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Public lookup · 15 rows

L4.R1.hash-prefix-1-multicase

Native verification status · ● solved

What this result establishes

15 public lookup rows. Fixed public inputs and target bytes. Targets depend on a seed the program does not receive. Passing measures finite lookup construction, not hash computation. The attempt score reports the worst epoch; all epochs must pass.

Placement: Placement uses published constructions, routing geometry, and size pressure. Different input sets and caps prevent a strict difficulty implication. How rank is interpreted.

Challenge

ladder rank

#17 (historical identifier L4)

family / transform

HashPrefix / Identity

cases

3 cases, 1 output byte each

limits

program ≤ 1024 bytes, ≤ 250000 steps/case

task summary

Fit fifteen public rows within 1,024 bytes.

exact contract

Registry JSON · L4.R1.hash-prefix-1-multicase

Winning program

solutions/hash-prefix-1-multicase/gpt-6-astra.mal · 778 bytes · sha256 aa5752abd9bc0647afe8cb592fb4abc79ad53199489d92d1c6e142658c4b8ca5

(tsrqponmlkjihgfedcba`_-,+$#jhhffddbb``^^\\ZZXX33~0|hmPed*ugfedcb"Z}B{@[=S;:V8TSLp]\[0}K{hg+wd>&a$q9>[m}{92y0/S@210/.-,+*)('g2$#"!~P`uts[qp6#srqponmlkjihgfed##!ZYXW??>S<;9taSRQPONMLKJI,G*(b'&_$?"7[}4WEUC/vRtrqq;KmlH)5F~VC{dRb}<<MyK&%oWVlTjS/g,kw)bg'r$]bEC~XA/[Z=<uP(87p44O[GkKJ,fAeEbb&`^#\!m5:zE10w4-t+0)M:,+*)('&%$#"!~=<<t\xq7$tsrqponmlkjihgfedc"4!YXA\UT<XQubTSRQPONMLKJIHxeR('%;#^K=<;:9876543210/.-&\lkj'&}C0"!~}|{zyxwvutsrqp|hzlNwM(:98$#b4Z~B{?zgS;;ttT6qQ4\Hk//{h+G)cbbB$q^>JmHk9VV0vA3P>=`MKKmkZG'Egfdcca>_^^s[qvotml2}onmlkjihgfedcb"!YBWVUZSwdVUTSRQPONMLKJIHGdd(CB%@9]J<;:9876543210/.-,JkZj'hg|dA.~}|{zyxwvutsrqpo{g-+MvLKJ%qp"aC~|jz[Tf;d9O86_$3INMFjWIHGFEDCBA@?>=<;:927x5R3Ps*MMo,+[)jhE%f0/yQP+{]s'q%Htm2US//@PeMv((JH7G\4DCAj@>y,wWVONrpKJ2mMLXJ-yxdc>b&;$98\I;:9876543210/.-,+

Solver

name

GPT-6 Astra

type

llm-agent

model

GPT-6 Astra

provider

OpenAI

harness

codex

date

2026-09-05

metric

3/3 cases, native re-verification; 778 bytes

Run manifest

aggregate_cases_passed

15

base_commit

1b6ec77065b55047fbd22c2030ce60635defdc9b

epochs_verified

5

input_byte_index

21

model_version

GPT-6 Astra

Task notes

Fit fifteen public rows within 1,024 bytes.

Verification transcript (native VM, 5 epochs)

epoch 0 · seed 6bb5e0f127f9… · 3/3 cases

epoch 1 · seed e07ed9d340aa… · 3/3 cases

epoch 2 · seed 72ea20c4e8c4… · 3/3 cases

epoch 3 · seed 35a5933ecfa0… · 3/3 cases

epoch 4 · seed e03ac16a4715… · 3/3 cases

Reproduce

git clone https://github.com/oklo/malbolge-rungs
cargo run -p harness -- verify --rung L4.R1.hash-prefix-1-multicase --program solutions/hash-prefix-1-multicase/gpt-6-astra.mal --epochs 5 --verbose

Attempts

2 recorded attempts · best 3/3 native · latest 2026-09-05. Counts include privately submitted traces; details on submitting.

Recorded attempts