bx hd public

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

$ bx hd-public --help

Usage: bx hd-public [-dh] [--config VALUE] [--index VALUE] [--version    
VALUE] [HD_KEY]                                                          

Info: Derive a child HD (BIP32) public key from another HD public or     
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.                     
-v [--version]       The desired HD public key version, defaults to      
                     76067358. This is used when the HD key is private.  

Arguments (positional):

HD_KEY               The parent HD public or private key. If not         
                     specified the key is read from STDIN. 

Example 1

BIP32 Test Vector 1 Chain m/0H, public derivation

$ bx hd-public -d xpub661MyMwAqRbcFtXgS5sYJABqqG9YLmC4Q1Rdap9gSE8NqtwybGhePY2gZ29ESFjqJoCu1Rupje8YtGqsefD265TMg7usUDFdp6W1EGMcet8

The hard option requires a private key.

Example 2

BIP32 Test Vector 1 Chain m/0H/1, public derivation

$ bx hd-public -i 1 xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw

xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ

Example 3

BIP32 Test Vector 1 Chain m/0H/1/2H, public derivation

$ bx hd-public -d -i 2 xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ

The hard option requires a private key.

Example 4

BIP32 Test Vector 1 Chain m/0H, private derivation

$ bx hd-public -d xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi

xpub68Gmy5EdvgibQVfPdqkBBCHxA5htiqg55crXYuXoQRKfDBFA1WEjWgP6LHhwBZeNK1VTsfTFUHCdrfp1bgwQ9xv5ski8PX9rL2dZXvgGDnw

Example 5

BIP32 Test Vector 1 Chain m/0H/1, private derivation

$ bx hd-public -i 1 xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7

xpub6ASuArnXKPbfEwhqN6e3mwBcDTgzisQN1wXN9BJcM47sSikHjJf3UFHKkNAWbWMiGj7Wf5uMash7SyYq527Hqck2AxYysAA7xmALppuCkwQ

Example 6

BIP32 Test Vector 1 Chain m/0H/1/2H, private derivation

$ bx hd-public -d -i 2 xprv9wTYmMFdV23N2TdNG573QoEsfRrWKQgWeibmLntzniatZvR9BmLnvSxqu53Kw1UmYPxLgboyZQaXwTCg8MSY3H2EU4pWcQDnRnrVA1xe8fs

xpub6D4BDPcP2GT577Vvch3R8wDkScZWzQzMMUm3PWbmWvVJrZwQY4VUNgqFJPMM3No2dFDFGTsxxpG5uJh7n7epu4trkrX7x7DogT5Uv6fcLW5

Example 7

piped commands, private derivation

$ echo [user entropy] | bx hd-new | bx hd-public

091974a96a5bfc5b0d4a5ddb3ed987bf
xprv9s21ZrQH143K4R2ZMbGkj7RB7wvDhi9ciTTvoLz92LBxfhpfuebjpzwYW9DVzainPDChhipGuEpyfV76ntw51v95FNBnEhHAgiLsJ9DaR9m
xpub69jBNd8w5JXfxde1m46b1oHPVdnG4RWS46ZDSP5gVNph7AbDqJzbdRbpYsYwTKAec6YSMMZEZNXLDDtNQcvVaYHgdSuZkCnqCaTM4PxXBZ2

Example 8

piped commands, public derivation

$ echo [user entropy] | bx hd-new | bx hd-to-public | bx hd-public

9d72c9d7e17468d5f789e841cfa11e19
xprv9s21ZrQH143K3dkWG7DPBN7r6QDrTqvszLBBreXR2PKrG7tPJ21JwJ2rHK5ZSXE3SzoSuzZ5twjJPTYhSCTZgjje2Ueg4TJDpXRikxa9mrk
xpub661MyMwAqRbcG7pyN8kPYW4aeS4LsJejMZ6nf2w2airq8vDXqZKZV6ML8a71xfXYNR3ZktB2oF8smPmprPaXuMZ5wStSfcKpUvjorwKugxu
xpub68W9m7AG6qRBkVgU3bxrk6feqT6efmdba7m2S9s4AYyyK4dypNWReP5rrUkwthCV3xLhhx65xnJ7eg7j4CK7jv4mKtNRGeNuXxZSQQh883V

Example 9

--index 1, --version 70617039 (testnet)

$ bx hd-public -i 1 -v 70617039 xprv9uHRZZhk6KAJC1avXpDAp4MDc3sQKNxDiPvvkX8Br5ngLNv1TxvUxt4cV1rGL5hj6KCesnDYUhd7oWgT11eZG7XnxHrnYeSvkzY7d2bhkJ7

tpubDApXh6cD2fZ7WjtgpHd8yrWyYaneiFuRZa7fVjMkgxsmC1QzoXW8cgx9zQFJ81Jx4deRGfRE7yXA9A3STsxXj4CKEZJHYgpMYikkas9DBTP