• Each scheduled call now exists as it’s own contract, referred to as a call contract.
  • The authorization API has been removed. It is now possible for the contract being called to look up msg.sender on the scheduling contract and find out who scheduled the call.
  • The account management API has been removed. Each call contract now manages it’s own gas money, the remainder of which is given back to the scheduler after the call is executed.
  • All of the information that used to be stored about the call execution is now placed in event logs (gasUsed, wasSuccessful, wasCalled, etc)


  • Convert Alarm service to use library contracts for all functionality.
  • CallerPool contract API is now integrated into the Alarm API


  • Convert Alarm service to use Grove for tracking scheduled call ordering.
  • Enable logging most notable Alarm service events.
  • Two additional convenience functions for invoking scheduleCall with gracePeriod and nonce as optional parameters.


  • Fix for Issue 42. Make the free-for-all bond bonus restrict itself to the correct set of callers.
  • Re-enable the right tree rotation in favor of removing three getLastX function. This is related to the pi-million gas limit which is restricting the code size of the contract.


  • Initial release.