/// <summary>
        /// analysis block transaction execute result logs
        /// </summary>
        /// <param name="blockHeight"></param>
        /// <returns></returns>
        public async Task <bool> Sync(uint blockHeight)
        {
            if (blockHeight > Blockchain.Singleton.Height)
            {
                return(false);
            }

            if (_db.HasSyncIndex(blockHeight))
            {
                return(true);
            }

            var block = Blockchain.Singleton.GetBlock(blockHeight);

            if (block.Transactions.IsEmpty())
            {
                return(true);
            }
            using var snapshot = Blockchain.Singleton.GetSnapshot();
            foreach (var transaction in block.Transactions)
            {
                _db.AddTransaction(new TransactionInfo()
                {
                    TxId        = transaction.Hash,
                    BlockHeight = blockHeight,
                    Sender      = transaction.Sender,
                    Time        = block.Timestamp.FromTimestampMS(),
                });
                var executeResult = _db.GetExecuteLog(transaction.Hash);
                if (executeResult == null || executeResult.VMState.HasFlag(VMState.FAULT) || executeResult.Notifications.IsEmpty())
                {
                    continue;
                }

                foreach (var notification in executeResult.Notifications)
                {
                    HasTransfer(notification, transaction, block, snapshot);
                }

                //shouldCommit = executeResult.Notifications.Aggregate(shouldCommit, (current, notification) => current | HasTransfer(notification, transaction, block, snapshot));
            }

            _db.AddSyncIndex(blockHeight);
            _db.Commit();
            Console.WriteLine($"Syncing:{_scanHeight}");
            if (_db.LiveTime.TotalSeconds > 15)
            {
                //release memory
                _db.Dispose();
                _db = new TrackDB();
            }
            return(true);
        }
        /// <summary>
        /// analysis block transaction execute result logs
        /// </summary>
        /// <param name="blockHeight"></param>
        /// <returns></returns>
        public async Task <bool> Sync(uint blockHeight)
        {
            if (blockHeight > this.GetCurrentHeight())
            {
                return(false);
            }

            if (_db.HasSyncIndex(blockHeight))
            {
                return(true);
            }

            var block     = blockHeight.GetBlock();
            var blockTime = block.Timestamp.FromTimestampMS();

            //var balanceChanges = new HashSet<(UInt160 account, UInt160 asset)>();
            foreach (var transaction in block.Transactions)
            {
                _db.AddTransaction(new TransactionInfo()
                {
                    TxId        = transaction.Hash,
                    BlockHeight = blockHeight,
                    Sender      = transaction.Sender,
                    Time        = blockTime,
                });
                //balanceChanges.Add((transaction.Sender, NativeContract.GAS.Hash));
                var invokeMethods = GetInvokeMethods(transaction);
                if (invokeMethods.NotEmpty())
                {
                    foreach (var invokeMethod in invokeMethods)
                    {
                        _db.AddInvokeTransaction(transaction.Hash, invokeMethod.contract, string.Join(',', invokeMethod.methods));
                    }
                }
            }

            SyncContracts(blockHeight, blockTime);



            var transfers     = new List <TransferInfo>();
            var transferItems = _levelDb.GetTransfers(blockHeight);

            if (transferItems.NotEmpty())
            {
                foreach (var item in transferItems)
                {
                    transfers.Add(new TransferInfo()
                    {
                        BlockHeight = blockHeight,
                        TimeStamp   = block.Timestamp,
                        TxId        = item.TxId,
                        From        = item.From,
                        To          = item.To,
                        Amount      = item.Amount,
                        Asset       = item.Asset,
                        Trigger     = item.Trigger,
                    });
                }
            }

            foreach (var transferInfo in transfers)
            {
                _db.AddTransfer(transferInfo);
            }

            var balanceChanges = _levelDb.GetBalancingAccounts(blockHeight);

            if (balanceChanges.NotEmpty())
            {
                var snapshot = this.GetDefaultSnapshot();
                foreach (var balanceChange in balanceChanges)
                {
                    UpdateBalance(balanceChange.Account, balanceChange.Asset, snapshot);
                }
            }

            _db.AddSyncIndex(blockHeight);
            _db.Commit();
            Console.WriteLine($"Synced:{_scanHeight}");
            if (_db.LiveTime.TotalSeconds > 15)
            {
                //release memory
                _db.Dispose();
                _db = new TrackDB();
            }
            return(true);
        }