* Validated users are those that validate their phone number in Kenya.
* A monthly Sarafu holding tax (demurrage) of 2% is deducted from users
* Each month (after a number of blocks) the total amount tax is distributed evenly out to _active_ users.
* any single transaction by a user is considered _active_ (heartbeat) (possibly add minimum size of heartbeat in constructor (TODO))
* This is meant to result in a disincentivization to hold (hodl) the Sarafu token and increase its usage as a medium of excahnge rather than a store of value.
* Inputs to Constructor (Set only once during contract deployment can't be changed )
*`Demmurage` aka Decay amount: A percentage of token supply that will be charged once per - aka `period` and evenly redistributed to _active_ users
* Demmurage Period (blocks)- aka `period`: The number of blocks (equivalent to a time frame) over which a new Holding Fee is applied and redistributed.
* Inflated Balance: The inflated balance of each user is stored for bookkeeping.
* Number of Decimals: Resolution on token (TODO) (Default 6)
* Minimum Activity Volume: (TODO) the minimum transaction amount to be considered active (Default 0)
* Minimum Activity Txns: (TODO) the minimum number of transaction to be considered active (Default 1)
* Sink Token Address: If no one trades the tax goes to this address