At this point I believe that BT is just one of a thousand HYIPs out there.  However, I must disagree with this particular statement.  Most BTC companies require the ability to generate new random addresses on the fly for deposits, and what not, as well as a wide range of other functions that are accomplished using API commands directed at full node.  The full node does all the heavy lifting, and their software just shoots off commands and receives responses.  There may be public nodes, that are accessible, out there, but I am not aware of any.  Most companies choose to keep their business critical node, internally, to control variables like performance, security, etc.

Reference: I develop BTC apps that require full node API access for heavy lifting regarding customer deposits and balances.