A Proof Record earns trust by what it shows.

Proof does not ask readers to believe a claim. It shows what was tested, what it was compared against, what happened, what evidence supports it, and what limits apply.

A Proof Record is not a product verdict. It does not say a product works everywhere.

It records one outcome under stated conditions. The reader can inspect the treatment, control, crop, soil, season, evidence, conflicts and history.

That is where trust comes from.

The same record, two views.

On the left, the public projection — what anyone can inspect. On the right, the private envelope — held but not exposed. The two together show how Proof balances public evidence with private farm data.

Public projectionVisible record
What a public record shows

Visible to anyone.

Crop
Winter wheat
Season
2025/26
Broad region
████ · Lincolnshire
Soil type
Heavy clay
Product category
Foliar plant biostimulant
Treatment
Applied at GS31, single application
Control
Untreated plot, same field, same management
Application timing
12 April 2026
Outcome
+0.41 t/ha vs untreated (95% CI: +0.12 to +0.70)
Evidence
5 items · weighbridge tickets, yield data, tissue analysis, field notes, photographs
Conflicts
None declared
Addenda
0 filed
Record history
Locked 14 Mar 2026 · no edits
13 fields · enough to inspect the evidence
Private envelopeControlled data
What the private envelope holds

Held. Not exposed.

Exact farm name
████████
Field boundary
Held in private envelope · GeoJSON polygon
Raw GPS
████████
Raw files
Held in private envelope · 47 files · 2.3 GB
EXIF data
Held in private envelope · stripped from public images
Invoices
████████
Unredacted lab reports
Held in private envelope · 3 reports
Private notes
████████
Legal identity
Where private attribution is used — held in private envelope
9 fields · enough to support the record · not enough to identify the farm

Private does not mean absent. It means controlled. The private envelope holds the sensitive detail behind the record under role-based access — accessible to the contributor and to named, authorised clients, never published by default.

Corrections are added. The original stays.

Once a record is locked, it cannot be quietly rewritten. If something needs correcting, the correction is added as an addendum. If more evidence arrives, it is added to the record history. If someone raises a structured question, that becomes part of the record process.

  1. Addendum 022026-09-14
    Additional yield data received from second harvest weighing. Outcome estimate narrowed. Original record unchanged.
  2. Evidence Query2026-07-22
    Independent reviewer asked about plot randomisation method. Contributor responded with field map. Both visible on the record.
  3. Addendum 012026-04-18
    Corrected typo in soil-type classification. Original value preserved in addendum history.
  4. Original recordLocked 2026-03-14
    The original record remains visible. It is never silently rewritten.

A positive result can be weak evidence. A null result can be strong evidence.

Dimension IOutcome
What happened

The recorded outcome of the trial.

  • Positive
  • Null
  • Negative
  • Mixed

Outcome tells you what happened. It does not tell you how well the trial was run.

Dimension IIEvidence quality
How well it was run

How well the trial was structured.

  • Control
  • Method
  • Protocol
  • Evidence
  • Conflicts
  • Declared limits

Quality depends on the structure. It does not depend on the direction of the outcome.

A recorded outcome, not a product verdict.

Read the records.

The best way to understand Proof is to inspect a record and see the structure for yourself.

Proof
Farm evidence you can trust.
Mission

Make evidence accessible to every farmer globally.

© 2026 Proof. Independent evidence ledger.