Coins
=====

The ``coins`` app handles cryptocurrencies: their identifiers,
pricing, and the periodic tasks that keep the data fresh.

.. toctree::
   :maxdepth: 1

   forms
   models
   tasks
   views

Coin IDs
--------

Coins have symbols just like stocks. But unlike stock symbols, coin
symbols are not unique -- which leads to the concept of a *coin ID*.
A coin ID is a unique coin identifier that disambiguates a coin no
matter what symbol it has.

Coin IDs are not needed in most cases. But take Statera and Starta:
they share the symbol ``STA``. When the system detects a collision,
the user is prompted to enter a coin ID too (in the create / update
coin form).