Maxwell invented CoinJoin so he does actually know exactly what he's talking about when it comes to Dash's (lack of) privacy.
Maxwell can "LoL" at Dash all he likes, but Dash is solving the "right" problem (monetary fungibility) while he's solving the wrong one (encrypted messaging).
The privacy solutions he presents all belong in the domain of payment systems, not stores of value. As such they are incomplete and work by exception to the core blockchain protocol.
For example...
What is a sidechain ?
From a cryptographic point of view, it's an interesting concept - turn a bitcoin into basically any type of alt-coin you want. But from a monetary point of view, what are you doing ? You are doing
reverse fungibility, turning the entire coin supply into a kind of chameleon-like asset that has no static properties and where one part of the coin supply is
distinct form another instead of
indistinct.
What is mechanical pegging ?From a cryptographical point of view it's an interesting concept - save noobs from "dangerous" pump & dump alts and allow them to hold interesting experimental tokens risk-free, mollycoddled by the safety of the mothership. But from an economic point of view, what are you doing ? Creating an extremely nasty economic coupling between markets that transmits volatility from where it does belong to where it doesn't. (See Bretton Woods for previous and Euro for current failed precedents).
What is "Cryptographic Transaction Privacy" ?From a cryptographical point of view it's an interesting concept - allow transactions to take place in private, obscured from the view of onlookers. But from a systems analysis point of view, what are you doing ? Confusing the priorities of a trading platform with those of an electronic asset (which happen to be in conflict and which is why Dash avoided "Cryptographic Transaction Privacy" in the first place in order to support the priorities of compatibility with the Bitcoin ecosystem, supply fungibility, blockchain transparency and optimal economic store of value).
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2F0rGpVDX.png&t=663&c=sNBE7qmEb-RqEg)
What is "Standard" ?From a technology point of view, it's a desirable concept - a reference framework to which everyone conforms in order to facilitate universal interoperability. Greg Maxwell sees electronic assets as if they were some kind of RFC where's there's no point in "not conforming". (He's on record both in print and video with this explicit opinion). But from an asset portfolio point of view, what does that represent ? The exact
opposite of best practice investment philosophy where
diversity, not conformity is optimal.
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FAxJdprS.png&t=663&c=-poYj3qIFtO1QA)