Litecoin was announced in 2011 with the goal of being the 'silver' to bitcoin's 'gold'.
as far as i know this is incorrect.
Charlie Lee forked bitcoin and created LTC to be able to explore additional possibilities, implement his suggestions for bitcoin which were impossible to implement on bitcoin.
the terms gold and silver are what people started after some time to get the "money" involved while trading.
At the time of writing, Litecoin has the highest market cap of any mined cryptocurrency, after bitcoin.
also incorrect.
LTC has the 4th rank regarding market cap
and i don't know what the significance of miner coins are but you can exclude XRP and consider LTC as 3rd.
in any case market cap is a meaningless number if you want to rank coins with it.
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all these list items have been true for as long as LTC has existed and it never went anywhere!
the adoption of it is still very minimal.
with activation of SegWit and lightning network and all the rest of the stuff Coblee is doing i have some hopes for this coin to grow bigger (that is why price is performing well) but i don't expect anything really big out of it. specially not while bitcoin is around and is taking the stage all to itself!
we need to wait and see...