user27289: I did not understand the concept of a seed in BIP0032 that well. Would you mind telling me do the keys that are derived from a key tree of Hierarchical Deterministic Wallet (HDW) depend on a root seed? In another words, do the derived keys differ for different root seed values or not?
Thanks in advance
Best Regards

user10377: The short answer is yes.  
A real example is provided below that applies bitcoin-explorer (bx) client on a UNIX command line interface to synthesize a very simple "low entropy" Bitcoin brain wallet seed that is 256 bits in length:
% echo “Hello its me” | bx base16-encode | bx sha256
cc64b0cb02990d2a17ba0f4274df3e38448454da4fb22a9ca8d23944be144e1d
The $seed above feeds the synthesis process of BIP 32 m/0/12d/4 private extended key below:
% echo $seed | bx hd-new | bx hd-private -i 0 | bx hd-private -d -i 12 | bx hd-private -i 4
xprv9yimFehUHrTzsGso7fg1yXqzGgAAbYJxubKbgZWzVYvf2tSNcQvbReku1xEiqmoHhhHzRsedx2a4YVQ5qf4TtkdP5DMV7dqhnK1ihKZA5Cj
Different seeds feeding the "bx hd-new" command will yield different xprv* extended private keys.
The $pvt_ext_key above can be converted into a traditional elliptic curve WIF key  below:
% echo $pvt_ext_key | bx hd-to-wif
KzWMQhXEz1Z8s5s16ArUvUEgUmX6rFahacnaMi8HMEUKFDSQ6Pks
The $pvt_ec_WIF_key above can also be directly converted into a Bitcoin address with below:
% echo $pvt_ext_key | bx hd-to-address
1ATcSQCeuQB8xNvCH7XSksNUs8SHU1dfEe

27289: <p>I did not understand the concept of a seed in <a href="https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki" rel="nofollow">BIP0032</a> that well. Would you mind telling me do the keys that are derived from a key tree of Hierarchical Deterministic Wallet (HDW) depend on a root seed? In another words, do the derived keys differ for different root seed values or not?</p>

<p>Thanks in advance
Best Regards</p>
 10377: <p>The short answer is yes.  </p>

<p>A real example is provided below that applies bitcoin-explorer (bx) client on a UNIX command line interface to synthesize a very simple "low entropy" Bitcoin brain wallet seed that is 256 bits in length:</p>

<p><code>% echo “Hello its me” | bx base16-encode | bx sha256</code>
cc64b0cb02990d2a17ba0f4274df3e38448454da4fb22a9ca8d23944be144e1d</p>

<p>The $seed above feeds the synthesis process of BIP 32 m/0/12d/4 private extended key below:</p>

<p><code>% echo $seed | bx hd-new | bx hd-private -i 0 | bx hd-private -d -i 12 | bx hd-private -i 4</code>
xprv9yimFehUHrTzsGso7fg1yXqzGgAAbYJxubKbgZWzVYvf2tSNcQvbReku1xEiqmoHhhHzRsedx2a4YVQ5qf4TtkdP5DMV7dqhnK1ihKZA5Cj</p>

<p>Different seeds feeding the "bx hd-new" command will yield different xprv* extended private keys.</p>

<p>The $pvt_ext_key above can be converted into a traditional elliptic curve WIF key  below:</p>

<p><code>% echo $pvt_ext_key | bx hd-to-wif</code>
KzWMQhXEz1Z8s5s16ArUvUEgUmX6rFahacnaMi8HMEUKFDSQ6Pks</p>

<p>The $pvt_ec_WIF_key above can also be directly converted into a Bitcoin address with below:</p>

<p><code>% echo $pvt_ext_key | bx hd-to-address</code></p>

<p>1ATcSQCeuQB8xNvCH7XSksNUs8SHU1dfEe</p>
