offline pc/phone - air-gapped - copy generator file to device first.
Discussion
oneway to do ->
nvm use v16.19.1
npm install ecpair bip32
npm install bitcoinjs-lib
git clone https://github.com/coinables/segwitaddress.git
cd segwitaddress
php -S 10.10.10.1:8088 &
php -S 127.0.0.1:8081 &
need install nodejs php in win / linux urself first if not exists