diff --git a/src/blockchain/ohlcs.js b/src/blockchain/ohlcs.js
index a46b735..462349b 100644
--- a/src/blockchain/ohlcs.js
+++ b/src/blockchain/ohlcs.js
@@ -7,8 +7,10 @@ export const WIDE_PRICE_FORMAT = {decimals:38, width:512, signed:false}; // 38 d
 export function subOHLC( chainId, pool, period ) {
     const key = `${pool}|${period}`
     const ckey = `${chainId}|${key}`
-    if (!(key in ohlcSubCounts) || ohlcSubCounts[ckey] === 0) {
+    // console.log('subOHLC', chainId, pool, period, ckey, ohlcSubCounts[ckey])
+    if (!(ckey in ohlcSubCounts) || ohlcSubCounts[ckey] === 0) {
         ohlcSubCounts[ckey] = 1
+        console.log('subscribing OHLCs', chainId, key)
         socket.emit('subOHLCs', chainId, [key])
     } else
         ohlcSubCounts[ckey]++
@@ -18,14 +20,17 @@ export function subOHLC( chainId, pool, period ) {
 export function unsubOHLC( chainId, pool, period ) {
     const key = `${pool}|${period}`
     const ckey = `${chainId}|${key}`
+    // console.log('unsubOHLC', chainId, pool, period, ckey, ohlcSubCounts[ckey])
     if (!(ckey in ohlcSubCounts) || ohlcSubCounts[ckey] === 0) {
         console.error('overdecremented ohlc', pool, period)
         ohlcSubCounts[ckey] = 1
     } else {
         ohlcSubCounts[ckey]--
-        if (ohlcSubCounts[key] === 0)
+        if (ohlcSubCounts[ckey] === 0) {
+            console.log('unsubscribing OHLCs', chainId, key)
             // noinspection JSCheckFunctionSignatures
             socket.emit('unsubOHLCs', chainId, [key])
+        }
     }
 }
 
diff --git a/src/charts/datafeed.js b/src/charts/datafeed.js
index 2111e1a..f0daab8 100644
--- a/src/charts/datafeed.js
+++ b/src/charts/datafeed.js
@@ -338,30 +338,38 @@ export const DataFeed = {
 		subscriberUID,
 		onResetCacheNeededCallback,
 	) => {
-		console.log('[subscribeBars]: Method call with subscriberUID:', subscriberUID);
+		console.log('[subscribeBars]', symbolInfo, resolution, subscriberUID);
 		const chainId = useStore().chainId.value;
 		const poolAddr = useChartOrderStore().selectedPool[0];
 		const period = tvResolutionToPeriodString(resolution);
 		subscriptions[subscriberUID] = [chainId, poolAddr, period]
-		DataFeed.subscribeBarsOnRealtimeCallback = onRealtimeCallback;
+		const key = `${chainId}|${poolAddr}|${period}`;
+		subscription_callbacks[key] = [onRealtimeCallback, onResetCacheNeededCallback]
+		console.log('sub', key)
 		subOHLC(chainId, poolAddr, period)
 	},
 
 	unsubscribeBars: (subscriberUID) => {
-		console.log('[unsubscribeBars]: Method call with subscriberUID:', subscriberUID);
+		console.log('[unsubscribeBars]', subscriberUID);
 		const [chainId, poolAddr, period] = subscriptions[subscriberUID]
-		delete subscriptions[subscriberUID]
 		unsubOHLC(chainId, poolAddr, period)
+		delete subscriptions[subscriberUID]
+		const key = `${chainId}|${poolAddr}|${period}`;
+		console.log('unsub',key)
+		delete subscription_callbacks[key]
 	},
 
-	poolCallbackState : {lastBar: null},
+	poolCallbackState : {lastBar:{'chain|pool|period':null}},
 
-	poolCallback(chainId, pool, ohlcs) {
-		console.log("poolCallback: chainId, pool, ohlcs:", chainId, pool, ohlcs)
+	poolCallback(chainId, poolPeriod, ohlcs) {
+		console.log("poolCallback: chainId, pool, ohlcs:", chainId, poolPeriod, ohlcs)
 		if (ohlcs == null) {
 			console.log("poolCallback: ohlcs == null, nothing to do.")
 			return;
 		}
+		const key = `${chainId}|${poolPeriod}`;
+		console.log('key lookup',key,subscription_callbacks[key])
+		const [onRealtimeCallback, onResetCacheNeededCallback] = subscription_callbacks[key]
 		let ohlc = ohlcs.at(-1);
 		console.log("poolCallBack ohlc:", new Date(Number(ohlc[0])*1000).toGMTString(), ohlc)
 		for (let i = 0; i<ohlc.length; i++) if (ohlc[i]!=null) ohlc[i] = Number(ohlc[i])
@@ -379,33 +387,34 @@ export const DataFeed = {
 			bar = maybeInvertBar(bar)
 			checkBar(bar, "poolCallback, after inversion:")
 			console.log('DataFeed.poolCallback', date.toGMTString(), ohlcs, bar)
-			let lastBar = DataFeed.poolCallbackState.lastBar
+			let lastBar = DataFeed.poolCallbackState.lastBar[key]
 			// No last bar then initialize bar
-			if (lastBar===null) {
+			if (lastBar===undefined) {
 				console.log('DataFeed.poolCallback', new Date(bar.time).toGMTString(), 'lastBar=', bar)
-				DataFeed.subscribeBarsOnRealtimeCallback(bar)
-				DataFeed.poolCallbackState.lastBar = bar
+				onRealtimeCallback(bar)
+				DataFeed.poolCallbackState.lastBar[key] = bar
 			}
 			// bar time is less than last bar then ignore
 			else if (bar.time < lastBar.time ) {
 			}
 			// bar time equal to last bar then replace last bar
-			else if (bar.time == lastBar.time ) {
+			else if (bar.time === lastBar.time ) {
 				console.log('DataFeed.poolCallback', new Date(bar.time).toGMTString(), 'lastBar=', bar)
 				if (bar.high < lastBar.high) console.log("bar.high < lastBar.high (lastbar=)")
 				if (bar.low  > lastBar.low)  console.log("bar.low  > lastBar.low  (lastbar=)")
-				DataFeed.subscribeBarsOnRealtimeCallback(bar)
-				DataFeed.poolCallbackState.lastBar = bar
+				onRealtimeCallback(bar)
+				DataFeed.poolCallbackState.lastBar[key] = bar
 			}
 			// new bar, then render last and replace last bar
 			else {
 				console.log('DataFeed.poolCallback', new Date(bar.time).toGMTString(), 'lastBar=', bar)
-				DataFeed.subscribeBarsOnRealtimeCallback(bar)
-				DataFeed.poolCallbackState.lastBar = bar
+				onRealtimeCallback(bar)
+				DataFeed.poolCallbackState.lastBar[key] = bar
 			}
 		// }
 	}
-};
+}
 
 let defaultSymbol = null
 const subscriptions = {}
+const subscription_callbacks = {}