This is not gain at all. At least in theory: You own some tons of gold at the start of the process, you have the same tons of gold at the end of the process.
The only real gain is that you have gold in the US custody and the US can be tempted to just use it without telling you anything.
In other words, you had "paper gold" or "virtual gold" that the US can confiscate anytime, for example after invading Greenland, blackmailing France to do nothing.
The only real gain is that you have gold in the US custody and the US can be tempted to just use it without telling you anything.
In other words, you had "paper gold" or "virtual gold" that the US can confiscate anytime, for example after invading Greenland, blackmailing France to do nothing.
You gain custody of what is yours.