RegEx to match Bitcoin addresses?

Question

I am trying to come up with a regular expression to match Bitcoin addresses according to these specs:

A Bitcoin address, or simply address, is an iden

Answer 1

I am not into complicated solutions and this regex served the purpose for the most simplest validation, when you just don't want to receive complete nonsense.

\w{25,}

Answer 2

^[13][a-km-zA-HJ-NP-Z1-9]{25,34}$

bitcoin address is

• an identifier of 26-35 alphanumeric characters
• beginning with the number 1 or 3
• random digits
• uppercase
• lowercase letters
• with the exception that the uppercase letter O, uppercase letter I, lowercase letter l, and the number 0 are never used to prevent visual ambiguity.