Why does each block generate 0.7 BCNA coins aside from the PoS reward and the Masternode reward?

These coins are generated and flow towards the community fund. Eventually the community of Masternodes is able to vote on budget proposals and dictate fund allocation.

Primarily, the proposals will be themed among efforts to increase the number of users of the BitCanna network. E.g. the coins generated into the community fund can be used to incentivize users on the platform. At a later stage, provided that we have sufficient volume for the BCNA coin, the budget can be used to fund proposals surrounding strategy and development that benefit all the community’s stakeholders.