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FAIR DRAWS

Check a pull

Every pack draws one ticket from 0 to 999,999. Each card on a pack page owns a range of those tickets, as wide as its exact chance. Pick one of your opens and your browser checks it: the numbers come from us, the checking happens on your device.

Your fairness code
How a draw works — four steps, all checkable
  1. Your code is locked in first. Before you buy you are shown your code’s fingerprint (its SHA-256). Every purchase names that fingerprint, and a draw refuses any other.
  2. The ticket. HMAC-SHA256 with your code as the key, over “your seed:open number:block”, read as whole numbers from 0 to 999,999 with no bias. The first one is your ticket.
  3. The card. The card whose ticket range holds your ticket is yours. Every pack page lists each card’s range, from the same table the draw uses: fixed odds, 1,000,000 tickets.
  4. The pool. Each box’s physical cards have a fingerprint too. Every draw records the fingerprint it drew from and the one it left, so each box has one public chain, starting at the fingerprint published when it went on sale. Yours is a link in it.