* Save deployer's address on contract initialization
* Add modifier for requiring tx sender to be deployer
* Add migrationDone flag and function to set it to finished status

@@ -61,2 +67,2 @@
-    require(address(tokenContract) == address(0) || contributorContract.addressIsCore(msg.sender), "Core only");
-    tokenContract = IToken(token);
+  function finishMigration() public onlyDeployer {
+    migrationDone = true;

@@ -156,0 +158,4 @@
+  function add(uint32 amount, uint32 contributorId, bytes32 hashDigest, uint8 hashFunction, uint8 hashSize, uint256 confirmedAtBlock, bool vetoed) public {
+    // require(canPerform(msg.sender, ADD_CONTRIBUTION_ROLE, new uint32[](0)), 'nope');
+    // TODO hubot neither has kredits nor a core account
+    require((confirmedAtBlock == 0 && vetoed == false) || migrationDone == false, 'extra arguments during migration only');

@@ -30,3 +24,4 @@
   function setContributorContract(address contributor) public {
     require(address(contributorContract) == address(0) || contributorContract.addressIsCore(msg.sender), "Core only");
     contributorContract = ContributorInterface(contributor);
+    contributorContractAddress = contributor;

@@ -0,0 +7,4 @@
+  console.log(`Using Contribution at: ${kredits.Contribution.contract.address}`);
+
+  const count = await kredits.Contribution.count;
+  const currentBlockHeight = await XMLHttpRequest.ethers.provider.getBlockNumber();