1 CRSALE token is equivalent to 1 BTC worth of CRYPTI plus the bonus which will be determined in the following way...
In order to encourage people not to wait until the last day to invest, an investment structure rewarding early adopters will be used. A bonus of 30% increase in stake will be awarded at the beginning of the pre-sale. The bonus will be applied to the total resulting amount of coins, which will be 75% plus any additional ones from the 10%. This will be continuously reduced by 1% each day over the course of the sale to a final 0% bonus at the end of the sale.
TB = Total amount of BTC collected via Bter and Maxmint plus bonus credits
TC = Total amount of Crypti distributed to buyers
D = Day of purchase
B = Amount of Bitcoins sent by a buyer
C = Amount of Crypti a buyer receives
F = Fraction of the buyer stake in total Crypti distributed
F = B * (1+ (30 - D) / 100 ) / TB
TC = 75,000,000 + 20,000 * TB, maximum 85,000,000 for TB equal to or more than 500 BTC
C = TC * F = (75,000,000 + 20,000 * TB) * (B * (1+(30 - D) / 100) / TB)
https://github.com/crypti/crypti-docs/blob/master/presale.md
Thanks again for your time