One farmer works 180 hectares in the East of England. This is the story of one thing he tried, written down once — and everyone who ended up relying on it, from his bank to a supermarket label.
synthetic scenario · about 90 seconds · swipe or use the arrows
Everyone in the food chain needs proof of what happened in the field. Today, none of them can get it without a mountain of paperwork — and even then it's a claim, not evidence.
"I fill in the same forms for my buyer, my insurer, my bank and two schemes. Every year. By hand."
— every farmer
"We printed 'sustainably grown' on the pack. The regulator asked us to prove it. We couldn't."
— every food brand
"The brochure says +8% yield. Nobody can show me a single farm where that actually happened."
— every buyer of farm products
He splits one field down the middle. Left half: his normal routine. Right half: less fertiliser plus a new biological treatment. He fixes how he'll measure the result before he starts — so nobody can move the goalposts later. That decision is what turns a farm diary into evidence.
What he saw, what he decided, what he actually did, and what happened — each is a separate entry, connected in order. Photos, machine logs and weighbridge tickets attach as they happen. If a step is missing, Proof says so — it never pretends.
No spin either way: 0.2 tonnes per hectare more, with less fertiliser. The record also says what it doesn't prove — one field, one year. The little squares show how far the evidence has been checked.
Proof record · PRF-UK-A-000231
Less fertiliser + treatment: 8.2 t/ha.
Normal routine: 8.0 t/ha.
both weighed on the same weighbridge · East of England · 2025
checked to level 3 of 6: the method was fixed before the work began
What this record does not claim: that it works everywhere. One field, one season.
See the actual recordWhen his buyer asks for evidence, he sees exactly what they'll get before he says yes. His name, his location and his prices are stripped out. The result travels; the private stuff never does.
Blackthorn Farm → "a verified farm"
52.2412° N, 0.8933° W → "East of England"
£214 per tonne → kept private
8.2 vs 8.0 t/ha, less fertiliser → shared, untouched
Watch it happenThe split-field idea came from his adviser, J. Mayhew. Her name stays attached wherever the record travels. Over a career, that becomes something no CV can fake: a public track record of advice that worked — and honesty about the advice that didn't.
Credit stays attached
Designed by J. Mayhew, Fenland Agronomy · already re-used in two evidence packs · her clients' results, her name
See her dashboardHis result drops into a spread of comparable farms: same crop, same kind of soil, same way of measuring. Not a league table, not a score out of ten — just where his dot sits among farms like his, and which of their records are worth reading.
His trial joins 32 others of the same product — the good, the bad, and the "made no difference". The company can't hide the bad ones, and that's the point: it's the first product evidence their buyers actually believe. Gaps in the evidence become the next trials they fund.
Their paid dashboard shows
33 trials in this scenario · 10 good · 4 poor · 7 no difference · the rest still growing
updates by itself as harvests come in · poor results always visible
See what they pay for"Grown with 20% less carbon." Click the claim and the receipts unfold: 19 farm records support it, 3 point the other way, 9 are still incomplete — all on show. When the regulator or a journalist asks, the answer takes thirty seconds, not thirty days.
Every claim shows its receipts
19 support it · 3 disagree · 9 incomplete — nothing cherry-picked, ever
This record is one of the 19 · the farm's identity never appears
See the claim and its receiptsWhen his insurance renews, the evidence is already there — he just approves what they see. When his bank releases the next slice of his equipment loan, it checks the machine log, not a promise. Same records, zero re-typing. That's the kind of friction this is built to remove.
Insurance renewal
4 evidence items · answered from existing records · 0 forms filled in
Loan drawdown
released against the logged purchase · not a promise
Government sees his region improve — never his farm, never his name; small groups are hidden automatically. And because the record can never be quietly edited, a university can reference it like a published paper, checkable in ten years.
Proof Record PRF-UK-A-000231 — split-field trial, East of England, winter wheat, 2025. Method fixed before work began. proof.ag/records/PRF-UK-A-000231.
See the national picture How scientists cite itThat's the model. Farmers put evidence in and get their paperwork done for free. Everyone who needs to rely on that evidence pays for the depth of their view. And no tier, at any price, buys a friendlier number.
Farmer
puts evidence in · paperwork answered for free
Adviser
pays for the client dashboard · builds a public track record
Product maker
pays to watch every trial of their product · warts and all
Food brand
pays for claims with receipts · label survives scrutiny
Insurer
pays for evidence on demand · claims that could settle in days, not weeks
Bank
pays to lend against reality · green loans that hold up
Government
pays for live regional truth · no spreadsheet returns
Science & standards
pay for citable, checkable data · reproducible forever
Farmers, advisers, scientists, manufacturers, insurers, banks, government, standards bodies and food brands — all working from the same evidence, each seeing only what they're allowed to.
Explore the full demo Open the record itself