Many banks use blockchain technologies, but for the world bank to accept bitcoins, of course, we can still dream about this, but so of course, on the one hand, then more people would trust bitcoin, but on the other hand, I do not think that it would be good, because then it would be possible to track. Bitcoin usage is the blockchian tech; what is left in world bank adoption or acceptance, in my opinion, is the Bitcoin market volitility which I think may be handled