This Privacy Policy explains how k4d ("we", "us") collects, uses, and shares information when you use https://www.k4d.io and related subdomains (the "Service"). It is meant for anyone who wants a straight answer about data.
1. Who processes data
k4d operates the Service, which is documentation, research, and read-only on-chain tools. The Service has no sign-in and creates no accounts. External products the Service documents or links to (MoonX, PayBox, MoonPay, skitty, Chromatika, block explorers, wal.app sites) process data under their own policies when you visit or use them.
2. Information we collect
- Standard server logs (IP address, user agent, request path, timestamps)
- Theme preference stored locally in your browser
We do not
- Require accounts or collect identity data
- Hold wallet keys or ask for seed phrases
- Sell personal information
3. How we use information
- Provide, secure, and improve the Service
- Debug outages and investigate security incidents
- Comply with law and enforce our Terms
4. Sharing
We share information with:
- Infrastructure processors (for example hosting such as Vercel) that run the Service under our instructions
- Authorities when required by law or to protect rights and safety
On-chain data displayed by our tools is already public on the networks it comes from.
5. Cookies and local storage
We use local storage for your theme preference. We do not set authentication cookies and do not run a third-party ad tracker as part of the core product.
6. Retention
We retain operational records for as long as needed to run the Service and meet legal obligations. On-chain data remains on public networks indefinitely and is outside our control. Server logs are kept for a limited operational window unless needed for security or legal reasons.
7. Security
We use industry-standard protections (TLS in transit, access controls). No method of transmission or storage is 100% secure.
8. Children
The Service is not directed to children under 16 (or the minimum age in your jurisdiction). We do not knowingly collect personal information from children.
9. International transfers
The Service may be hosted and processed in the United States or other countries where our processors operate. If you access the Service from elsewhere, you understand information may be transferred to those locations.
10. Your choices
- Clear site data in your browser
- Contact us with questions about server logs (we may retain limited records as required by law; on-chain data cannot be erased by us)
11. Region-specific rights
Depending on where you live (for example EEA/UK GDPR or certain U.S. state laws), you may have rights to access, correct, delete, or export personal data, or to object to certain processing. To exercise rights, contact the operators of k4d via https://www.k4d.io. We may need to verify your request.
12. Changes
We may update this Policy. The effective date at the top will change when we do. Continued use after an update means you acknowledge the revised Policy.
13. Contact
Privacy questions: contact the operators of k4d via https://www.k4d.io. See also our Terms of Service.
Last updated: September 27, 2026.