problema de novato

[wothan]

I could be the most normal, but I still do not understand, it happens that I am just starting in the world of cryptocurrencies and I invested a not very high amount in them, for that I bought bitcoins in a page that allowed me to buy with local currency, everything well that I transferred to the wallet (electrum) since I realized that I was transferred a part less than the total amount, when reviewing the transaction I realized that it was separated in 2 one that came to my wallet and another went to another part (which is the one that has the most money), also said address starts with 3 and not with 1 as are the normal bit addresses, besides this output was labeled as not spent, even though I do not figure in nowhere.

transaction number 1b69c174f6d2e151ed984c30e0ecb75f23a027c38f7c34cf201dbdd893ead93d

please help,

[HCP]

Seems like a normal transaction. I assume you purchased around US$13 worth of Bitcoin... the site you bough from, transferred your 0.0018879 BTC to what I am assuming is your address: 1M1ZRPDhaSsPDfTr8JPvUBPFdBzWRw2Lu8

The other value that was sent to the "3" address, is what is known as "change". You can read about it here: https://en.bitcoin.it/wiki/Change
You can read why change gets created here: https://en.bitcoin.it/wiki/Coin_analogy

Bitcoin does not work like typical money in a bank... you don't have a balance that you can spend exact amounts from. You have a collection of "coins" all of varying sizes... if they amount you want to send is not exactly the same as a coin you have you'll end up with change.

The transaction output being labelled as "unspent" just means that that particular coin has not been used in a transaction yet. You can see that the output is now "spent" because the output has been used in a subsequent transaction.