Enigma

I start with BC, but I’m not a country.
Then comes 1, the guardian of the entrance.
I have a long sequence of letters and numbers,
and I begin with P, a sign of a hidden root.
I’m not a password, but I can receive Bitcoin.
Who am I?

Hint: my home is the blockchain, and my type starts with bc1p.
🤷‍♂️🤷‍♂️🤷‍♂️#bitcoin