def METHOD_NAME(self):
    coin = coins.by_name(self.tx.coin_name)
    sig_hasher = BitcoinSigHasher()
    sig_hasher.add_input(self.inp1, b"")
    prevouts_hash = get_tx_hash(sig_hasher.h_prevouts, double=coin.sign_hash_double)
    self.assertEqual(hexlify(prevouts_hash), b'b0287b4a252ac05af83d2dcef00ba313af78a3e9c329afa216eb3aa2a7b4613a')