Thanks for this detail. I’m trying to stretch my understanding and hope you can help me by confirming the following: I’ve ordered a Ledger Nano X and I’ll be backing up my seed phrase in two or three locations. If Ledger (my special pen of choice) goes out of business and, subsequent to that, say, 15 years from now, I want to convert my btc to fiat, can I just use a special HD pen from a different manufacturer, as long as it’s fully compatible with the coins at issue (btc), my computer’s operating system (Apple), etc.? In other words, I should be able to find a special HD pen through which I can fully access my btc and it won’t be trapped in some tragic way just because Ledger dissolved. Is my thinking correct?