Build your own  hardware wallet 

Series by @StepanSnigirev covering:
&gt;Initial entropy generation
&gt;BIP-39: recovery phrases
&gt;BIP-32: HD Wallets &amp; extended private / public keys
&gt;Addresses: legacy, segwit &amp; nested segwit
&gt;PSBT transactions

https://t.co/bfTbBlxjiT