You have been waiting all your life for this. You don’t have to wait more.
I’ll give you the answer right away.
119 ridges
Ridges are part of a mechanism to prevent counterfeiting and fraud.
Different coins have different number of ridges. Some don’t have ridges.
And this is useless information because it doesn’t apply to steem or bitcoin.
(source)
See you tomorrow for more "Useless information"
RMach
