It's possible to get your price equation via their API:
As well as the price at which each of the trades are locked in at:
It should be possible to write a script to scrape this data and calculate the btc_in_usd value using this.
(I'm sure this information is available ...
It's actually pretty common for new cryptocurrencies to have a "pre-mine" meaning that some part of the future coin issuance is assigned to public keys in advance. Investors pay the development team before the miners start generating blocks at a fixed price (that is not determined by market forces) and provide a public key. Then when the genesis ...