I am working currently on a wallet for a customer
the wallet will be provided to his website users and will hole cryptocurrency
once of the coins he wants supported is BTC
when I researched I didn't find much docs and as i can see BTC network is way different from ETH
Now my question for exemple on ETH i can hold my addresses and private keys on one server and send transations using my ETH full node ,the ETH full node has no access to my peivate keys
on BTC I only see solutions where the BTC node stores all the wallets and that's not suitable for me, I wanna keep wallets private keys on a server and only send transactions when i need to using the btc node
can anyone point me to a direction ? what should I use ?