For informational & educational purposes only. Not financial advice. No guarantee of outcomes. Users are responsible for compliance with local laws. 18+. Read full disclaimer →

Cookie Policy

Last updated: January 2026

What are cookies?

Cookies are small text files your browser stores when you visit a website. They let sites remember you between sessions. Modern web apps also use localStorage and sessionStorage, which work similarly.

Categories we use

  • Strictly necessary — required for authentication, age verification, and checkout. Cannot be disabled.
  • Analytics (opt-in) — only set if you click "Accept all" in the cookie banner. Helps us improve the product.
  • Marketing — we do not currently use marketing cookies.

Specific cookies in use

NamePurposeTypeDuration
sb-access-token / sb-refresh-tokenSupabase authentication sessionStrictly necessary1 hour / 30 days
polysharks_age_verifiedRemembers you confirmed 18+Strictly necessary1 year
polysharks_cookie_consentStores your cookie preferencesStrictly necessary1 year
stripe_mid, stripe_sidStripe fraud prevention for checkoutStrictly necessarySession / 1 year
_ga, _gid (if enabled)Google Analytics — aggregate page viewsAnalytics (opt-in)2 years / 24 hours

How to control cookies

You can (a) accept or reject analytics cookies in the banner that appears on your first visit; (b) change your choice at any time by clicking "Manage Cookies" in the site footer; (c) block all cookies in your browser settings (note: strictly-necessary cookies are required — blocking them will break sign-in and checkout).

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Compliance & Disclosures

PolySharks.ai is a market-intelligence and analytics platform operated by 8eight8 LLC. The site is provided for informational and educational purposes only — it is not financial, legal, tax, or gambling advice. Past whale performance and historical data carry no guarantee of future outcomes. Trading prediction markets involves substantial risk of loss, including 100% of principal. Users are solely responsible for compliance with the laws of their local jurisdiction — prediction-market access is restricted or prohibited in some US states and countries; verify legality before depositing or trading on Polymarket or Kalshi. PolySharks does not custody funds and is not affiliated with Polymarket Inc. or Kalshi Inc. 18+ only (21+ in some jurisdictions).