How to use the blockcypher.get_address_details function in blockcypher

def test_get_address_details_before(self):
        address_details = get_address_details(
                address='1HLoD9E4SDFFPDiYfNYnkBLQ85Y51J3Zb1',
                coin_symbol='btc',
                txn_limit=None,
                api_key=BC_API_KEY,
                show_confidence=False,  # don't return confidence info
                # This way the test result never changes:
                before_bh=4,
                )

        # first TX
        assert len(address_details['txrefs']) == 1
        assert address_details['txrefs'][0]['tx_hash'] == '9b0fc92260312ce44e74ef369f5c66bbb85848f2eddd5a7a1cde251e54ccfdd5'
        assert address_details['txrefs'][0]['block_height'] == 2
        assert address_details['txrefs'][0]['confirmed'] is not None
        assert address_details['txrefs'][0]['tx_input_n'] == -1
        assert address_details['txrefs'][0]['tx_output_n'] == 0

def test_fetching_unspents(self):
        # This address I previously sent funds to but threw out the private key
        address_details = get_address_details(
                address='C3B3dU12vpCVh2jfmGFdqLe5KWxtZfXW8j',
                coin_symbol='bcy',
                txn_limit=None,
                api_key=BC_API_KEY,
                unspent_only=True,
                show_confidence=False,  # don't return confidence info
                # This way the test result never changes:
                before_bh=592822,
                include_script=True,
                )
        assert len(address_details['txrefs']) == 1
        assert address_details['txrefs'][0]['tx_hash'] == 'b12c4b0ab466c9bbd05da88b3be1a13229c85a6edd2869e01e6a557c8a5cca2b'
        assert address_details['txrefs'][0]['block_height'] == 592821
        assert address_details['txrefs'][0]['tx_input_n'] == -1
        assert address_details['txrefs'][0]['tx_output_n'] == 0
        assert address_details['txrefs'][0]['value'] == 1000000

def test_get_address_details_after(self):
        address_details = get_address_details(
                address='1HLoD9E4SDFFPDiYfNYnkBLQ85Y51J3Zb1',
                coin_symbol='btc',
                api_key=BC_API_KEY,
                show_confidence=False,  # don't return confidence info
                # Exclude first result
                after_bh=4,
                txn_limit=1,
                )

        assert len(address_details['txrefs']) == 1
        assert address_details['txrefs'][0]['tx_hash'] != '9b0fc92260312ce44e74ef369f5c66bbb85848f2eddd5a7a1cde251e54ccfdd5'
        assert address_details['txrefs'][0]['block_height'] != 2

def get_balance_from_blockcypher(address):
    """ Check if BTC key being used has enough balance on unspents
    """
    data = get_address_details(address, api_key=BLOCKCYPHER_TOKEN)

    if 'final_balance' not in data:
        return None

    btc_amount = satoshis_to_btc(data['final_balance'])
    btc_amount = float(btc_amount)

    return btc_amount

def dontuseAddress(address):
    """ Check if an address should not be used because of:
        a) it has unconfirmed TX
        b) it has more than maximum registered names (blockstack-server restriction)
    """

    if UTXO_PROVIDER == 'blockcypher':
        try:
            data = get_address_details(address)
        except:
            return True

        try:
            unconfirmed_n_tx = data['unconfirmed_n_tx']
        except:
            return True

        if int(unconfirmed_n_tx) == 0:
            return False
        else:
            return True
    else:
        try:
            unspents = get_utxos(address)
        except Exception as e: