Conformance

Check an implementation yourself.

A published method can be implemented in more than one place. Test vectors make the calculation checkable. Each vector provides complete inputs and the exact outputs required for a stated method version. Run them against an implementation, including the reference implementation, to test whether it conforms.

Test vectors

Example published vector for method v1.4

// v1.4-018, from /method/v1.4/vectors.json
{
  "id": "v1.4-018",
  "description": "seeded spread",
  "input":  { "capability": [5,3,3,1,2,5,4,4, /* ...32 in all */],
              "momentum":   [2,5,2,1,1] },
  "expect": {
    "score": 53,
    "band": "Developing",
    "lens": "Control",
    "primary_stage": "Sales Process",
    "local_root_cause": "Repeatability",
    "systemic_root_cause": "People"
  }
}

Only an implementation that returns the expected output for every published vector at a stated method version may declare conformance and describe its output using the Growth Score name.

Declaring conformance

A deployment that declares conformance publishes a manifest at the fixed path, including a bank or university instance carrying its own branding. Anyone can read it. If the implementation diverges from the stated method version, it must withdraw or lose its conformance declaration. The manifest makes the declared version and verification status inspectable.

Example conformance manifest

// /.well-known/growth-score.json
{
  "method_version": "v1.4",
  "vectors_passed": "v1.4-001..v1.4-048",
  "last_verified": "2026-08-03",
  "operator": "Example Bank plc",
  "scoring_path": "deterministic",
  "generative_model_in_scoring": false
}

The licence in one paragraph

Anyone may read, implement and administer the published measurement method, including commercially, without paying a licence fee for the method itself. An implementation that passes the published vectors for a stated version may describe its output using the Growth Score name, subject to the final licence terms. The conformance rule protects comparability across implementations.

Final licence wording pending legal review