diff --git a/README.md b/README.md
new file mode 100644
index 0000000..388590f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# miksi-app
+
+miksi-core can be found at https://github.com/arnaucube/miksi-core
diff --git a/circuits-files/deposit-proving_key.bin b/circuits-files/deposit-proving_key.bin
index 556f10b..bcd7dbf 100644
Binary files a/circuits-files/deposit-proving_key.bin and b/circuits-files/deposit-proving_key.bin differ
diff --git a/circuits-files/deposit.wasm b/circuits-files/deposit.wasm
index ef7a680..3c6880f 100644
Binary files a/circuits-files/deposit.wasm and b/circuits-files/deposit.wasm differ
diff --git a/circuits-files/withdraw-proving_key.bin b/circuits-files/withdraw-proving_key.bin
index fa3c193..2e784a8 100644
Binary files a/circuits-files/withdraw-proving_key.bin and b/circuits-files/withdraw-proving_key.bin differ
diff --git a/circuits-files/withdraw.wasm b/circuits-files/withdraw.wasm
index 53510cf..985fc6a 100644
Binary files a/circuits-files/withdraw.wasm and b/circuits-files/withdraw.wasm differ
diff --git a/index.html b/index.html
index 411e5c1..d57c643 100644
--- a/index.html
+++ b/index.html
@@ -27,7 +27,7 @@
 
 <body class="dark-theme">
   <br>
-  <a target="_blank" href="https://github.com/miksi-labs/miksi-app" class="github-corner" aria-label="View source on GitHub"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#fff; color:#151513; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
+  <a target="_blank" href="https://github.com/arnaucube/miksi-app" class="github-corner" aria-label="View source on GitHub"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#fff; color:#151513; position: absolute; top: 0; border: 0; right: 0;" aria-hidden="true"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
 
   <div id="wallet-maincard" class="card mainBox">
     <!-- menu -->
@@ -98,7 +98,7 @@
 
           <h5><i class="fa fa-info" aria-hidden="true"></i> Info</h5>
           <hr>
-          Spec & core code: <a href="https://github.com/miksi-labs/miksi-core" target="_blank">https://github.com/miksi-labs/miksi-core</a>
+          Spec & core code: <a href="https://github.com/arnaucube/miksi-core" target="_blank">https://github.com/arnaucube/miksi-core</a>
           <br>
           What is a <a href="https://en.wikipedia.org/wiki/Cryptocurrency_tumbler" target="_blank">mixer</a>?
           <br><br><br>
@@ -121,8 +121,9 @@
 
 
   <!-- <script src="node_modules/jquery/dist/jquery.min.js"></script> -->
-  <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
-  <!-- <script src="node_modules/toastr/build/toastr.min.js"></script> -->
+  <!-- <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script> -->
+  <script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
+  <!-- [> <script src="node_modules/toastr/build/toastr.min.js"></script> <] -->
   <script src="https://cdnjs.cloudflare.com/ajax/libs/toastr.js/latest/js/toastr.min.js"></script>
 
   <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js"
diff --git a/index.js b/index.js
index 4c16872..b79aee9 100644
--- a/index.js
+++ b/index.js
@@ -1,8 +1,9 @@
 var circuit = {};
 var provingKey = {};
 var witnessCalc = {};
-const abi = JSON.parse(`[{"inputs":[{"internalType":"address","name":"_depositVerifierContractAddr","type":"address"},{"internalType":"address","name":"_withdrawVerifierContractAddr","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"_commitment","type":"uint256"},{"internalType":"uint256","name":"_root","type":"uint256"},{"internalType":"uint256[2]","name":"a","type":"uint256[2]"},{"internalType":"uint256[2][2]","name":"b","type":"uint256[2][2]"},{"internalType":"uint256[2]","name":"c","type":"uint256[2]"}],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"getCommitments","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"_address","type":"address"},{"internalType":"uint256","name":"nullifier","type":"uint256"},{"internalType":"uint256[2]","name":"a","type":"uint256[2]"},{"internalType":"uint256[2][2]","name":"b","type":"uint256[2][2]"},{"internalType":"uint256[2]","name":"c","type":"uint256[2]"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]`);
-const miksiAddress = "0x29DB549Ea98d41e0F28A5aA50ED1D37d62BA8C4B";
+const abi = JSON.parse(`[{"inputs":[{"internalType":"address","name":"_depositVerifierContractAddr","type":"address"},{"internalType":"address","name":"_withdrawVerifierContractAddr","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"_commitment","type":"uint256"},{"internalType":"uint256","name":"_root","type":"uint256"},{"internalType":"uint256[2]","name":"a","type":"uint256[2]"},{"internalType":"uint256[2][2]","name":"b","type":"uint256[2][2]"},{"internalType":"uint256[2]","name":"c","type":"uint256[2]"}],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"getCommitments","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"_address","type":"address"},{"internalType":"uint256","name":"nullifier","type":"uint256"},{"internalType":"uint256[2]","name":"a","type":"uint256[2]"},{"internalType":"uint256[2][2]","name":"b","type":"uint256[2][2]"},{"internalType":"uint256[2]","name":"c","type":"uint256[2]"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]`);
+const miksiAddress = "0x3a88725bf9ABc85Dca64A4e6bc629D448032FA0F";
+let metamask = false;
 
 function loadCircuit(circuitname) {
   fetch("circuits-files/"+circuitname+"-proving_key.bin").then( (response) => {
@@ -22,6 +23,10 @@ function loadCircuit(circuitname) {
 }
 
 async function deposit(circuitname) {
+  if (!metamask) {
+    toastr.error("Please install/connect Metamask");
+    return;
+  }
   document.getElementById("depositRes").innerHTML = `
     Generating zkProof & making the deposit
   `;
@@ -30,17 +35,18 @@ async function deposit(circuitname) {
   // TODO
   const secret = miksi.randBigInt().toString();
   const nullifier = miksi.randBigInt().toString();
-  // const secret = "1234567890";
-  // const nullifier = "5678901234";
+
   let res = await miksiContract.methods.getCommitments().call();
   console.log("res", res);
   const commitments = res[0];
+  const key = res[2];
   console.log("commitments", commitments);
+  console.log("key", key);
   // getCommitments from the tree
 
   // calculate witness
   console.log(witnessCalc[circuitname]);
-  const cw = await miksi.calcDepositWitness(witnessCalc[circuitname], secret, nullifier, commitments);
+  const cw = await miksi.calcDepositWitness(witnessCalc[circuitname], secret, nullifier, commitments, key);
   const witness = cw.witness;
   const publicInputs = cw.publicInputs;
   console.log("w", witness);
@@ -90,7 +96,8 @@ async function deposit(circuitname) {
   // print secret & nullifier
   let jw = {
     secret: secret,
-    nullifier: nullifier
+    nullifier: nullifier,
+    key: key
   };
   console.log("jw", JSON.stringify(jw));
   document.getElementById("depositRes").innerHTML = `
@@ -101,6 +108,10 @@ async function deposit(circuitname) {
 }
 
 async function withdraw(circuitname) {
+  if (!metamask) {
+    toastr.error("Please install/connect Metamask");
+    return;
+  }
   document.getElementById("withdrawRes").innerHTML = `
     Generating zkProof & making the withdraw
   `;
@@ -108,6 +119,7 @@ async function withdraw(circuitname) {
   const jw = JSON.parse(document.getElementById("jsonWithdraw").value);
   const secret = jw.secret;
   const nullifier = jw.nullifier;
+  const key = jw.key;
   console.log(secret, nullifier);
   const commitment = miksi.calcCommitment(secret, nullifier);
 
@@ -121,7 +133,7 @@ async function withdraw(circuitname) {
   console.log(witnessCalc[circuitname]);
   const proverAccounts = await web3.eth.getAccounts();
   const addr = proverAccounts[0];
-  const cw = await miksi.calcWithdrawWitness(witnessCalc[circuitname], secret, nullifier, commitments, addr);
+  const cw = await miksi.calcWithdrawWitness(witnessCalc[circuitname], secret, nullifier, commitments, addr, key);
   const witness = cw.witness;
   const publicInputs = cw.publicInputs;
   console.log("w", witness);
@@ -192,12 +204,16 @@ async function connectMetamask() {
   }
 
   if (!ethEnabled()) {
+    toastr.warning("Please install Metamask to use miksi");
     alert("Please install MetaMask to use miksi");
+  } else {
+    metamask = true;
   }
 
   console.log("abi", abi);
   miksiContract = new web3.eth.Contract(abi, miksiAddress);
   console.log("miksiContract", miksiContract);
+  toastr.info("Metamask connected. Miksi contract: ", miksiAddress);
 
   const acc = await web3.eth.getAccounts();
   const addr = acc[0];
diff --git a/libs/miksi-browser.js b/libs/miksi-browser.js
index cdcaeac..5d0d70e 100644
--- a/libs/miksi-browser.js
+++ b/libs/miksi-browser.js
@@ -61,7 +61,7 @@ module.exports={
   "_args": [
     [
       "@web3-js/websocket@1.0.30",
-      "/home/user/git/miksi/miksi-core"
+      "/home/nicebox/miksi/miksi-core"
     ]
   ],
   "_from": "@web3-js/websocket@1.0.30",
@@ -86,7 +86,7 @@ module.exports={
   ],
   "_resolved": "https://registry.npmjs.org/@web3-js/websocket/-/websocket-1.0.30.tgz",
   "_spec": "1.0.30",
-  "_where": "/home/user/git/miksi/miksi-core",
+  "_where": "/home/nicebox/miksi/miksi-core",
   "author": {
     "name": "Brian McKelvey",
     "email": "theturtle32@gmail.com",
@@ -27405,7 +27405,7 @@ module.exports={
   "_args": [
     [
       "elliptic@6.5.2",
-      "/home/user/git/miksi/miksi-core"
+      "/home/nicebox/miksi/miksi-core"
     ]
   ],
   "_from": "elliptic@6.5.2",
@@ -27434,7 +27434,7 @@ module.exports={
   ],
   "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.2.tgz",
   "_spec": "6.5.2",
-  "_where": "/home/user/git/miksi/miksi-core",
+  "_where": "/home/nicebox/miksi/miksi-core",
   "author": {
     "name": "Fedor Indutny",
     "email": "fedor@indutny.com"
@@ -75059,7 +75059,7 @@ module.exports={
   "_args": [
     [
       "web3@1.2.7",
-      "/home/user/git/miksi/miksi-core"
+      "/home/nicebox/miksi/miksi-core"
     ]
   ],
   "_from": "web3@1.2.7",
@@ -75084,7 +75084,7 @@ module.exports={
   ],
   "_resolved": "https://registry.npmjs.org/web3/-/web3-1.2.7.tgz",
   "_spec": "1.2.7",
-  "_where": "/home/user/git/miksi/miksi-core",
+  "_where": "/home/nicebox/miksi/miksi-core",
   "author": {
     "name": "ethereum.org"
   },
@@ -76310,25 +76310,28 @@ exports.calcCommitment = (secret, nullifier) => {
 	return commitment;
 };
 
-exports.calcDepositWitness = async (wasm, secret, nullifier, commitments) => {
+exports.calcDepositWitness = async (wasm, secret, nullifier, commitments, key) => {
 	const poseidon = circomlib.poseidon.createHash(6, 8, 57);
 	const commitment = poseidon([coinCode, amount, secret, nullifier]).toString();
 
 	// rebuild the tree
 	let tree = await smt.newMemEmptyTrie();
-	await tree.insert(1, 0);
+	await tree.insert(0, 0);
 	for (let i=0; i<commitments.length; i++) {
-		await tree.insert(commitments[i], 0);
+		await tree.insert(i+1, commitments[i]);
 	}
 
 	// old root
 	const rootOld = tree.root;
 	const resOld = await tree.find(commitment);
 	let oldKey = "0";
+	let oldValue = "0";
 	if (!resOld.found) {
 		oldKey = resOld.notFoundKey.toString();
+		oldValue = resOld.notFoundValue.toString();
 	}
 	console.log("oldKey", oldKey);
+	console.log("oldValue", oldValue);
 	// if (resOld.found) {
 	//         console.error("leaf expect to not exist but exists");
 	// }
@@ -76337,13 +76340,13 @@ exports.calcDepositWitness = async (wasm, secret, nullifier, commitments) => {
 		siblingsOld.push("0");
 	};
 
-	await tree.insert(commitment, 0);
+	await tree.insert(key, commitment);
 
 	// new root
 	const rootNew = tree.root;
-	const resNew = await tree.find(commitment);
+	const resNew = await tree.find(key);
 	if (!resNew.found) {
-		console.error("leaf expect to exist but not exists");
+		console.error("leaf with the new commitment expect to exist but not exists");
 	}
 	let siblingsNew = resNew.siblings;
 	while (siblingsNew.length < nLevels) {
@@ -76357,11 +76360,13 @@ exports.calcDepositWitness = async (wasm, secret, nullifier, commitments) => {
 		"secret": secret,
 		"nullifier": nullifier,
 		"oldKey": oldKey,
+		"oldValue": oldValue,
 		"siblingsOld": siblingsOld,
 		"siblingsNew": siblingsNew,
 		"rootOld": rootOld,
 		"rootNew": rootNew,
-		"commitment": commitment
+		"commitment": commitment,
+		"key": key
 	});
 	console.log("input", input);
 	// const options = {};
@@ -76394,23 +76399,23 @@ exports.calcDepositWitness = async (wasm, secret, nullifier, commitments) => {
 	};
 }
 
-exports.calcWithdrawWitness = async (wasm, secret, nullifier, commitments, addr) => {
+exports.calcWithdrawWitness = async (wasm, secret, nullifier, commitments, addr, key) => {
 	const poseidon = circomlib.poseidon.createHash(6, 8, 57);
 	const commitment = poseidon([coinCode, amount, secret, nullifier]).toString();
 
 	// rebuild the tree
 	let tree = await smt.newMemEmptyTrie();
-	await tree.insert(1, 0);
+	await tree.insert(0, 0);
 	for (let i=0; i<commitments.length; i++) {
-		await tree.insert(commitments[i], 0);
+		await tree.insert(i+1, commitments[i]);
 	}
 	// await tree.insert(commitment, 0);
 
 	// root
 	const root = tree.root;
-	const res = await tree.find(commitment);
+	const res = await tree.find(key);
 	if (!res.found) {
-		console.error("leaf expect to exist but not exists");
+		console.error("leaf expect to exist but not exists, key:", key);
 	}
 	let siblings = res.siblings;
 	while (siblings.length < nLevels) {
@@ -76425,7 +76430,8 @@ exports.calcWithdrawWitness = async (wasm, secret, nullifier, commitments, addr)
 		"nullifier": nullifier,
 		"siblings": siblings,
 		"root": root,
-		"address": addr
+		"address": addr,
+		"key": key
 	});
 	console.log("input", input);
 	// const options = {};
