A PSA to OP about the quality of some members here is already quite a good contribution...I feel I touched a nerve there right?
Nothing will happen. If you are talking about getting a wire transfer of 500,000USD as a lump sum, there are probably a few (you can count them with one hand) countries whose banks will not question you. Almost everywhere they will want to hear some︀ info from you.
Been there, done that.
Talking about Philippines. Since OP is interested in︁ that.
Current AML laws in the country require, by government order (and not because the︂ banks want it) to basically attach a proof of source for incoming transfers over 500,000PHP︃ (or equivalent in USD).
There's no escape from that.
That doesn't mean you can't transfer︄ 100,000USD or 300,000USD. But you need to attach a proof of source to that or︅ the bank will simply refuse the incoming transfer and send back to sender (again, been︆ there, done that)
Now kids, go watch The Man with the Golden Gun, that's my︇ favourite Bond movie and let people with info and real life experience contribute to threads.︈ Take care.