Bitcoin Forum

del

myself & someone else just tried to send me a coin to that address & it flagged up red as invalid, it's one from my blockchain.info wallet, but when I just tried now from Gox the tx worked fine - anyone know whats going on here, thanks

https://blockchain.info/tx-index/5898969/41ddf20f523c8b23d1519bd583c76813037a0ac46116f84360042f12add66f91

This is one of the addresses I am unable to send to.  I initially thought the problem was on my end but now I dont know...

https://bitcointalk.org/index.php?topic=81917.0

When I copy and paste the address from you post it has a space (or other invalid character in it)

1G5apmPvo2iTtmkNWAHTCET7 Y842Ufijs8

1G5apmPvo2iTtmkNWAHTCET7Y842Ufijs8 is valid.

I just tried that C&P from myself's post & it worked fine from Gox - I see no space or anything like in your example

Maybe Gox is striping the character.

If I double click to select the address in myself's post only part of the address is selected e.g.

https://i.imgur.com/HJttL.png

But If I double click the address in your sig the whole address is selected. Somewhere along the lines an invalid character got inserted.

This solved the issue for me.  I was able to send coins using the address you removed the illegal char from.  Thanks!

weird, when I double click it it all gets selected & works fine

I'm using a Mac with Firefox & have no problems like this at all, if that helps finding what's going on here

I have seen this happen if you post an address on Facebook.  Facebook inserts a non-printing character in words above a certain length so browsers break them rather than widen columns.  That non-printing character can be copied and pasted and will make a perfectly normal-looking address get rejected.

The most sensible remedy is for input dialogs expecting a Bitcoin address to strip these out.

Short of that, just retype the address by hand without copy and paste.

Are you on a pc? I am on a mac, and when I double click same thing happens, stops where shown above. but when I do it again entire string gets highlighted. 

If you look at the html source (use 'view'->'source' in Explorer) of your post you will see:

1G5apmPvo2iTtmkNWAHTCET7​Y842Ufijs8

Where you pasted your address.  The '​' is not a printable ASCII character.  Your browser chose to show nothing in that place.  But if you copy that string those invalid characters are there.

Sam

Input validation for the win.  No seriously a good idea.  One I will tuck away (and likely forget until something stops working. :) ).

Zero-width space.  Like Casascius says, probably injected so it will help when a line break / wrap is needed.
 - http://stackoverflow.com/questions/2973698/whats-html-character-code-8203

Using Vv0.6.2 of the client it wouldn't even let me paste that address in the PayTo:

I've opened an issue for this:
 - https://github.com/bitcoin/bitcoin/issues/1325

short term workaround; copy paste the address to notepad and from notepad to wherever you want. That will also remove nonprintable characters. I use it often to copy paste HTML tables to OO Calc and get rid of the HTML markup.