Can you use non-standard characters to create a bitcoin brain wallet? Ex. Chinese characters, ascii characters using the numberpad with ALT key.

Is there downsides to this?

1 Answer 1


In short words: yes.

But you should know the algorithm how brainwallets are generated. Nobody guarantees that brainwallets on different services are generated with the same algorithm.

  • So would a hash of the following two chinese characters: 中國 have a collision with any of the combinations of all the standard usa keyboard character combinations? Commented Jul 6, 2015 at 17:11
  • I think that brainwallets should convert string to utf-8. Check it yourself
    – amaclin
    Commented Jul 6, 2015 at 18:53
  • how do i check if it converts it to utf-8 ? Commented Jul 6, 2015 at 19:12
  • just tried the following: 台北 is the equivalent of 台北 ... as tested here: pinyin.info/tools/converter/chars2uninumbers.html -- but when used to generate an address via bitaddress its different. Commented Jul 6, 2015 at 19:21
  • This is html-encoding, not utf-8
    – amaclin
    Commented Jul 7, 2015 at 6:28

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