This document describes a multi-level marketing system called CoolFund.io. Members can join for free but must upgrade within 3 hours by paying 0.002 BTC. They then refer 3 people who occupy their first level. If more people are referred, they spill over to the next level. At each level, referrals pay an increasing amount to upgrade like the member did, generating profit. After 4 levels and 81 referrals, members can earn over 12 BTC total. To avoid missing payments, members must upgrade stages quickly as funds are received.