Hidden fee (about 15% of sum) while send #27120

1. 
   mistercx commented at 5:02 pm on February 17, 2023: none

   Hello,

   My wallet is 3KxxEaECid1H1h5Ya2XnjsxLx8fK6TToQj - 18 transactions total.

   I sent 0.1BTC, but in blockchain I found 2 transactions: my own (0.1BTC) + unknown fee (0.01999241BTC) - 20% of sum! TXID: 70a951a496a809597b79753be7b4f05a7b13ece1d09d8d0ae643b0190ace1fba

   Next I sent 0.1BTC, but in blockchain I found 2 transactions: my own (0.1BTC) + unknown fee (0.00997949BTC) - 10% of sum! TXID: 60488ac88ed0390cb24b4659aa2256c5eacf4dee102749cd828ea18c293ea090

   I do not understand how this could happen. In Bitcoin Core I see ONLY my transactions, but blockchain show me more 2 transactions to unknown wallets (bc1qg3ds029ydsum9pgldpfhmcp94sncrvhqzltp5q, 3Be8ZPdgUqxXbagjJ5imvG7nYZzgLxaHHR)

   So, total balance in blockchain is less then in Bitcoin Core on this amount (0.02997189BTC) Bitcoin Core show me 1.38994437 BTC, but blockchain show me 1.35997247BTC (minus two fees above)

   What is my really balance? What are these hidden payments? Tell me more about it, please. What can I do to solve this problems in future? Screens from my Bitcoin Core is attached below. Thanks!

   Expected behavior

   Actual behavior

   To reproduce

   System information

   Bitcoin Core version v0.18.0 (64-bit) - from official site.

   Linux blockchain 4.15.0-48-generic #51-Ubuntu SMP Wed Apr 3 08:28:49 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

   

2. mistercx added the label Bug on Feb 17, 2023
3. 
   hebasto commented at 5:12 pm on February 17, 2023: member

   Are those “hidden payments” your own change?
4. hebasto removed the label Bug on Feb 17, 2023
5. hebasto added the label Questions and Help on Feb 17, 2023
6. 
   willcl-ark commented at 5:14 pm on February 17, 2023: contributor

   Yes, Bitcoin Core will use a new address to send the change to. If you add up the amounts on the other addresses, you will reach the Bitcoin Core balance:

   1.35997247 + 0.0199924 + 0.00997949 = 1.38994436

7. 
   mistercx commented at 9:35 pm on February 17, 2023: none

   Thanks for your help. I read about UTXO-model, so wallets with sum 0.0199924 and 0.00997949 is my addresses too, but for changes? I will be very grateful if you explain to me: how did these changes formed? From what amount? On my specific example, if possible. I do not understand the algorithm of this process for now.
8. 
   sipa commented at 9:42 pm on February 17, 2023: member

   Questions about how Bitcoin works are off-topic here, but you can find resource in other places. For example see https://bitcoin.stackexchange.com/a/738/208 about how change works.
9. sipa closed this on Feb 17, 2023

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10. 
    mistercx commented at 10:09 pm on February 17, 2023: none

    Thanks to all! The main meaning is here:

    Because the client manages coins in a particular way, it doesn't make sense to try to view coins it is managing with any kind of explorer. It's specifically trying to obscure the fact that all the coins are related. Those kinds of services are intended to monitor recieved funds, not managed funds.

11. 
    Mijay36089 commented at 10:59 pm on February 22, 2023: none

    Where did you send it to what wallet ?
12. bitcoin locked this on Feb 22, 2024

Contributors
mistercx hebasto willcl-ark sipa Mijay36089

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Questions and Help