FA-11913 / Scientific pipeline provenance / Member archive

A barcode tie assigns a specimen by manifest order · case 03

An ambiguous observed barcode is attributed to the first listed specimen.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

Manifest maps unique equal-length DNA barcode strings to specimen IDs. Observed barcode has the same length. Return the specimen at a unique minimum Hamming distance no greater than one, otherwise None. This controlled substitution-only decoder does not model sequencing error probabilities.

Why this case matters

A deterministic offline model of scientific specimen processing and provenance; explicit fixtures test the stated bookkeeping or processing acceptance rule.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
equidistant substitution ambiguous	`"specimen3"`	`null`	Failed

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