Privacy Policy

Last updated: 2026-04-26

1. Who we are

This Privacy Policy describes how Survey Tokens ("we", "us") processes personal data when you use SurveyTokens (the "Service") at https://surveytokens.org. The controller within the meaning of the GDPR is:

Survey Tokens Schwarzwaldallee 12, 4058 Basel, Switzerland E-mail: info@surveytokens.org

2. Data we collect

When you create an account and use the Service we process:

3. Legal basis & purpose

4. Recipients

We share data only with processors and partners strictly necessary to operate the Service:

Cryptocurrency transactions are inherently public on the respective blockchain. Your wallet address and the amount sent become part of the public ledger and cannot be deleted retroactively.

5. International transfers

Some of the processors above may be located outside the EU/EEA. Where this is the case we rely on Standard Contractual Clauses or comparable safeguards recognised by the European Commission.

6. Retention

Account data is kept while your account exists. Login attempts are retained for up to 90 days for security purposes. Transaction and withdrawal records are kept for as long as required by accounting and tax law (typically up to 10 years).

7. Cookies

We use only essential cookies required to keep you signed in (NextAuth session cookie). We do not use advertising cookies and we do not share data with ad networks.

7a. Self-hosted, privacy-preserving page-view analytics

To understand which pages visitors actually use, we run a small, self-hosted page-view analytics backend on our own infrastructure in Frankfurt, Germany (operated by the same operator listed above). Per page-load we collect: the requested URL, the referring domain (e.g. google.com), an approximate geographic region (country and region derived from the IP address), the device type (desktop/mobile/tablet), and the browser family. No cookies are set by this analytics tracker and no unique identifier is stored in your browser.

Cross-day re-identification is technically prevented: a daily-rotating HMAC of (IP address ‖ user-agent) is used as a short-lived pseudonymous session id; the secret rotates every UTC midnight, so a returning visitor cannot be linked across days from the database alone. The raw IP address is not stored. If your browser sends the Do-Not-Track (DNT) header or the Global Privacy Control (Sec-GPC) signal, the request is dropped before any row is written. Bot and crawler traffic is filtered out automatically. The aggregates are accessible only to the operator, are never shared with third parties, and are deleted after 12 months.

8. Your rights

Under the GDPR you have the right to:

To exercise any of these rights, contact us at info@surveytokens.org.

9. Changes

We may update this Privacy Policy from time to time. We will indicate the "Last updated" date above and, where the changes are material, notify registered users by e-mail.