diff --git a/helpers/index.js b/helpers/index.js
index 2f3fc11..ca3fa35 100644
--- a/helpers/index.js
+++ b/helpers/index.js
@@ -4,15 +4,24 @@ const clients = require("./clients");
 let electrumKeepAlive = () => null;
 let electrumKeepAliveInterval = 60000;
 
-const getTimeout = ({ arr = undefined, timeout = 1000 } = {}) => {
+const _getTimeout = ({ arr = [], timeout = 1000 } = {}) => {
 	try {
+		if (!Array.isArray(arr)) arr = _attemptToGetArray(arr);
 		if (arr && Array.isArray(arr)) return arr.length * timeout;
-		return timeout;
+		return timeout || 1000;
 	} catch {
 		return timeout;
 	}
 }
 
+const _attemptToGetArray = (scriptHashes = []) => {
+	try {
+		if (Array.isArray(scriptHashes)) return scriptHashes;
+		if ("data" in scriptHashes) return scriptHashes.data;
+		return [];
+	} catch { return []; }
+};
+
 const promiseTimeout = (ms, promise) => {
 	let id;
 	let timeout = new Promise((resolve) => {
@@ -56,7 +65,7 @@ const pingServer = ({ id = Math.random() } = {}) => {
 	return new Promise(async (resolve) => {
 		try {
 			if (clients.mainClient[clients.network] === false) await connectToRandomPeer(clients.network, clients.peers[clients.network]);
-			const { error, data } = await promiseTimeout(getTimeout(), clients.mainClient[clients.network].server_ping());
+			const { error, data } = await promiseTimeout(_getTimeout(), clients.mainClient[clients.network].server_ping());
 			resolve({ id, error, method, data, network: clients.network });
 		} catch (e) {
 			resolve({ id, error: true, method, data: e, network: clients.network });
@@ -251,7 +260,7 @@ const getAddressScriptHashBalance = ({ scriptHash = "", id = Math.random(), netw
 	return new Promise(async (resolve) => {
 		try {
 			if (clients.mainClient[network] === false) await connectToRandomPeer(network, clients.peers[network]);
-			const { error, data } = await promiseTimeout(getTimeout(), clients.mainClient[network].blockchainScripthash_getBalance(scriptHash));
+			const { error, data } = await promiseTimeout(_getTimeout(), clients.mainClient[network].blockchainScripthash_getBalance(scriptHash));
 			resolve({ id, error, method, data, scriptHash, network });
 		} catch (e) {
 			console.log(e);
@@ -308,7 +317,7 @@ const getFeeEstimate = ({ blocksWillingToWait = 8, id = Math.random(), network =
 	return new Promise(async (resolve) => {
 		try {
 			if (clients.mainClient[network] === false) await connectToRandomPeer(network, clients.peers[network]);
-			const response = await promiseTimeout(getTimeout(), clients.mainClient[network].blockchainEstimatefee(blocksWillingToWait));
+			const response = await promiseTimeout(_getTimeout(), clients.mainClient[network].blockchainEstimatefee(blocksWillingToWait));
 			resolve({ ...response, id, method, network });
 		} catch (e) {
 			console.log(e);
@@ -322,7 +331,8 @@ const getAddressScriptHashBalances = ({ scriptHashes = [], id = Math.random(), n
 	return new Promise(async (resolve) => {
 		try {
 			if (clients.mainClient[network] === false) await connectToRandomPeer(network, clients.peers[network]);
-			const response = await promiseTimeout(getTimeout(), clients.mainClient[network].blockchainScripthash_getBalanceBatch(scriptHashes));
+			const timeout = _getTimeout({ arr: scriptHashes });
+			const response = await promiseTimeout(timeout, clients.mainClient[network].blockchainScripthash_getBalanceBatch(scriptHashes));
 			resolve({ ...response, id, method, network });
 		} catch (e) {
 			console.log(e);
@@ -331,12 +341,76 @@ const getAddressScriptHashBalances = ({ scriptHashes = [], id = Math.random(), n
 	});
 };
 
+const listUnspentAddressScriptHashes = ({ scriptHashes = [], id = Math.random(), network = "", timeout = undefined } = {}) => {
+	const method = "listUnspentAddressScriptHashes";
+	return new Promise(async (resolve) => {
+		try {
+			if (clients.mainClient[network] === false) await connectToRandomPeer(network, clients.peers[network]);
+			if (!timeout) timeout = _getTimeout({ arr: scriptHashes });
+			const { error, data } = await promiseTimeout(timeout, clients.mainClient[network].blockchainScripthash_listunspentBatch(scriptHashes));
+			resolve({ id, error, method, data, network });
+		} catch (e) {
+			console.log(e);
+			resolve({ id, error: true, method, data: e, network });
+		}
+	});
+};
+
+const getAddressScriptHashesHistory = ({ scriptHashes = [], id = Math.random(), network = "", timeout = undefined } = {}) => {
+	const method = "getScriptHashesHistory";
+	return new Promise(async (resolve) => {
+		try {
+			if (clients.mainClient[network] === false) await connectToRandomPeer(network, clients.peers[network]);
+			if (!timeout) timeout = _getTimeout({ arr: scriptHashes });
+			const { error, data } = await promiseTimeout(timeout, clients.mainClient[network].blockchainScripthash_getHistoryBatch(scriptHashes));
+			resolve({ id, error, method, data, network });
+		} catch (e) {
+			console.log(e);
+			resolve({ id, error: true, method, data: e, network });
+		}
+	});
+};
+
+const getAddressScriptHashesMempool = ({ scriptHashes = [], id = Math.random(), network = "", timeout = undefined } = {}) => {
+	const method = "getAddressScriptHashesMempool";
+	return new Promise(async (resolve) => {
+		try {
+			if (clients.mainClient[network] === false) await connectToRandomPeer(network, clients.peers[network]);
+			if (!timeout) timeout = _getTimeout({ arr: scriptHashes });
+			const { error, data } = await promiseTimeout(timeout, clients.mainClient[network].blockchainScripthash_getMempoolBatch(scriptHashes));
+			resolve({ id, error, method, data, network });
+		} catch (e) {
+			console.log(e);
+			resolve({ id, error: true, method, data: e, network });
+		}
+	});
+};
+
+const getTransactions = ({ txHashes = [], id = Math.random(), network = "", timeout = undefined } = {}) => {
+	const method = "getTransactions";
+	return new Promise(async (resolve) => {
+		try {
+			if (clients.mainClient[network] === false) await connectToRandomPeer(network, clients.peers[network]);
+			if (!timeout) timeout = _getTimeout({ arr: scriptHashes });
+			const { error, data } = await promiseTimeout(timeout, clients.mainClient[network].blockchainTransaction_getBatch(txHashes));
+			resolve({ id, error, method, data, network });
+		} catch (e) {
+			console.log(e);
+			resolve({ id, error: true, method, data: e, network });
+		}
+	});
+};
+
 module.exports = {
 	start,
 	stop,
 	pingServer,
 	getAddressScriptHashBalance,
 	getAddressScriptHashBalances,
+	listUnspentAddressScriptHashes,
+	getAddressScriptHashesHistory,
+	getAddressScriptHashesMempool,
+	getTransactions,
 	getPeers,
 	subscribeHeader,
 	subscribeAddress,
diff --git a/lib/client.js b/lib/client.js
index f32f5c0..85377a1 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -53,16 +53,30 @@ class Client {
             let arguments_far_calls = {};
             let contents = [];
             const { key, data } = params;
-            for (let item of data) {
+            if (Array.isArray(data)) {
+                for (let item of data) {
+                    const id = ++this.id;
+                    let param = "";
+                    if (key in item) param = item[key];
+                    if (secondParam !== undefined) {
+                        contents.push(util.makeRequest(method, [param, secondParam], id));
+                    } else {
+                        contents.push(util.makeRequest(method, [param], id));
+                    }
+                    arguments_far_calls[id] = { param, data: item };
+                }
+            }
+
+            for (let item of Object.keys(data)) {
                 const id = ++this.id;
                 let param = "";
-                if (key in item) param = item[key];
+                if (key in data[item]) param = data[item][key];
                 if (secondParam !== undefined) {
                     contents.push(util.makeRequest(method, [param, secondParam], id));
                 } else {
                     contents.push(util.makeRequest(method, [param], id));
                 }
-                arguments_far_calls[id] = { param, data: item };
+                arguments_far_calls[id] = { param, data: data[item] };
             }
             const content = '[' + contents.join(',') + ']';
             this.callback_message_queue[this.id] = util.createPromiseResultBatch(resolve, reject, arguments_far_calls);
diff --git a/lib/electrum_client.js b/lib/electrum_client.js
index d88ff79..38e1719 100644
--- a/lib/electrum_client.js
+++ b/lib/electrum_client.js
@@ -203,7 +203,7 @@ class ElectrumClient extends Client{
 	        return { error: true, data: e };
         }
     }
-	
+
 	/**
 	 * @param {Object[]} scripthashes - [{ scriptHash: "", address: "", path: "" }]
 	 * @param {string} scripthashes[].scriptHash - The address scripthash.
@@ -344,7 +344,7 @@ class ElectrumClient extends Client{
 			return { error: true, data: e }
 		}
 	}
-	
+
 	requestBatch(method, params, secondParam) {
 		const parentPromise = super.requestBatch(method, params, secondParam);
 		return parentPromise.then(response => response);
@@ -361,6 +361,9 @@ class ElectrumClient extends Client{
 	blockchainTransaction_getBatch(tx_hashes, verbose) {
 		return this.requestBatch('blockchain.transaction.get', tx_hashes, verbose);
 	}
+	blockchainScripthash_getMempoolBatch(scripthashes){
+		return this.requestBatch('blockchain.scripthash.get_mempool', scripthashes);
+	}
 }
 
 module.exports = ElectrumClient