Djed is in fact not a single protocol but an evolving collection of protocols. Their characteristics and differences are summarized in the table below. Because Djed versions do not necessarily evolve linearly and are effectively variations of each other, we use names and letters to refer to them, instead of numbers.
Diminishing protocol treasury fee to incentivize development in a rent-seeking free manner.
Possibility to sell both RCs and SCs simultaneously, as long as the sale does not reduce the reserve ratio, thus giving RC holders more flexibility when the reserve ratio is below the minimum threshold.
The protocol uses two oracles instead of just one (or one oracle that provides two prices). Typically one price can be the latest price and the other price can be a moving average. The four operations (buy/sell SC/RC) use the price that will maximize reserve increase or minimize reserve decrease. This provides more resilience against potential oracle delays or price manipulation attempts.
