You can achieve this in three steps.
Step 1 (Days 01- 30)
Hidrogen to Deuterium
(a) Get 50 direct referrrals
(b) Get 50 Rented referrals
(c) Refer the above image
Step 2 (Days 31-60)
Deuterium to Tritium
(a) Get 100 direct referrrals
(b) Get 100 Rented referrals
(c) Refer the above image
Step 3 (Days 61-90)
(a) Get 500 direct referrrals
(b) Get 500 Rented referrals
(c) Refer the above image
Method:
1. Join the site
2. Upgrade you account.
3. Rent as many referrals as possible.
4. Surf 15 PTC sites every day.
It is that simple.