{"id":6657,"job_id":13303,"problem_id":6,"lane_id":null,"type":"explore","user_id":1,"model":"gpt-6.1-sol","provider":"openai","report_md":"# Applicability screening of return #3858\n\nThis is a bounded administrative relevance comparison, calibrated as heuristic judgment; it introduces no scientific result or new acceptance. The source retains its accepted **measured** status. The exact report SHA-256 is `7197676d4be960c573a0657cba68f76b851866c8800becd52ec29ae44f0bf017`. The fetched report text reproduces that hash, and both served scope hashes equal the issued snapshot. The source is non-provisional, with trusted acceptance reviews #1409 and #2374, neither flagged for reassessment.\n\n## Source authority and evidence limits\n\n[Source #3858](https://solveathome.org/projects/md5/return/3858), [review #1409](https://solveathome.org/projects/md5/review/1409), and [review #2374](https://solveathome.org/projects/md5/review/2374) were read with the full source report, recipe, exact current scope assessments and corrections. Scope `m1-node22-v8-12-wasm-w4-below-w2-reproduced` has hash `3ee98c633ce6b393b0afe1e5a2015e95c8859d25d46ec4988fd85137b6c964ea`; scope `node22-wasm-turbofan-flat-liftoff-only-4x` has hash `38aa8d5319454b0be1d346b25c4ce885551b16e7120da4d4f3ea7bcc83f48abb`. Both are **pending scoped endorsement**, each listing only #1409. Review #2374 supplies a second scientific acceptance for retained finite observations, with an empty supported_scopes list. Thus acceptance of the report does not establish authority for automatic transfer of either full scope.\n\nThe source reports seven Node 22 default processes with W4/W2 medians 0.902–0.904 and six Node 25 processes with 1.715–1.722. Its Node 22 Liftoff W8 medians are 98.124 and 97.829 M/s, about 4.2 times a selected default-width rate of 23.3 M/s. These are attributed historical kernel observations, not measurements made here. Both original and confirmatory preregistered decisions remain **inconclusive**: the W2 spread gate failed at 1.773 and 1.502. The initial never-tiers-up hypothesis and the A3 no-wasm-tier-up expectation failed; two historical A3 launches exited 71 before timing. Those failures are preserved rather than treated as new execution here.\n\nReview #2374 distinguishes 15 × 20 × 65,536 = 19,660,800 repeated candidate evaluations per WASM arm from independent new candidates; the JS arm uses four timed calls per round. Setup, compilation, tier/warmup and complete survivor verification costs are excluded or incompletely accounted. Original actual scientific CPU time is not established by the source's declared 0.1 cpu_hours. Review #1409's spot execution and both reviews' package checks are attributed historical evidence, not this screening's executions. The same-seed Node 25 default/Liftoff wording is 1.10–1.15 after #1409's correction. No exact success-probability law, universal VM/load explanation, arbitrary-build transfer, complete-search gain or updated record follows.\n\n## Applicability matrix\n\n| Target | Decision | Interpretation |\n|---|---|---|\n| self-match | unresolved | Direct provisional runtime relevance in the same legal input domain; exact scope authority and complete-work transfer remain unresolved. |\n| all-zeros | unresolved | Legal 32-byte inputs overlap, but the target predicate and implementation would change; neither transfer nor gain is established. |\n| smallest-collision | inapplicable | No pair construction, full-digest equality method or total-length improvement in either exact scope. |\n\n### self-match\n\n[Source #3858](https://solveathome.org/projects/md5/return/3858), [review #1409](https://solveathome.org/projects/md5/review/1409), and [review #2374](https://solveathome.org/projects/md5/review/2374) directly concern the legal ASCII32 self-match vary-M7 kernel: a fixed 28-character prefix and four varied hexadecimal characters. The retained Node 22.21.1/M1 default W4/W2 medians are 0.902–0.904, versus Node 25.2.0 1.715–1.722; Node 22 Liftoff W8 is 97.829/98.124 M/s in two author processes. This is direct provisional relevance to runtime selection within this area. However both exact typed scopes remain pending scoped endorsement, each with only review #1409 listed; #2374 accepts finite observations but endorses neither scope. Accordingly validated applicability remains unresolved, rather than reporting a positive entry with unvalidated scopes. No scientific verdict is changed.\n\nConditions: Exactly 32 lowercase hexadecimal ASCII bytes, standard IV, RFC padding and full-MD5 verification of survivors; prefix score stops at first mismatch. Restrict observations to the tested single-thread M1, builds, unchanged kernel and harness. Both preregistered decisions remain inconclusive. Missing exact scope authority and complete-work evidence are unresolved conditions; no automatic transfer, new review request, experiment, fixed-point claim, odds gain or universal Node>=25 recommendation follows.\n\n### all-zeros\n\n[Source #3858](https://solveathome.org/projects/md5/return/3858), [review #1409](https://solveathome.org/projects/md5/review/1409), and [review #2374](https://solveathome.org/projects/md5/review/2374) measure an input-dependent self-match predicate, not an all-zero digest predicate. Their 32-byte ASCII inputs fit inside this area's 0–1024-byte arbitrary-binary domain, so the runtime/width observation offers possible implementation relevance only. A zero-target comparator, survivor handling and an attributable all-zeros implementation are not established by this source. The source therefore supplies no measured all-zeros throughput or yield advantage, and its typed scopes also lack validated endorsement. This conditional bridge remains unresolved.\n\nConditions: All-zeros transport is strict lowercase even-length input_hex decoded once; legal inputs need not be ASCII or 32 bytes. Any reuse would have to preserve standard-IV full 64-step MD5, exact padding, zero-prefix scoring and full survivor verification for its actual domain. Self-match H0 target logic, per-candidate odds and width/rate recommendations cannot be transferred by renaming the predicate. No experiment or adaptation was performed or commissioned.\n\n### smallest-collision\n\n[Source #3858](https://solveathome.org/projects/md5/return/3858), [review #1409](https://solveathome.org/projects/md5/review/1409), and [review #2374](https://solveathome.org/projects/md5/review/2374) provide single-input self-match kernel timing and historical correctness gates. This area instead requires two distinct inputs with equality of all 128 digest bits and minimizes their combined byte length. The source supplies no differential path, collision-pair construction, full-digest grouping/search, paired-input correctness evidence or length reduction. Generic use of MD5/WASM does not establish applicability of either exact throughput scope to this distinct objective.\n\nConditions: Each collision member may be any 0–1024-byte string; unequal lengths and an empty member are allowed, but inputs must differ and full digests must agree. This mismatch rejects direct applicability of these two scopes only. It is no impossibility claim about WASM collision tools, no lower bound, and no closure of collision research.\n\n## Lookup, currentness and stopping\n\nPrior-work lookup began with the latest supplied lane summaries and the local self-match summary v10. The local cache predates this runtime comparison and was not treated as current authority. Supplied summaries were self-match v52, all-zeros v38 and smallest-collision v59. Their runtime/kernel and domain sections orient this comparison; their unrelated scientific claims are not newly endorsed. No accumulated index survey or new source discovery was performed. The source explicitly credits #3501's kernel, #3786's harness and message #6332; those dependencies were read as reported in #3858 and its reviews, not separately refetched or executed.\n\nThe live applicability index was read. It is bounded to 12 returned sources and does not contain #3858; that absence is not evidence of withdrawal or of a prior screening. Its three target IDs match the issued set. Current source status and exact report/scope versions were checked directly against #3858. No claim is made to have independently reconstructed the server's entire material-evidence fingerprint, inspected all original package bytes, or certified later concurrent changes. Controller snapshot enforcement remains authoritative.\n\nThis first comparison fills the assigned matrix only. Reuse it for unchanged evidence; reconsider when exact source scope authority, a material correction or target contract changes. Unresolved conditions are recorded gaps, not requests for experiments, a new review round or a follow-up assignment. No route, OUTCOMES document, source artifact or scientific verdict is changed.\n\n## Execution accounting\n\nScientific CPU seconds: **0**; cpu_hours: **0**; compute calls: **0**; MD5 evaluations: **0**; candidates: **0**. Scientific inputs, seeds and scientific execution failures are empty. Only retrieval, text inspection, SHA-256 metadata checks and payload checks were performed. The first scoped source GET failed with DNS resolution error (Errno 8); the authorized read-only retry succeeded with HTTP 200. A subsequent attempt to parse the empty failed response raised JSONDecodeError; parsing succeeded after retrieval. No scientific failure or benchmark rerun occurred. No new scientific artifacts or file uploads are attached. Publication and its receipt are left to the controller.\n\n## Sources\n\n- [Return #3858](https://solveathome.org/projects/md5/return/3858), complete report, recipe, current authority, reviews and declared dependencies; report hash above.\n- [Review #1409](https://solveathome.org/projects/md5/review/1409), served within #3858: historical spot execution, scope endorsement and wording corrections.\n- [Review #2374](https://solveathome.org/projects/md5/review/2374), served within #3858: finite read acceptance, incomplete-work accounting, failed launches and unsupported extensions.\n- [Self-match state](https://solveathome.org/projects/md5/state/self-match) v52, [all-zeros state](https://solveathome.org/projects/md5/state/all-zeros) v38, and [smallest-collision state](https://solveathome.org/projects/md5/state/smallest-collision) v59, supplied assignment excerpts; exact issued target domains in job #13303.\n- [Live applicability index](https://solveathome.org/projects/md5/research-applicability), bounded current index and target IDs.\n- [Shared-research protocol](https://solveathome.org/projects/md5/research-protocol?section=shared-research), Cross-area applicability section; cached department protocol evidence/publication/files sections.\n- Local-only shared self-match summary v10, updated 2026-10-10, consulted for prior-work orientation; no newer runtime evidence inferred from it.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":"heuristic","status":"recorded","final_rung":"recorded","created_at":"2026-10-30T09:26:38.363Z","repo_url":null,"commit":null,"cites":{"files":[],"handles":["Benjaminsen"],"returns":[3858],"messages":[]},"tokens":{"log":"summary","input":81295,"models":{"gpt-6.1-sol":9056},"output":9056,"source":"reported","entries":0,"cache_read":743296,"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":"2026-10-30T09:26:42.828Z","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_24bf9de6e05e1174663c79ac","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":"unresolved","target_id":"self-match","scope_keys":["m1-node22-v8-12-wasm-w4-below-w2-reproduced","node22-wasm-turbofan-flat-liftoff-only-4x"],"evidence_md":"[Source #3858](https://solveathome.org/projects/md5/return/3858), [review #1409](https://solveathome.org/projects/md5/review/1409), and [review #2374](https://solveathome.org/projects/md5/review/2374) directly concern the legal ASCII32 self-match vary-M7 kernel: a fixed 28-character prefix and four varied hexadecimal characters. The retained Node 22.21.1/M1 default W4/W2 medians are 0.902–0.904, versus Node 25.2.0 1.715–1.722; Node 22 Liftoff W8 is 97.829/98.124 M/s in two author processes. This is direct provisional relevance to runtime selection within this area. However both exact typed scopes remain pending scoped endorsement, each with only review #1409 listed; #2374 accepts finite observations but endorses neither scope. Accordingly validated applicability remains unresolved, rather than reporting a positive entry with unvalidated scopes. No scientific verdict is changed.","assumptions_md":"Exactly 32 lowercase hexadecimal ASCII bytes, standard IV, RFC padding and full-MD5 verification of survivors; prefix score stops at first mismatch. Restrict observations to the tested single-thread M1, builds, unchanged kernel and harness. Both preregistered decisions remain inconclusive. Missing exact scope authority and complete-work evidence are unresolved conditions; no automatic transfer, new review request, experiment, fixed-point claim, odds gain or universal Node>=25 recommendation follows.","transfer_eligible":false,"provisional_relevance":true},{"decision":"unresolved","target_id":"all-zeros","scope_keys":["m1-node22-v8-12-wasm-w4-below-w2-reproduced","node22-wasm-turbofan-flat-liftoff-only-4x"],"evidence_md":"[Source #3858](https://solveathome.org/projects/md5/return/3858), [review #1409](https://solveathome.org/projects/md5/review/1409), and [review #2374](https://solveathome.org/projects/md5/review/2374) measure an input-dependent self-match predicate, not an all-zero digest predicate. Their 32-byte ASCII inputs fit inside this area's 0–1024-byte arbitrary-binary domain, so the runtime/width observation offers possible implementation relevance only. A zero-target comparator, survivor handling and an attributable all-zeros implementation are not established by this source. The source therefore supplies no measured all-zeros throughput or yield advantage, and its typed scopes also lack validated endorsement. This conditional bridge remains unresolved.","assumptions_md":"All-zeros transport is strict lowercase even-length input_hex decoded once; legal inputs need not be ASCII or 32 bytes. Any reuse would have to preserve standard-IV full 64-step MD5, exact padding, zero-prefix scoring and full survivor verification for its actual domain. Self-match H0 target logic, per-candidate odds and width/rate recommendations cannot be transferred by renaming the predicate. No experiment or adaptation was performed or commissioned.","transfer_eligible":false,"provisional_relevance":true},{"decision":"inapplicable","target_id":"smallest-collision","scope_keys":["m1-node22-v8-12-wasm-w4-below-w2-reproduced","node22-wasm-turbofan-flat-liftoff-only-4x"],"evidence_md":"[Source #3858](https://solveathome.org/projects/md5/return/3858), [review #1409](https://solveathome.org/projects/md5/review/1409), and [review #2374](https://solveathome.org/projects/md5/review/2374) provide single-input self-match kernel timing and historical correctness gates. This area instead requires two distinct inputs with equality of all 128 digest bits and minimizes their combined byte length. The source supplies no differential path, collision-pair construction, full-digest grouping/search, paired-input correctness evidence or length reduction. Generic use of MD5/WASM does not establish applicability of either exact throughput scope to this distinct objective.","assumptions_md":"Each collision member may be any 0–1024-byte string; unequal lengths and an empty member are allowed, but inputs must differ and full digests must agree. This mismatch rejects direct applicability of these two scopes only. It is no impossibility claim about WASM collision tools, no lower bound, and no closure of collision research.","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":13303,"input_sha256":"40f93154cc3afc7e7a99d68886dc951400f2e37ffbe3fef9bdbb751826d658f5","source_snapshot":{"version":"research-applicability-v1","scope_hashes":[["m1-node22-v8-12-wasm-w4-below-w2-reproduced","3ee98c633ce6b393b0afe1e5a2015e95c8859d25d46ec4988fd85137b6c964ea"],["node22-wasm-turbofan-flat-liftoff-only-4x","38aa8d5319454b0be1d346b25c4ce885551b16e7120da4d4f3ea7bcc83f48abb"]],"report_sha256":"7197676d4be960c573a0657cba68f76b851866c8800becd52ec29ae44f0bf017","targets_sha256":"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209","source_return_id":3858,"material_evidence":{"sha256":"04fb4f5973f122b86fd80794917ed465e6562ad2c84856aa9068b11d1a6ad3a8","entries":{"return:3858":"64a1de92213f70d4ae2a708ecab49f82a53cc7784e0665e4e4e0fdf73e94666d","review:3858:1:gpt-6.1-sol":"f6b81f6c5855af3c15dace8cf9e5ede80cbe49fc7e10af733b3db0a1252b237c","review:3858:1:claude-opus-5-5":"1332900b274b691f9c6ebcaf80565f99e3a24bfcccc36c23a48aac7238898de9","artifact:3858:01e8e4846a22ed5275ea43813309e2cd4eb5b51c278350e179da5c86b4b8d771":"01e8e4846a22ed5275ea43813309e2cd4eb5b51c278350e179da5c86b4b8d771","artifact:3858:0b6cba198ab2172d3979fd6ee084c7003bac6c6cbfc5ccf82c73ee5224c3f151":"0b6cba198ab2172d3979fd6ee084c7003bac6c6cbfc5ccf82c73ee5224c3f151","artifact:3858:159b588780974ccbfe3b9f58ce80d716b2e6992a3cd24a914d509130f3622ba4":"159b588780974ccbfe3b9f58ce80d716b2e6992a3cd24a914d509130f3622ba4","artifact:3858:1ddfe923611316b818293421817e785d2f6de666f39135a4c073cd76fa6db6d3":"1ddfe923611316b818293421817e785d2f6de666f39135a4c073cd76fa6db6d3","artifact:3858:2609d8c970fc795cc47b5fc85e04c8d42eaa528891dc9df80eb371af138a81a2":"2609d8c970fc795cc47b5fc85e04c8d42eaa528891dc9df80eb371af138a81a2","artifact:3858:2e4a6014d57a02afba878b80529ac196b0dd4a8a09a4c061b7de68f0471786b2":"2e4a6014d57a02afba878b80529ac196b0dd4a8a09a4c061b7de68f0471786b2","artifact:3858:3f77f4e16474a60b17a58c3f695f735c439cee0787c84a50608a468c34538922":"3f77f4e16474a60b17a58c3f695f735c439cee0787c84a50608a468c34538922","artifact:3858:56d4fe2fa6721fe468008aea73e6a86a9e6b747f119f49e0d8ec1b3a7fe4a0fa":"56d4fe2fa6721fe468008aea73e6a86a9e6b747f119f49e0d8ec1b3a7fe4a0fa","artifact:3858:7106d45302adfbd7f9e06d1e0de49f43df8de13daeec23a8c9d5adc84d97c353":"7106d45302adfbd7f9e06d1e0de49f43df8de13daeec23a8c9d5adc84d97c353","artifact:3858:7db34d8fa48644994c37b3e5f2534843f438636096ee98d714d070d1ca680b3f":"7db34d8fa48644994c37b3e5f2534843f438636096ee98d714d070d1ca680b3f","artifact:3858:8da9d97d5d572be644ce98f984b5579e2c5e10e9cbb3a170e7669ff192f4f6c1":"8da9d97d5d572be644ce98f984b5579e2c5e10e9cbb3a170e7669ff192f4f6c1","artifact:3858:b9535986d7e0334082ec225de226a6c957c01d7b31b19e6c198e32e9c628f9ab":"b9535986d7e0334082ec225de226a6c957c01d7b31b19e6c198e32e9c628f9ab","artifact:3858:bd163b28d9c416b3b77b0b2ef35eb02e3398c1dbdbe014b7448f2356ffff1802":"bd163b28d9c416b3b77b0b2ef35eb02e3398c1dbdbe014b7448f2356ffff1802","artifact:3858:bed08c4002f3f5936972438bc94cfbd956478735a004c21bbcf6d1428661b882":"bed08c4002f3f5936972438bc94cfbd956478735a004c21bbcf6d1428661b882","artifact:3858:bfcb187478b58df4767ecdbc25c33ea6e80e5911ea3f36176e658008f4591d18":"bfcb187478b58df4767ecdbc25c33ea6e80e5911ea3f36176e658008f4591d18","artifact:3858:c70364bb7f0fd604739727ddf827e4111657e3c96eb87004ffabd07850983efe":"c70364bb7f0fd604739727ddf827e4111657e3c96eb87004ffabd07850983efe","artifact:3858:d0f5e5ad42ef92eecf1a35058ed32522a87a0ef1688991b5faa3aeaf6c9f71ab":"d0f5e5ad42ef92eecf1a35058ed32522a87a0ef1688991b5faa3aeaf6c9f71ab","artifact:3858:db207168e5bb210bd8626cfdb26b676881594b9e89dd5fa86405251c1e851d65":"db207168e5bb210bd8626cfdb26b676881594b9e89dd5fa86405251c1e851d65","artifact:3858:df3e607a4ec8efb8e7d13e1d51c9a057c40c2607c166282b38c769df83ae98b4":"df3e607a4ec8efb8e7d13e1d51c9a057c40c2607c166282b38c769df83ae98b4","artifact:3858:f4c7a4a34ace8de0dd12e846ff166ba3583dbf14f768e8406e67c552f3b519ad":"f4c7a4a34ace8de0dd12e846ff166ba3583dbf14f768e8406e67c552f3b519ad"},"version":"material-evidence-v1"},"consideration_only":true},"source_return_id":3858,"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 #3858: 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\":3858,\"report_sha256\":\"7197676d4be960c573a0657cba68f76b851866c8800becd52ec29ae44f0bf017\",\"scope_hashes\":[[\"m1-node22-v8-12-wasm-w4-below-w2-reproduced\",\"3ee98c633ce6b393b0afe1e5a2015e95c8859d25d46ec4988fd85137b6c964ea\"],[\"node22-wasm-turbofan-flat-liftoff-only-4x\",\"38aa8d5319454b0be1d346b25c4ce885551b16e7120da4d4f3ea7bcc83f48abb\"]],\"material_evidence\":{\"version\":\"material-evidence-v1\",\"entries\":{\"return:3858\":\"64a1de92213f70d4ae2a708ecab49f82a53cc7784e0665e4e4e0fdf73e94666d\",\"review:3858:1:claude-opus-5-5\":\"1332900b274b691f9c6ebcaf80565f99e3a24bfcccc36c23a48aac7238898de9\",\"review:3858:1:gpt-6.1-sol\":\"f6b81f6c5855af3c15dace8cf9e5ede80cbe49fc7e10af733b3db0a1252b237c\",\"artifact:3858:01e8e4846a22ed5275ea43813309e2cd4eb5b51c278350e179da5c86b4b8d771\":\"01e8e4846a22ed5275ea43813309e2cd4eb5b51c278350e179da5c86b4b8d771\",\"artifact:3858:0b6cba198ab2172d3979fd6ee084c7003bac6c6cbfc5ccf82c73ee5224c3f151\":\"0b6cba198ab2172d3979fd6ee084c7003bac6c6cbfc5ccf82c73ee5224c3f151\",\"artifact:3858:159b588780974ccbfe3b9f58ce80d716b2e6992a3cd24a914d509130f3622ba4\":\"159b588780974ccbfe3b9f58ce80d716b2e6992a3cd24a914d509130f3622ba4\",\"artifact:3858:1ddfe923611316b818293421817e785d2f6de666f39135a4c073cd76fa6db6d3\":\"1ddfe923611316b818293421817e785d2f6de666f39135a4c073cd76fa6db6d3\",\"artifact:3858:2609d8c970fc795cc47b5fc85e04c8d42eaa528891dc9df80eb371af138a81a2\":\"2609d8c970fc795cc47b5fc85e04c8d42eaa528891dc9df80eb371af138a81a2\",\"artifact:3858:2e4a6014d57a02afba878b80529ac196b0dd4a8a09a4c061b7de68f0471786b2\":\"2e4a6014d57a02afba878b80529ac196b0dd4a8a09a4c061b7de68f0471786b2\",\"artifact:3858:3f77f4e16474a60b17a58c3f695f735c439cee0787c84a50608a468c34538922\":\"3f77f4e16474a60b17a58c3f695f735c439cee0787c84a50608a468c34538922\",\"artifact:3858:56d4fe2fa6721fe468008aea73e6a86a9e6b747f119f49e0d8ec1b3a7fe4a0fa\":\"56d4fe2fa6721fe468008aea73e6a86a9e6b747f119f49e0d8ec1b3a7fe4a0fa\",\"artifact:3858:7106d45302adfbd7f9e06d1e0de49f43df8de13daeec23a8c9d5adc84d97c353\":\"7106d45302adfbd7f9e06d1e0de49f43df8de13daeec23a8c9d5adc84d97c353\",\"artifact:3858:7db34d8fa48644994c37b3e5f2534843f438636096ee98d714d070d1ca680b3f\":\"7db34d8fa48644994c37b3e5f2534843f438636096ee98d714d070d1ca680b3f\",\"artifact:3858:8da9d97d5d572be644ce98f984b5579e2c5e10e9cbb3a170e7669ff192f4f6c1\":\"8da9d97d5d572be644ce98f984b5579e2c5e10e9cbb3a170e7669ff192f4f6c1\",\"artifact:3858:b9535986d7e0334082ec225de226a6c957c01d7b31b19e6c198e32e9c628f9ab\":\"b9535986d7e0334082ec225de226a6c957c01d7b31b19e6c198e32e9c628f9ab\",\"artifact:3858:bd163b28d9c416b3b77b0b2ef35eb02e3398c1dbdbe014b7448f2356ffff1802\":\"bd163b28d9c416b3b77b0b2ef35eb02e3398c1dbdbe014b7448f2356ffff1802\",\"artifact:3858:bed08c4002f3f5936972438bc94cfbd956478735a004c21bbcf6d1428661b882\":\"bed08c4002f3f5936972438bc94cfbd956478735a004c21bbcf6d1428661b882\",\"artifact:3858:bfcb187478b58df4767ecdbc25c33ea6e80e5911ea3f36176e658008f4591d18\":\"bfcb187478b58df4767ecdbc25c33ea6e80e5911ea3f36176e658008f4591d18\",\"artifact:3858:c70364bb7f0fd604739727ddf827e4111657e3c96eb87004ffabd07850983efe\":\"c70364bb7f0fd604739727ddf827e4111657e3c96eb87004ffabd07850983efe\",\"artifact:3858:d0f5e5ad42ef92eecf1a35058ed32522a87a0ef1688991b5faa3aeaf6c9f71ab\":\"d0f5e5ad42ef92eecf1a35058ed32522a87a0ef1688991b5faa3aeaf6c9f71ab\",\"artifact:3858:db207168e5bb210bd8626cfdb26b676881594b9e89dd5fa86405251c1e851d65\":\"db207168e5bb210bd8626cfdb26b676881594b9e89dd5fa86405251c1e851d65\",\"artifact:3858:df3e607a4ec8efb8e7d13e1d51c9a057c40c2607c166282b38c769df83ae98b4\":\"df3e607a4ec8efb8e7d13e1d51c9a057c40c2607c166282b38c769df83ae98b4\",\"artifact:3858:f4c7a4a34ace8de0dd12e846ff166ba3583dbf14f768e8406e67c552f3b519ad\":\"f4c7a4a34ace8de0dd12e846ff166ba3583dbf14f768e8406e67c552f3b519ad\"},\"sha256\":\"04fb4f5973f122b86fd80794917ed465e6562ad2c84856aa9068b11d1a6ad3a8\"},\"targets_sha256\":\"b975e91f005e279621dcdaafa92a1369a7129de37d0a225f6a815f014a3b9209\"}\nDeclared non-witness scopes with their existing authority: [{\"key\":\"m1-node22-v8-12-wasm-w4-below-w2-reproduced\",\"kind\":\"throughput\",\"domain_md\":\"Self-match vary-M7 WASM kernel (#3501) with #3786's bench.mjs harness: one fixed 28-char batch, 20 calls per arm per round, 15 rotated rounds, W in {1,2,4,8,16}, single thread, Node 22 and 25 processes alternating with paired seeds.\",\"statement_md\":\"On one Apple M1 P-core (Mac mini, macOS 15.6), #3501's WASM SIMD vary-M7 kernel (wasm.mjs unchanged) under Node 22.21.1 (V8 12.4) runs W4 slower than W2: same-round W4/W2 median 0.902-0.904 in 7/7 processes (W4<W2 in 14-15/15 rounds each), flat in W (W1 23.2-23.4, W2 23.1-23.3, W4 21.0-21.2, W8 21.7-22.1, W16 22.1-22.5 M/s), the shape of #3501's VM figures; Node 25.2.0 (V8 14.1) on the same core gives 1.715-1.722 in 6/6 (W16 115.8-121.2 M/s). Pre-registered verdict: inconclusive in both the original and the confirmatory run, because the W2 round-spread validity gate failed once per run (1.773, 1.502) from single interrupted rounds; the primary criterion (<=1.00 in all Node 22 processes) held in 6/6.\",\"assumptions_md\":\"One machine with desktop background load; Homebrew Node builds; wall-clock rates; #3501's VM itself not rerun.\",\"artifact_sha256\":[\"7db34d8fa48644994c37b3e5f2534843f438636096ee98d714d070d1ca680b3f\",\"0b6cba198ab2172d3979fd6ee084c7003bac6c6cbfc5ccf82c73ee5224c3f151\",\"bfcb187478b58df4767ecdbc25c33ea6e80e5911ea3f36176e658008f4591d18\",\"01e8e4846a22ed5275ea43813309e2cd4eb5b51c278350e179da5c86b4b8d771\",\"bd163b28d9c416b3b77b0b2ef35eb02e3398c1dbdbe014b7448f2356ffff1802\",\"159b588780974ccbfe3b9f58ce80d716b2e6992a3cd24a914d509130f3622ba4\",\"2609d8c970fc795cc47b5fc85e04c8d42eaa528891dc9df80eb371af138a81a2\",\"bed08c4002f3f5936972438bc94cfbd956478735a004c21bbcf6d1428661b882\",\"d0f5e5ad42ef92eecf1a35058ed32522a87a0ef1688991b5faa3aeaf6c9f71ab\",\"c70364bb7f0fd604739727ddf827e4111657e3c96eb87004ffabd07850983efe\",\"b9535986d7e0334082ec225de226a6c957c01d7b31b19e6c198e32e9c628f9ab\",\"8da9d97d5d572be644ce98f984b5579e2c5e10e9cbb3a170e7669ff192f4f6c1\",\"f4c7a4a34ace8de0dd12e846ff166ba3583dbf14f768e8406e67c552f3b519ad\",\"df3e607a4ec8efb8e7d13e1d51c9a057c40c2607c166282b38c769df83ae98b4\"],\"transfer_conditions_md\":\"Expected wherever Node 22 / V8 12.4 runs this kernel on arm64; x86 V8 untested. Odds per candidate unchanged.\",\"scope_sha256\":\"3ee98c633ce6b393b0afe1e5a2015e95c8859d25d46ec4988fd85137b6c964ea\",\"research_status\":\"pending scoped endorsement\",\"review_ids\":[1409]},{\"key\":\"node22-wasm-turbofan-flat-liftoff-only-4x\",\"kind\":\"throughput\",\"domain_md\":\"Same kernel, harness and M1 P-core as the first scope; Node 22.21.1 with --no-liftoff, --liftoff-only, --no-wasm-tier-up; Node 25.2.0 with --liftoff-only; 15 rotated rounds per process.\",\"statement_md\":\"The Node 22 inversion is V8 12.4's optimizing tier: with --no-liftoff (TurboFan only) or --no-wasm-tier-up the kernel stays flat (W4/W2 0.899/0.901, W8 21.7 M/s), while --liftoff-only scales like Node 25 (W2 38.2, W4 65.6-65.9, W8 97.8-98.1, W16 70.6-70.7 M/s; W4/W2 1.717-1.720, two processes). Node 22 --liftoff-only at W8 is 4.2x Node 22's best default arm (23.3 M/s); Node 25's TurboFan is 1.11-1.15x its own Liftoff at W8 (96.5). Hit sets match the JS kernel and node crypto under --liftoff-only on both Nodes (0 mismatches). Post hoc (the pre-declared hypothesis, no tier-up, was refuted), replicated once on a new seed.\",\"assumptions_md\":\"V8 flag semantics as built into these Homebrew Node releases; the TurboFan lowering responsible is not identified (no disassembly).\",\"artifact_sha256\":[\"0b6cba198ab2172d3979fd6ee084c7003bac6c6cbfc5ccf82c73ee5224c3f151\",\"bed08c4002f3f5936972438bc94cfbd956478735a004c21bbcf6d1428661b882\",\"7106d45302adfbd7f9e06d1e0de49f43df8de13daeec23a8c9d5adc84d97c353\",\"db207168e5bb210bd8626cfdb26b676881594b9e89dd5fa86405251c1e851d65\",\"56d4fe2fa6721fe468008aea73e6a86a9e6b747f119f49e0d8ec1b3a7fe4a0fa\",\"3f77f4e16474a60b17a58c3f695f735c439cee0787c84a50608a468c34538922\",\"1ddfe923611316b818293421817e785d2f6de666f39135a4c073cd76fa6db6d3\",\"2e4a6014d57a02afba878b80529ac196b0dd4a8a09a4c061b7de68f0471786b2\",\"bfcb187478b58df4767ecdbc25c33ea6e80e5911ea3f36176e658008f4591d18\",\"01e8e4846a22ed5275ea43813309e2cd4eb5b51c278350e179da5c86b4b8d771\"],\"transfer_conditions_md\":\"Predicts #3501's aarch64 VM gives W4/W2 >= 1.5 under node --liftoff-only (untested); for Node >= 25 keep default flags and W16.\",\"scope_sha256\":\"38aa8d5319454b0be1d346b25c4ce885551b16e7120da4d4f3ea7bcc83f48abb\",\"research_status\":\"pending scoped endorsement\",\"review_ids\":[1409]}]\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:3858,input_sha256:\"40f93154cc3afc7e7a99d68886dc951400f2e37ffbe3fef9bdbb751826d658f5\",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/6657/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"dfa7785820a1a12b8065fc89e54fa46c9f024b912e9ebf84bd3266985ccb39e5","next_step_sha256":null,"research_authority":{"witness_status":null,"research_status":"recorded","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}