how does dash privacy compare to that of the Elixxir platform?
The Elixxir platform will allow users to communicate without revealing metadata related to their activitiesthat is, Elixxir will obscure who sends messages, when messages are sent, where they are sent from and who receives them. Transaction data is not stored on the blockchain, and transactions are not linked to users or to other transactions. Therefore, only senders and receivers can review and prove payment history. Communications are end-to-end encrypted, and can only be read by the intended recipients. As a result, the identity of communicating parties and their devices remains private.
Dash PrivateSend is a trustless method of running a sequence of transactions (known as mixing) such that an external observer is unable to determine the source of funding when a PrivateSend transaction is created. This gives your Dash the same anonymous properties as cash withdrawn from an ATM, for example. The mixing and denomination process is seamless, automatic, and requires no intervention on the part of the user. The current implementation of PrivateSend in the Dash Core wallet allows any amount of Dash to be mixed for later use in PrivateSend transactions.
Dash PrivateSend is advantageous in that all data is still stored on the blockchain for users to verify, but significantly obfuscated to hide its spending story.