python: ningún módulo llamado ‘bitcoin’ en Ubuntu usando WSL en Windows 10

¿Qué versión de Python debo usar? al correr pip3 install python-bitcoinlib Obtengo ‘Requisito ya satisfecho’. Ejecuto Ubuntu usando WSL en Windows 10. Tengo este error:

>>> from bitcoin.rpc import RawProxy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\Rony\AppData\Local\Programs\Python\Python37\lib\site-packages\bitcoin\rpc.py", line 48, in <module>
    from bitcoin.wallet import CBitcoinAddress, CBitcoinSecret
  File "C:\Users\Rony\AppData\Local\Programs\Python\Python37\lib\site-packages\bitcoin\wallet.py", line 33, in <module>
    import bitcoin.core.key
  File "C:\Users\Rony\AppData\Local\Programs\Python\Python37\lib\site-packages\bitcoin\core\key.py", line 34, in <module
>
  _ssl = ctypes.cdll.LoadLibrary(ctypes.util.find_library('ssl') or 'libeay32')
  File "C:\Users\Rony\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 442, in LoadLibrary
    return self._dlltype(name)
  File "C:\Users\Rony\AppData\Local\Programs\Python\Python37\lib\ctypes\__init__.py", line 364, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] The specified module could not be found