That's not how math community generally works. Everyone knows what the important idea of a proof is. Publishing the work that grates a new field of mathematics

That's not how math community generally works. Everyone knows what the important idea of a proof is. Publishing the work that grates a new field of mathematics that leads to a proof is not worse than toiling away privately (for longer!). Gregory Perelman, the only Millennium Prize winner, declined the prize because he refused to accept credit for Richard S Hamilton's foundational work.