diff --git a/packages/status-js/protos/communities.ts b/packages/status-js/protos/communities.ts
index 2053888..3eb498b 100644
--- a/packages/status-js/protos/communities.ts
+++ b/packages/status-js/protos/communities.ts
@@ -114,13 +114,12 @@ export namespace CommunityPermissions {
 
 export interface CommunityDescription {
   clock: bigint
-  members: CommunityMember
+  members: Record<string, CommunityMember>
   permissions: CommunityPermissions
   identity: ChatIdentity
-  // fixme!: Map
-  chats: CommunityChat
+  chats: Record<string, CommunityChat>
   banList: string[]
-  categories: CommunityCategory
+  categories: Record<string, CommunityCategory>
   archiveMagnetlinkClock: bigint
   adminSettings: CommunityAdminSettings
 }
diff --git a/packages/status-js/src/client/community/community.ts b/packages/status-js/src/client/community/community.ts
index 706b7d4..b0348c9 100644
--- a/packages/status-js/src/client/community/community.ts
+++ b/packages/status-js/src/client/community/community.ts
@@ -2,10 +2,12 @@ import { waku_message } from 'js-waku'
 
 import { MessageType } from '~/protos/enums'
 import { getDifferenceByKeys } from '~/src/helpers/get-difference-by-keys'
+import { getObjectsDifference } from '~/src/helpers/get-objects-difference'
 
 import { idToContentTopic } from '../../contentTopic'
 import { createSymKeyFromPassword } from '../../encryption'
 import { Chat } from '../chat'
+import { Member } from '../member'
 
 import type { Client } from '../../client'
 import type {
@@ -21,6 +23,7 @@ export class Community {
   private symmetricKey!: Uint8Array
   public description!: CommunityDescription
   public chats: Map<string, Chat>
+  #members: Map<string, Member>
   public callback: ((description: CommunityDescription) => void) | undefined
 
   constructor(client: Client, publicKey: string) {
@@ -28,6 +31,7 @@ export class Community {
     this.publicKey = publicKey
 
     this.chats = new Map()
+    this.#members = new Map()
   }
 
   public async start() {
@@ -52,6 +56,7 @@ export class Community {
     this.description = description
 
     this.observe()
+    this.addMembers(this.description.members)
 
     // Chats
     await this.observeChatMessages(this.description.chats)
@@ -62,6 +67,18 @@ export class Community {
     return [...this.chats.values()]
   }
 
+  public getChat(uuid: string) {
+    return this.chats.get(uuid)
+  }
+
+  public get members() {
+    return [...this.#members.values()]
+  }
+
+  public getMember(publicKey: string) {
+    return this.#members.get(publicKey)
+  }
+
   public fetch = async () => {
     await this.client.waku.store.queryHistory([this.contentTopic], {
       // oldest message first
@@ -137,6 +154,19 @@ export class Community {
     )
   }
 
+  private addMembers = (members: CommunityDescription['members']) => {
+    for (const publicKey of Object.keys(members)) {
+      const member = new Member(publicKey)
+      this.#members.set(publicKey, member)
+    }
+  }
+
+  private removeMembers = (ids: string[]) => {
+    for (const id of ids) {
+      this.#members.delete(id)
+    }
+  }
+
   public handleDescription = (description: CommunityDescription) => {
     if (this.description) {
       // already handled
@@ -161,6 +191,23 @@ export class Community {
       if (Object.keys(addedChats).length) {
         this.observeChatMessages(addedChats)
       }
+
+      // TODO: migrate chats to new format
+      // const chats = getObjectsDifference(
+      //   this.description.chats,
+      //   description.chats
+      // )
+
+      // this.observeChatMessages(chats.added)
+      // this.unobserveChatMessages(chats.removed)
+
+      const members = getObjectsDifference(
+        this.description.members,
+        description.members
+      )
+
+      this.addMembers(members.added)
+      this.removeMembers(members.removed)
     }
 
     // Community
diff --git a/packages/status-js/src/client/member.ts b/packages/status-js/src/client/member.ts
new file mode 100644
index 0000000..7406da2
--- /dev/null
+++ b/packages/status-js/src/client/member.ts
@@ -0,0 +1,17 @@
+import { generateUsername } from '../utils/generate-username'
+import { publicKeyToColorHash } from '../utils/public-key-to-color-hash'
+
+import type { ColorHash } from '../utils/public-key-to-color-hash'
+
+export class Member {
+  publicKey: string
+  username: string
+  colorHash: ColorHash
+
+  constructor(publicKey: string) {
+    this.publicKey = publicKey
+    this.username = generateUsername(publicKey)
+    // TODO: can it fail?
+    this.colorHash = publicKeyToColorHash(publicKey)!
+  }
+}
diff --git a/packages/status-js/src/helpers/get-objects-difference.test.ts b/packages/status-js/src/helpers/get-objects-difference.test.ts
new file mode 100644
index 0000000..14246c9
--- /dev/null
+++ b/packages/status-js/src/helpers/get-objects-difference.test.ts
@@ -0,0 +1,25 @@
+import { getObjectsDifference } from './get-objects-difference'
+
+describe('getObjectsDifference', () => {
+  it('returns correct difference', () => {
+    const oldObject = { a: 1, b: 2, c: 3 }
+    const newObject = { c: 3, d: 4, e: 5 }
+
+    expect(getObjectsDifference(oldObject, newObject)).toEqual({
+      added: {
+        d: 4,
+        e: 5,
+      },
+      removed: ['a', 'b'],
+    })
+  })
+
+  it('returns empty arrays for the same object', () => {
+    const object = { a: 1, b: 2, c: 3 }
+
+    expect(getObjectsDifference(object, object)).toEqual({
+      added: {},
+      removed: [],
+    })
+  })
+})
diff --git a/packages/status-js/src/helpers/get-objects-difference.ts b/packages/status-js/src/helpers/get-objects-difference.ts
new file mode 100644
index 0000000..9437cca
--- /dev/null
+++ b/packages/status-js/src/helpers/get-objects-difference.ts
@@ -0,0 +1,23 @@
+type Input<Value> = Record<string, Value>
+
+export function getObjectsDifference<Value>(
+  oldObject: Input<Value>,
+  newObject: Input<Value>
+) {
+  const added: Record<string, Value> = {}
+  const removed: string[] = []
+
+  for (const key of Object.keys(oldObject)) {
+    if (!newObject[key]) {
+      removed.push(key)
+    }
+  }
+
+  for (const key of Object.keys(newObject)) {
+    if (!oldObject[key]) {
+      added[key] = newObject[key]
+    }
+  }
+
+  return { added, removed }
+}
diff --git a/packages/status-js/src/index.ts b/packages/status-js/src/index.ts
index 19e0eee..9bc4a3f 100644
--- a/packages/status-js/src/index.ts
+++ b/packages/status-js/src/index.ts
@@ -3,3 +3,4 @@ export type { Client, ClientOptions } from './client'
 export { createClient } from './client'
 export type { ChatMessage as Message } from './client/chat'
 export type { Community } from './client/community/community'
+export type { Member } from './client/member'
diff --git a/packages/status-js/src/utils/public-key-to-color-hash.ts b/packages/status-js/src/utils/public-key-to-color-hash.ts
index 3aac05c..2b162ac 100644
--- a/packages/status-js/src/utils/public-key-to-color-hash.ts
+++ b/packages/status-js/src/utils/public-key-to-color-hash.ts
@@ -1,6 +1,6 @@
 import * as secp256k1 from 'ethereum-cryptography/secp256k1'
 
-type ColorHash = number[][]
+export type ColorHash = number[][]
 
 const COLOR_HASH_COLORS_COUNT = 32
 const COLOR_HASH_SEGMENT_MAX_LENGTH = 5
diff --git a/packages/status-react/src/components/member-sidebar/index.tsx b/packages/status-react/src/components/member-sidebar/index.tsx
index 209139e..415250f 100644
--- a/packages/status-react/src/components/member-sidebar/index.tsx
+++ b/packages/status-react/src/components/member-sidebar/index.tsx
@@ -9,8 +9,8 @@ import { MemberItem } from './member-item'
 import { UserItem } from './user-item'
 
 export function MemberSidebar() {
-  const members = useMembers()
   const { account } = useAccount()
+  const members = useMembers()
 
   return (
     <Wrapper>
@@ -26,14 +26,12 @@ export function MemberSidebar() {
         <MemberGroup label="Online">
           {members.map(member => (
             <MemberItem
-              key={member}
+              key={member.publicKey}
               verified={false}
               untrustworthy={false}
-              indicator="online"
-              chatKey={member}
-            >
-              {member}
-            </MemberItem>
+              // indicator=""
+              member={member}
+            />
           ))}
         </MemberGroup>
         {/* <MemberGroup label="Offline"></MemberGroup> */}
diff --git a/packages/status-react/src/components/member-sidebar/member-item.tsx b/packages/status-react/src/components/member-sidebar/member-item.tsx
index 9aa3ab0..814a25b 100644
--- a/packages/status-react/src/components/member-sidebar/member-item.tsx
+++ b/packages/status-react/src/components/member-sidebar/member-item.tsx
@@ -2,26 +2,27 @@ import React from 'react'
 
 import { Avatar, EthAddress, Flex, Text } from '~/src/system'
 
+import type { Member } from '~/src/protocol'
 import type { AvatarProps } from '~/src/system/avatar'
 
 interface Props {
-  children: string
-  chatKey: string
   verified: boolean
   untrustworthy: boolean
   indicator?: AvatarProps['indicator']
+  member: Member
 }
 
 export const MemberItem = (props: Props) => {
-  const { children, chatKey, indicator, verified, untrustworthy } = props
+  const { member, indicator, verified, untrustworthy } = props
+  const { publicKey, username, colorHash } = member
 
   return (
     <Flex gap="2" align="center" css={{ height: 56 }}>
-      <Avatar size={32} indicator={indicator} />
+      <Avatar size={32} indicator={indicator} colorHash={colorHash} />
       <div>
         <Flex align="center" gap={1}>
           <Text size="15" color="accent" truncate>
-            {children}
+            {username}
           </Text>
           {verified && (
             <svg
@@ -59,7 +60,7 @@ export const MemberItem = (props: Props) => {
           )}
         </Flex>
         <EthAddress size={10} color="gray">
-          {chatKey}
+          {publicKey}
         </EthAddress>
       </div>
     </Flex>
diff --git a/packages/status-react/src/protocol/index.tsx b/packages/status-react/src/protocol/index.tsx
index d7e2530..ffc380f 100644
--- a/packages/status-react/src/protocol/index.tsx
+++ b/packages/status-react/src/protocol/index.tsx
@@ -3,4 +3,5 @@ export { useAccount } from './use-account'
 export type { Chat } from './use-chat'
 export { useChat } from './use-chat'
 export { useChats } from './use-chats'
+export type { Member } from './use-members'
 export { useMembers } from './use-members'
diff --git a/packages/status-react/src/protocol/use-members.tsx b/packages/status-react/src/protocol/use-members.tsx
index d4e1d35..6669043 100644
--- a/packages/status-react/src/protocol/use-members.tsx
+++ b/packages/status-react/src/protocol/use-members.tsx
@@ -1,11 +1,12 @@
 import { useProtocol } from '~/src/protocol'
 
-import type { Community } from '@status-im/js'
+import type { Member } from '@status-im/js'
 
-export type Member = Community['description']['members'][0]
+// todo: remove in favor of useCommunity
+export const useMembers = (): Member[] => {
+  const { client } = useProtocol()
 
-export const useMembers = (): string[] => {
-  const { community } = useProtocol()
-
-  return Object.keys(community.members)
+  return client.community.members
 }
+
+export type { Member }