To my knowledge yes, you'd have to double check their documentation but thats what makes sense to me as far as they have been developing and they want to make sure that early holders and developers get their moneys worth from early investments
But will the ERC20 tokens that are in the block reward pool then be burned after the CovaChain launched? It doesn't make sense to have ERC20 tokens for block rewards.
Yes, I know that their own blockchain (CovaChain) is still in its testnet stage. But their ERC20 tokens aren't just placeholders. Once their mainnet goes live, there will be both ERC20 tokens and coins on the CovaChain iirc.