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block_keys

0.1.0
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This package generates Hierarchical Deterministic blockchain wallets for multiple currencies.

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block_keys lib block_keys bitcoin address.ex
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lib/block_keys/bitcoin/address.ex 

defmodule BlockKeys.Bitcoin.Address do

  @moduledoc """

  Converts a public extended key into a Bitcoin Address

  """



  alias BlockKeys.{Crypto, Encoding}



  def from_xpub(xpub) do

    xpub

    |> maybe_decode()

    |> Crypto.hash160()

    |> Encoding.base58_encode(<<0>>)

  end



  defp maybe_decode(<<"xpub", _rest::binary>> = encoded_key) do

    encoded_key

    |> Encoding.decode_extended_key()

    |> Map.fetch!(:key)

  end



  defp maybe_decode(key), do: key

end