Pay to Public Key Hash contract.

P2PKH scripts are used to lock Bitcoin to an address. The Bitcoin can later be unlocked using the private key corresponding to the address.

Lock parameters

• :address - A BSV.Address.t/0 struct.

Unlock parameters

• :keypair - A BSV.KeyPair.t/0 struct.

Examples

iex> contract = P2PKH.lock(1000, %{address: Address.from_pubkey(@keypair.pubkey)})
iex> Contract.to_script(contract)
%Script{chunks: [
  :OP_DUP,
  :OP_HASH160,
  <<83, 143, 209, 121, 200, 190, 15, 40, 156, 115, 14, 51, 181, 246, 163, 84, 27, 233, 102, 143>>,
  :OP_EQUALVERIFY,
  :OP_CHECKSIG
]}

iex> contract = P2PKH.unlock(%UTXO{}, %{keypair: @keypair})
iex> Contract.to_script(contract)
%Script{chunks: [
  <<0::568>>, # signatures are zero'd out until the transaction context is attached
  <<3, 248, 31, 140, 139, 144, 245, 236, 6, 238, 66, 69, 234, 177, 102, 232, 175, 144, 63, 199, 58, 109, 215, 54, 54, 104, 126, 240, 39, 135, 10, 190, 57>>
]}