FA-18829 / Time representation / Member archive

Certificate lifetime goes negative or is measured at converted event · case 04

The decoded time state disagrees with the explicit regression oracle for remaining.

Member previewVariant 4 · 3 implementations · 13 checks per implementation

Case contract

A timescale offset certificate declares coverage [start,end), publication instant, expiry instant, version and source identity. A query may use offset only inside coverage with a currently valid certificate and minimum accepted version. Query time and validation wall time are independent. Return status precedence identity/version/publication/expiry/coverage, admitted shifted coordinate, remaining validity and coverage margin.

Why this case matters

Clock transfer and timestamp consumers require preserved coordinate, phase, validity and elapsed-time semantics.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
fixture 8	`["expired", null, -1, [50, 50]]`	`["expired", null, 0, [50, 50]]`	Failed

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