Settings View Source Public Keys

A public key is derived from a private key. The main difference is that it can't be used to spend funds. It still is able to view balances and create addresses.

creation

Creation

First, a private key is needed...

alias BitcoinLib.Key.{PrivateKey, PublicKey}

private_key = 
  "blue involve cook print twist crystal razor february caution private slim medal"
  |> PrivateKey.from_seed_phrase()

... so that the public key can be derived from it

public_key =
  private_key
  |> PublicKey.from_private_key()

serialization

Serialization

A public key can be serialized into an xpub

public_key
|> PublicKey.serialize!()

which results in

"xpub661MyMwAqRbcGiWUazDmCUZbC8Z7WMcjveWgfU92NAu4kvFcpZ8LGV2Y4bRaT8sBUzihLgiyMqsbb61HKFV1sL185uZs1DE15dpWfrQFqBY"

and can then be imported in an online app to generate a read-only wallet