All good, but is there a possibility you being payed in crypto more than once? Because that's when things get interesting. And if that, by chance happens, is the BTC pay locked to a FIAT curency (20 dollars in BTC what ever the price of BTC is), or is it agreed upon only as BTC pay? Those are the things I would like to know (obviously, the firat one is the best option)
It is a lump sum up front for licensing and then ongoing maintenance and development. I said he can recalculate it whenever payment has to be made. It may go up, it may go down. I think it is still going down for a while.