Bitcoin Forum

according to sources in circulation turns bitcoin is limited only 21 million pieces Bitcoin, is that correct?

yes it is called Controlled supply. https://en.bitcoin.it/wiki/Controlled_supply

https://en.bitcoin.it/w/images/en/4/42/Controlled_supply-supply_over_block_height.png

Yes, I understand. I think the source of this money comes from the device Satoshi Nakamoto?

Limitation is always benefial to all of us. Because if you are not going to put some limitations on the things people might surely abuse those i guess that was halving for if im right to cut the supply in half?

Yes, 21 million, but anyone knows why Satoshi Nakamoto set 21 million as total supply? Any hint?

as far as i know he never explained why, but the 21 million is more of an product of the starting reward, that is then halving every 4 years or 210000 blocks until you basically are at zero reward. so it depends more on the variables which he never explained why he choose them like there are.

No, there is no "device Satoshi Nakamoto". The coins are created on a protocol level as a reward for the miners securing the chain.
You can find more on StackExchange (http://bitcoin.stackexchange.com/questions/182/where-do-bitcoins-come-from-and-what-gives-them-their-value).

There doesn't need to be an explanation for something that may very well be an arbitrary number as long as the limit remains fixated.