Fine NPT neighborhood around T512-N4
An adjacent integer NPT value 3, 5, 6 or 7 improves the confirmed NPT4 default by at least 0.2%.
Diagnostic work, exact algebra and local capabilities are not treated as end-to-end mining advantage.
What was tested?
An adjacent integer NPT value 3, 5, 6 or 7 improves the confirmed NPT4 default by at least 0.2%.
Why the test is meaningful
Local-neighborhood testing checks whether a selected discrete geometry is a real local optimum without reopening a broad tuning search.
candidates NPT={3,5,6,7}baseline NPT=4gate R≥1.002 with robust directionHow it was tested
Use TPB512, a common exactly divisible batch of 134,184,960 hashes, four unseen headers and 40 measurements.
What happened
NPT5 was best at 1.000374×, 95% interval 0.999283–1.001466, positive on 3/4 headers and above the gate on 0/4. All exactness and resource gates passed.
Exactness and statistical controls
The confirmed NPT4 binary remained fixed; no neighbor was promoted from a sub-gate maximum.
What the result means
T512-N4 remains the local optimum among registered integer neighbors.
Limitations
- Only NPT 3–7 around the local point was tested.
- A different mechanism remains possible.
- No new energy test is warranted.
Evidence trail
Use the common divisible workload and compare every neighbor against the same frozen NPT4 binary.
Canonical variants
CANONICAL-EXP-148PREREGISTERED-CAMPAIGNSEALED-AUDITSource: internally audited canonical reports. Local filesystem structure, private headers and operational identifiers are excluded from publication.