bx hd private

Derive a child HD (BIP32) private key from another HD private key.

$ bx hd-private --help

Usage: bx hd-private [-dh] [--config VALUE] [--index VALUE]              
[HD_PRIVATE_KEY]                                                         

Info: Derive a child HD (BIP32) private key from another HD private key. 

Options (named):

-c [--config]        The path to the configuration settings file.        
-d [--hard]          Signal to create a hardened key.                    
-h [--help]          Get a description and instructions for this command.
-i [--index]         The HD index, defaults to zero.                     

Arguments (positional):

HD_PRIVATE_KEY       The parent HD private key. If not specified the key 
                     is read from STDIN. 

Example 1