Is there a way for me to use my current key pair as a parent to generate additional child key pairs that I could use around the internet?

For example, I may want to use a service that allows me to pay sats via LN on-demand to generate an image, or privately download and summarize a YouTube video, and I may not want it tied to my sethforbtc npub. I may want to generate new keys every time I transact or use a new service, but who wants to keep track of hundreds of key pairs? I want them all to roll up to my main key, but maintain my privacy.

#AskNostr