Verify: List Contains

This pattern is useful when you maintain a list of eligible principals (e.g., allowlist, winners, early users).

When to Use

• The quest is completed by a specific set of users (e.g., "Is the user in the list of beta testers?").

Motoko Example

let eligiblePrincipals : [Principal] = [
  Principal.fromText("aaaaa-aa"),
  Principal.fromText("bbbbb-bb"),
  // ...
];

public query func verifyAllowlist(principal : Principal) : async Bool {
  return Array.find<Principal>(eligiblePrincipals, func x = x == principal) != null;
}

Integration

• ICQuests will call this method and award XP if it returns true.
• The method must be public and read-only (query).

Tip: Keep your list up to date and avoid making it too large for performance reasons.