diff --git a/examples/rln-js/src/app/home/components/Blockchain.tsx b/examples/rln-js/src/app/home/components/Blockchain.tsx
index 979bb44..83c7d21 100644
--- a/examples/rln-js/src/app/home/components/Blockchain.tsx
+++ b/examples/rln-js/src/app/home/components/Blockchain.tsx
@@ -21,9 +21,7 @@ export const Blockchain: React.FunctionComponent<{}> = () => {
 
       <Block type={BlockTypes.FlexHorizontal}>
         <p>Latest membership ID on contract</p>
-        <code>
-          {lastMembershipID === -1 ? "Not loaded yet" : lastMembershipID}
-        </code>
+        <code>{lastMembershipID || "Not loaded yet"}</code>
       </Block>
     </Block>
   );
diff --git a/examples/rln-js/src/app/home/components/Keystore.tsx b/examples/rln-js/src/app/home/components/Keystore.tsx
index 5463c3f..a82dc65 100644
--- a/examples/rln-js/src/app/home/components/Keystore.tsx
+++ b/examples/rln-js/src/app/home/components/Keystore.tsx
@@ -1,13 +1,13 @@
 import React from "react";
 import { Block, BlockTypes } from "@/components/Block";
 import { Button } from "@/components/Button";
-import { Status } from "@/components/Status";
 import { Subtitle } from "@/components/Subtitle";
 import { useStore, useWallet } from "@/hooks";
 
 export const Keystore: React.FunctionComponent<{}> = () => {
-  const { keystoreStatus, keystoreCredentials } = useStore();
-  const { onGenerateCredentials } = useWallet();
+  const { keystorePassword, setKeystorePassword, keystoreCredentials } =
+    useStore();
+  const { onGenerateCredentials, onRegisterCredentials } = useWallet();
 
   const credentialsNodes = React.useMemo(
     () =>
@@ -19,6 +19,13 @@ export const Keystore: React.FunctionComponent<{}> = () => {
     [keystoreCredentials]
   );
 
+  const onPasswordChanged = React.useCallback(
+    (event: React.FormEvent<HTMLInputElement>) => {
+      setKeystorePassword(event.currentTarget.value);
+    },
+    [setKeystorePassword]
+  );
+
   return (
     <Block className="mt-10">
       <Block type={BlockTypes.FlexHorizontal}>
@@ -29,8 +36,6 @@ export const Keystore: React.FunctionComponent<{}> = () => {
         </div>
       </Block>
 
-      <Status text="Keystore status" mark={keystoreStatus} />
-
       <Block className="mt-4">
         <label
           htmlFor="keystore-input"
@@ -41,6 +46,8 @@ export const Keystore: React.FunctionComponent<{}> = () => {
         <input
           type="text"
           id="keystore-input"
+          value={keystorePassword || ""}
+          onChange={onPasswordChanged}
           className="bg-gray-50 border border-gray-300 text-gray-900 text-sm w-full rounded-lg focus:ring-blue-500 focus:border-blue-500 block p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500"
         />
       </Block>
@@ -50,7 +57,9 @@ export const Keystore: React.FunctionComponent<{}> = () => {
         <Button onClick={onGenerateCredentials}>
           Generate new credentials
         </Button>
-        <Button className="ml-5">Register credentials</Button>
+        <Button className="ml-5" onClick={onRegisterCredentials}>
+          Register credentials
+        </Button>
       </Block>
 
       <Block className="mt-4">
diff --git a/examples/rln-js/src/app/home/components/KeystoreDetails.tsx b/examples/rln-js/src/app/home/components/KeystoreDetails.tsx
index 5e478c6..2c340e8 100644
--- a/examples/rln-js/src/app/home/components/KeystoreDetails.tsx
+++ b/examples/rln-js/src/app/home/components/KeystoreDetails.tsx
@@ -3,18 +3,18 @@ import { useStore } from "@/hooks";
 import { bytesToHex } from "@waku/utils/bytes";
 
 export const KeystoreDetails: React.FunctionComponent<{}> = () => {
-  const { credentials } = useStore();
+  const { credentials, activeCredential, activeMembershipID } = useStore();
 
   return (
     <Block className="mt-5">
       <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
         <p>Keystore hash</p>
-        <code>none</code>
+        <code>{activeCredential || "none"}</code>
       </Block>
 
       <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
         <p>Membership ID</p>
-        <code>none</code>
+        <code>{activeMembershipID || "none"}</code>
       </Block>
 
       <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
diff --git a/examples/rln-js/src/app/home/page.tsx b/examples/rln-js/src/app/home/page.tsx
index 1d15f14..88ac030 100644
--- a/examples/rln-js/src/app/home/page.tsx
+++ b/examples/rln-js/src/app/home/page.tsx
@@ -7,9 +7,6 @@ import { KeystoreDetails } from "./components/KeystoreDetails";
 import { useRLN } from "@/hooks";
 
 export default function Home() {
-  const { rln } = useRLN();
-  console.log(rln);
-
   return (
     <main className="flex min-h-screen flex-col p-24 font-mono max-w-screen-lg m-auto">
       <Header />
diff --git a/examples/rln-js/src/hooks/useRLN.ts b/examples/rln-js/src/hooks/useRLN.ts
index a928c86..98322b3 100644
--- a/examples/rln-js/src/hooks/useRLN.ts
+++ b/examples/rln-js/src/hooks/useRLN.ts
@@ -1,3 +1,4 @@
+"use client";
 import React from "react";
 import { rln, RLN, RLNEventsNames } from "@/services/rln";
 import { useStore } from "./useStore";
@@ -7,38 +8,39 @@ type RLNResult = {
 };
 
 export const useRLN = (): RLNResult => {
-  const { setAppStatus, setKeystoreStatus } = useStore();
+  const { setAppStatus, setKeystoreCredentials } = useStore();
   const rlnRef = React.useRef<undefined | RLN>(undefined);
 
   React.useEffect(() => {
-    if (rlnRef.current) {
+    if (rlnRef.current || !rln) {
       return;
     }
 
     let terminate = false;
+
     const statusListener = (event: CustomEvent) => {
       setAppStatus(event?.detail);
     };
-    const keystoreListener = (event: CustomEvent) => {
-      setKeystoreStatus(event?.detail);
-    };
-
     rln.addEventListener(RLNEventsNames.Status, statusListener);
+
+    const keystoreListener = (event: CustomEvent) => {
+      setKeystoreCredentials(event?.detail || []);
+    };
     rln.addEventListener(RLNEventsNames.Keystore, keystoreListener);
 
     const run = async () => {
       if (terminate) {
         return;
       }
-      await rln.init();
+      await rln?.init();
       rlnRef.current = rln;
     };
 
     run();
     return () => {
       terminate = true;
-      rln.removeEventListener(RLNEventsNames.Status, statusListener);
-      rln.removeEventListener(RLNEventsNames.Keystore, keystoreListener);
+      rln?.removeEventListener(RLNEventsNames.Status, statusListener);
+      rln?.removeEventListener(RLNEventsNames.Keystore, keystoreListener);
     };
   }, [rlnRef, setAppStatus]);
 
diff --git a/examples/rln-js/src/hooks/useStore.ts b/examples/rln-js/src/hooks/useStore.ts
index d43cd55..98e59bd 100644
--- a/examples/rln-js/src/hooks/useStore.ts
+++ b/examples/rln-js/src/hooks/useStore.ts
@@ -6,19 +6,21 @@ type StoreResult = {
   setAppStatus: (v: string) => void;
   ethAccount: string;
   setEthAccount: (v: string) => void;
-  chainID: number;
+  chainID: undefined | number;
   setChainID: (v: number) => void;
-  lastMembershipID: number;
+  lastMembershipID: undefined | number;
   setLastMembershipID: (v: number) => void;
   credentials: undefined | IdentityCredential;
   setCredentials: (v: undefined | IdentityCredential) => void;
 
-  keystoreStatus: string;
-  setKeystoreStatus: (v: string) => void;
+  keystorePassword: undefined | string;
+  setKeystorePassword: (v: string) => void;
   activeCredential: string;
   keystoreCredentials: string[];
   setKeystoreCredentials: (v: string[]) => void;
   setActiveCredential: (v: string) => void;
+  activeMembershipID: undefined | number;
+  setActiveMembershipID: (v: number) => void;
 
   wakuStatus: string;
   setWakuStatus: (v: string) => void;
@@ -33,9 +35,9 @@ export const useStore = create<StoreResult>((set) => {
 
     ethAccount: "",
     setEthAccount: (v: string) => set((state) => ({ ...state, ethAccount: v })),
-    chainID: -1,
+    chainID: undefined,
     setChainID: (v: number) => set((state) => ({ ...state, chainID: v })),
-    lastMembershipID: -1,
+    lastMembershipID: undefined,
     setLastMembershipID: (v: number) =>
       set((state) => ({ ...state, lastMembershipID: v })),
     credentials: undefined,
@@ -50,15 +52,18 @@ export const useStore = create<StoreResult>((set) => {
   };
 
   const keystoreModule = {
-    keystoreStatus: DEFAULT_VALUE,
-    setKeystoreStatus: (v: string) =>
-      set((state) => ({ ...state, keystoreStatus: v })),
+    keystorePassword: undefined,
+    setKeystorePassword: (v: string) =>
+      set((state) => ({ ...state, keystorePassword: v })),
     activeCredential: DEFAULT_VALUE,
-    keystoreCredentials: [], // ["277026D55D6F3988FB4E4695F1DCA2F59B012581A854FEE6035EE1566F898908", "59FDF2A610545099326E736269EA2E297BCA0B2BA4D68D245130BF10F9FFAC43", "FC98D3EDD1CCB2AA4C25CCDDD18ADADC8C4BBA9BA11B9F652B2E5E9732D531D3"],
     setActiveCredential: (v: string) =>
       set((state) => ({ ...state, activeCredential: v })),
+    keystoreCredentials: [],
     setKeystoreCredentials: (v: string[]) =>
       set((state) => ({ ...state, keystoreCredentials: v })),
+    activeMembershipID: undefined,
+    setActiveMembershipID: (v: number) =>
+      set((state) => ({ ...state, activeMembershipID: v })),
   };
 
   return {
diff --git a/examples/rln-js/src/hooks/useWallet.ts b/examples/rln-js/src/hooks/useWallet.ts
index c90aa59..656b9cb 100644
--- a/examples/rln-js/src/hooks/useWallet.ts
+++ b/examples/rln-js/src/hooks/useWallet.ts
@@ -3,15 +3,27 @@ import { useStore } from "./useStore";
 import { isEthereumEvenEmitterValid } from "@/utils/ethereum";
 import { useRLN } from "./useRLN";
 import { SIGNATURE_MESSAGE } from "@/constants";
+import { SEPOLIA_CONTRACT } from "@waku/rln";
+import { StatusEventPayload } from "@/services/rln";
 
 type UseWalletResult = {
   onConnectWallet: () => void;
   onGenerateCredentials: () => void;
+  onRegisterCredentials: () => void;
 };
 
 export const useWallet = (): UseWalletResult => {
   const { rln } = useRLN();
-  const { setEthAccount, setChainID, setCredentials } = useStore();
+  const {
+    keystorePassword,
+    credentials,
+    setEthAccount,
+    setChainID,
+    setCredentials,
+    setActiveCredential,
+    setActiveMembershipID,
+    setAppStatus,
+  } = useStore();
 
   React.useEffect(() => {
     const ethereum = window.ethereum;
@@ -69,9 +81,48 @@ export const useWallet = (): UseWalletResult => {
     setCredentials(credentials);
   }, [rln, setCredentials]);
 
+  const onRegisterCredentials = React.useCallback(async () => {
+    if (!credentials || !rln?.rlnContract || !keystorePassword) {
+      return;
+    }
+
+    try {
+      setAppStatus(StatusEventPayload.CREDENTIALS_REGISTERING);
+      const membershipInfo = await rln.rlnContract.registerWithKey(credentials);
+      const membershipID = membershipInfo!.index.toNumber();
+      const keystoreHash = await rln.keystore.addCredential(
+        {
+          membership: {
+            treeIndex: membershipID,
+            chainId: SEPOLIA_CONTRACT.chainId,
+            address: SEPOLIA_CONTRACT.address,
+          },
+          identity: credentials,
+        },
+        keystorePassword
+      );
+      setActiveCredential(keystoreHash);
+      setActiveMembershipID(membershipID);
+      rln.saveKeystore();
+      setAppStatus(StatusEventPayload.CREDENTIALS_REGISTERED);
+    } catch (error) {
+      setAppStatus(StatusEventPayload.CREDENTIALS_FAILURE);
+      console.error("Failed to register to RLN Contract: ", error);
+      return;
+    }
+  }, [
+    credentials,
+    rln,
+    keystorePassword,
+    setActiveCredential,
+    setActiveMembershipID,
+    setAppStatus,
+  ]);
+
   return {
     onConnectWallet,
     onGenerateCredentials,
+    onRegisterCredentials,
   };
 };
 
diff --git a/examples/rln-js/src/services/rln.ts b/examples/rln-js/src/services/rln.ts
index 628a957..79aa66b 100644
--- a/examples/rln-js/src/services/rln.ts
+++ b/examples/rln-js/src/services/rln.ts
@@ -12,10 +12,10 @@ import { isBrowserProviderValid } from "@/utils/ethereum";
 
 export enum RLNEventsNames {
   Status = "status",
-  Keystore = "keystore",
+  Keystore = "keystore-changed",
 }
 
-enum StatusEventPayload {
+export enum StatusEventPayload {
   WASM_LOADING = "WASM Blob download in progress...",
   WASM_FAILED = "Failed to download WASM, check console",
   CONTRACT_LOADING = "Connecting to RLN contract",
@@ -23,11 +23,15 @@ enum StatusEventPayload {
   RLN_INITIALIZED = "RLN dependencies initialized",
   KEYSTORE_LOCAL = "Keystore initialized from localStore",
   KEYSTORE_NEW = "New Keystore was initialized",
+  CREDENTIALS_REGISTERING = "Registering credentials...",
+  CREDENTIALS_REGISTERED = "Registered credentials",
+  CREDENTIALS_FAILURE = "Failed to register credentials, check console",
 }
 
 type EventListener = (event: CustomEvent) => void;
 
 type IRLN = {
+  saveKeystore: () => void;
   addEventListener: (name: RLNEventsNames, fn: EventListener) => void;
   removeEventListener: (name: RLNEventsNames, fn: EventListener) => void;
 };
@@ -38,7 +42,7 @@ export class RLN implements IRLN {
 
   public rlnInstance: undefined | RLNInstance;
   public rlnContract: undefined | RLNContract;
-  public keystore: undefined | Keystore;
+  public readonly keystore: Keystore;
 
   private initialized = false;
   private initializing = false;
@@ -52,6 +56,7 @@ export class RLN implements IRLN {
       );
     }
     this.ethProvider = new ethers.providers.Web3Provider(ethereum, "any");
+    this.keystore = this.initKeystore();
   }
 
   public async init(): Promise<void> {
@@ -65,7 +70,8 @@ export class RLN implements IRLN {
 
     this.emitStatusEvent(StatusEventPayload.RLN_INITIALIZED);
 
-    this.initKeystore();
+    // emit keystore keys once app is ready
+    this.emitKeystoreKeys();
 
     this.initialized = true;
     this.initializing = false;
@@ -100,17 +106,11 @@ export class RLN implements IRLN {
     }
   }
 
-  private initKeystore(): void {
+  private initKeystore(): Keystore {
     const localKeystoreString = localStorage.getItem("keystore");
     const _keystore = Keystore.fromString(localKeystoreString || "");
 
-    if (localKeystoreString) {
-      this.emitKeystoreStatusEvent(StatusEventPayload.KEYSTORE_LOCAL);
-    } else {
-      this.emitKeystoreStatusEvent(StatusEventPayload.KEYSTORE_NEW);
-    }
-
-    this.keystore = _keystore || Keystore.create();
+    return _keystore || Keystore.create();
   }
 
   public addEventListener(name: RLNEventsNames, fn: EventListener) {
@@ -127,11 +127,17 @@ export class RLN implements IRLN {
     );
   }
 
-  private emitKeystoreStatusEvent(payload: StatusEventPayload) {
+  private emitKeystoreKeys() {
+    const credentials = Object.keys(this.keystore.toObject().credentials || {});
     this.emitter.dispatchEvent(
-      new CustomEvent(RLNEventsNames.Keystore, { detail: payload })
+      new CustomEvent(RLNEventsNames.Keystore, { detail: credentials })
     );
   }
+
+  public async saveKeystore() {
+    localStorage.setItem("keystore", this.keystore.toString());
+    this.emitKeystoreKeys();
+  }
 }
 
-export const rln = new RLN();
+export const rln = typeof window === "undefined" ? undefined : new RLN();