shunya tenders
Zero-knowledge
The firm knows everything.
The firm knows everything.
The public learns nothing.
Two panels. Left: a firm's full private bid (identity, amount, secret). Right: what goes public. A zero-knowledge proof carries eligibility and budget compliance across the gap; identity and amount never cross.
The bidder — private
The firm's full bid. None of these values appears in the proof.
None of the five values above is revealed. The proof carries only the two facts below.
The buyer & public
What everyone sees: a valid proof plus public values that identify neither the firm nor its amount.
Eligible ✓ proven
In budget ✓ proven
One bid only ✓