Privacy Policy

sharp.go (research project)
[email protected]

The service is not operated by a registered legal entity. For data-protection requests, contact us at the address above.

This Privacy Policy describes how the controller processes personal data in connection with the sharp.go website and the sharp.go Weiqi game.

When you use sharp.go we process the following categories of data:

• Account data — email address, display name, and authentication identifiers provided via our identity provider.
• Gameplay data — moves played, match results, timing, and matchmaking metadata necessary to deliver the service.
• Device & connection data — IP address, user agent, approximate region, and timestamp, used for rate limiting, abuse prevention, and diagnostics.
• Cookies — strictly necessary cookies for session management, plus optional analytics cookies as described in our Cookie Policy.

We process the data above for the following purposes under the legal bases indicated:

• Service delivery and account management — performance of a contract.
• Security, fraud prevention, and abuse mitigation — legitimate interest.
• Aggregated analytics — consent (withdrawable at any time via the cookie banner).
• Legal compliance and tax / accounting obligations — legal obligation.

Account data is retained for as long as your account is active and for 30 days after deletion to comply with bookkeeping obligations. Gameplay data may be retained in aggregated form indefinitely.

Depending on your jurisdiction (GDPR, CCPA, LGPD, APPI, PIPA, etc.) you have the right to access, correct, delete, port, restrict, or object to the processing of your personal data, and to withdraw consent.

To exercise these rights, contact [email protected]. We respond within the statutory deadline (typically 30 days).

We share personal data only with the following categories of recipients:

• Hosting and infrastructure providers acting under written processing agreements.
• Analytics provider (Google Analytics 4) — only when you have granted consent.
• Payment processors — only for paid features.
• Law enforcement — only when compelled by valid legal process.

Material changes are announced at least 14 days before they take effect via in-product notice and email to active accounts.