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This might seem petty, but I noticed that the following characters do not exist inside of public keys and are not allowed to be used when performing solana-keygen grind. I'm interested in what the background story is behind that, technical or otherwise.

Not allowed characters: OIl0

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This has been adopted mainly due to ambiguity of some of the characters. Copying from the source code of Bitcoin:

Why base-58 instead of standard base-64 encoding?

  • Don't want 0OIl characters that look the same in some fonts and could be used to create visually identical looking data.
  • A string with non-alphanumeric characters is not as easily accepted as input.
  • E-mail usually won't line-break if there's no punctuation to break at.
  • Double-clicking selects the whole string as one word if it's all alphanumeric.
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