An attempt to organize a team tournament between countries!

Can't you hold the funds yourself?

No, Dima, I can't. I explained why above. Firstly, what trust can there be in me, as a relatively unknown person, especially in an international tournament? Secondly, I'm from Ukraine. Because of this, WebMoney doesn't allow transferring money to Russian accounts, and if I use Qiwi, the commission is also quite high. Therefore, the most optimal option seems to be for the Sponsor (from Russia) to transfer the amount directly to the custodian (preferably from Russia). This will avoid unnecessary complications later. The sponsor seems willing to transfer half the amount immediately and the other half after the tournament is over.