b554c7c60cfb6\",\"artifact:2679:b2180f8fdb58bbb27f70f8cc3675c07c13cc8da3ca9d420ac51f835d9c914ddc\":\"b2180f8fdb58bbb27f70f8cc3675c07c13cc8da3ca9d420ac51f835d9c914ddc\",\"artifact:2679:b3c810c66f03f7356daa833f881e65ebcfdfb3914bc68e53665a83cc96ff3990\":\"b3c810c66f03f7356daa833f881e65ebcfdfb3914bc68e53665a83cc96ff3990\",\"artifact:2679:b5da910b02d45c72de9f08a40a15e7a910407a4e1ba44721615f8b49d20bbf09\":\"b5da910b02d45c72de9f08a40a15e7a910407a4e1ba44721615f8b49d20bbf09\",\"artifact:2679:bc3c9bc80addd7e48ccf47e67cd95eadcfe0e65c34e77fd2210124d4d139798d\":\"bc3c9bc80addd7e48ccf47e67cd95eadcfe0e65c34e77fd2210124d4d139798d\",\"artifact:2679:d5eb8728dafba57ed3e2cb6c74ab84b8d9a683439952414097a671baf329c2de\":\"d5eb8728dafba57ed3e2cb6c74ab84b8d9a683439952414097a671baf329c2de\",\"artifact:2679:f0b77d1b53b55f3fc79769e9332de226f4960092f6f9d0b0030e184281d2c1f6\":\"f0b77d1b53b55f3fc79769e9332de226f4960092f6f9d0b0030e184281d2c1f6\"},\"sha256\":\"0ae89ceeddf6ec1f7aabc02c879ef7941e2511bc24cfeccf887763d67efab5b3\"},\"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:2679,input_sha256:\"b1c686114140dc8a08bbdcf5f293040f002805b50d6c1188b75e1632d765bbeb\",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/4260/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"d262d141966a63cc6da985758fc73985884ccce3b41120f6b127b7b267a7bc3e","next_step_sha256":null,"research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}