    function computePhase0Eth1DataRoot(bytes32[NUM_ETH1_DATA_FIELDS] calldata eth1DataFields) internal pure returns(bytes32) {  
        bytes32[] memory paddedEth1DataFields = new bytes32[](2**ETH1_DATA_FIELD_TREE_HEIGHT);
        
        for (uint256 i = 0; i < ETH1_DATA_FIELD_TREE_HEIGHT; ++i) {
            paddedEth1DataFields[i] = eth1DataFields[i];
        }

        return Merkle.merkleizeSha256(paddedEth1DataFields);
    }
    function computePhase0Eth1DataRoot(bytes32[NUM_ETH1_DATA_FIELDS] calldata eth1DataFields) internal pure returns(bytes32) {  
        bytes32[] memory paddedEth1DataFields = new bytes32[](2**ETH1_DATA_FIELD_TREE_HEIGHT);
        
_        for (uint256 i = 0; i < ETH1_DATA_FIELD_TREE_HEIGHT; ++i) {
+        for (uint256 i = 0; i < NUM_ETH1_DATA_FIELDS; ++i) {
           paddedEth1DataFields[i] = eth1DataFields[i];
        }

        return Merkle.merkleizeSha256(paddedEth1DataFields);
    }
