CBlockIndex* gdBlockPointer = NULL;
std::map<std::string,int64> balances;

void processNextBlockIntoGrantDatabase(){

	//printf("processNextBlockIntoGrantDatabase %d\n",grantDatabaseBlockHeight+1);

	CBlock block;

	//If it's the first block, we'll start with the Genesis Block
	if(gdBlockPointer==NULL){
		gdBlockPointer=pindexGenesisBlock;
	}else{
		gdBlockPointer=gdBlockPointer->pnext;
	}
	block.ReadFromDisk(gdBlockPointer);
	//ReadBlockFromDisk(block, gdBlockPointer);
        //block.ReadFromDisk(gdBlockPointer,true); //Litecoin codebase method


	//Look at all transactions in the block to update balances and see if they contain voting preferences
	for (int i = 0; i <block.vtx.size(); i++){
		//Deal with outputs first - increase balances and note what the votes are
		for (int j = 0; j <block.vtx[i].vout.size(); j++){
			CTxDestination address;
			ExtractDestination(block.vtx[i].vout[j].scriptPubKey,address);

			string receiveAddress=CBitcoinAddress(address).ToString().c_str();
			int64 theAmount=block.vtx[i].vout[j].nValue;

			//Update balance - if no previous balance, should start at 0
			balances[receiveAddress]=balances[receiveAddress]+theAmount;

		}

		//Deal with the inputs - reduce balances and apply voting preferences noted in the outputs
		for (int j = 0; j <block.vtx[i].vin.size(); j++){
			if(block.vtx[i].IsCoinBase()){
				//This is a coinbase transaction, there is no input to reduce
			}else{
				CTransaction txPrev;
				uint256 hashBlock;
				GetTransaction(block.vtx[i].vin[j].prevout.hash,txPrev,hashBlock);
				CTxDestination source;
				ExtractDestination(txPrev.vout[block.vtx[i].vin[j].prevout.n].scriptPubKey,source);
				string spendAddress=CBitcoinAddress(source).ToString().c_str();
				int64 theAmount=txPrev.vout[block.vtx[i].vin[j].prevout.n].nValue;

				//Reduce balance
				balances[spendAddress]=balances[spendAddress]-theAmount;
			}
		}
	}
}