USBI Formula

usbi_entitlement = floor(total_xp / 10,000)

total_usbi_available = 1,000 + usbi_entitlement

claimable_usbi = total_usbi_available - already_claimed_usbi

max_xp                 = 1,000,000,000
max_usbi_entitlement   = 100,000
welcome_grant          = 1,000
max_total_usbi_per_user = 101,000

const WELCOME_GRANT = 1_000;
const RATIO = 10_000;
const MAX_ENTITLEMENT = 100_000;

function usbiEntitlement(totalXp) {
  return Math.min(Math.floor(totalXp / RATIO), MAX_ENTITLEMENT);
}

function claimableUsbi(totalXp, alreadyClaimed) {
  const entitlement = usbiEntitlement(totalXp);
  return WELCOME_GRANT + entitlement - alreadyClaimed;
}