Sending and receiving payments
==============================

Payments in Monero desire a bit of explanation even for people experienced with cryptocurrency.

The main difference from coins which use transparent blockchain is that Monero transactions do not
disclose sender or recipient's address, nor they tell what the amount is. This is a great feature
that makes Monero stand out, however at the same time it causes difficulties. In the outgoing
payments you won't see the recipient address and, in the incoming ones you won't see the sender.

For this reason, there are two classes representing those, ``IncomingPayment`` and
``OutgoingPayment``. They share most attributes from the parent ``Payment`` class but carry only
one address, depending on which end of the payment your wallet is. Your end address is present
in ``local_address`` attribute.

Retrieving payments
-------------------

Each ``Wallet`` and ``Account`` object has two methods which will return the list of incoming or
outgoing payments:

.. code-block:: python

    In [4]: wallet.incoming()
    Out[4]: 
    [in: e9a71c01875bec20812f71d155bfabf42024fde3ec82475562b817dcc8cbf8dc @ 1087530 2.120000000000 id=cb248105ea6a9189,
     in: a0b876ebcf7c1d499712d84cedec836f9d50b608bb22d6cb49fd2feae3ffed14 @ 1087606 1.000000000000 id=0166d8da6c0045c51273dd65d6f63734beb8a84e0545a185b2cfd053fced9f5d,
     in: d29264ad317e8fdb55ea04484c00420430c35be7b3fe6dd663f99aebf41a786c @ 1087858 3.140000000000 id=03f6649304ea4cb2,
     in: f349c6badfa7f6e46666db3996b569a05c6ac4e85417551ec208d96f8a37294a @ 1088400 1.000000000000 id=0000000000000000,
     in: bc8b7ef53552c2d4bce713f513418894d0e2c8dcaf72e681e1d4d5a202f1eb62 @ 1088394 8.000000000000 id=0000000000000000,
     in: 5ef7ead6a041101ed326568fbb59c128403cba46076c3f353cd110d969dac808 @ 1087601 7.000000000000 id=0000000000000000,
     in: cc44568337a186c2e1ccc080b43b4ae9db26a07b7afd7edeed60ce2fc4a6477f @ 1087530 10.000000000000 id=0000000000000000,
     in: 41304bbb514d1abdfdb0704bf70f8d2ec4e753c57aa34b6d0525631d79113b87 @ 1088400 1.000000000000 id=1f2510a597bd634bbd130cf21e63b4ad01f4565faf0d3eb21589f496bf28f7f2,
     in: f34b495cec77822a70f829ec8a5a7f1e727128d62e6b1438e9cb7799654d610e @ 1087601 3.000000000000 id=f75ad90e25d71a12,
     in: 5c3ab739346e9d98d38dc7b8d36a4b7b1e4b6a16276946485a69797dbf887cd8 @ 1087530 10.000000000000 id=f75ad90e25d71a12,
     in: 4ea70add5d0c7db33557551b15cd174972fcfc73bf0f6a6b47b7837564b708d3 @ 1087530 4.000000000000 id=f75ad90e25d71a12]

    In [5]: wallet.outgoing()
    Out[5]: 
    [out: a8829744952facbfdaab21ca193298edb1fa16f688cd5dbcdff3ed3968155f28 @ 1088411 2.220000000000 id=0000000000000000,
     out: e291fe40c6102a6193c82ac33227c08e5b30a863dba1bc63e13043a25abbb97a @ 1088523 0.123000000000 id=0000000000000000,
     out: 40de45db57eb87eb8395baf5c1dc705602938317d043f463e68ed85b7108f9f3 @ 1088184 1.000000000000 id=0000000000000000,
     out: 2b41226d45edb875634694fccd95f3c174daa5062763eee619ed4475a7b9207a @ 1088184 2.450000000000 id=6cc9350927868849,
     out: 5e8f392a42899294e6b679ddac13cfe1dfe7f034b1e347424218af06c3dfdc85 @ 1088394 1.000000000000 id=6cc9350927868849,
     out: 5d15fef66fe8de715bcbf2c181f97b9932f9f843aef4724f3026fa3cd1082c68 @ 1088521 3.333333333330 id=0000000000000000,
     out: edc7c28e7b07486be48dac0a178f25a3505114267ddaf3e62ab00d9a6e996044 @ 1088394 21.000000000000 id=0000000000000000,
     out: e32cccd7522e760b1c8a571fd08c75e7a1d822874380edc9656f58284eeb2fe5 @ 1088441 0.070000000000 id=0000000000000000,
     out: d09666238129a1e2a71a9b7c6b30564a95baef926556bb658785cb9c38d9b25a @ 1088479 0.210000000000 id=0000000000000000,
     out: 551721b5358b02565d6a9862867e3806b9a2e0d5aa5158d4d30940251d27bbdd @ 1088516 1.111111111000 id=0000000000000000,
     out: 21e7eb651e8a2bc7661975e965ac6b30a6f4033c6a02e96320e41139ad3e307c @ 1088438 0.070000000000 id=0000000000000000,
     out: 34833fef78c7b7c15383a78912344ecfb3ace479d27c4bd6f3e3f136ddc1d6a9 @ 1088538 3.141592653589 id=0000000000000000000000000000000079323846264338327950288419716939]

Filtering payments
^^^^^^^^^^^^^^^^^^

Retrieving all payments and processing them each time sounds uncomfortable, especially in old
wallets which have seen a lot of transfers. To make it easier, you may use filtering on payment
queries.

For example, you may ask for payments from a recent period, limiting the blockchain height:

.. code-block:: python

    In [1]: wallet.incoming(min_height=1088000)
    Out[1]: 
    [in: f349c6badfa7f6e46666db3996b569a05c6ac4e85417551ec208d96f8a37294a @ 1088400 1.000000000000 id=0000000000000000,
     in: bc8b7ef53552c2d4bce713f513418894d0e2c8dcaf72e681e1d4d5a202f1eb62 @ 1088394 8.000000000000 id=0000000000000000,
     in: 41304bbb514d1abdfdb0704bf70f8d2ec4e753c57aa34b6d0525631d79113b87 @ 1088400 1.000000000000 id=1f2510a597bd634bbd130cf21e63b4ad01f4565faf0d3eb21589f496bf28f7f2]

Or ask for specific payment ID:

.. code-block:: python

    In [2]: wallet.incoming(payment_id='f75ad90e25d71a12')
    Out[2]: 
    [in: f34b495cec77822a70f829ec8a5a7f1e727128d62e6b1438e9cb7799654d610e @ 1087601 3.000000000000 id=f75ad90e25d71a12,
     in: 5c3ab739346e9d98d38dc7b8d36a4b7b1e4b6a16276946485a69797dbf887cd8 @ 1087530 10.000000000000 id=f75ad90e25d71a12,
     in: 4ea70add5d0c7db33557551b15cd174972fcfc73bf0f6a6b47b7837564b708d3 @ 1087530 4.000000000000 id=f75ad90e25d71a12]

Or limit by both criteria at the same time:

.. code-block:: python

    In [3]: wallet.incoming(payment_id='f75ad90e25d71a12', min_height=1087601)
    Out[3]: [in: f34b495cec77822a70f829ec8a5a7f1e727128d62e6b1438e9cb7799654d610e @ 1087601 3.000000000000 id=f75ad90e25d71a12]

With Monero releases > 0.11.x you will be also able to filter payments by the address:

.. code-block:: python

    In [4]: wallet.incoming(local_address='BhE3cQvB7VF2uuXcpXp28Wbadez6GgjypdRS1F1Mzqn8Advd6q8VfaX8ZoEDobjejrMfpHeNXoX8MjY8q8prW1PEALgr1En')
    Out[4]: 
    [in: 5ef7ead6a041101ed326568fbb59c128403cba46076c3f353cd110d969dac808 @ 1087601 7.000000000000 id=0000000000000000,
     in: 41304bbb514d1abdfdb0704bf70f8d2ec4e753c57aa34b6d0525631d79113b87 @ 1088400 1.000000000000 id=1f2510a597bd634bbd130cf21e63b4ad01f4565faf0d3eb21589f496bf28f7f2,
     in: f34b495cec77822a70f829ec8a5a7f1e727128d62e6b1438e9cb7799654d610e @ 1087601 3.000000000000 id=f75ad90e25d71a12]

The same criteria may be used for filtering outgoing payments.

.. note:: In outgoing payments the `local_address` is always set to the account's main address,
          making such filtering useless.

Payment and Transaction objects
-------------------------------

Each of the payments returned by the wallet carries all essential data:

.. code-block:: python

    In [5]: incoming = wallet.incoming()

    In [6]: incoming[0].amount
    Out[6]: Decimal('2.120000000000')

    In [7]: incoming[0].local_address
    Out[7]: 9tQoHWyZ4yXUgbz9nvMcFZUfDy5hxcdZabQCxmNCUukKYicXegsDL7nQpcUa3A1pF6K3fhq3scsyY88tdB1MqucULcKzWZC

    In [8]: incoming[0].payment_id
    Out[8]: cb248105ea6a9189


It also has a related ``Transaction`` object which offers additional information:

.. code-block:: python

    In [9]: incoming[0].transaction.height
    Out[9]: 1087530

    In [10]: incoming[0].transaction.hash
    Out[10]: 'e9a71c01875bec20812f71d155bfabf42024fde3ec82475562b817dcc8cbf8dc'


Having a running instance of the wallet you may always check the number of confirmations for each
payment object:

.. code-block:: python

    In [11]: wallet.confirmations(incoming[0])
    Out[11]: 5132

Mempool: Unconfirmed payments
-----------------------------

Sending payments
----------------

API reference
-------------

.. automodule:: monero.transaction
   :members: