i have found out that bitcoin forked and cryptograffiti uses "bitcoin cash" which seem less popular than "bitcoin". how many miners bitcoin cash has? how much reliable is this? are messages saved there are now going to be provable to be indeed not changed by 51% attack?
why bitcoin developers do not add possibility to add comments to every transaction? why it was not made from beginning? usually, there is such thing in electronic money sites, also in bank sites.