addTip

• the function allows the user to increase the payout for a specific request

    addTip(uint _requestId, uint _tip)

where: * _requestId is the ID for the value to be mined * _tip is the amount the requester is willing to pay to get on the queue

retrieveData

To read data, users will need to call these two functions:

• the function allows the user to read the data for the given request ID and timestamp

retrieveData(uint _requestId, uint _timestamp)

where:

• _requestId -- is the request ID

• _timestamp -- is the unix timestamp to retrieve a value from

getLastQuery

• the function allows the user to read data from the latest request ID and timestamp mined.

getLastNewValue()

This is an example of a function that would need to be added to a contract so that it can read data from an oracle contact if the contract holds Tributes:

contract Oracle is usingTellor {
             ...
  function getLastNewValue() public returns(uint,bool) {
    (value,ifRetrieve)  = getLastNewValue();
                           return (value, ifRetreive);
             ...
  }