Conspicuously missing from the entire libra story is how they are actually going to manage the peg. How will they handle the custodian counter-party risk? What I mean by that is: for libra to actually be a stablecoin, for every libra unit in circulation, FB and their merry band of friends will need to stash a frozen combo of {dollar, euro, yen} somewhere. That "somewhere" is actually not easy at all to design from a…
I've only read the white paper, but finance is one of my biggest hobbies, so I'm going to take a stab at addressing the concerns you mention. It's not entirely a currency peg - it's an asset peg. The assets will be Treasurys, bunds, etc. that are _representative_ of currencies, but are not direct currencies. The peg is going to drift. The history of currency pegs is filled with struggles by institutions to maintain t…
There will be a temptation to speculate on it. And once started, speculation could easily get out of hand. If they want some semblance of stability they’re going to be prepared to actively engage in monetary operations, just like any other currency.