at the heart of bitcoin lies the principle of blockade

course purse blockchain.info

Bitcoin was launched in 2009 and became the first decentralized digital currency. Since he does not have a central issuer (the one who issues money), Bitcoin exists only in a distributed computer network.

It's a pity that I did it late, it was possible much earlier.

First of all, it will help the population of the whole planet to pay in stores with a single currency and make transfers very quickly. 

if you really need to sell, why not?

I think that everything begins with a crypto currency

I would like to believe it!

And how often do you go and look at the cost of bitcoin?