Hi all,

A bit new to this bitcoin currency, but already in love with it ^^
If my understanding is correct the security of the network is insured by millions of computers all over the world solving complex mathematical equations.
Those calculations are rewarded by mining. A computer that help securising the network is rewarded this way.

My question is, what will happen after all bitcoins are mined? or when it is no more profitable to keep mining? Who will ensure the security of the network then?

Thank you.