We are the church :)
No, unfortunately, the Protestants are not, as a community of faith, part of the Church, -- if they were, Luther's work to separate himself from the Church would have been in vain. Individual Protestants are, of course, mystically, and insofar as they are not in rebellion of mind, members of the catholic Church on which they rely for their salvation. But the Revelation subsists in the two apostolic Churches, Catholic and Orthodox, and they together are source of the interpretation of the Scripture. The insights individual Protestant communities may have into the Scripture are private interpretations.