Privacy Policy

Effective Date: February 9, 2026 路 GrailVault is operated by JMKA LLC

1. Information We Collect

We collect the following types of information when you use GrailVault:

  • Account Information: Name, email address, phone number, and profile details you provide during registration.
  • Transaction Data: Purchase and sale records, payment information, shipping addresses, and order history.
  • Listing Data: Item descriptions, photos, pricing, grading information, and other details you include in listings.
  • Device & Usage Data: IP address, browser type, device information, pages visited, and interactions with the Platform.

2. How We Use Your Information

We use the information we collect for the following purposes:

  • Account Management: Creating and maintaining your account, authenticating your identity.
  • Transaction Processing: Facilitating purchases, sales, payments, and shipping.
  • Communication: Sending transactional notifications about your orders, listings, and account activity.
  • Fraud Prevention: Detecting and preventing fraudulent activity, counterfeit listings, and policy violations.
  • AI Authentication: Analyzing item images to verify authenticity and provide grading assessments.

3. Phone Number & SMS Data

Your phone number is collected when you voluntarily provide it for your account or during checkout. We take your phone privacy seriously:

  • Your phone number is used only for transactional notifications, including order updates, shipping notifications, and account security alerts.
  • Your phone number is not shared with third parties for marketing purposes.
  • Your phone number is not used for promotional or marketing messages.
  • Message frequency varies based on your transaction activity.
  • Message and data rates may apply.
  • Opt-out: Reply STOP to any message at any time to unsubscribe from SMS notifications.
  • Help: Reply HELP to any message or contact GVsupport@grailvaultmail.com for assistance.

4. Third-Party Services

GrailVault uses the following third-party services to operate the Platform:

  • Supabase: Authentication and database services.
  • Stripe: Payment processing.
  • Twilio: SMS and text messaging services.
  • Anthropic: AI-powered authentication and item analysis.
  • Vercel: Website hosting and deployment.

Each third-party service has its own privacy policy governing how they handle your data. We only share data with these services as necessary to provide Platform functionality.

5. Data Sharing

We do not sell your personal information. We share your data only in the following circumstances: as needed to complete transactions between buyers and sellers; with service providers who assist in operating the Platform; when required by law, legal process, or government request; and to protect the rights, property, or safety of GrailVault, our users, or the public.

6. Data Security

We implement industry-standard security measures to protect your personal information, including encryption, secure data storage, and access controls. However, no method of transmission over the Internet or electronic storage is 100% secure, and we cannot guarantee absolute security.

7. Your Rights

You have the following rights regarding your personal information:

  • Access: Request a copy of the personal data we hold about you.
  • Correction: Request that we correct any inaccurate or incomplete information.
  • Deletion: Request that we delete your personal data, subject to legal and contractual obligations.

To exercise any of these rights, contact us at GVsupport@grailvaultmail.com.

8. Children's Privacy

GrailVault is not intended for use by children under the age of 13. We do not knowingly collect personal information from children under 13. If we become aware that we have collected personal information from a child under 13, we will take steps to delete that information promptly.

9. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated effective date. Your continued use of GrailVault after any changes constitutes your acceptance of the revised policy.

10. Contact

If you have any questions about this Privacy Policy, please contact us:

JMKA LLC

Email: GVsupport@grailvaultmail.com