The amount of "this is fine" is absolutely incredible, Andreas all up on twitter, creating articles, posting videos. Absolutely essential to convince those that don't really understand the implications of what this means that there is nothing to see here.

RBF + Full Blocks makes zero confidence unworkable, because it supplants the first seen rule and *allows* double spends. In Core's view of things this a feature not a bug.

What's interesting about this is that the expected behaviour of RBF would be that the later broadcast tx with the higher fee should be the one that makes it into the chain, but in this case a miner instead followed the first seen rule.

The implication of this is that you *absolutely* must wait for confirmations, which makes BTC essentially useless as Peer-to-Peer digital cash.

Again, in core's view of things this is a feature not a bug.

For anyone keeping up at home, Bitcoin was first and foremost supposed to be digital cash.

A semantic argument about it not being a double spend because one of them was not spent is disingenuous. Real world consequences of this are that a customer spending $20 in a coffee shop is long gone and the merchant has no recourse. Ergo, BTC cannot be used as digital cash.

At least now core has taken down the Whitepaper there is no question that they are building something else. Maybe that thing is a great thing, maybe ya'll can get rich trading it. GLHF