Left Hash

Privacy Policy

Last updated: 2/24/2026

1. Introduction

Left Hash, operated by Byldan LLC (“we”, “our”, or “us”), is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our Service.

By using Left Hash, you agree to the collection and use of information in accordance with this policy. If you do not agree with our policies and practices, please do not use our Service.

2. Information We Collect

2.1 Personal Information

We may collect the following personal information:

  • Email Address: When you sign in or subscribe to our email list
  • Wallet Address: When you connect to prediction markets (Polymarket, Kalshi)
  • User ID: Automatically generated when you create an account
  • Authentication Data: Information from OAuth providers (Google, Discord, GitHub, etc.)

2.2 Automatically Collected Information

  • Usage Data: Pages visited, time spent, features used
  • Device Information: Browser type, operating system, IP address
  • Location Data: General geographic location based on IP address (used for email consent compliance)
  • Cookies: Session cookies and preference cookies (see Section 7)

3. How We Use Your Information

We use your information for the following purposes:

  • Service Delivery: To provide and maintain our sports betting odds comparison service
  • Account Management: To manage your account and authentication
  • Email Communications: To send you marketing emails, betting insights, and feature updates (only with your consent)
  • Prediction Markets: To facilitate connections to third-party betting platforms
  • Analytics: To understand usage patterns and improve our Service
  • Legal Compliance: To comply with applicable laws and regulations
  • Security: To detect and prevent fraud, abuse, or security issues

4. Email Marketing Consent

We collect and use your email address for marketing purposes based on your location and consent:

  • US Users: We use an opt-out model (implicit consent) in compliance with the CAN-SPAM Act. You will be automatically subscribed to our email list and can unsubscribe at any time using the link in our emails.
  • EU/EEA/UK Users: We require explicit opt-in consent in compliance with GDPR. You will only receive marketing emails if you explicitly consent via our opt-in modal.
  • Canadian Users: We require explicit opt-in consent in compliance with CASL (Canada's Anti-Spam Legislation).

You can withdraw consent or unsubscribe at any time by:

5. How We Share Your Information

We may share your information with:

  • Service Providers: Third-party companies that help us operate our Service:
    • Resend (email delivery)
    • AWS (data storage and hosting)
    • Privy (authentication)
  • Prediction Markets: When you connect to Polymarket or Kalshi, we share necessary credentials with these platforms to facilitate trading
  • Legal Requirements: When required by law, subpoena, or court order
  • Business Transfers: In connection with any merger, sale, or acquisition of all or a portion of our business

We do not sell your personal information to third parties.

6. Data Security

We implement appropriate technical and organizational security measures to protect your personal information:

  • Encrypted data storage (AES-256)
  • Secure transmission protocols (HTTPS/TLS)
  • Access controls and authentication
  • Regular security audits

However, no method of transmission over the internet is 100% secure. While we strive to protect your information, we cannot guarantee absolute security.

7. Cookies and Tracking

We use cookies and similar tracking technologies to:

  • Maintain your session and keep you logged in
  • Remember your preferences and settings
  • Analyze usage patterns and improve our Service

You can control cookies through your browser settings. However, disabling cookies may affect your ability to use certain features.

8. Your Rights

Depending on your location, you may have the following rights:

8.1 GDPR Rights (EU/EEA/UK Users)

  • Right to Access: Request a copy of your personal data
  • Right to Rectification: Request correction of inaccurate data
  • Right to Erasure: Request deletion of your data (“right to be forgotten”)
  • Right to Restriction: Request limitation of processing
  • Right to Portability: Receive your data in a portable format
  • Right to Object: Object to processing of your data
  • Right to Withdraw Consent: Withdraw consent at any time

8.2 CCPA Rights (California Users)

  • Right to know what personal information we collect
  • Right to delete your personal information
  • Right to opt-out of sale (we do not sell your data)
  • Right to non-discrimination for exercising your rights

To exercise any of these rights, contact us at support@lefthash.com

9. Data Retention

We retain your personal information only for as long as necessary to fulfill the purposes outlined in this Privacy Policy, unless a longer retention period is required by law. When you request deletion, we will delete or anonymize your data within 30 days, except where we must retain it for legal compliance.

10. International Data Transfers

Your information may be transferred to and maintained on servers located outside of your country. If you are located in the EU/EEA, we ensure appropriate safeguards are in place for international transfers, such as Standard Contractual Clauses (SCCs) approved by the European Commission.

11. Children's Privacy

Our Service is not intended for individuals under 18 years of age (or the legal gambling age in your jurisdiction). We do not knowingly collect personal information from minors. If you believe we have collected information from a minor, please contact us immediately.

12. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any material changes by:

  • Posting the new Privacy Policy on this page
  • Updating the “Last updated” date
  • Sending you an email notification (for significant changes)

Your continued use of the Service after changes become effective constitutes acceptance of the updated Privacy Policy.

13. Contact Us

If you have questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us:

Email: support@lefthash.com

Company: Byldan LLC

14. Supervisory Authority

If you are located in the EU/EEA and believe we have not addressed your concerns appropriately, you have the right to lodge a complaint with your local data protection supervisory authority.