Proof — Custom benchmarks & targets

Build a benchmark

live · computed from 780 authorised records · groups under 5 always withheld

Measure

Crop

Season

Region

Min evidence standing

Compatibility

Group A · practice

Compare with · Group B

Open matching records

Method is attached to every figure: metric, denominator and inclusion rules travel with the benchmark. A saved definition is private until reviewed. It can never rank named farms, and no group under 5 is ever shown.

Definitions

one engine for every workspace — a target can never masquerade as a standard

Definition	Owner · version	Target	Status
Nutrient-reduction pathway to 2030	policy team · v3 · effective 2024–30	kg N surplus/ha · pathway + deadline	private
Net-zero programme pathway	policy team · v1 · effective 2025–40	t CO2e/ha · trajectory	private
Approved international reference set	statistics team · v2	reference · no target	mapped & reviewed · reusable
ASC soil-health framework band	standards council · v4	SOM % band · LOI	mapped & reviewed · reusable
Member baseline · 2023 reference year	standards council · v1	reference · no target	private
CO2e/tonne reduction pathway to 2030	Nunhill Mill · v2 · deadline 2030	0.30 t CO2e/t · trajectory	private
Verified-volume share target	Nunhill Mill · v1 · deadline 2028	90% of volume from evidenced suppliers	private
Water measure baseline	Nunhill Mill · v1	coverage 12% — too thin to claim any status	status withheld

Every definition retains: owner · source · version · effective dates · metric, unit and basis · method and system boundary · denominator · included and excluded records · limitations · status. Target value, pathway and deadline are optional fields.

Target tracking · actual vs pathway

gap-to-target per measure · coverage beside every status

on pathway

status per measure · never composite

68%

evidence coverage behind the line

n=1,046

measured records in the denominator

Roll-ups never silently pool incompatible boundaries — the custom target can sit beside Proof, national and international references with the different methods kept visible (see benchmarks).

Private → reusable · the review gate

A definition starts private. It becomes a reusable Proof benchmark only after explicit mapping and review — metric, unit, basis, method and boundary aligned to canonical vocabularies, inclusions and limitations checked. Until then it can guide your own tracking but never appears to anyone else as an established standard.

Engine rules (identical in every workspace): coverage shown next to every status; no pooling across incompatible boundaries; no composite score of any kind; a status is never declared where the evidence is too thin; k=5 throughout. Each workspace adds only its own forbidden-score guardrail on top.