LaurentMT

1/ About the nature of Payjoin Transactions and Deception Tools

I'm used to describe Payjoin Transactions as Steganographic Transactions but they can also be described more generally as "Deception Tools" (https://medium.com/@laurentmt/hi-ilya-e72ddda60b35).

In my humble opinion, the use of deception tools is a legit and effective strategy for improving on-chain privacy but it's important to keep in mind that the deception game has its own rules and these rules are very different from others approaches (like "privacy backed by maths" tools).

An important principle of this deception game is that it must introduces and preserves some kind of morphism between interpretations. It should be absolutely impossible for an analyst to distinguish between one form and the other.

For instance, we have: