Bitcoin Forum
April 20, 2018, 01:30:09 AM *
News: Latest stable version of Bitcoin Core: 0.16.0  [Torrent]. (New!)
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: confirmations on change address  (Read 628 times)
flower1024
Legendary
*
Offline Offline

Activity: 1302
Merit: 1000


Secure, scalable blockchain that actually works


View Profile
September 11, 2012, 07:57:25 AM
 #1

hi,

just a small question:

if i send a transaction the change goes to another address (i am speaking about reference implementation).
why aren't there any confirmations needed? it seems to be a normal transaction.

what would happen if i use a wallet (e.g. blockchain.info) and use another partys address as a change address. would he need to wait for confirmations (i guess yes, because i dont see a way to distinguish between change and "real" transaction?

|
               ▄
            ▄█████▄
         ▄███████████▄
      ▄████████▀████████▄
   ▄█████████▀   ▀█████████▄
 █████████▀    ▄    ▀████████
▐██████▀    ▄█████▄    ▀██████▌
▐████▌   ▐███████████▄   ▐████▌
▐██████▄    ▀▀   ███████▄█████▌
▐█████████▄     ██████████████▌
▐█████████▄  ▄   ▀▀   ████████▌
▐███████████████▄    █████████▌
▐████ ▀████████▄  ▄    ▀██████▌
▐████    ▀███████████▌   ▐████▌
▐██████▄    ▀█████▀    ▄██████▌
 █████████▄    ▀    ▄█████████
   ▀█████████▄   ▄█████████▀
      ▀████████▄████████▀
         ▀███████████▀
            ▀█████▀
               ▀
  
>_FOR


    ███▄▄▄▄▄▄▄▄▄▄▄▄▄         ██
    ███            █
             ██    █             █████
 █████             █▀▀▀▀▀▀▀▀▀▀▀▀▀█████
 █████▀▀▀▀▀▀▀▀▀▀█  █             █████
 █████          █  █      ██
       ██       █  █
 ██             █  █           ███
            ██  █  █      █▀▀▀▀███
   █████        █  █      █
   █████▀▀▀▀▀▀▀▀▀▀▀▀▀█▀▀▀▀▀
   █████             █
         ██          █   ██          █████
                ██   █      ▄▄▄▄▄▄▄▄▄█████
        ███▄▄▄▄▄▄▄▄▄▄█▄▄▄▄▄▄█        █████
        ███
                  ██      ▀
 

█▄▄              █▄▄
█████▄▄         ██████▄▄
████████       ████████ █
████████ ██   ████████ ██
████████ ███ ████████ ███
████████ ████ ██████ ████
████████ █████ ████ █████
████████ ▀█████ ██ ██████
████████    ▀▀██  ███████
▀███████         ▀███████
   ▀▀███            ▀▀███
       ▀                ▀
 

                   ▄▄████
              ▄▄████████▌
         ▄▄█████████▀███
    ▄▄██████████▀▀ ▄███▌
▄████████████▀▀  ▄█████
▀▀▀███████▀   ▄███████▌
      ██    ▄█████████
       █  ▄██████████▌
       █  ███████████
       █ ██▀ ▀██████▌
       ██▀     ▀████
                 ▀█▌
 

             ▄████▄▄   ▄
█▄          ██████████▀▄
███        ███████████▀
▐████▄     ██████████▌
▄▄██████▄▄▄▄█████████▌
▀████████████████████
  ▀█████████████████
  ▄▄███████████████
   ▀█████████████▀
    ▄▄█████████▀
▀▀██████████▀
    ▀▀▀▀▀
|
Report to moderator
1524187809
Hero Member
*
Offline Offline

Posts: 1524187809

View Profile Personal Message (Offline)

Ignore
1524187809
Reply with quote  #2

1524187809
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1524187809
Hero Member
*
Offline Offline

Posts: 1524187809

View Profile Personal Message (Offline)

Ignore
1524187809
Reply with quote  #2

1524187809
Report to moderator
1524187809
Hero Member
*
Offline Offline

Posts: 1524187809

View Profile Personal Message (Offline)

Ignore
1524187809
Reply with quote  #2

1524187809
Report to moderator
Revalin
Hero Member
*****
Offline Offline

Activity: 728
Merit: 500


165YUuQUWhBz3d27iXKxRiazQnjEtJNG9g


View Profile
September 11, 2012, 08:38:06 AM
 #2

Waiting for confirmations isn't a network requirement.  It's just a trust issue.

You can automatically trust your own change.  You're not going to double-spend attack yourself, so there's no need to wait.

The "change" has no technical difference from the "payment".  It's just two outputs.  For example, consider these two transactions:

Address A has 1 BTC
You pay 0.75 BTC to B
You receive 0.25 BTC change to C

Address A has 1 BTC
You pay 0.75 BTC to B and 0.25 BTC to C
There is no change left over

The only difference is in the first, address C was automatically generated by your client; in the second, you entered it manually.  From a network and blockchain perspective these two transactions are identical, bit for bit.

      War is God's way of teaching Americans geography.  --Ambrose Bierce
Bitcoin is the Devil's way of teaching geeks economics.  --Revalin 165YUuQUWhBz3d27iXKxRiazQnjEtJNG9g
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!