If you run real field trials, your records belong here.

Proof is opening to agronomists, farmers, researchers and trial partners who work with treatment-and-control trials in arable systems. We're starting with biological and biostimulant trials.

Apply to contributeHow Proof works →
Illustrative · sample form
Proof Application
Contributor application form
PRF-APP-2026-...
Applicant
Applicant type
Independent agronomist
Region
████ · East of England
Crops you work with
Winter wheat · spring barley · oats
Trials you run
Treatment vs untreated control
Attribution preference
Named contributor
Review stage
Submitted·Under review·Decision
Typical review · 5–10 working days
Application · pending
Submit for review →

Proof is for people and organisations who create useful field evidence.

Recognised contributor classesv1 launch
  1. Class I
    Agronomists
    You already run trials across client farms. Proof gives those trials a permanent record and turns them into client-ready evidence.
  2. Class II
    Farmers and farm managers
    Your own trials are evidence. Proof helps you record them properly while keeping farm data private.
  3. Class III
    Researchers and institutions
    On-farm work often carries useful context that formal papers cannot fully hold. Proof preserves the trial, the method and the evidence.
  4. Class IV
    Trial partners and manufacturers
    Sponsored and manufacturer-supported trials can contribute too — with conflicts clearly declared on the record.
Four classes · same rulesApply individually at /apply

The record is the main object.

Everything else helps create it, explain it or use it responsibly.

Locked Proof Record
Permanent · citable · publicly inspectable
  1. 01Draft records
  2. 02Treatment-and-control comparisons
  3. 03Application evidence
  4. 04Outcome evidence
  5. 05Public redacted record pages
  6. 06Client evidence packs
  7. 07Addenda and responses to Evidence Queries

Proof only works if the rules are the same for everyone.

Contributors agree that:

  1. 01Records are structured.
  2. 02Conflicts are declared.
  3. 03Exact farm data stays private.
  4. 04Public redacted records remain public.
  5. 05Locked records are not quietly edited.
  6. 06Corrections happen through addenda.
  7. 07Failed, mixed and null results stay visible.
Equal standards

These standards apply equally to agronomists, farmers, researchers and manufacturers.

There is no contributor class with weaker rules.

A working system for evidence.

You can record trials over a season, attach evidence, lock records, publish the redacted version, and use the records in client-facing evidence packs.

  1. 01
    A working system for evidence
    Record trials over a season, attach evidence, lock records, publish the redacted version.
  2. 02
    Client-facing evidence packs
    Use records in evidence packs you can share with named, authorised clients.
  3. 03
    Permanent access to your own records
    Records you create remain yours to reference, cite and export. The core evidence loop is free for individual contributors.
Free.

For individual contributors, the core evidence loop is free. You keep access to your own records.

Apply to contribute.

Proof is building its first contributor cohort around careful, useful field evidence — not volume.

Apply now

Applications are reviewed individually. Most reviews take five to ten working days.

Proof
Farm evidence you can trust.
Mission

Make evidence accessible to every farmer globally.

© 2026 Proof. Independent evidence ledger.