diff --git a/keyserver/src/creators/account-creator.js b/keyserver/src/creators/account-creator.js
index ef4842c81..4050b50a1 100644
--- a/keyserver/src/creators/account-creator.js
+++ b/keyserver/src/creators/account-creator.js
@@ -1,300 +1,300 @@
 // @flow
 
 import invariant from 'invariant';
 import bcrypt from 'twin-bcrypt';
 
 import ashoat from 'lib/facts/ashoat.js';
 import bots from 'lib/facts/bots.js';
 import genesis from 'lib/facts/genesis.js';
 import { policyTypes } from 'lib/facts/policies.js';
 import {
   validUsernameRegex,
   oldValidUsernameRegex,
 } from 'lib/shared/account-utils.js';
 import { hasMinCodeVersion } from 'lib/shared/version-utils.js';
 import type {
   RegisterResponse,
   RegisterRequest,
 } from 'lib/types/account-types.js';
 import type { SignedIdentityKeysBlob } from 'lib/types/crypto-types.js';
 import type {
   PlatformDetails,
   DeviceTokenUpdateRequest,
 } from 'lib/types/device-types.js';
 import type { CalendarQuery } from 'lib/types/entry-types.js';
 import { messageTypes } from 'lib/types/message-types.js';
 import type { SIWESocialProof } from 'lib/types/siwe-types.js';
 import { threadTypes } from 'lib/types/thread-types.js';
 import { ServerError } from 'lib/utils/errors.js';
 import { values } from 'lib/utils/objects.js';
 import { reservedUsernamesSet } from 'lib/utils/reserved-users.js';
 import { isValidEthereumAddress } from 'lib/utils/siwe-utils.js';
 
 import createIDs from './id-creator.js';
 import createMessages from './message-creator.js';
 import {
   createThread,
   createPrivateThread,
   privateThreadDescription,
 } from './thread-creator.js';
 import { dbQuery, SQL } from '../database/database.js';
 import { deleteCookie } from '../deleters/cookie-deleters.js';
 import { fetchThreadInfos } from '../fetchers/thread-fetchers.js';
 import {
   fetchLoggedInUserInfo,
   fetchKnownUserInfos,
 } from '../fetchers/user-fetchers.js';
 import { verifyCalendarQueryThreadIDs } from '../responders/entry-responders.js';
 import { createNewUserCookie, setNewSession } from '../session/cookies.js';
 import { createScriptViewer } from '../session/scripts.js';
 import type { Viewer } from '../session/viewer.js';
 import { updateThread } from '../updaters/thread-updaters.js';
 import { viewerAcknowledgmentUpdater } from '../updaters/viewer-acknowledgment-updater.js';
 
 const { commbot } = bots;
 
 const ashoatMessages = [
   'welcome to Comm!',
   'as you inevitably discover bugs, have feature requests, or design ' +
     'suggestions, feel free to message them to me in the app.',
 ];
 
 const privateMessages = [privateThreadDescription];
 
 async function createAccount(
   viewer: Viewer,
   request: RegisterRequest,
 ): Promise<RegisterResponse> {
   if (request.password.trim() === '') {
     throw new ServerError('empty_password');
   }
   const usernameRegex = hasMinCodeVersion(viewer.platformDetails, 69)
     ? validUsernameRegex
     : oldValidUsernameRegex;
   if (request.username.search(usernameRegex) === -1) {
     throw new ServerError('invalid_username');
   }
 
   const usernameQuery = SQL`
     SELECT COUNT(id) AS count
     FROM users
     WHERE LCASE(username) = LCASE(${request.username})
   `;
   const promises = [dbQuery(usernameQuery)];
   const { calendarQuery, signedIdentityKeysBlob } = request;
   if (calendarQuery) {
     promises.push(verifyCalendarQueryThreadIDs(calendarQuery));
   }
 
   const [[usernameResult]] = await Promise.all(promises);
   if (
     reservedUsernamesSet.has(request.username.toLowerCase()) ||
     isValidEthereumAddress(request.username.toLowerCase())
   ) {
     if (hasMinCodeVersion(viewer.platformDetails, 120)) {
       throw new ServerError('username_reserved');
     } else {
       throw new ServerError('username_taken');
     }
   }
   if (usernameResult[0].count !== 0) {
     throw new ServerError('username_taken');
   }
 
   const hash = bcrypt.hashSync(request.password);
   const time = Date.now();
   const deviceToken = request.deviceTokenUpdateRequest
     ? request.deviceTokenUpdateRequest.deviceToken
     : viewer.deviceToken;
   const [id] = await createIDs('users', 1);
   const newUserRow = [id, request.username, hash, time];
   const newUserQuery = SQL`
     INSERT INTO users(id, username, hash, creation_time)
     VALUES ${[newUserRow]}
   `;
 
   const [userViewerData] = await Promise.all([
     createNewUserCookie(id, {
       platformDetails: request.platformDetails,
       deviceToken,
       signedIdentityKeysBlob,
     }),
     deleteCookie(viewer.cookieID),
     dbQuery(newUserQuery),
   ]);
   viewer.setNewCookie(userViewerData);
 
   if (calendarQuery) {
     await setNewSession(viewer, calendarQuery, 0);
   }
 
   await Promise.all([
     updateThread(
       createScriptViewer(ashoat.id),
       {
         threadID: genesis.id,
         changes: { newMemberIDs: [id] },
       },
       { forceAddMembers: true, silenceMessages: true, ignorePermissions: true },
     ),
     viewerAcknowledgmentUpdater(viewer, policyTypes.tosAndPrivacyPolicy),
   ]);
 
   const [privateThreadResult, ashoatThreadResult] = await Promise.all([
-    createPrivateThread(viewer, request.username),
+    createPrivateThread(viewer),
     createThread(
       viewer,
       {
         type: threadTypes.PERSONAL,
         initialMemberIDs: [ashoat.id],
       },
       { forceAddMembers: true },
     ),
   ]);
   const ashoatThreadID = ashoatThreadResult.newThreadInfo
     ? ashoatThreadResult.newThreadInfo.id
     : ashoatThreadResult.newThreadID;
   const privateThreadID = privateThreadResult.newThreadInfo
     ? privateThreadResult.newThreadInfo.id
     : privateThreadResult.newThreadID;
   invariant(
     ashoatThreadID && privateThreadID,
     'createThread should return either newThreadInfo or newThreadID',
   );
 
   let messageTime = Date.now();
   const ashoatMessageDatas = ashoatMessages.map(message => ({
     type: messageTypes.TEXT,
     threadID: ashoatThreadID,
     creatorID: ashoat.id,
     time: messageTime++,
     text: message,
   }));
   const privateMessageDatas = privateMessages.map(message => ({
     type: messageTypes.TEXT,
     threadID: privateThreadID,
     creatorID: commbot.userID,
     time: messageTime++,
     text: message,
   }));
   const messageDatas = [...ashoatMessageDatas, ...privateMessageDatas];
   const [messageInfos, threadsResult, userInfos, currentUserInfo] =
     await Promise.all([
       createMessages(viewer, messageDatas),
       fetchThreadInfos(viewer),
       fetchKnownUserInfos(viewer),
       fetchLoggedInUserInfo(viewer),
     ]);
   const rawMessageInfos = [
     ...ashoatThreadResult.newMessageInfos,
     ...privateThreadResult.newMessageInfos,
     ...messageInfos,
   ];
 
   return {
     id,
     rawMessageInfos,
     currentUserInfo,
     cookieChange: {
       threadInfos: threadsResult.threadInfos,
       userInfos: values(userInfos),
     },
   };
 }
 
 export type ProcessSIWEAccountCreationRequest = {
   +address: string,
   +calendarQuery: CalendarQuery,
   +deviceTokenUpdateRequest?: ?DeviceTokenUpdateRequest,
   +platformDetails: PlatformDetails,
   +socialProof: SIWESocialProof,
   +signedIdentityKeysBlob?: ?SignedIdentityKeysBlob,
 };
 // Note: `processSIWEAccountCreation(...)` assumes that the validity of
 //       `ProcessSIWEAccountCreationRequest` was checked at call site.
 async function processSIWEAccountCreation(
   viewer: Viewer,
   request: ProcessSIWEAccountCreationRequest,
 ): Promise<string> {
   const { calendarQuery, signedIdentityKeysBlob } = request;
   await verifyCalendarQueryThreadIDs(calendarQuery);
 
   const time = Date.now();
   const deviceToken = request.deviceTokenUpdateRequest
     ? request.deviceTokenUpdateRequest.deviceToken
     : viewer.deviceToken;
   const [id] = await createIDs('users', 1);
   const newUserRow = [id, request.address, request.address, time];
   const newUserQuery = SQL`
     INSERT INTO users(id, username, ethereum_address, creation_time)
     VALUES ${[newUserRow]}
   `;
   const [userViewerData] = await Promise.all([
     createNewUserCookie(id, {
       platformDetails: request.platformDetails,
       deviceToken,
       socialProof: request.socialProof,
       signedIdentityKeysBlob,
     }),
     deleteCookie(viewer.cookieID),
     dbQuery(newUserQuery),
   ]);
   viewer.setNewCookie(userViewerData);
 
   await setNewSession(viewer, calendarQuery, 0);
 
   await Promise.all([
     updateThread(
       createScriptViewer(ashoat.id),
       {
         threadID: genesis.id,
         changes: { newMemberIDs: [id] },
       },
       { forceAddMembers: true, silenceMessages: true, ignorePermissions: true },
     ),
     viewerAcknowledgmentUpdater(viewer, policyTypes.tosAndPrivacyPolicy),
   ]);
 
   const [privateThreadResult, ashoatThreadResult] = await Promise.all([
-    createPrivateThread(viewer, request.address),
+    createPrivateThread(viewer),
     createThread(
       viewer,
       {
         type: threadTypes.PERSONAL,
         initialMemberIDs: [ashoat.id],
       },
       { forceAddMembers: true },
     ),
   ]);
   const ashoatThreadID = ashoatThreadResult.newThreadInfo
     ? ashoatThreadResult.newThreadInfo.id
     : ashoatThreadResult.newThreadID;
   const privateThreadID = privateThreadResult.newThreadInfo
     ? privateThreadResult.newThreadInfo.id
     : privateThreadResult.newThreadID;
   invariant(
     ashoatThreadID && privateThreadID,
     'createThread should return either newThreadInfo or newThreadID',
   );
 
   let messageTime = Date.now();
   const ashoatMessageDatas = ashoatMessages.map(message => ({
     type: messageTypes.TEXT,
     threadID: ashoatThreadID,
     creatorID: ashoat.id,
     time: messageTime++,
     text: message,
   }));
   const privateMessageDatas = privateMessages.map(message => ({
     type: messageTypes.TEXT,
     threadID: privateThreadID,
     creatorID: commbot.userID,
     time: messageTime++,
     text: message,
   }));
   const messageDatas = [...ashoatMessageDatas, ...privateMessageDatas];
   await Promise.all([createMessages(viewer, messageDatas)]);
   return id;
 }
 
 export { createAccount, processSIWEAccountCreation };
diff --git a/keyserver/src/creators/thread-creator.js b/keyserver/src/creators/thread-creator.js
index 0961af69c..b5df08172 100644
--- a/keyserver/src/creators/thread-creator.js
+++ b/keyserver/src/creators/thread-creator.js
@@ -1,524 +1,520 @@
 // @flow
 
 import invariant from 'invariant';
 
 import bots from 'lib/facts/bots.js';
 import genesis from 'lib/facts/genesis.js';
 import {
   generatePendingThreadColor,
   generateRandomColor,
 } from 'lib/shared/color-utils.js';
 import { getThreadTypeParentRequirement } from 'lib/shared/thread-utils.js';
 import { hasMinCodeVersion } from 'lib/shared/version-utils.js';
 import type { Shape } from 'lib/types/core.js';
 import { messageTypes } from 'lib/types/message-types.js';
 import {
   type ServerNewThreadRequest,
   type NewThreadResponse,
   threadTypes,
   threadPermissions,
   threadTypeIsCommunityRoot,
 } from 'lib/types/thread-types.js';
 import type { UserInfos } from 'lib/types/user-types.js';
 import { pushAll } from 'lib/utils/array.js';
 import { ServerError } from 'lib/utils/errors.js';
 import { promiseAll } from 'lib/utils/promises.js';
 import { firstLine } from 'lib/utils/string-utils.js';
 
 import createIDs from './id-creator.js';
 import createMessages from './message-creator.js';
 import {
   createInitialRolesForNewThread,
   getRolePermissionBlobs,
 } from './role-creator.js';
 import type { UpdatesForCurrentSession } from './update-creator.js';
 import { dbQuery, SQL } from '../database/database.js';
 import {
   fetchLatestEditMessageContentByID,
   fetchMessageInfoByID,
 } from '../fetchers/message-fetchers.js';
 import {
   determineThreadAncestry,
   personalThreadQuery,
 } from '../fetchers/thread-fetchers.js';
 import {
   checkThreadPermission,
   validateCandidateMembers,
 } from '../fetchers/thread-permission-fetchers.js';
 import type { Viewer } from '../session/viewer.js';
 import {
   changeRole,
   recalculateThreadPermissions,
   commitMembershipChangeset,
   getChangesetCommitResultForExistingThread,
 } from '../updaters/thread-permission-updaters.js';
 import { joinThread } from '../updaters/thread-updaters.js';
 import RelationshipChangeset from '../utils/relationship-changeset.js';
 
 const { commbot } = bots;
 
 const privateThreadDescription: string =
   'This is your private chat, ' +
   'where you can set reminders and jot notes in private!';
 
 type CreateThreadOptions = Shape<{
   +forceAddMembers: boolean,
   +updatesForCurrentSession: UpdatesForCurrentSession,
   +silentlyFailMembers: boolean,
 }>;
 
 // If forceAddMembers is set, we will allow the viewer to add random users who
 // they aren't friends with. We will only fail if the viewer is trying to add
 // somebody who they have blocked or has blocked them. On the other hand, if
 // forceAddMembers is not set, we will fail if the viewer tries to add somebody
 // who they aren't friends with and doesn't have a membership row with a
 // nonnegative role for the parent thread.
 async function createThread(
   viewer: Viewer,
   request: ServerNewThreadRequest,
   options?: CreateThreadOptions,
 ): Promise<NewThreadResponse> {
   if (!viewer.loggedIn) {
     throw new ServerError('not_logged_in');
   }
 
   const forceAddMembers = options?.forceAddMembers ?? false;
   const updatesForCurrentSession =
     options?.updatesForCurrentSession ?? 'return';
   const silentlyFailMembers = options?.silentlyFailMembers ?? false;
 
   const threadType = request.type;
   const shouldCreateRelationships =
     forceAddMembers || threadType === threadTypes.PERSONAL;
   let parentThreadID = request.parentThreadID ? request.parentThreadID : null;
   const initialMemberIDsFromRequest =
     request.initialMemberIDs && request.initialMemberIDs.length > 0
       ? [...new Set(request.initialMemberIDs)]
       : null;
   const ghostMemberIDsFromRequest =
     request.ghostMemberIDs && request.ghostMemberIDs.length > 0
       ? [...new Set(request.ghostMemberIDs)]
       : null;
 
   const sourceMessageID = request.sourceMessageID
     ? request.sourceMessageID
     : null;
   invariant(
     threadType !== threadTypes.SIDEBAR || sourceMessageID,
     'sourceMessageID should be set for sidebar',
   );
 
   const parentRequirement = getThreadTypeParentRequirement(threadType);
   if (
     (parentRequirement === 'required' && !parentThreadID) ||
     (parentRequirement === 'disabled' && parentThreadID)
   ) {
     throw new ServerError('invalid_parameters');
   }
 
   if (
     threadType === threadTypes.PERSONAL &&
     request.initialMemberIDs?.length !== 1
   ) {
     throw new ServerError('invalid_parameters');
   }
 
   const requestParentThreadID = parentThreadID;
   const confirmParentPermissionPromise = (async () => {
     if (!requestParentThreadID) {
       return;
     }
     const hasParentPermission = await checkThreadPermission(
       viewer,
       requestParentThreadID,
       threadType === threadTypes.SIDEBAR
         ? threadPermissions.CREATE_SIDEBARS
         : threadPermissions.CREATE_SUBCHANNELS,
     );
     if (!hasParentPermission) {
       throw new ServerError('invalid_credentials');
     }
   })();
 
   // This is a temporary hack until we release actual E2E-encrypted local
   // conversations. For now we are hosting all root threads on Ashoat's
   // keyserver, so we set them to the have the Genesis community as their
   // parent thread.
   if (!parentThreadID && !threadTypeIsCommunityRoot(threadType)) {
     parentThreadID = genesis.id;
   }
 
   const determineThreadAncestryPromise = determineThreadAncestry(
     parentThreadID,
     threadType,
   );
 
   const validateMembersPromise = (async () => {
     const threadAncestry = await determineThreadAncestryPromise;
     const defaultRolePermissions = getRolePermissionBlobs(threadType).Members;
     const { initialMemberIDs, ghostMemberIDs } = await validateCandidateMembers(
       viewer,
       {
         initialMemberIDs: initialMemberIDsFromRequest,
         ghostMemberIDs: ghostMemberIDsFromRequest,
       },
       {
         threadType,
         parentThreadID,
         containingThreadID: threadAncestry.containingThreadID,
         defaultRolePermissions,
       },
       { requireRelationship: !shouldCreateRelationships },
     );
     if (
       !silentlyFailMembers &&
       (Number(initialMemberIDs?.length) <
         Number(initialMemberIDsFromRequest?.length) ||
         Number(ghostMemberIDs?.length) <
           Number(ghostMemberIDsFromRequest?.length))
     ) {
       throw new ServerError('invalid_credentials');
     }
     return { initialMemberIDs, ghostMemberIDs };
   })();
 
   const checkPromises = {};
   checkPromises.confirmParentPermission = confirmParentPermissionPromise;
   checkPromises.threadAncestry = determineThreadAncestryPromise;
   checkPromises.validateMembers = validateMembersPromise;
   if (sourceMessageID) {
     checkPromises.sourceMessage = fetchMessageInfoByID(viewer, sourceMessageID);
   }
   const {
     sourceMessage,
     threadAncestry,
     validateMembers: { initialMemberIDs, ghostMemberIDs },
   } = await promiseAll(checkPromises);
 
   if (
     sourceMessage &&
     (sourceMessage.type === messageTypes.REACTION ||
       sourceMessage.type === messageTypes.EDIT_MESSAGE)
   ) {
     throw new ServerError('invalid_parameters');
   }
 
   let { id } = request;
   if (id === null || id === undefined) {
     const ids = await createIDs('threads', 1);
     id = ids[0];
   }
   const newRoles = await createInitialRolesForNewThread(id, threadType);
 
   const name = request.name ? firstLine(request.name) : null;
   const description = request.description ? request.description : null;
   let color = request.color
     ? request.color.toLowerCase()
     : generateRandomColor();
   if (threadType === threadTypes.PERSONAL) {
     color = generatePendingThreadColor([
       ...(request.initialMemberIDs ?? []),
       viewer.id,
     ]);
   }
 
   const time = Date.now();
 
   const row = [
     id,
     threadType,
     name,
     description,
     viewer.userID,
     time,
     color,
     parentThreadID,
     threadAncestry.containingThreadID,
     threadAncestry.community,
     threadAncestry.depth,
     newRoles.default.id,
     sourceMessageID,
   ];
 
   let existingThreadQuery = null;
   if (threadType === threadTypes.PERSONAL) {
     const otherMemberID = initialMemberIDs?.[0];
     invariant(
       otherMemberID,
       'Other member id should be set for a PERSONAL thread',
     );
     existingThreadQuery = personalThreadQuery(viewer.userID, otherMemberID);
   } else if (sourceMessageID) {
     existingThreadQuery = SQL`
       SELECT t.id
       FROM threads t
       WHERE t.source_message = ${sourceMessageID}
     `;
   }
 
   if (existingThreadQuery) {
     const query = SQL`
       INSERT INTO threads(id, type, name, description, creator, creation_time,
         color, parent_thread_id, containing_thread_id, community, depth,
         default_role, source_message)
       SELECT ${row}
       WHERE NOT EXISTS (`;
     query.append(existingThreadQuery).append(SQL`)`);
     const [result] = await dbQuery(query);
 
     if (result.affectedRows === 0) {
       const deleteRoles = SQL`
         DELETE FROM roles
         WHERE id IN (${newRoles.default.id}, ${newRoles.creator.id})
       `;
       const deleteIDs = SQL`
         DELETE FROM ids
         WHERE id IN (${id}, ${newRoles.default.id}, ${newRoles.creator.id})
       `;
       const [[existingThreadResult]] = await Promise.all([
         dbQuery(existingThreadQuery),
         dbQuery(deleteRoles),
         dbQuery(deleteIDs),
       ]);
       invariant(existingThreadResult.length > 0, 'thread should exist');
       const existingThreadID = existingThreadResult[0].id.toString();
 
       let calendarQuery;
       if (hasMinCodeVersion(viewer.platformDetails, 87)) {
         invariant(request.calendarQuery, 'calendar query should exist');
         calendarQuery = {
           ...request.calendarQuery,
           filters: [
             ...request.calendarQuery.filters,
             { type: 'threads', threadIDs: [existingThreadID] },
           ],
         };
       }
 
       let joinUpdateInfos = [];
       let userInfos: UserInfos = {};
       let newMessageInfos = [];
       if (threadType !== threadTypes.PERSONAL) {
         const joinThreadResult = await joinThread(viewer, {
           threadID: existingThreadID,
           calendarQuery,
         });
         joinUpdateInfos = joinThreadResult.updatesResult.newUpdates;
         userInfos = joinThreadResult.userInfos;
         newMessageInfos = joinThreadResult.rawMessageInfos;
       }
 
       const { viewerUpdates: newUpdates, userInfos: changesetUserInfos } =
         await getChangesetCommitResultForExistingThread(
           viewer,
           existingThreadID,
           joinUpdateInfos,
           { calendarQuery, updatesForCurrentSession },
         );
       userInfos = { ...userInfos, ...changesetUserInfos };
 
       return {
         newThreadID: existingThreadID,
         updatesResult: {
           newUpdates,
         },
         userInfos,
         newMessageInfos,
       };
     }
   } else {
     const query = SQL`
       INSERT INTO threads(id, type, name, description, creator, creation_time,
         color, parent_thread_id, containing_thread_id, community, depth,
         default_role, source_message)
       VALUES ${[row]}
     `;
     await dbQuery(query);
   }
 
   let initialMemberPromise;
   if (initialMemberIDs) {
     initialMemberPromise = changeRole(id, initialMemberIDs, null, {
       setNewMembersToUnread: true,
     });
   }
   let ghostMemberPromise;
   if (ghostMemberIDs) {
     ghostMemberPromise = changeRole(id, ghostMemberIDs, -1);
   }
 
   const [
     creatorChangeset,
     initialMembersChangeset,
     ghostMembersChangeset,
     recalculatePermissionsChangeset,
   ] = await Promise.all([
     changeRole(id, [viewer.userID], newRoles.creator.id),
     initialMemberPromise,
     ghostMemberPromise,
     recalculateThreadPermissions(id),
   ]);
 
   const {
     membershipRows: creatorMembershipRows,
     relationshipChangeset: creatorRelationshipChangeset,
   } = creatorChangeset;
 
   const {
     membershipRows: recalculateMembershipRows,
     relationshipChangeset: recalculateRelationshipChangeset,
   } = recalculatePermissionsChangeset;
 
   const membershipRows = [
     ...creatorMembershipRows,
     ...recalculateMembershipRows,
   ];
   const relationshipChangeset = new RelationshipChangeset();
   relationshipChangeset.addAll(creatorRelationshipChangeset);
   relationshipChangeset.addAll(recalculateRelationshipChangeset);
 
   if (initialMembersChangeset) {
     const {
       membershipRows: initialMembersMembershipRows,
       relationshipChangeset: initialMembersRelationshipChangeset,
     } = initialMembersChangeset;
     pushAll(membershipRows, initialMembersMembershipRows);
     relationshipChangeset.addAll(initialMembersRelationshipChangeset);
   }
   if (ghostMembersChangeset) {
     const {
       membershipRows: ghostMembersMembershipRows,
       relationshipChangeset: ghostMembersRelationshipChangeset,
     } = ghostMembersChangeset;
     pushAll(membershipRows, ghostMembersMembershipRows);
     relationshipChangeset.addAll(ghostMembersRelationshipChangeset);
   }
 
   const changeset = { membershipRows, relationshipChangeset };
   const { threadInfos, viewerUpdates, userInfos } =
     await commitMembershipChangeset(viewer, changeset, {
       updatesForCurrentSession,
     });
 
   const initialMemberAndCreatorIDs = initialMemberIDs
     ? [...initialMemberIDs, viewer.userID]
     : [viewer.userID];
   const messageDatas = [];
   if (threadType !== threadTypes.SIDEBAR) {
     messageDatas.push({
       type: messageTypes.CREATE_THREAD,
       threadID: id,
       creatorID: viewer.userID,
       time,
       initialThreadState: {
         type: threadType,
         name,
         parentThreadID,
         color,
         memberIDs: initialMemberAndCreatorIDs,
       },
     });
   } else {
     invariant(parentThreadID, 'parentThreadID should be set for sidebar');
     if (!sourceMessage || sourceMessage.type === messageTypes.SIDEBAR_SOURCE) {
       throw new ServerError('invalid_parameters');
     }
 
     let editedSourceMessage = sourceMessage;
     if (sourceMessageID && sourceMessage.type === messageTypes.TEXT) {
       const editMessageContent = await fetchLatestEditMessageContentByID(
         sourceMessageID,
       );
       if (editMessageContent) {
         editedSourceMessage = {
           ...sourceMessage,
           text: editMessageContent.text,
         };
       }
     }
 
     messageDatas.push(
       {
         type: messageTypes.SIDEBAR_SOURCE,
         threadID: id,
         creatorID: viewer.userID,
         time,
         sourceMessage: editedSourceMessage,
       },
       {
         type: messageTypes.CREATE_SIDEBAR,
         threadID: id,
         creatorID: viewer.userID,
         time,
         sourceMessageAuthorID: sourceMessage.creatorID,
         initialThreadState: {
           name,
           parentThreadID,
           color,
           memberIDs: initialMemberAndCreatorIDs,
         },
       },
     );
   }
 
   if (
     parentThreadID &&
     threadType !== threadTypes.SIDEBAR &&
     (parentThreadID !== genesis.id ||
       threadType === threadTypes.COMMUNITY_OPEN_SUBTHREAD ||
       threadType === threadTypes.COMMUNITY_OPEN_ANNOUNCEMENT_SUBTHREAD)
   ) {
     messageDatas.push({
       type: messageTypes.CREATE_SUB_THREAD,
       threadID: parentThreadID,
       creatorID: viewer.userID,
       time,
       childThreadID: id,
     });
   }
   const newMessageInfos = await createMessages(
     viewer,
     messageDatas,
     updatesForCurrentSession,
   );
 
   if (hasMinCodeVersion(viewer.platformDetails, 62)) {
     return {
       newThreadID: id,
       updatesResult: {
         newUpdates: viewerUpdates,
       },
       userInfos,
       newMessageInfos,
     };
   }
 
   return {
     newThreadInfo: threadInfos[id],
     updatesResult: {
       newUpdates: viewerUpdates,
     },
     userInfos,
     newMessageInfos,
   };
 }
 
-function createPrivateThread(
-  viewer: Viewer,
-  username: string,
-): Promise<NewThreadResponse> {
+function createPrivateThread(viewer: Viewer): Promise<NewThreadResponse> {
   return createThread(
     viewer,
     {
       type: threadTypes.PRIVATE,
-      name: username,
       description: privateThreadDescription,
       ghostMemberIDs: [commbot.userID],
     },
     {
       forceAddMembers: true,
     },
   );
 }
 
 export { createThread, createPrivateThread, privateThreadDescription };