Index Document PSP-000 · 2026-05-17
Planisphere
Working draft · v0.1 logancross@live.com
PSP-000 · Capability landing

Variation,
measured.
Decisions,
projected.

Any set of comparable subjects. Any set of comparable categories. One sha-pinned, Merkle-rooted, NIST-mapped attestation any third party can recompute from the same inputs.

Read the capability See it in use
ClassSubstrate
RuntimeStdlib + numpy
OutputAttestation bundle
BrandPSP-001
N · 000° E · 090° S · 180° W · 270°
01 ·
The premise.
What we measure · How we project · Why it matters

A planispheric astrolabe projects a 3D celestial sphere onto a 2D plane while preserving angular relationships. We do the same thing for variation. Given any set of comparable subjects scored on any set of comparable categories, we produce a surface decisions can be made on — fast, defensible, and domain-agnostic.

01 · Substrate, not solution

We do not ship vertical applications. We ship the underlying measurement layer that vertical applications are built on.

02 · Comparability is the asset

The value is not the score. The value is that two scores from two contexts can be compared at all.

03 · Pluggable by design

Dynamic categories and pluggable formats are not features. They are the product.

02 ·
In the hand.
A working instrument · Not a roadmap
psp › planisphere measure ./fleet --fleet-id pilot-1
[ok] resolving subjects ······················· 6
[ok] discovering categories ···················· 5
[ok] projecting onto plane ····················· ✓
[ok] variance explained on PC1 ················· 0.701
[ok] distinct profiles ························· 5
[ok] attestation root ·························· 1cd0f2b4···3d28d
psp › planisphere verify ./bundles/pilot-1
{ "verified": true, "root_match": true, "artifact_mismatches": [] }

The substrate produces an artifact that any third party with the same inputs can recompute, byte-for-byte. Admissible under adversarial review, Inspector General audit, and Congressional inquiry. Reproducible from the inputs and the pinned analysis code alone.

Variation, measured. Decisions, projected.