Read https://github.com/openwall/john/blob/bl...in2john.py
You'l see:
You can identify the 'salt' (définition of salt here can be challenged) in your hash.
You'l see:
Code:
crypted = 'salt' in json_db['mkey']
...
sys.stdout.write("$bitcoin$%s$%s$%s$%s$%s$2$00$2$00\n" %
(len(cry_master), cry_master, len(cry_salt), cry_salt, cry_rounds))