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dms.sol

pragma solidity ^0.4.8;

contract dms
{
  event is_Alive(uint blocknum);

  address public owner;
  address public recipient;

  uint public lastblock;
  
  constructor () public {
    owner = msg.sender;

    recipient = "replace with recipient address";
    lastblock = block.number;
    emit is_Alive(lastblock);
  }

  modifier isOwner(){
    require(msg.sender==owner,'sender is not owner');

    lastblock = block.number;
    emit is_Alive(lastblock);

    _;
  }

  
  function release() public{

    
    require(block.number > lastblock + 10,"owner was recently active") ;

    selfdestruct(recipient);
  }
  
  function releaseToOwner() public isOwner{
      require(block.number <= lastblock + 10,"kinda dark but owner is dead bruh");
      selfdestruct(owner);
  }

  function is_alive() public isOwner returns(bool) {
    return true;
  }

}