From 98aa2e52524f4f9aa000d62d9f948aa712e861b8 Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Tue, 29 Oct 2019 13:37:01 -0400
Subject: [PATCH 01/10] update

---
 README.md                                  |  3 +-
 examples/functions.js                      | 15 ++++----
 tutorials/1-Metaverse-Wallet/README.md     | 11 +++---
 tutorials/1-Metaverse-Wallet/index2.html   | 43 ----------------------
 tutorials/1-Metaverse-Wallet/solution.html |  1 -
 tutorials/1-Metaverse-Wallet/solution.js   |  2 -
 tutorials/2-Avatars-and-MSTs/solution.js   | 11 +++++-
 tutorials/3-MITs/solution.js               |  1 -
 8 files changed, 22 insertions(+), 65 deletions(-)
 delete mode 100644 tutorials/1-Metaverse-Wallet/index2.html

diff --git a/README.md b/README.md
index 2f313bc..26ae346 100644
--- a/README.md
+++ b/README.md
@@ -128,8 +128,7 @@ and add
 
 ```
 
-
-To interact with webapps you must generate "index.js" from mvs-blockchain-js and "metaverse.min.js" from metaversejs. To generate these files you must clone each repository and simply run
+To interact with webapps you must generate "index.js" from mvs-blockchain-js and "metaverse.min.js" from metaversejs. To generate these files you must clone each repository separately, namely [metaversjs](https://github.com/canguruhh/metaversejs) and [mvs-blockchain-js](https://github.com/mvs-org/mvs-blockchain-js) and simply run
 
 ```
 grunt
diff --git a/examples/functions.js b/examples/functions.js
index 670cd78..1d94aa5 100644
--- a/examples/functions.js
+++ b/examples/functions.js
@@ -5,7 +5,7 @@ let blockchain = require('../mvs-blockchain-js')({
 let Metaverse = require('metaversejs');
 
 var wallet
-var mnemonic = "van juice oak general lyrics gravity hammer shield over eager crew volume survey join lonely purchase kitten artwork mass cousin process mixture add knife"
+var mnemonic = "butter vacuum breeze glow virtual mutual veteran argue want pipe elite blast judge write sand toilet file joy exotic reflect truck topic receive wait"
 var addresses
 var balances
 
@@ -22,7 +22,7 @@ async function run(){
 
   console.log("Sending ETP..............")
   let amountToSend = 10000000
-  //await sendETP(amountToSend)
+  await sendETP(amountToSend)
   console.log("ETP Sent")
 
   console.log("Depositing ETP............")
@@ -32,8 +32,8 @@ async function run(){
   console.log("ETP deposited")
 
   console.log("Registering Avatar............")
-  let avatarName = "testguy3"
-  let avatarAddress = wallet.getAddress(0)
+  let avatarName = "testguy4"
+  let avatarAddress = wallet.getAddress(2)
   //await registerAvatar(avatarName,avatarAddress)
   console.log("avatar " + avatarName + " Registered to " + avatarAddress)
 
@@ -55,14 +55,14 @@ async function run(){
   var target = {
       "COOOL": 1
   };
-  await sendMST(target)
+  //await sendMST(target)
   console.log("MST Sent")
 
 
   console.log("Registering MIT................")
 
 
-  let MITsymbol = "testar2"
+  let MITsymbol = "testar7"
   let avatar = "testguy3"
   let content = "some test content"
   //await issueMIT(avatar,MITsymbol,content)
@@ -75,7 +75,7 @@ async function run(){
   let MITToSend = "testar"
   let sender_avatar = "testguy3"
   let recipient_avatar = "Tal"
-  await sendMIT(sender_avatar,recipient_avatar,MITToSend)
+//  await sendMIT(sender_avatar,recipient_avatar,MITToSend)
 
 }
 
@@ -101,7 +101,6 @@ async function getBalances(){
 
   let height = await blockchain.height()
   let txs = await blockchain.addresses.txs(wallet.getAddresses())
-  console.log(txs)
   let utxo = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses())
   let balances = await blockchain.balance.all(utxo, wallet.getAddresses(), height)
 
diff --git a/tutorials/1-Metaverse-Wallet/README.md b/tutorials/1-Metaverse-Wallet/README.md
index df8debb..9da1d4d 100644
--- a/tutorials/1-Metaverse-Wallet/README.md
+++ b/tutorials/1-Metaverse-Wallet/README.md
@@ -32,7 +32,7 @@ Start by setting up a directory to work in
 
 ```
 cd MetaverseTutorials/tutorials/playground
-touch tut1.html
+touch index.html
 touch tut1.js
 ```
 
@@ -77,6 +77,8 @@ Open tut1.html and use this HTML front end as the base of your app.
 </html>
 ```
 
+
+
 You should now be set up to use the Metaverse javascript libraries. We are using the async/await syntax. The await keyword can only be used in async functions so we will create async functions to perform all actions.
 
 First lets define some key variables
@@ -234,9 +236,6 @@ Next serve the webpage with
 python -m SimpleHTTPServer 3333
 ```
 
-or however you prefer
-
-Verify that you have connected metaverse to the webapp by opening the browser console and typing "Metaverse". You should see the Metaverse object come up and look something like
+or however you prefer.
 
-_TODO: Expand upon once metaversjs referencing is completed_
-Now connect elements to the js functions and youre done!
+The next step is to connect the elements to the functions
diff --git a/tutorials/1-Metaverse-Wallet/index2.html b/tutorials/1-Metaverse-Wallet/index2.html
deleted file mode 100644
index 579bdd1..0000000
--- a/tutorials/1-Metaverse-Wallet/index2.html
+++ /dev/null
@@ -1,43 +0,0 @@
-<!DOCTYPE html>
-<html lang="en" dir="ltr">
-  <head>
-    <script src="functions.js"></script>
-    <script type="text/javascript" src="/dist/metaverse.min.js"></script>
-
-    <meta charset="utf-8">
-    <title></title>
-
-  </head>
-  <body>
-
-<h3> Create new Wallet </h3>
-
-
-
-<h3> Send ETP </h3>
-
-
-
-<h3> Check ETP Balance </h3>
-
-<h3> Issue MST </h3>
-
-<h3> Send MST </h3>
-
-<h3> Deposit </h3>
-
-<h3> Create Avatar </h3>
-
-<h3> Get Avatar </h3>
-
-<h3> Create MIT </h3>
-
-<h3> Transfer MIT </h3>
-
-<h3> Send Multisig transaction </h3>
-
-<h3> Send Locked Asset </h3>
-
-
-  </body>
-</html>
diff --git a/tutorials/1-Metaverse-Wallet/solution.html b/tutorials/1-Metaverse-Wallet/solution.html
index 736ebfe..9a833c3 100644
--- a/tutorials/1-Metaverse-Wallet/solution.html
+++ b/tutorials/1-Metaverse-Wallet/solution.html
@@ -28,7 +28,6 @@ <h5>Addresses and Balances</h5>
 
     <label id="totalBalance"></label>
 
-
     <h3> Send ETP </h3>
 
     <label>Send From </label>
diff --git a/tutorials/1-Metaverse-Wallet/solution.js b/tutorials/1-Metaverse-Wallet/solution.js
index 430e8ee..dcd4b63 100644
--- a/tutorials/1-Metaverse-Wallet/solution.js
+++ b/tutorials/1-Metaverse-Wallet/solution.js
@@ -12,8 +12,6 @@ var hidden = true
 
 async function initialize(){
   blockchain = await Blockchain({url: "https://explorer-testnet.mvs.org/api/"})
-  let test = document.getElementById("addressSelect")
-  console.log(test)
 }
 
 async function generateMnemonic(){
diff --git a/tutorials/2-Avatars-and-MSTs/solution.js b/tutorials/2-Avatars-and-MSTs/solution.js
index 2d5a361..4ac7921 100644
--- a/tutorials/2-Avatars-and-MSTs/solution.js
+++ b/tutorials/2-Avatars-and-MSTs/solution.js
@@ -71,12 +71,19 @@ async function issueMST(){
   let txs = await blockchain.addresses.txs(wallet.getAddresses())
   let utxos = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses()) //Get all utxo
   let result = await Metaverse.output.findUtxo(utxos, {}, height, 1000000000) //Collect utxo to pay for the fee of 10 ETP
-  let tx = await Metaverse.transaction_builder.issueAsset(result.utxo, recipient_address, symbol, max_supply, precision, issuer, description, 0,false, change_address, result.change,true,0,'testnet',null,undefined)
-  console.log(tx);
+  console.log(result.utxo)
 
+  let tx = await Metaverse.transaction_builder.issueAsset(result.utxo, recipient_address, symbol, max_supply, precision, issuer, description, 0,false, change_address, result.change,false,0,'testnet')
+  console.log(tx);
    tx = await wallet.sign(tx)
+   console.log(tx);
+
   tx = await tx.encode()
+  console.log(tx);
+
   tx = await tx.toString('hex')
+  console.log(tx);
+
   tx = await blockchain.transaction.broadcast(tx)
 
   console.log(tx);
diff --git a/tutorials/3-MITs/solution.js b/tutorials/3-MITs/solution.js
index 53e5675..0e2a624 100644
--- a/tutorials/3-MITs/solution.js
+++ b/tutorials/3-MITs/solution.js
@@ -30,7 +30,6 @@ async function initialize(){
                 // .then(tx=>tx.toString('hex'))
   console.log(tx)
 
-
   }
 
 

From ce96ef57ef90cfca25c5ce0f111715fcbcfb3e55 Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Tue, 29 Oct 2019 16:21:07 -0400
Subject: [PATCH 02/10] fixed Tutorial 2 solution

---
 examples/functions.js                      | 18 ++---
 tutorials/2-Avatars-and-MSTs/solution.html |  9 ++-
 tutorials/2-Avatars-and-MSTs/solution.js   | 92 ++++++++++++++++------
 tutorials/playground/index.html            | 11 +++
 tutorials/playground/testScript.js         | 15 ++++
 5 files changed, 109 insertions(+), 36 deletions(-)
 create mode 100644 tutorials/playground/index.html
 create mode 100644 tutorials/playground/testScript.js

diff --git a/examples/functions.js b/examples/functions.js
index 1d94aa5..33bef10 100644
--- a/examples/functions.js
+++ b/examples/functions.js
@@ -22,7 +22,7 @@ async function run(){
 
   console.log("Sending ETP..............")
   let amountToSend = 10000000
-  await sendETP(amountToSend)
+  //wait sendETP(amountToSend)
   console.log("ETP Sent")
 
   console.log("Depositing ETP............")
@@ -32,24 +32,24 @@ async function run(){
   console.log("ETP deposited")
 
   console.log("Registering Avatar............")
-  let avatarName = "testguy4"
+  let avatarName = "canfr"
   let avatarAddress = wallet.getAddress(2)
   //await registerAvatar(avatarName,avatarAddress)
   console.log("avatar " + avatarName + " Registered to " + avatarAddress)
 
   console.log("getting Avatar Info......")
 
-  let avatarInfo = await getAvatarInfo("Tal")
+  let avatarInfo = await getAvatarInfo("PEI")
   console.log(avatarInfo)
 
   console.log("Issuing MST.............")
-  let issuingAddress = wallet.getAddress(0),
-      symbol = 'COOOL',
+  let issuingAddress = wallet.getAddress(2),
+      symbol = 'AABBCCDD',
       max_supply = 100000,
       precision = 8,
-      issuer = 'testguy3',
+      issuer = 'cangr',
       description = 'cool asset is cool';
-  //await issueMST(issuingAddress,symbol,max_supply,precision,issuer,description)
+  await issueMST(issuingAddress,symbol,max_supply,precision,issuer,description)
 
   console.log("Transferring MST.............")
   var target = {
@@ -225,8 +225,8 @@ async function issueMIT(issuer_avatar,symbol,content){
     ETP: 10000
   };
 
-  let recipient_address =  wallet.getAddress(0)
-  let change_address = wallet.getAddress(0)
+  let recipient_address =  wallet.getAddress(2)
+  let change_address = wallet.getAddress(2)
 
   let height = await blockchain.height()
   let txs = await blockchain.addresses.txs(wallet.getAddresses())
diff --git a/tutorials/2-Avatars-and-MSTs/solution.html b/tutorials/2-Avatars-and-MSTs/solution.html
index ee70fd7..bf0f773 100644
--- a/tutorials/2-Avatars-and-MSTs/solution.html
+++ b/tutorials/2-Avatars-and-MSTs/solution.html
@@ -46,15 +46,18 @@ <h3> Balances </h3>
     <table id="MSTBalancesTable">
       <th>Symbol</th>
       <th>Amount</th>
+      <th>Decimals</th>
+
 
     </table>
 
     <h3> Send MST </h3>
 
-    <label>MST</lable><select id="MSTSelect"></select><br>
+    <label>MST</lable><select id="MSTSelect" ></select><br>
 
-    <input placeholder ="sendTo"></input><br>
-    <input placeholder = "amount"></input><br>
+    <input placeholder ="sendTo" id="sendTo"></input><br>
+    <input placeholder = "amount" id="amount"></input><br>
+    <button onclick = "sendMST()">Send</button>
 
 
   </body>
diff --git a/tutorials/2-Avatars-and-MSTs/solution.js b/tutorials/2-Avatars-and-MSTs/solution.js
index 4ac7921..f340e4c 100644
--- a/tutorials/2-Avatars-and-MSTs/solution.js
+++ b/tutorials/2-Avatars-and-MSTs/solution.js
@@ -1,9 +1,12 @@
-let mnemonic = "winter practice diagram kitten source man risk verify protect ship quick pistol brick runway penalty chest head purse device menu balance eight cube release"
+let mnemonic = "butter vacuum breeze glow virtual mutual veteran argue want pipe elite blast judge write sand toilet file joy exotic reflect truck topic receive wait"
 let wallet
 let addresses
 let blockchain
 let avatars
 
+let MSTsymbols
+let MSTInfo
+
 async function initialize(){
   blockchain = await Blockchain({url: "https://explorer-testnet.mvs.org/api/"})
   wallet  = await Metaverse.wallet.fromMnemonic(mnemonic,'testnet')
@@ -14,6 +17,8 @@ async function initialize(){
   await populateAddressSelect()
   await showAvatars()
   await populateAvatarSelect()
+  await showMSTBalances()
+  await populateMSTSelect()
 
 }
 
@@ -39,11 +44,12 @@ async function registerAvatar() {
     console.log(tx)
 }
 
+
 async function issueMST(){
 
   var symbol = document.getElementById("MSTSymbol").value
-  var max_supply = document.getElementById("MSTSupply").value
-  var precision = document.getElementById("MSTDecimals").value
+  var max_supply = parseInt(document.getElementById("MSTSupply").value)
+  var precision = parseInt(document.getElementById("MSTDecimals").value)
   var description = document.getElementById("MSTDescription").value
   var avatarSelect = document.getElementById('avatarSelect');
 
@@ -54,7 +60,7 @@ async function issueMST(){
   var recipient_address = issuingAddress;
   var change_address = issuingAddress;
 
-  console.log(issuingAddress)
+  console.log("issuingAddress " + issuingAddress)
   console.log("symbol " + symbol)
   console.log("max_supply " + max_supply)
   console.log("precision " + precision)
@@ -62,33 +68,22 @@ async function issueMST(){
   console.log("issuer " + issuer)
   console.log("description " + description)
 
-  var recipient_address = issuingAddress;
-  var change_address = issuingAddress;
-
   let height = await blockchain.height()
   console.log(issuingAddress)
 
   let txs = await blockchain.addresses.txs(wallet.getAddresses())
   let utxos = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses()) //Get all utxo
   let result = await Metaverse.output.findUtxo(utxos, {}, height, 1000000000) //Collect utxo to pay for the fee of 10 ETP
-  console.log(result.utxo)
-
-  let tx = await Metaverse.transaction_builder.issueAsset(result.utxo, recipient_address, symbol, max_supply, precision, issuer, description, 0,false, change_address, result.change,false,0,'testnet')
-  console.log(tx);
-   tx = await wallet.sign(tx)
-   console.log(tx);
-
+  let tx = await Metaverse.transaction_builder.issueAsset(result.utxo, recipient_address, symbol, max_supply, precision, issuer, description, 0,false, change_address, result.change,true,0,'testnet',null,undefined)
+  tx = await wallet.sign(tx)
   tx = await tx.encode()
-  console.log(tx);
-
   tx = await tx.toString('hex')
-  console.log(tx);
-
   tx = await blockchain.transaction.broadcast(tx)
 
   console.log(tx);
 }
 
+
 async function transferMST() {
   // let height = await blockchain.height()
   // let txs = await blockchain.addresses.txs(["tDZ5YMLJ3z6VbvAsX1c8oe9hJ2nND4jszz", "t85Hm2nYwQXrry2cVmEHPq8krRdJ7KYjmq"])
@@ -171,24 +166,45 @@ async function populateAvatarSelect() {
 }
 
 async function showMSTBalances() {
-  var balancesTable = document.getElementById("balancesTable");
-  let balances = await getMSTBalances(addresses)
+  var balancesTable = document.getElementById("MSTBalancesTable");
+  console.log(balancesTable)
+  let balanceData = await getMSTBalances(addresses)
+  console.log(balanceData)
+
+  MSTsymbols = Object.keys(balanceData.MST)
+  MSTInfo = Object.keys(balanceData.MST).map(i => balanceData.MST[i])
+
+  console.log(MSTsymbols)
+  console.log(MSTInfo)
+
 
-  for (i = 0; i < balances.length; ++i) {
+  for (i = 0; i < MSTInfo.length; ++i) {
 
     var row = balancesTable.insertRow(i+1);
 
     // Insert new cells (<td> elements) at the 1st and 2nd position of the "new" <tr> element:
     var cell1 = row.insertCell(0);
     var cell2 = row.insertCell(1);
+    var cell3 = row.insertCell(2);
+
 
     // Add some text to the new cells:
-    cell1.innerHTML = addresses[i];
-    cell2.innerHTML = await getETPBalance([addresses[i]]);
+    cell1.innerHTML = MSTsymbols[i];
+    cell2.innerHTML = MSTInfo[i].available;
+    cell3.innerHTML = MSTInfo[i].decimals;
+
   }
+}
 
-  document.getElementById('totalBalance').innerHTML = "Total ETP: " + await getETPBalance(addresses)
+async function populateMSTSelect() {
+  let MSTselect = document.getElementById('MSTSelect');
+  for (i = 0; i < MSTsymbols.length; ++i) {
+   var opt = document.createElement("option");
+   opt.value= MSTsymbols[i];
+   opt.innerHTML = MSTsymbols[i];
 
+   MSTselect.appendChild(opt);
+ }
 }
 
 async function getMSTBalances(addressArray){
@@ -206,3 +222,31 @@ async function getMSTBalances(addressArray){
 
   return balances
 }
+
+
+async function sendMST(){
+  let recipient_address = document.getElementById("sendTo").value
+  let amount = document.getElementById("amount").value
+  amount = parseInt(amount)
+  recipient_address = await getAvatar(recipient_address)
+
+  var MSTSelect = document.getElementById('MSTSelect');
+
+  let TargetSymbol = MSTsymbols[MSTSelect.selectedIndex]
+  console.log(TargetSymbol)
+
+  var target = {};
+  target[TargetSymbol] = amount
+  console.log(target)
+
+  change_address = wallet.getAddress(0)
+  let height = await blockchain.height()
+  let txs = await blockchain.addresses.txs(wallet.getAddresses())
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses()) //Get all utxo
+  let result = await Metaverse.output.findUtxo(utxos, target, height) //Collect utxo for given target
+  let tx = await Metaverse.transaction_builder.send(result.utxo, recipient_address, undefined, target, change_address, result.change)
+  tx = await wallet.sign(tx)
+  tx = await tx.encode()
+  tx = await blockchain.transaction.broadcast(tx.toString('hex'))
+  console.log(tx)
+}
diff --git a/tutorials/playground/index.html b/tutorials/playground/index.html
new file mode 100644
index 0000000..c4a101c
--- /dev/null
+++ b/tutorials/playground/index.html
@@ -0,0 +1,11 @@
+<html>
+  <head>
+    <script src = "metaverse.min.js"></script>
+<script src = "index.min.js"></script>
+    <meta charset="utf-8">
+    <title></title>
+  </head>
+  <body>
+
+  </body>
+</html>
diff --git a/tutorials/playground/testScript.js b/tutorials/playground/testScript.js
new file mode 100644
index 0000000..96a99ab
--- /dev/null
+++ b/tutorials/playground/testScript.js
@@ -0,0 +1,15 @@
+//import mvs-blockchain-js
+let blockchain = require('../../mvs-blockchain-js')({
+    url: "https://explorer-testnet.mvs.org/api/"
+});
+
+
+//import metaversjs
+let Metaverse = require('metaversejs');
+
+//make sure the libraries have been successfully imported
+
+console.log(blockchain)
+console.log("mvs-blockchain-js has been successfully imported!")
+console.log(Metaverse)
+console.log("Metaversjs has been successfully imported!")

From 280e7b35f4d9b32246fc028e1636ebe422403157 Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Tue, 29 Oct 2019 17:56:58 -0400
Subject: [PATCH 03/10] readme.md

---
 tutorials/2-Avatars-and-MSTs/README.md | 53 +++++++++++++++++---------
 1 file changed, 34 insertions(+), 19 deletions(-)

diff --git a/tutorials/2-Avatars-and-MSTs/README.md b/tutorials/2-Avatars-and-MSTs/README.md
index c4f05cc..00b2899 100644
--- a/tutorials/2-Avatars-and-MSTs/README.md
+++ b/tutorials/2-Avatars-and-MSTs/README.md
@@ -95,7 +95,8 @@ async function registerAvatar(avatar_name,avatar_address) {
 Create a function to look up an avatar address
 
 ```
-
+let avatarInfo = await blockchain.avatar.get(avatar)
+return avatarInfo.address
 ```
 
 
@@ -103,22 +104,25 @@ Create a function to issue an MST
 
 ```
 
-async function issueMST(issuer,symbol,max_supply,decimalPrecision,issuer,description){
-
-
+async function issueMST(issuer,symbol,max_supply,decimalPrecision,description){
 
-  var recipient_address = issuer;
-  var change_address = issuer;
+  let issuingAddress = await getAvatar(issuer)
+  var recipient_address = issuingAddress;
+  var change_address = issuingAddress;
 
+  let height = await blockchain.height()
+  console.log(issuingAddress)
 
-  let wallet = await Metaverse.wallet.fromMnemonic("lunar there win define minor shadow damage lounge bitter abstract sail alcohol yellow left lift vapor tourist rent gloom sustain gym dry congress zero")
   let txs = await blockchain.addresses.txs(wallet.getAddresses())
-  let utxos = await Metaverse.transaction_builder.calculateUtxo(txs.transactions, wallet.getAddresses()) //Get all utxo
-  let result = await Metaverse.transaction_builder.findUtxo(utxos, {}, Metaverse.transaction.ASSET_ISSUE_DEFAULT_FEE) //Collect utxo for given target
-  let tx = await Metaverse.transaction_builder.issue(result.utxo, recipient_address, symbol, max_supply, precision, issuer, description, change_address, result.change)
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses()) //Get all utxo
+  let result = await Metaverse.output.findUtxo(utxos, {}, height, 1000000000) //Collect utxo to pay for the fee of 10 ETP
+  let tx = await Metaverse.transaction_builder.issueAsset(result.utxo, recipient_address, symbol, max_supply, precision, issuer, description, 0,false, change_address, result.change,true,0,'testnet',null,undefined)
   tx = await wallet.sign(tx)
   tx = await tx.encode()
-  console.log(tx.toString('hex'));
+  tx = await tx.toString('hex')
+  tx = await blockchain.transaction.broadcast(tx)
+
+  console.log(tx);
 
 }
 
@@ -145,15 +149,26 @@ async function getBalances(){
 Create a function to transfer MST's
 
 ```
-async function transferMST() {
+async function transferMST(amount,recipient_address,MSTSymbol) {
+
+  amount = parseInt(amount)
+  recipient_address = await getAvatar(recipient_address)
+
+
+  var target = {};
+  target[MSTSymbol] = amount
+  console.log(target)
+
+  change_address = wallet.getAddress(0)
   let height = await blockchain.height()
-  let txs = await blockchain.addresses.txs(["tDZ5YMLJ3z6VbvAsX1c8oe9hJ2nND4jszz", "t85Hm2nYwQXrry2cVmEHPq8krRdJ7KYjmq"])
-  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, ["tDZ5YMLJ3z6VbvAsX1c8oe9hJ2nND4jszz", "t85Hm2nYwQXrry2cVmEHPq8krRdJ7KYjmq"])) //Get all utxo
-  let result = await Metaverse.output.findUtxo(utxos, target, height)) //Collect utxo for given target
-  let tx = await Metaverse.transaction_builder.send(result.utxo, recipient_address, undefined, target, change_address, result.change))
-  tx = await wallet.sign(tx))
-  tx = await tx.encode())
-  tx = await blockchain.transaction.broadcast(tx.toString('hex')))
+  let txs = await blockchain.addresses.txs(wallet.getAddresses())
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses()) //Get all utxo
+  let result = await Metaverse.output.findUtxo(utxos, target, height) //Collect utxo for given target
+  let tx = await Metaverse.transaction_builder.send(result.utxo, recipient_address, undefined, target, change_address, result.change)
+  tx = await wallet.sign(tx)
+  tx = await tx.encode()
+  tx = await blockchain.transaction.broadcast(tx.toString('hex'))
+  console.log(tx)
 
 }
 

From 5e6b53ae75346aff41b5aaf229fd337caffdd23f Mon Sep 17 00:00:00 2001
From: slax425 <murgornaftali@gmail.com>
Date: Fri, 1 Nov 2019 17:36:21 +0300
Subject: [PATCH 04/10] Docs retouch

---
 README.md                              | 28 +++++++++++++-------------
 tutorials/1-Metaverse-Wallet/README.md | 24 +++++++++++-----------
 tutorials/2-Avatars-and-MSTs/README.md | 14 ++++++-------
 tutorials/3-MITs/README.md             | 10 ++++-----
 4 files changed, 38 insertions(+), 38 deletions(-)

diff --git a/README.md b/README.md
index 2f313bc..04f45fe 100644
--- a/README.md
+++ b/README.md
@@ -5,30 +5,30 @@ This is a Metaverse Tutorial series
 
 This is a series of Metaverse tutorials. To begin clone this repository
 
-```
+```bash
 git clone https://github.com/antron3000/MetaverseTutorials.git
 
 ```
 
 navigate to the tutorial directory
 
-```
+```bash
 cd MetaverseTutorials
 ```
 
 update your repo to the latest version of mvs-blockchain-js
-```
+```bash
 git submodule update --init --recursive
 ```
 
 Install the metaverse npm package
 
-```
+```bash
 npm install metaversejs --save
 ```
 
 Install the mvs-blockchain-js npm package
-```
+```bash
 cd mvs-blockchain-js && npm install
 ```
 
@@ -65,7 +65,7 @@ Please follow the Environment setup instructions below before starting.
 
 Start by entering the "playground" directory. This is where you can build ALL your Metaverse apps during the tutorial.
 
-```
+```bash
 cd tutorials/playground
 ```
 
@@ -82,7 +82,7 @@ For use in nodejs scripts, import mvs-blockchain from the mvs-blockchain folder,
 
 Inside the testscript, add:
 
-```
+```javascript
 //import mvs-blockchain-js
 let blockchain = require('../../mvs-blockchain-js')({
     url: "https://explorer-testnet.mvs.org/api/"
@@ -102,20 +102,20 @@ console.log("Metaversjs has been successfully imported!")
 
 now run
 
-```
+```bash
 node testScript.js
 ```
 
 **Interact with metaverse via webapp**
 
 First create an html file
-```
+```bash
 touch index.html
 ```
 
 and add
 
-```
+```html
 <html>
   <head>
     <meta charset="utf-8">
@@ -131,25 +131,25 @@ and add
 
 To interact with webapps you must generate "index.js" from mvs-blockchain-js and "metaverse.min.js" from metaversejs. To generate these files you must clone each repository and simply run
 
-```
+```bash
 grunt
 ```
 
 This will generate javascript files into the /dist folder that you can import into your app.  You don't have to worry about this for now. We have generated these files and placed them in the playground folder. To include them in your webapp just add these script tags into your html page.
 
-```
+```html
 <script src = "metaverse.min.js"></script>
 <script src = "index.min.js"></script>
 ```
 
 Serve your webpage
-```
+```python
 python -m SimpleHTTPServer 4444
 ```
 
 To test that the libraries have been successfully imported into your webpage, open the web console and enter
 
-```
+```javascript
 blockchain = await Blockchain({url: "https://explorer-testnet.mvs.org/api/"})
 
 blockchain
diff --git a/tutorials/1-Metaverse-Wallet/README.md b/tutorials/1-Metaverse-Wallet/README.md
index df8debb..7b829b8 100644
--- a/tutorials/1-Metaverse-Wallet/README.md
+++ b/tutorials/1-Metaverse-Wallet/README.md
@@ -30,7 +30,7 @@ Note: Explicit detailed instructions are given to work with Metaverse, but not a
 
 Start by setting up a directory to work in
 
-```
+```bash
 cd MetaverseTutorials/tutorials/playground
 touch tut1.html
 touch tut1.js
@@ -40,8 +40,8 @@ Create front end
 
 Open tut1.html and use this HTML front end as the base of your app.
 
-```
-<<!DOCTYPE html>
+```html
+<!DOCTYPE html>
 <html lang="en" dir="ltr">
   <head>
     <meta charset="utf-8">
@@ -81,7 +81,7 @@ You should now be set up to use the Metaverse javascript libraries. We are using
 
 First lets define some key variables
 
-```
+```javascript
 var wallet        //An object representing your Metaverse Wallet
 var mnemonic      //A mnemonic code word used to generate your Wallet
 var addresses     //An array containing addresses belonging to the wallet
@@ -91,7 +91,7 @@ var balances      //A JSON object containing Wallet balances
 
 Start by creating a function to generate a new mnemonic
 
-```
+```javascript
 async function generateMnemonic(){
   mnemonic = await Metaverse.wallet.generateMnemonic()
 }
@@ -101,7 +101,7 @@ async function generateMnemonic(){
 And a function to create a Wallet from the mnemonic, using the testnet keyword since we're on the testnet.
 
 
-```
+```javascript
 async function createWallet(){
   wallet  = await Metaverse.wallet.fromMnemonic(mnemonic,'testnet')
 
@@ -112,7 +112,7 @@ Once you've created a wallet you must get some testnet ETP from the testnet fauc
 
 A function to get Wallet balances
 
-```
+```javascript
 async function getETPBalance(){
 
   //Get the lastest Blockchain Length
@@ -136,7 +136,7 @@ async function getETPBalance(){
 
 And Finally a function to send ETP
 
-```
+```javascript
 
 async function sendETP(amount){
 
@@ -191,7 +191,7 @@ var mnemonic = "van juice oak general lyrics gravity hammer shield over eager cr
 
 ```
 
-```
+```javascript
 run()
 
 async function run(){
@@ -217,20 +217,20 @@ You should see an ETP balance, and a transaction hash in your terminal. You can
 
 To interact with metaversejs in your webapp, you need to reference metaversejs in your HTML.
 
-```
+```html
 <script type="text/javascript" src="/dist/metaverse.min.js"></script>
 ```
 
 Also reference your tut1.js file.
 
-```
+```html
 <script type="text/javascript" src="tut1.js"></script>
 ```
 
 Next serve the webpage with
 
 
-```
+```python
 python -m SimpleHTTPServer 3333
 ```
 
diff --git a/tutorials/2-Avatars-and-MSTs/README.md b/tutorials/2-Avatars-and-MSTs/README.md
index c4f05cc..fcabe6a 100644
--- a/tutorials/2-Avatars-and-MSTs/README.md
+++ b/tutorials/2-Avatars-and-MSTs/README.md
@@ -27,7 +27,7 @@ Avatar certifications
 
 First lets create an html front end
 
-```
+```html
 <!DOCTYPE html>
 <html lang="en" dir="ltr">
   <head>
@@ -75,7 +75,7 @@ nodejs
 
 Create a function to register your avatar.
 
-```
+```javascript
 async function registerAvatar(avatar_name,avatar_address) {
 
     let change_address = avatar_address
@@ -101,7 +101,7 @@ Create a function to look up an avatar address
 
 Create a function to issue an MST
 
-```
+```javascript
 
 async function issueMST(issuer,symbol,max_supply,decimalPrecision,issuer,description){
 
@@ -126,7 +126,7 @@ async function issueMST(issuer,symbol,max_supply,decimalPrecision,issuer,descrip
 
 Create a function to get MST balance
 
-```
+```javascript
 
 async function getBalances(){
   let wallet = await Metaverse.wallet.fromMnemonic(mnemonic, 'testnet')
@@ -144,7 +144,7 @@ async function getBalances(){
 
 Create a function to transfer MST's
 
-```
+```javascript
 async function transferMST() {
   let height = await blockchain.height()
   let txs = await blockchain.addresses.txs(["tDZ5YMLJ3z6VbvAsX1c8oe9hJ2nND4jszz", "t85Hm2nYwQXrry2cVmEHPq8krRdJ7KYjmq"])
@@ -163,7 +163,7 @@ async function transferMST() {
 
 To interact with metaversejs in your webapp, you need to reference metaversejs in your HTML.
 
-```
+```html
 
 <script type="text/javascript" src="/dist/metaverse.min.js"></script>
 
@@ -171,7 +171,7 @@ To interact with metaversejs in your webapp, you need to reference metaversejs i
 
 Also reference your tut2.js file.
 
-```
+```html
 
 <script type="text/javascript" src="tut2.js"></script>
 
diff --git a/tutorials/3-MITs/README.md b/tutorials/3-MITs/README.md
index 93925d1..0d3490f 100644
--- a/tutorials/3-MITs/README.md
+++ b/tutorials/3-MITs/README.md
@@ -25,7 +25,7 @@ MIT's can be transferred between avatars. Only Avatars can issue MIT's
 
 First lets create an html front end
 
-```
+```html
 
 <!DOCTYPE html>
 <html lang="en" dir="ltr">
@@ -75,7 +75,7 @@ First lets create an html front end
 
 Create a function to issue an MIT
 
-```
+```javascript
 let address = wallet.getAddress(1)
 let address2 = wallet.getAddress(0)
 console.log(address)
@@ -96,7 +96,7 @@ console.log(tx)
 
 Create a function to Transfer an MIT
 
-```
+```javascript
 let wallet = await Metaverse.wallet.fromMnemonic(mnemonic, 'testnet')
 let address = wallet.getAddress(0)
 let height = await blockchain.height()
@@ -126,13 +126,13 @@ Integrate into your Dapp
 
 To interact with metaversejs in your webapp, you need to reference metaversejs in your HTML.
 
-```
+```html
 <script type="text/javascript" src="/dist/metaverse.min.js"></script>
 ```
 
 Also reference your tut3.js file.
 
-```
+```html
 <script type="text/javascript" src="tut3.js"></script>
 ```
 

From 581716b8c44fa900ae5f4094ab15b1fceacbd8e3 Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Fri, 8 Nov 2019 09:24:38 -0500
Subject: [PATCH 05/10] tutorial 1 & 3 fixes

---
 examples/functions.js                    | 39 ++++++++++++++----------
 examples/mit_transfer.js                 |  2 +-
 tutorials/1-Metaverse-Wallet/solution.js | 14 +++++----
 tutorials/2-Avatars-and-MSTs/solution.js |  4 ---
 tutorials/3-MITs/solution.html           |  8 ++---
 5 files changed, 35 insertions(+), 32 deletions(-)

diff --git a/examples/functions.js b/examples/functions.js
index 33bef10..92c16af 100644
--- a/examples/functions.js
+++ b/examples/functions.js
@@ -21,8 +21,8 @@ async function run(){
   console.log(balances)
 
   console.log("Sending ETP..............")
-  let amountToSend = 10000000
-  //wait sendETP(amountToSend)
+  let amountToSend = 10
+  await sendETP(amountToSend)
   console.log("ETP Sent")
 
   console.log("Depositing ETP............")
@@ -49,7 +49,7 @@ async function run(){
       precision = 8,
       issuer = 'cangr',
       description = 'cool asset is cool';
-  await issueMST(issuingAddress,symbol,max_supply,precision,issuer,description)
+  //await issueMST(issuingAddress,symbol,max_supply,precision,issuer,description)
 
   console.log("Transferring MST.............")
   var target = {
@@ -62,8 +62,8 @@ async function run(){
   console.log("Registering MIT................")
 
 
-  let MITsymbol = "testar7"
-  let avatar = "testguy3"
+  let MITsymbol = "sestMIT334"
+  let avatar = "cangr"
   let content = "some test content"
   //await issueMIT(avatar,MITsymbol,content)
 
@@ -72,10 +72,10 @@ async function run(){
 
   console.log("Transferring MIT................")
 
-  let MITToSend = "testar"
-  let sender_avatar = "testguy3"
+  let MITToSend = "sestMIT334"
+  let sender_avatar = "cangr"
   let recipient_avatar = "Tal"
-//  await sendMIT(sender_avatar,recipient_avatar,MITToSend)
+  //await sendMIT(sender_avatar,recipient_avatar,MITToSend)
 
 }
 
@@ -230,7 +230,7 @@ async function issueMIT(issuer_avatar,symbol,content){
 
   let height = await blockchain.height()
   let txs = await blockchain.addresses.txs(wallet.getAddresses())
-  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses()) //Get all utxo
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, [recipient_address]) //Get all utxo
   let result = await Metaverse.output.findUtxo(utxos, {}, height,10000) //Collect utxo to pay fee of 0.0001 ETP
   let tx = await Metaverse.transaction_builder.registerMIT(result.utxo, recipient_address, issuer_avatar, symbol, content, change_address, result.change)
   tx = await wallet.sign(tx)
@@ -243,21 +243,28 @@ async function issueMIT(issuer_avatar,symbol,content){
 
 async function sendMIT(sender_avatar,recipient_avatar,symbol){
 
-
-  let recipient_address = getAvatarAddress(recipient_avatar)
-  let change_address = getAvatarAddress(sender_avatar)
+  let recipient_address = await getAvatarAddress(recipient_avatar)
+  let sender_address = await getAvatarAddress(sender_avatar)
+  let change_address = sender_address
+  console.log(recipient_address)
+  console.log(symbol)
+  console.log(sender_address)
   let height = await blockchain.height()
   let txs = await blockchain.addresses.txs(wallet.getAddresses())
-  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses()) //Get all utxo
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, [sender_address]) //Get all utxo
+  //console.log(utxos)
+
+  console.log(wallet.getAddresses())
   let results = await Promise.all([
                     Metaverse.output.findUtxo(utxos, {}, height),
                     Metaverse.output.filter(utxos, {
-                        type: "mit"
+                        symbol: "sestMIT334"
                     })
                 ])
-  //console.log(results)
+  console.log(results)
   //console.log(results[0])
-  console.log(results[0].utxo.concat(results[1]))
+  console.log(  "sc7c")
+  //console.log(results[0].utxo.concat(results[1]))
   let tx = await Metaverse.transaction_builder.transferMIT(results[0].utxo.concat(results[1]), sender_avatar, recipient_address, recipient_avatar, symbol, change_address, results[0].change)
 
   tx = await wallet.sign(tx)
diff --git a/examples/mit_transfer.js b/examples/mit_transfer.js
index e02cbbc..2bc93d5 100644
--- a/examples/mit_transfer.js
+++ b/examples/mit_transfer.js
@@ -25,7 +25,7 @@ let results = await Promise.all([
                       type: "mit"
                   })
               ])
-let tx = await Metaverse.transaction_builder.transferMIT(results[0].utxo.concat(results[1]), "nova", recipient_address, recipient_avatar, "MIT_SUPERNOVA", change_address, results[0].change))
+let tx = await Metaverse.transaction_builder.transferMIT(results[0].utxo.concat(results[1]), "nova", recipient_address, recipient_avatar, "MIT_SUPERNOVA", change_address, results[0].change)
 tx = await wallet.sign(tx))
 tx = await tx.encode())
 tx = await blockchain.transaction.broadcast(tx.toString('hex')))
diff --git a/tutorials/1-Metaverse-Wallet/solution.js b/tutorials/1-Metaverse-Wallet/solution.js
index dcd4b63..364cffd 100644
--- a/tutorials/1-Metaverse-Wallet/solution.js
+++ b/tutorials/1-Metaverse-Wallet/solution.js
@@ -100,20 +100,22 @@ async function populateAddressSelect() {
 
 async function sendETP(){
 
-  let amount = document.getElementById("sendAmount").innerHTML
-  var target = {
-      ETP: amount
-  };
+  let amount = document.getElementById("sendAmount").value
 
-  var recipient_address = document.getElementById("sendTo").innerHTML;
 
+  var recipient_address = document.getElementById("sendTo").value;
+  recipient_address = recipient_address.toString()
+  amount = parseInt(amount)
   console.log(amount)
+  var target = {
+      ETP: amount
+  };
   console.log(recipient_address)
   let height = await blockchain.height()
   let txs = await blockchain.addresses.txs(addresses)
 
   //Get all utxo
-  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, wallet.getAddresses())
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, addresses)
 
   //Collect utxo for given target
   let result = await Metaverse.output.findUtxo(utxos, target, height)
diff --git a/tutorials/2-Avatars-and-MSTs/solution.js b/tutorials/2-Avatars-and-MSTs/solution.js
index f340e4c..4c9ad88 100644
--- a/tutorials/2-Avatars-and-MSTs/solution.js
+++ b/tutorials/2-Avatars-and-MSTs/solution.js
@@ -19,7 +19,6 @@ async function initialize(){
   await populateAvatarSelect()
   await showMSTBalances()
   await populateMSTSelect()
-
 }
 
 async function registerAvatar() {
@@ -95,8 +94,6 @@ async function transferMST() {
   // tx = await blockchain.transaction.broadcast(tx.toString('hex')))
 }
 
-
-
 async function showAvatar() {
   let avatar = document.getElementById("getAvatarInput").value
   console.log(avatar)
@@ -187,7 +184,6 @@ async function showMSTBalances() {
     var cell2 = row.insertCell(1);
     var cell3 = row.insertCell(2);
 
-
     // Add some text to the new cells:
     cell1.innerHTML = MSTsymbols[i];
     cell2.innerHTML = MSTInfo[i].available;
diff --git a/tutorials/3-MITs/solution.html b/tutorials/3-MITs/solution.html
index e51df3a..1f3b895 100644
--- a/tutorials/3-MITs/solution.html
+++ b/tutorials/3-MITs/solution.html
@@ -8,15 +8,16 @@
     <script src="solution.js"></script>
     <script> initialize()</script>
   </head>
-  <body>
+  <body onload="initialize()">
 
+  <body>
     <h3> Issue MIT </h3>
 
     <input placeholder = "MIT Symbol" ></input><br>
     <input placeholder = "Content" ></input><br>
     <select id="avatarSelect">Avatar</select><br>
     <label placeholder = "recipient Address" ></label>
-
+    <button>Issue</button>
 
     <h3> Display MITs</h3>
 
@@ -25,7 +26,6 @@ <h3> Display MITs</h3>
     <th>Symbol</th>
     <th>Content</th>
 
-
     <h3> Transfer MIT </h3>
 
     <select>MIT</select><br>
@@ -36,9 +36,7 @@ <h3> Verify File </h3>
 
     <label>upload</label><br>
     <select>MIT</select><br>
-
     <button>Verify</button>
 
-
   </body>
 </html>

From a7f1f7222a5c9d164cebcaaf29fde9d467a26fcc Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Fri, 8 Nov 2019 19:22:29 -0500
Subject: [PATCH 06/10] tut 3 solution.js

---
 tutorials/2-Avatars-and-MSTs/solution.html |   3 +-
 tutorials/3-MITs/solution.html             |  31 ++--
 tutorials/3-MITs/solution.js               | 172 +++++++++++++++++----
 3 files changed, 165 insertions(+), 41 deletions(-)

diff --git a/tutorials/2-Avatars-and-MSTs/solution.html b/tutorials/2-Avatars-and-MSTs/solution.html
index bf0f773..b999a40 100644
--- a/tutorials/2-Avatars-and-MSTs/solution.html
+++ b/tutorials/2-Avatars-and-MSTs/solution.html
@@ -6,7 +6,6 @@
     <script src="metaverse.min.js"></script>
     <script src="index.min.js"></script>
     <script src="solution.js"></script>
-
   </head>
   <body onload="initialize()">
 
@@ -32,7 +31,7 @@ <h3> Your Avatars </h3>
 
     <h3> Issue MST </h3>
 
-    <label>From Avatar</lable><select id="avatarSelect" ></select><br>
+    <label>From Avatar: </label><select id="avatarSelect" ></select><br>
 
     <input id="MSTSymbol" placeholder="symbol"></input> <br>
     <input id="MSTSupply" placeholder="max_supply"></input> <br>
diff --git a/tutorials/3-MITs/solution.html b/tutorials/3-MITs/solution.html
index 1f3b895..0d76789 100644
--- a/tutorials/3-MITs/solution.html
+++ b/tutorials/3-MITs/solution.html
@@ -4,33 +4,38 @@
     <meta charset="utf-8">
     <title></title>
     <script src="metaverse.min.js"></script>
-    <script src ="index.min.js"></script>
+    <script src="index.min.js"></script>
     <script src="solution.js"></script>
-    <script> initialize()</script>
   </head>
   <body onload="initialize()">
 
   <body>
     <h3> Issue MIT </h3>
 
-    <input placeholder = "MIT Symbol" ></input><br>
-    <input placeholder = "Content" ></input><br>
-    <select id="avatarSelect">Avatar</select><br>
+    <input id="MITSymbol" placeholder = "MIT Symbol" ></input><br>
+    <input id="MITContent" placeholder = "Content" ></input><br>
+    <label>Issuing Avatar: </label><select id="avatarSelect"></select><br>
     <label placeholder = "recipient Address" ></label>
-    <button>Issue</button>
+    <button onclick="issueMIT()">Issue</button>
 
     <h3> Display MITs</h3>
 
-    <th>MST</th>
-    <th>Issuer</th>
-    <th>Symbol</th>
-    <th>Content</th>
+
+    <table id="MITTable">
+      <th>Symbol</th>
+      <th>Content</th>
+      <th>Owner</th>
+      <th>Address</th>
+      <th>Status</th>
+
+    </table>
+
 
     <h3> Transfer MIT </h3>
 
-    <select>MIT</select><br>
-    <input>AVATAR</input><br>
-    <button>Send</button><br>
+    <label>MIT: </label><select id="MITSelect">MIT</select><br>
+    <input id="sendTo" placeholder = "send To...."></input><br>
+    <button onclick = "sendMIT()">Send</button><br>
 
     <h3> Verify File </h3>
 
diff --git a/tutorials/3-MITs/solution.js b/tutorials/3-MITs/solution.js
index 0e2a624..28b3a18 100644
--- a/tutorials/3-MITs/solution.js
+++ b/tutorials/3-MITs/solution.js
@@ -1,57 +1,177 @@
-let mnemonic = "van juice oak general lyrics gravity hammer shield over eager crew volume survey join lonely purchase kitten artwork mass cousin process mixture add knife"
+let mnemonic = "butter vacuum breeze glow virtual mutual veteran argue want pipe elite blast judge write sand toilet file joy exotic reflect truck topic receive wait"
 let wallet
 let addresses
+let blockchain
+let avatars
+
+let superfucks = "aaaa"
+
+let MITsymbols
+let MITData
 
 async function initialize(){
   blockchain = await Blockchain({url: "https://explorer-testnet.mvs.org/api/"})
   wallet  = await Metaverse.wallet.fromMnemonic(mnemonic,'testnet')
   addresses = await wallet.getAddresses()
+  avatars = new Array()
+  await getAvatars()
+  await populateAvatarSelect()
+  await showMITBalances()
+  await populateMITSelect()
 }
-  async function issueMIT(){
 
-  let wallet = await Metaverse.wallet.fromMnemonic(mnemonic, 'testnet')
-  wallet  = await Metaverse.wallet.fromMnemonic(mnemonic,'testnet')
 
-  let address = wallet.getAddress(1)
-  let address2 = wallet.getAddress(0)
-  console.log(address)
-  console.log(address2)
-  let recipient_address =  wallet.getAddress(1)
-  let change_address = wallet.getAddress(1)
+async function issueMIT(){
+
+  let symbol = document.getElementById("MITSymbol").value
+  let content = document.getElementById("MITContent").value
+  var target = {
+    ETP: 10000
+  };
+
+  let issuer_avatar = avatarSelect[avatarSelect.selectedIndex].value
+  console.log(issuer_avatar)
+  let issuingAddress = await getAvatar(issuer_avatar)
+  issuingAddress = issuingAddress.toString()
+  let recipient_address = issuingAddress;
+  let change_address = issuingAddress;
+
+
 
   let height = await blockchain.height()
-  let txs = await blockchain.addresses.txs([address])
-  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, [address]) //Get all utxo
-  let result = await Metaverse.output.findUtxo(utxos, target, height) //Collect utxo for given target
-  let tx = await Metaverse.transaction_builder.registerMIT(result.utxo, recipient_address, description, symbol, content, change_address, result.change)
+  let txs = await blockchain.addresses.txs(wallet.getAddresses())
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, [recipient_address]) //Get all utxo
+  let result = await Metaverse.output.findUtxo(utxos, {}, height,10000) //Collect utxo to pay fee of 0.0001 ETP
+  let tx = await Metaverse.transaction_builder.registerMIT(result.utxo, recipient_address, issuer_avatar, symbol, content, change_address, result.change)
   tx = await wallet.sign(tx)
   tx = await tx.encode()
   tx = await blockchain.transaction.broadcast(tx.toString('hex'))
                 // .then(tx=>tx.toString('hex'))
   console.log(tx)
 
-  }
+}
+
+async function sendMIT(){
+
+  let MITIndex = MITSelect[MITSelect.selectedIndex].value
+  console.log(MITIndex)
+
+  let symbol = MITData[MITIndex].symbol
+
+  let recipient_avatar = document.getElementById("sendTo").value
 
+  let recipient_address = await getAvatar(recipient_avatar)
 
-async function transferMIT(){
 
-  let wallet = await Metaverse.wallet.fromMnemonic(mnemonic, 'testnet')
-  let address = wallet.getAddress(0)
+
+  let sender_avatar = MITData[MITIndex].owner
+  let sender_address = await getAvatar(sender_avatar)
+  let change_address = sender_address;
+
+  console.log(recipient_address)
+  console.log(symbol)
+  console.log(sender_address)
   let height = await blockchain.height()
-  let txs = await blockchain.addresses.txs(address)
-  let utxos Metaverse.output.calculateUtxo(txs.transactions, [address])) //Get all utxo
+  let txs = await blockchain.addresses.txs(addresses)
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, [sender_address]) //Get all utxo
+  //console.log(utxos)
+
   let results = await Promise.all([
                     Metaverse.output.findUtxo(utxos, {}, height),
                     Metaverse.output.filter(utxos, {
-                        type: "mit"
+                        symbol: symbol
                     })
                 ])
-  let tx = await Metaverse.transaction_builder.transferMIT(results[0].utxo.concat(results[1]), "nova", recipient_address, recipient_avatar, "MIT_SUPERNOVA", change_address, results[0].change))
-  tx = await wallet.sign(tx))
-  tx = await tx.encode())
-  tx = await blockchain.transaction.broadcast(tx.toString('hex')))
-                // .then(tx=>tx.toString('hex'))
+
+  let tx = await Metaverse.transaction_builder.transferMIT(results[0].utxo.concat(results[1]), sender_avatar, recipient_address, recipient_avatar, symbol, change_address, results[0].change)
+
+  tx = await wallet.sign(tx)
+
+  tx = await tx.encode()
+
+  tx = await blockchain.transaction.broadcast(tx.toString('hex'))
+
   console.log(tx)
+}
+
+
+async function showMITBalances() {
+  var MITTable = document.getElementById("MITTable");
+  console.log(MITTable)
+  let balanceData = await getBalanceData(addresses)
+  MITData = balanceData.MIT
+  console.log(MITData)
+
+  for (i = 0; i < MITData.length; ++i) {
+    var row = MITTable.insertRow(i+1);
+
+    // Insert new cells (<td> elements) at the 1st and 2nd position of the "new" <tr> element:
+    var cell1 = row.insertCell(0);
+    var cell2 = row.insertCell(1);
+    var cell3 = row.insertCell(2);
+    var cell4 = row.insertCell(3);
+    var cell5 = row.insertCell(4);
+
+    // Add some text to the new cells:
+    cell1.innerHTML = MITData[i].symbol;
+    cell2.innerHTML = MITData[i].content;
+    cell3.innerHTML = MITData[i].owner;
+    cell4.innerHTML = MITData[i].address;
+    cell5.innerHTML = MITData[i].status;
+  }
+}
+
+async function populateMITSelect() {
+  let MITselect = document.getElementById('MITSelect');
+  for (i = 0; i < MITData.length; ++i) {
+   var opt = document.createElement("option");
+   opt.value= i;
+   opt.innerHTML = MITData[i].symbol;
+
+   MITselect.appendChild(opt);
+ }
+}
+
+async function getBalanceData(addressArray){
+  //Get the lastest Blockchain Length
+  let height = await blockchain.height()
+
+  //Get a list of wallet transactions
+  let txs = await blockchain.addresses.txs(addressArray)
+
+  //Get a list of unspent transaction outputs amongst your transactions
+  let utxo = await Metaverse.output.calculateUtxo(txs.transactions, addressArray)
+
+  //Calculate your balances based on the utxos
+  let balances = await blockchain.balance.all(utxo, addressArray, height)
+
+  return balances
+}
+
+async function populateAvatarSelect() {
+  let avatarSelect = document.getElementById('avatarSelect');
+  for (i = 0; i < avatars.length; ++i) {
+   var opt = document.createElement("option");
+   opt.value= avatars[i].symbol;
+   opt.innerHTML = avatars[i].symbol;
+
+   avatarSelect.appendChild(opt);
+ }
+}
+
+async function getAvatars() {
+  for (i = 0; i < addresses.length; ++i) {
+    console.log(i)
+   let avatarInfo = await blockchain.avatar.get(addresses[i])
+   if(avatarInfo!=null){
+     avatars.push(avatarInfo)
+   }
+ }
+}
+
+async function getAvatar(avatar) {
 
+  let avatarInfo = await blockchain.avatar.get(avatar)
+  return avatarInfo.address
 
 }

From a669865c9fad25da1ad6f7f49b3767e47801454e Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Fri, 8 Nov 2019 21:24:29 -0500
Subject: [PATCH 07/10] updated tutorial3 readme

---
 tutorials/3-MITs/README.md | 150 ++++++++++++++++++++++++-------------
 1 file changed, 100 insertions(+), 50 deletions(-)

diff --git a/tutorials/3-MITs/README.md b/tutorials/3-MITs/README.md
index 93925d1..4b7f91b 100644
--- a/tutorials/3-MITs/README.md
+++ b/tutorials/3-MITs/README.md
@@ -26,49 +26,55 @@ MIT's can be transferred between avatars. Only Avatars can issue MIT's
 First lets create an html front end
 
 ```
-
 <!DOCTYPE html>
 <html lang="en" dir="ltr">
   <head>
     <meta charset="utf-8">
     <title></title>
+
+
   </head>
-  <body>
+  <body onload="initialize()">
 
+  <body>
     <h3> Issue MIT </h3>
 
     <input placeholder = "MIT Symbol" ></input><br>
-    <input placeholder = "Content" ></input><br>
-    <select>Avatar</select><br>
+    <input  placeholder = "Content" ></input><br>
+    <label>Issuing Avatar: </label><select id="avatarSelect"></select><br>
     <label placeholder = "recipient Address" ></label>
-
+    <button >Issue</button>
 
     <h3> Display MITs</h3>
 
-    <th>MST</th>
-    <th>Issuer</th>
-    <th>Symbol</th>
-    <th>Content</th>
+
+    <table>
+      <th>Symbol</th>
+      <th>Content</th>
+      <th>Owner</th>
+      <th>Address</th>
+      <th>Status</th>
+
+    </table>
 
 
     <h3> Transfer MIT </h3>
 
-    <select>MIT</select><br>
-    <input>AVATAR</input><br>
+    <label>MIT: </label><select >MIT</select><br>
+    <inputplaceholder = "send To...."></input><br>
     <button>Send</button><br>
 
     <h3> Verify File </h3>
 
     <label>upload</label><br>
     <select>MIT</select><br>
-
     <button>Verify</button>
 
-
   </body>
 </html>
 
 
+
 ```
 
 ## NodeJS
@@ -76,48 +82,94 @@ First lets create an html front end
 Create a function to issue an MIT
 
 ```
-let address = wallet.getAddress(1)
-let address2 = wallet.getAddress(0)
-console.log(address)
-console.log(address2)
-let recipient_address =  wallet.getAddress(1)
-let change_address = wallet.getAddress(1)
-
-let height = await blockchain.height()
-let txs = await blockchain.addresses.txs([address])
-let utxos = await Metaverse.output.calculateUtxo(txs.transactions, [address]) //Get all utxo
-let result = await Metaverse.output.findUtxo(utxos, target, height) //Collect utxo for given target
-let tx = await Metaverse.transaction_builder.registerMIT(result.utxo, recipient_address, description, symbol, content, change_address, result.change)
-tx = await wallet.sign(tx)
-tx = await tx.encode()
-tx = await blockchain.transaction.broadcast(tx.toString('hex'))
-console.log(tx)
+async function issueMIT(symbol, content,issuer_avatar){
+
+  var target = {
+    ETP: 10000
+  };
+
+  let issuingAddress = await getAvatar(issuer_avatar)
+  issuingAddress = issuingAddress.toString()
+  let recipient_address = issuingAddress;
+  let change_address = issuingAddress;
+
+
+
+  let height = await blockchain.height()
+  let txs = await blockchain.addresses.txs(wallet.getAddresses())
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, [recipient_address]) //Get all utxo
+  let result = await Metaverse.output.findUtxo(utxos, {}, height,10000) //Collect utxo to pay fee of 0.0001 ETP
+  let tx = await Metaverse.transaction_builder.registerMIT(result.utxo, recipient_address, issuer_avatar, symbol, content, change_address, result.change)
+  tx = await wallet.sign(tx)
+  tx = await tx.encode()
+  tx = await blockchain.transaction.broadcast(tx.toString('hex'))
+                // .then(tx=>tx.toString('hex'))
+  console.log(tx)
+
+}
 ```
 
-Create a function to Transfer an MIT
+Create a function to get MIT Data. This will be a list of all MIT's owned by avatars in your mnemonic generated wallet
 
 ```
-let wallet = await Metaverse.wallet.fromMnemonic(mnemonic, 'testnet')
-let address = wallet.getAddress(0)
-let height = await blockchain.height()
-let txs = await blockchain.addresses.txs(address)
-let utxos Metaverse.output.calculateUtxo(txs.transactions, [address])) //Get all utxo
-let results = await Promise.all([
-                  Metaverse.output.findUtxo(utxos, {}, height),
-                  Metaverse.output.filter(utxos, {
-                      type: "mit"
-                  })
-              ])
-let tx = await Metaverse.transaction_builder.transferMIT(results[0].utxo.concat(results[1]), "nova", recipient_address, recipient_avatar, "MIT_SUPERNOVA", change_address, results[0].change))
-tx = await wallet.sign(tx))
-tx = await tx.encode())
-tx = await blockchain.transaction.broadcast(tx.toString('hex')))
-console.log(tx)
+async function getMITData(addressArray){
+  //Get the lastest Blockchain Length
+  let height = await blockchain.height()
+
+  //Get a list of wallet transactions
+  let txs = await blockchain.addresses.txs(addressArray)
+
+  //Get a list of unspent transaction outputs amongst your transactions
+  let utxo = await Metaverse.output.calculateUtxo(txs.transactions, addressArray)
+
+  //Calculate your balances based on the utxos
+  let balances = await blockchain.balance.all(utxo, addressArray, height)
+
+  let MITData = balances.MIT
+  return MITData
+}
 
 ```
+Create a function to Transfer an MIT
 
-Create a function to verify a MIT content hash
 ```
+async function sendMIT(symbol,MITIndex,recipient_avatar){
+
+
+  let symbol = MITData[MITIndex].symbol
+
+  let recipient_address = await getAvatar(recipient_avatar)
+
+  let sender_avatar = MITData[MITIndex].owner
+  let sender_address = await getAvatar(sender_avatar)
+  let change_address = sender_address;
+
+  console.log(recipient_address)
+  console.log(symbol)
+  console.log(sender_address)
+  let height = await blockchain.height()
+  let txs = await blockchain.addresses.txs(addresses)
+  let utxos = await Metaverse.output.calculateUtxo(txs.transactions, [sender_address]) //Get all utxo
+  //console.log(utxos)
+
+  let results = await Promise.all([
+                    Metaverse.output.findUtxo(utxos, {}, height),
+                    Metaverse.output.filter(utxos, {
+                        symbol: symbol
+                    })
+                ])
+
+  let tx = await Metaverse.transaction_builder.transferMIT(results[0].utxo.concat(results[1]), sender_avatar, recipient_address, recipient_avatar, symbol, change_address, results[0].change)
+
+  tx = await wallet.sign(tx)
+
+  tx = await tx.encode()
+
+  tx = await blockchain.transaction.broadcast(tx.toString('hex'))
+
+  console.log(tx)
+}
+
 ```
 
 
@@ -138,6 +190,4 @@ Also reference your tut3.js file.
 
 Verify that you have connected metaverse to the webapp by opening the browser console and typing "Metaverse". You should see the Metaverse object come up and look something like
 
-''' '''
-
-Next connect elements to the js functions and youre done!
+Next connect HTML elements to the js functions and youre done! This final step is left for you as an exercise. To see the solution see solution.html and solution.js

From 07becb88ceccc88544e70e6a900c17ce93e6ebc1 Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Mon, 18 Nov 2019 13:47:11 -0500
Subject: [PATCH 08/10] faucet

---
 tutorials/1-Metaverse-Wallet/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tutorials/1-Metaverse-Wallet/README.md b/tutorials/1-Metaverse-Wallet/README.md
index 703be5d..b4f2566 100644
--- a/tutorials/1-Metaverse-Wallet/README.md
+++ b/tutorials/1-Metaverse-Wallet/README.md
@@ -110,7 +110,7 @@ async function createWallet(){
   addresses = await wallet.getAddresses()  // get list of addresses
 }
 ```
-Once you've created a wallet you must get some testnet ETP from the testnet faucet.
+Once you've created a wallet you must get some testnet ETP from the [testnet faucet](https://free.mvs.org/.
 
 A function to get Wallet balances
 

From 8de641d437ccfeca97321b34f77e3bd659fafabf Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Mon, 18 Nov 2019 13:47:44 -0500
Subject: [PATCH 09/10] faucet

---
 tutorials/1-Metaverse-Wallet/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tutorials/1-Metaverse-Wallet/README.md b/tutorials/1-Metaverse-Wallet/README.md
index b4f2566..3e8e142 100644
--- a/tutorials/1-Metaverse-Wallet/README.md
+++ b/tutorials/1-Metaverse-Wallet/README.md
@@ -110,7 +110,7 @@ async function createWallet(){
   addresses = await wallet.getAddresses()  // get list of addresses
 }
 ```
-Once you've created a wallet you must get some testnet ETP from the [testnet faucet](https://free.mvs.org/.
+Once you've created a wallet you must get some testnet ETP from the [testnet faucet](https://free.mvs.org/).
 
 A function to get Wallet balances
 

From 9915c33a17e2c08eea7bf241132962fd87845b6f Mon Sep 17 00:00:00 2001
From: Antoine De Vuyst <fortyonepointsix@gmail.com>
Date: Mon, 18 Nov 2019 14:08:22 -0500
Subject: [PATCH 10/10] feedback fixes

---
 tutorials/1-Metaverse-Wallet/README.md   | 17 +++++----
 tutorials/1-Metaverse-Wallet/solution.js | 24 ++++++-------
 tutorials/2-Avatars-and-MSTs/README.md   | 13 ++++---
 tutorials/2-Avatars-and-MSTs/solution.js | 44 ++++++++++++------------
 tutorials/3-MITs/README.md               |  4 +--
 tutorials/3-MITs/solution.js             | 20 +++++------
 6 files changed, 60 insertions(+), 62 deletions(-)

diff --git a/tutorials/1-Metaverse-Wallet/README.md b/tutorials/1-Metaverse-Wallet/README.md
index 3e8e142..91c4c34 100644
--- a/tutorials/1-Metaverse-Wallet/README.md
+++ b/tutorials/1-Metaverse-Wallet/README.md
@@ -78,16 +78,15 @@ Open tut1.html and use this HTML front end as the base of your app.
 ```
 
 
-
 You should now be set up to use the Metaverse javascript libraries. We are using the async/await syntax. The await keyword can only be used in async functions so we will create async functions to perform all actions.
 
 First lets define some key variables
 
 ```javascript
-var wallet        //An object representing your Metaverse Wallet
-var mnemonic      //A mnemonic code word used to generate your Wallet
-var addresses     //An array containing addresses belonging to the wallet
-var balances      //A JSON object containing Wallet balances
+let wallet        //An object representing your Metaverse Wallet
+let mnemonic      //A mnemonic code word used to generate your Wallet
+let addresses     //An array containing addresses belonging to the wallet
+let balances      //A JSON object containing Wallet balances
 
 ```
 
@@ -144,12 +143,12 @@ async function sendETP(amount){
 
 //Define the amount of ETP you want to send
 //Measured in ETP units. There are 100 million units per ETP.
-  var target = {
+  let target = {
       ETP: 100000000 //100 million units = 1 ETP
   };
 
   //Define recipient
-  var recipient_address = "MVbtobP4m44AKsx5PqBbtrBUdycNHxM3eQ";
+   recipient_address = "MVbtobP4m44AKsx5PqBbtrBUdycNHxM3eQ";
 
   //Get latest blockchain length
   let height = await blockchain.height()
@@ -189,7 +188,7 @@ To test your nodejs code, Create a function called run() and make sure it gets e
 For now, since the metaverse faucet is not operational, use this mnemonic:
 
 ```
-var mnemonic = "van juice oak general lyrics gravity hammer shield over eager crew volume survey join lonely purchase kitten artwork mass cousin process mixture add knife"
+let mnemonic = "van juice oak general lyrics gravity hammer shield over eager crew volume survey join lonely purchase kitten artwork mass cousin process mixture add knife"
 
 ```
 
@@ -233,7 +232,7 @@ Next serve the webpage with
 
 
 ```python
-python -m SimpleHTTPServer 3333
+python -m SimpleHTTPServer 4444
 ```
 
 or however you prefer.
diff --git a/tutorials/1-Metaverse-Wallet/solution.js b/tutorials/1-Metaverse-Wallet/solution.js
index 364cffd..93ea8e7 100644
--- a/tutorials/1-Metaverse-Wallet/solution.js
+++ b/tutorials/1-Metaverse-Wallet/solution.js
@@ -3,12 +3,12 @@
 //     url: "https://explorer-testnet.mvs.org/api/"
 // });
 
-var wallet
-var mnemonic
-var addresses
-var balances
+let wallet
+let mnemonic
+let addresses
+let balances
 
-var hidden = true
+let hidden = true
 
 async function initialize(){
   blockchain = await Blockchain({url: "https://explorer-testnet.mvs.org/api/"})
@@ -39,15 +39,15 @@ async function importWallet() {
 
 async function showBalances(){
 
-  var balancesTable = document.getElementById("balancesTable");
+  let balancesTable = document.getElementById("balancesTable");
 
   for (i = 0; i < addresses.length; ++i) {
 
-    var row = balancesTable.insertRow(i+1);
+    let row = balancesTable.insertRow(i+1);
 
     // Insert new cells (<td> elements) at the 1st and 2nd position of the "new" <tr> element:
-    var cell1 = row.insertCell(0);
-    var cell2 = row.insertCell(1);
+    let cell1 = row.insertCell(0);
+    let cell2 = row.insertCell(1);
 
     // Add some text to the new cells:
     cell1.innerHTML = addresses[i];
@@ -90,7 +90,7 @@ async function populateAddressSelect() {
   addressSelect.appendChild(anyOption)
 
   for (i = 0; i < addresses.length; ++i) {
-   var opt = document.createElement("option");
+   let opt = document.createElement("option");
    opt.value= [addresses[i]];
    opt.innerHTML = addresses[i];
 
@@ -103,11 +103,11 @@ async function sendETP(){
   let amount = document.getElementById("sendAmount").value
 
 
-  var recipient_address = document.getElementById("sendTo").value;
+  let recipient_address = document.getElementById("sendTo").value;
   recipient_address = recipient_address.toString()
   amount = parseInt(amount)
   console.log(amount)
-  var target = {
+  let target = {
       ETP: amount
   };
   console.log(recipient_address)
diff --git a/tutorials/2-Avatars-and-MSTs/README.md b/tutorials/2-Avatars-and-MSTs/README.md
index 41e12f6..a6a0ca5 100644
--- a/tutorials/2-Avatars-and-MSTs/README.md
+++ b/tutorials/2-Avatars-and-MSTs/README.md
@@ -19,9 +19,7 @@ MST's and MIT's can only be issued by Avatars
 For more info: https://medium.com/metaverse-blockchain/metaverse-explained-avatars-57be355d42d4
 
 MST's are Metaverse Smart Tokens. MST is Metaverse's fungible token standard. MST's can be seen as subcurrencies on the Metaverse Blockchain.
-It costs 10 ETP to create an MST. MST's must be issued by an avatar.
-
-Avatar certifications
+It costs 10 ETP to create an MST. MST's must be issued by an avatar. MST SYMBOLS MUST BE ALL CAPS!
 
 ## Hands on Tutorial
 
@@ -100,15 +98,16 @@ return avatarInfo.address
 ```
 
 
-Create a function to issue an MST
+Create a function to issue an MST.
+
 
 ```javascript
 
 async function issueMST(issuer,symbol,max_supply,decimalPrecision,description){
 
   let issuingAddress = await getAvatar(issuer)
-  var recipient_address = issuingAddress;
-  var change_address = issuingAddress;
+  let recipient_address = issuingAddress;
+  let change_address = issuingAddress;
 
   let height = await blockchain.height()
   console.log(issuingAddress)
@@ -157,7 +156,7 @@ async function transferMST(amount,recipient_address,MSTSymbol) {
   recipient_address = await getAvatar(recipient_address)
 
 
-  var target = {};
+  let target = {};
   target[MSTSymbol] = amount
   console.log(target)
 
diff --git a/tutorials/2-Avatars-and-MSTs/solution.js b/tutorials/2-Avatars-and-MSTs/solution.js
index 4c9ad88..60ac2e6 100644
--- a/tutorials/2-Avatars-and-MSTs/solution.js
+++ b/tutorials/2-Avatars-and-MSTs/solution.js
@@ -25,7 +25,7 @@ async function registerAvatar() {
 
     let avatar_name = document.getElementById("avatarName").value
 
-    var addressSelect = document.getElementById('addressSelect');
+    let addressSelect = document.getElementById('addressSelect');
     let avatar_address = addressSelect[addressSelect.selectedIndex].value
     console.log(avatar_name)
     console.log(avatar_address)
@@ -46,18 +46,18 @@ async function registerAvatar() {
 
 async function issueMST(){
 
-  var symbol = document.getElementById("MSTSymbol").value
-  var max_supply = parseInt(document.getElementById("MSTSupply").value)
-  var precision = parseInt(document.getElementById("MSTDecimals").value)
-  var description = document.getElementById("MSTDescription").value
-  var avatarSelect = document.getElementById('avatarSelect');
+  let symbol = document.getElementById("MSTSymbol").value
+  let max_supply = parseInt(document.getElementById("MSTSupply").value)
+  let precision = parseInt(document.getElementById("MSTDecimals").value)
+  let description = document.getElementById("MSTDescription").value
+  let avatarSelect = document.getElementById('avatarSelect');
 
   let issuer = avatarSelect[avatarSelect.selectedIndex].value
   console.log(issuer)
   let issuingAddress = await getAvatar(issuer)
   issuingAddress = issuingAddress.toString()
-  var recipient_address = issuingAddress;
-  var change_address = issuingAddress;
+  let recipient_address = issuingAddress;
+  let change_address = issuingAddress;
 
   console.log("issuingAddress " + issuingAddress)
   console.log("symbol " + symbol)
@@ -111,7 +111,7 @@ async function getAvatar(avatar) {
 async function populateAddressSelect() {
   let addressSelect = document.getElementById('addressSelect');
   for (i = 0; i < addresses.length; ++i) {
-   var opt = document.createElement("option");
+   let opt = document.createElement("option");
    opt.value= [addresses[i]];
    opt.innerHTML = addresses[i];
 
@@ -130,7 +130,7 @@ async function getAvatars() {
 
 async function showAvatars() {
 
-  var avatarTable = document.getElementById("avatarsTable");
+  let avatarTable = document.getElementById("avatarsTable");
   for (let i = 0; i < avatars.length; ++i) {
      let avatarAddress = avatars[i].address
      let avatarSymbol = avatars[i].symbol
@@ -138,11 +138,11 @@ async function showAvatars() {
      //let issue_tx_link = document.createElement("div")
      //issue_tx_link.innerText = "Issuance tx"
      //issue_tx_link.setAttribute("href", "https://explorer-testnet.mvs.org/tx/" + issue_tx)
-     var row = avatarTable.insertRow(i+1);
+     let row = avatarTable.insertRow(i+1);
 
      // Insert new cells (<td> elements) at the 1st and 2nd position of the "new" <tr> element:
-     var cell1 = row.insertCell(0);
-     var cell2 = row.insertCell(1);
+     let cell1 = row.insertCell(0);
+     let cell2 = row.insertCell(1);
 
      // Add some text to the new cells:
      cell1.innerHTML = avatarSymbol;
@@ -154,7 +154,7 @@ async function showAvatars() {
 async function populateAvatarSelect() {
   let avatarSelect = document.getElementById('avatarSelect');
   for (i = 0; i < avatars.length; ++i) {
-   var opt = document.createElement("option");
+   let opt = document.createElement("option");
    opt.value= avatars[i].symbol;
    opt.innerHTML = avatars[i].symbol;
 
@@ -163,7 +163,7 @@ async function populateAvatarSelect() {
 }
 
 async function showMSTBalances() {
-  var balancesTable = document.getElementById("MSTBalancesTable");
+  let balancesTable = document.getElementById("MSTBalancesTable");
   console.log(balancesTable)
   let balanceData = await getMSTBalances(addresses)
   console.log(balanceData)
@@ -177,12 +177,12 @@ async function showMSTBalances() {
 
   for (i = 0; i < MSTInfo.length; ++i) {
 
-    var row = balancesTable.insertRow(i+1);
+    let row = balancesTable.insertRow(i+1);
 
     // Insert new cells (<td> elements) at the 1st and 2nd position of the "new" <tr> element:
-    var cell1 = row.insertCell(0);
-    var cell2 = row.insertCell(1);
-    var cell3 = row.insertCell(2);
+    let cell1 = row.insertCell(0);
+    let cell2 = row.insertCell(1);
+    let cell3 = row.insertCell(2);
 
     // Add some text to the new cells:
     cell1.innerHTML = MSTsymbols[i];
@@ -195,7 +195,7 @@ async function showMSTBalances() {
 async function populateMSTSelect() {
   let MSTselect = document.getElementById('MSTSelect');
   for (i = 0; i < MSTsymbols.length; ++i) {
-   var opt = document.createElement("option");
+   let opt = document.createElement("option");
    opt.value= MSTsymbols[i];
    opt.innerHTML = MSTsymbols[i];
 
@@ -226,12 +226,12 @@ async function sendMST(){
   amount = parseInt(amount)
   recipient_address = await getAvatar(recipient_address)
 
-  var MSTSelect = document.getElementById('MSTSelect');
+  let MSTSelect = document.getElementById('MSTSelect');
 
   let TargetSymbol = MSTsymbols[MSTSelect.selectedIndex]
   console.log(TargetSymbol)
 
-  var target = {};
+  let target = {};
   target[TargetSymbol] = amount
   console.log(target)
 
diff --git a/tutorials/3-MITs/README.md b/tutorials/3-MITs/README.md
index bcf3355..b2bd8f5 100644
--- a/tutorials/3-MITs/README.md
+++ b/tutorials/3-MITs/README.md
@@ -86,7 +86,7 @@ Create a function to issue an MIT
 
 async function issueMIT(symbol, content,issuer_avatar){
 
-  var target = {
+  let target = {
     ETP: 10000
   };
 
@@ -105,7 +105,7 @@ async function issueMIT(symbol, content,issuer_avatar){
   tx = await wallet.sign(tx)
   tx = await tx.encode()
   tx = await blockchain.transaction.broadcast(tx.toString('hex'))
-                // .then(tx=>tx.toString('hex'))
+                
   console.log(tx)
 
 }
diff --git a/tutorials/3-MITs/solution.js b/tutorials/3-MITs/solution.js
index 28b3a18..3542fa8 100644
--- a/tutorials/3-MITs/solution.js
+++ b/tutorials/3-MITs/solution.js
@@ -25,7 +25,7 @@ async function issueMIT(){
 
   let symbol = document.getElementById("MITSymbol").value
   let content = document.getElementById("MITContent").value
-  var target = {
+  let target = {
     ETP: 10000
   };
 
@@ -96,21 +96,21 @@ async function sendMIT(){
 
 
 async function showMITBalances() {
-  var MITTable = document.getElementById("MITTable");
+  let MITTable = document.getElementById("MITTable");
   console.log(MITTable)
   let balanceData = await getBalanceData(addresses)
   MITData = balanceData.MIT
   console.log(MITData)
 
   for (i = 0; i < MITData.length; ++i) {
-    var row = MITTable.insertRow(i+1);
+    let row = MITTable.insertRow(i+1);
 
     // Insert new cells (<td> elements) at the 1st and 2nd position of the "new" <tr> element:
-    var cell1 = row.insertCell(0);
-    var cell2 = row.insertCell(1);
-    var cell3 = row.insertCell(2);
-    var cell4 = row.insertCell(3);
-    var cell5 = row.insertCell(4);
+    let cell1 = row.insertCell(0);
+    let cell2 = row.insertCell(1);
+    let cell3 = row.insertCell(2);
+    let cell4 = row.insertCell(3);
+    let cell5 = row.insertCell(4);
 
     // Add some text to the new cells:
     cell1.innerHTML = MITData[i].symbol;
@@ -124,7 +124,7 @@ async function showMITBalances() {
 async function populateMITSelect() {
   let MITselect = document.getElementById('MITSelect');
   for (i = 0; i < MITData.length; ++i) {
-   var opt = document.createElement("option");
+   let opt = document.createElement("option");
    opt.value= i;
    opt.innerHTML = MITData[i].symbol;
 
@@ -151,7 +151,7 @@ async function getBalanceData(addressArray){
 async function populateAvatarSelect() {
   let avatarSelect = document.getElementById('avatarSelect');
   for (i = 0; i < avatars.length; ++i) {
-   var opt = document.createElement("option");
+   let opt = document.createElement("option");
    opt.value= avatars[i].symbol;
    opt.innerHTML = avatars[i].symbol;