message: Assert that zerocoinDenomList is size 8.
  Prevent any future development from forgetting to update the checkpointing process if the denom list changes.
diff: @@ -68,6 +68,9 @@ CBigNum AccumulatorMap::GetValue(CoinDenomination denom)
  uint256 AccumulatorMap::GetCheckpoint()
  {
  uint256 nCheckpoint;
  +
  + //Prevent possible overflows from future changes to the list and forgetting to update this code
  + assert(zerocoinDenomList.size() == 8);
  for (auto& denom : zerocoinDenomList) {
  CBigNum bnValue = mapAccumulators.at(denom)->getValue();
  uint32_t nCheckSum = GetChecksum(bnValue);
  