Privacy

The public experiment stores only the information needed to operate the participant wall and referral system: nickname, country, optional short message, participant number, payment amount, PayPal transaction identifiers, referral relationship and timestamps.

The public profile exposes the nickname, country, optional message, participant number, join date and referral count. Payment amount and PayPal identifiers are not displayed on public participant profiles.

No advertising trackers are included in this MVP. Before production launch, add the operator identity, contact details, retention periods, legal basis, deletion process and any jurisdiction-specific privacy disclosures required for the final deployment.