[Cryptography] A simpler group communication scheme...

[John Tromp]

> Preventing blockchain analysis is a hard problem, and any solution (Monaro, Mimblewimble) greatly worsens the scaling problems, which problems are
> already biting hard.

Monero worsens scalability, but Mimblewimble improves it, since all
spent outputs can be forgotten. An Initial Block Download only needs a
small ~100 byte transaction kernel for each transaction.

Also see https://forum.grin.mw/t/scalability-vs-privacy-chart

regards,
-John