What is it*
Kind
—
Canned
Dry
Produce
Dairy
Jar
From the garden
A gift
Made how / size
How much
Unit
Expires
Proved by
its receipt
a photo
a word
its code
the shape test
Where it came from
From the store
From a food bank
From the garden
In a shared jar
Handed to me
A gift
From whom
What it asks
free
by trade
a price
Price
How it travels
Hand to hand
The shelf
Pickup
Drop-off
Mail
Where
Tag (a jar, a club, a trip)
A word on the card
The shape test asks you to do a thing the card can witness: hold a planter , a jar , a handful of greens , an open hand , or a bite of food up to the outline on the glass — pick one, hold still, and it blinks seen . The picture is never kept; only the note stays on the card. A soft proof, honestly: it shows an object was held up, nothing more. The same step can witness a receipt laid flat — so the least private thing on the card can be proved without ever photographing it.
Your ledger lives on this phone. A hand card travels to the next phone in a square of ink — no server in the path. The fireside rule: not everything must be priced.