As of today, 80% of all Bitcoins that will ever exist have been mined. The next halving is a little over two years away, at which point inflation will fall to 2%. This means central banks can only get at most 20% of BTC supply. Unless you sell it to them for their fiat altcoin.

As of today, 80% of all Bitcoins that will ever exist have been mined. The next halving is a little over two years away, at which point inflation will fall to 2%. This means central banks can only get at most 20% of BTC supply. Unless you sell it to them for their fiat altcoin. submitted by /u/wallyjo3
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Why transactions that include itself on the outputs exist?

I often notice transactions such as:

https://blockchain.info/tx/364efe5a906de5971e242f9711008e58a5ab79f136a8044b66615e8662d35f09

Where 3PU shares 1.38 BTC with itself (1.35 BTC) and 37Ek (0.027BTC):

3PUui (1.38 BTC) -> 37Ekc (0.0278 BTC)                  -> 3Puui (1.3519 BTC) 

I am wondering why the transaction doesn’t look like:

3PUui (0.0279 BTC) -> 37Ekc (0.0278 BTC) 

I read from this question that an input must be completely consumed in the transaction, so if I have received 1.35 BTC during the last transaction, If I refer to it, I must consume the 1.35 BTC.

However on https://coinb.in/#newTransaction I can see the amount can be specified for each input. So why should I need to mention the input amount if it is already set by the previous transaction?

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