Turn field records into client-ready evidence.
Client Evidence Packs collate locked Proof Records, authorised private evidence, public record links and agronomist notes into a structured document for one client, one season and one crop scope.
Records remain the evidence objects. Packs collate them for client review.
The record is the evidence object. The pack is the client-facing collation.
A Proof Record is permanent, structured, and published as a public redacted projection. A Client Evidence Pack is a document generated from selected Proof Records for a named client, season and crop scope. The pack does not replace the records. It does not rewrite them. It does not turn them into recommendations.
The pack collates what was tested, what happened, what evidence exists, how strong the record structure is, what conflicts were declared, what private evidence is authorised for the named client, and what public links can be shared freely.
Agronomists already run trials. Farmers already ask what happened.
Evidence often sits in folders, spreadsheets, slide decks and memory. Proof turns that seasonal work into a structured record base, and then turns the record base into a professional client document.
- 01Explain trial outcomes clearlyEach record is presented with what was tested, against what, with what evidence and with what outcome. Outcome direction is shown alongside evidence quality.
- 02Keep null and negative results visibleLocked records are not filtered out by outcome direction. A null or negative record sits in the pack alongside a positive one.
- 03Show evidence without overclaimingThe pack collates evidence; it does not draw recommendations. Agronomist notes are attributed and separated.
- 04Separate public records from private farm evidencePublic Proof Record links can be shared freely. Private contents stay between named authorised parties.
- 05Prepare end-of-season client reviewsThe pack is a structured artefact for the agronomist-client review conversation. It does not replace the conversation; it gives it a shared reference.
- 06Identify next-season evidence opportunitiesEach record can carry forward into stronger protocol design, randomisation, replication or independent review next season.
- 07Build trust over timeAcross seasons, the pack becomes a longitudinal record of agronomist work on a farm. Trust-state progression and addenda accumulate visibly.
The anatomy of a Client Evidence Pack.
Every pack is generated from structured records. The same sections appear in every pack, in the same order, with content drawn from the records and the authorisations attached to them.
- 01Pack coverClient, season, crop scope, inventory summary, pack UID and confidentiality band.
- 02Record inventoryNumbered list of every locked record included, with UID, crop, title, outcome and evidence state.
- 03Evidence summaryCrops covered, product categories, trial types, outcome directions and evidence states across the pack.
- 04Individual record pagesOne page per record, with what was tested, control, field context, outcome, evidence included, conflicts, addenda and Evidence Query state.
- 05Public record linksResolvable links to the public projections of each included record.
- 06Authorised private evidenceWhere authorised, raw evidence files and private field references for the named client.
- 07Evidence Query stateAny open or addressed Evidence Queries on each record.
- 08Addenda stateAny addenda filed on each record. Original record content stays; addenda are dated and attributed.
- 09Conflict declarationsAny contributor affiliations or sponsorships declared on each record.
- 10Benchmark context where availableCohort context where the privacy threshold is met. Comparable evidence, not product recommendation.
- 11Agronomist notesAttributed interpretive notes per record, separated from the Proof institutional voice.
- 12Next-season evidence opportunitiesSuggestions for strengthening records in the following season.
- 13What this pack does not claimA standard statement on the limits of the pack as evidence.
The cover sets the scope.
Every pack opens with a cover identifying the named client, the agronomist preparing it, the season and crop scope, a record inventory summary, and a confidentiality band.
Hawthorne Estate — biological inputs evidence, 2025/26 season
A client evidence pack generated from locked Proof Records, public redacted projections and authorised private evidence.
Prepared for authorised client use. Public Proof Record links inside this pack may be shared freely. Private farm references, field-level evidence and agronomist notes are included only with the named client's authorisation.
The inventory lists every record. It does not rank them.
Records included in this pack
| # | UID | Crop | Title | Outcome | Evidence state | Conflict |
|---|---|---|---|---|---|---|
| 01 | PRF·UK·2026·000247 | Winter wheat | Plant biostimulant compared with untreated control | +0.41 t/ha vs untreated | Structured · Protocol locked | None declared |
| 02 | PRF·UK·2026·000183 | Spring barley | Microbial seed treatment compared with untreated control | No measured difference | Structured · Protocol locked | None declared |
| 03 | PRF·UK·2026·000312 | Winter wheat | Foliar biofertiliser comparison | −0.18 t/ha vs untreated | Structured | None declared |
| 04 | PRF·UK·2026·000091 | Oilseed rape | Biostimulant programme on established crop | Mixed across measures | Structured · 1 addendum | None declared |
| 05 | PRF·UK·2026·000156 | Winter wheat | Biostimulant on establishing crop | Observational record | Observational | None declared |
| 06 | PRF·UK·2026·000358 | Spring barley | Biological seed treatment programme | Mixed across measures | Structured · Protocol locked · Evidence Query open | None declared |
The inventory does not rank the records. Rows are ordered by record number, not by outcome direction.
What the pack contains, summarised.
Pack contents at a glance
- Records included
- 6
- Crops covered
- Winter wheat · Spring barley · Oilseed rape
- Product categories
- Plant biostimulants · Biofertilisers · Biological seed treatments
- Trial types
- Treatment / control comparisons · Observational
- Outcome directions
- Positive · Null · Negative · Mixed · Observational
- Evidence states
- Recorded · Structured · Protocol locked · Evidence Query open · Addendum
Outcome direction is not evidence quality. A positive record under a weak control is not stronger than a null record under a tightly locked protocol.
One page per record. Structured by section.
The record page in the pack mirrors the structure of the underlying Proof Record, with one important addition: where the named client has authorised it, private farm context can be shown alongside the public projection.
Winter wheat — plant biostimulant compared with an untreated control
- Yield file (combine telemetry) · public metadata · private raw file authorised for client
- Application photographs · public redacted derivatives · private raw files authorised for client
- Protocol document · public redacted derivative
- Product batch reference · private to client and contributor
- Agronomist field notes · private to client and contributor
Strip trial against an untreated control at T1, with strips placed across the field's typical management zones. Results are encouraging but the control was not randomised, and the dry spell after T1 application means establishment-stage stress varied across both strips. Worth repeating in 2026/27 with a pre-application protocol lock and a small randomised plot trial alongside the strip work. The +0.41 t/ha figure should be read as one season under specific conditions.
What may be shared freely. What stays between authorised parties.
Every pack distinguishes between contents that are part of the public ledger — which can be shared with anyone — and contents that are private to the named client and authorised parties only.
Public Proof Record · PRF·UK·2026·000247
- Location
- ████ · Lincolnshire · Heavy clay
- Crop
- Winter wheat
- Season
- 2025/26
- Treatment
- Plant biostimulant at T1
- Control
- Untreated, same management
- Outcome
- +0.41 t/ha vs untreated
- Trust pips
- Recorded · Structured · Protocol locked
- Manifest hash
- 92b7·31fc·c0a8·d52f
Resolvable at the public records explorer. Anyone can read this; the hash continues to resolve.
Same record · authorised private context
- Farm
- Hawthorne Estate
- Field
- Field 14 · 12.4 ha
- Crop
- Winter wheat
- Season
- 2025/26
- Treatment
- Plant biostimulant at T1
- Control
- Untreated, same management
- Outcome
- +0.41 t/ha vs untreated
- Authorised private files
- Raw yield file · raw application photos · agronomist notes
Visible only because the named client is authorised. Authorisation is per-pack and logged.
Public Proof Record links may be shared freely. Private contents of the pack stay between the named authorised parties.
For the full privacy architecture, see Data and privacy →
Comparable cohorts, where the privacy threshold is met.
Where comparable public records exist in sufficient number, the pack can include a benchmark context section: the shape of the cohort, the distribution of outcomes, the median delta. Where the privacy threshold of five records across three farms and two contributors is not met, the section is omitted.
Comparable public cohort · winter wheat · plant biostimulant · heavy soil group · 2024–2026
- Records
- 27 comparable records
- Outcome mix
- Positive 9 · Null 11 · Negative 5 · Mixed 2
- Median delta
- +0.12 t/ha
- Range
- −0.21 to +0.38 t/ha
- This record (PRF·UK·2026·000247)
- +0.41 t/ha
Benchmark context is shown only where privacy thresholds are met. It describes comparable evidence, not product recommendation.
Interpretive notes are attributed and separated.
Records are evidence. Notes are interpretation. The two appear in the same pack but in distinct visual registers: records carry Proof's institutional structure, notes carry the agronomist's name and voice.
Strip trial against an untreated control at T1, with strips placed across the field's typical management zones. Results are encouraging but the control was not randomised, and the dry spell after T1 application means establishment-stage stress varied across both strips. Worth repeating in 2026/27 with a pre-application protocol lock and a small randomised plot trial alongside the strip work. The +0.41 t/ha figure should be read as one season under specific conditions.
Notes are interpretive and attributed to the agronomist. They sit beside the Proof Record; they do not change it.
Agronomist notes are interpretive. Proof Records remain the evidence objects.
What a pack does not claim.
- 01A pack does not claim that any product works in general.
- 02A pack does not rank products.
- 03A pack does not recommend products.
- 04A pack does not replace agronomic judgement.
- 05A pack does not turn one recorded outcome into a general claim.
- 06A pack does not expose private farm data publicly.
Packs are generated from structured records, not assembled from scratch.
The contributor flow is structured. Selection happens against the existing evidence base; visibility is set per-evidence-item; authorisation is explicit and logged; the pack itself is hashed at generation.
For the Workbench surface, see Contributor Workbench demo →
- 01Select clientChoose the named client farm the pack is being prepared for. Permissions are checked at this step.
- 02Select season and crop scopeLimit the pack to a defined season and one or more crops. The scope appears on the pack cover.
- 03Choose locked recordsAdd locked Proof Records relevant to the client, season and scope. Drafts cannot be included; only locked records appear in client packs.
- 04Review evidence visibilityReview each record's Evidence Manifest. Public derivatives are included by default; raw private files require explicit per-pack authorisation.
- 05Confirm authorised private evidenceExplicitly authorise any private evidence to be included for this client. Authorisation is per-pack and logged.
- 06Add agronomist notesWrite interpretive notes per record. Notes are attributed to the agronomist, not to Proof. They sit beside the records, not inside them.
- 07Add benchmark context where availableWhere comparable public cohorts pass the privacy threshold, benchmark context is offered for inclusion. Where not, it is omitted.
- 08Review what the pack does not claimThe 'does not claim' page is included automatically. Review it before generation to confirm the framing matches the client conversation.
- 09Generate packThe pack is built, hashed, given a UID, and stored in the Workbench under the client farm. The underlying records do not change.
- 10Export PDF or share controlled linkThe pack can be exported as a PDF or shared with the named client through a controlled link with audit logging.
Other structured pack formats are planned. None change the public ledger.
The same generation principles apply: built from locked records, public/private boundaries enforced, authorisations explicit, no implication of guaranteed commercial outcomes.
- Buyer Evidence PacksComing soonPacks designed for conversations with buyers, processors and grain traders. May support stronger buyer conversations where recorded evidence matters. They do not guarantee premiums, buyer acceptance or commercial outcomes.
- Supply-chain Evidence PacksComing soonPacks prepared for supply-chain partners and assurance workflows. Built on the same redaction and authorisation rules as Client Evidence Packs.
- Assurance Evidence PacksComing soonPacks prepared for assurance scheme submissions. Cite public Proof Records by UID and hash; authorised private evidence by explicit scheme participation.
- Multi-season Evidence PacksComing soonPacks spanning multiple seasons of work with a single client. Tracks repetition, trust-state progression, and addenda across years.
- Research Cohort PacksComing soonPacks prepared for research partners working on cohort studies and methodology development.
Apply to contribute.
Client Evidence Packs are available to verified contributors. Individual contributors are never charged to create records, lock them, or generate packs.
Client Evidence Packs turn structured records into client-facing evidence without changing the public ledger.