Altcoin or alto - all crypto-currencies are called, except for Bitcoin. It is the first, unique and unique, other crypto-currencies are considered alternative, for which they received such a name.
The first altcoyins appeared in 2011. The goal is to overcome all the technical limitations that bitcoin has. After all, at that time there were no attempts to hype on the topic of crypto-currency. Coins were created for a specific purpose.
By the way, it is Litecoin @ LTC is the most successful and recognizable altcoyinom of the old guard.
what is your opinion?