Public record

Willingness to pay for reusable coffee cups

Closed

100 / 100 answers recorded

Opened 4 Oct 2026, 20:44 UTC · closed 4 Oct 2026, 20:50 UTC

Plan as registered

Example study for the ProofPoll demo. Students on campus are asked whether they would pay more for coffee in a reusable cup. Planned: 100 participants, recruited by QR code in the cafeteria.

1. Would you pay 10% more for your coffee if it came in a reusable cup?
Yes · No · Not sure
2. How often do you buy coffee on campus?
Daily · A few times a week · Rarely
3. To show that you are reading carefully, please select "Somewhat agree".
Strongly agree · Somewhat agree · Disagree

Exclusion rules

Answers that fail the attention check (question 3) are excluded before analysis.

Answers that fail the attention check are excluded.

Plan registered: Recorded
4 Oct 2026, 20:44 UTCView transaction(opens Solana Explorer in a new tab)
Plan fingerprint: ca6008e2b75a06562878a997fc067b01204ffcb977bb46e65d3bcaffed509359
SHA-256 of the title, study plan, planned participants, questions and exclusion rules. Anyone can recompute it from the plan shown here.
Record address: 3DQqN59gTJVcd6h2ckBekV48Jb5KH7rt71XDwNptUnpb
See all records on Solana(opens Solana Explorer in a new tab)

Answers on Solana

Only fingerprints are public. Each one is a salted SHA-256 of one participant's answers, recorded on Solana devnet the moment the answer arrived.

#	Answered	Fingerprint	Record
1	4 Oct 2026, 20:44 UTC	e27872ed…72aa73	Recorded(opens Solana Explorer in a new tab)
2	4 Oct 2026, 20:44 UTC	f31d8ce8…6d85f8	Recorded(opens Solana Explorer in a new tab)
3