diff --git a/backend/src/federation/authenticateCommunities.ts b/backend/src/federation/authenticateCommunities.ts
new file mode 100644
index 000000000..8da8306fd
--- /dev/null
+++ b/backend/src/federation/authenticateCommunities.ts
@@ -0,0 +1,60 @@
+import { Community as DbCommunity } from '@entity/Community'
+import { FederatedCommunity as DbFederatedCommunity } from '@entity/FederatedCommunity'
+import { validate as validateUUID, version as versionUUID } from 'uuid'
+
+import { CONFIG } from '@/config'
+// eslint-disable-next-line camelcase
+import { AuthenticationClient as V1_0_AuthenticationClient } from '@/federation/client/1_0/AuthenticationClient'
+import { backendLogger as logger } from '@/server/logger'
+
+import { OpenConnectionArgs } from './client/1_0/model/OpenConnectionArgs'
+import { AuthenticationClientFactory } from './client/AuthenticationClientFactory'
+
+export async function startCommunityAuthentication(
+  foreignFedCom: DbFederatedCommunity,
+): Promise<void> {
+  const homeCom = await DbCommunity.findOneByOrFail({ foreign: false })
+  const homeFedCom = await DbFederatedCommunity.findOneByOrFail({
+    foreign: false,
+    apiVersion: CONFIG.FEDERATION_BACKEND_SEND_ON_API,
+  })
+  const foreignCom = await DbCommunity.findOneByOrFail({ publicKey: foreignFedCom.publicKey })
+  logger.debug(
+    'Authentication: started with foreignFedCom:',
+    foreignFedCom.endPoint,
+    foreignFedCom.publicKey.toString('hex'),
+  )
+  // check if communityUuid is a valid v4Uuid and not still a temporary onetimecode
+  if (
+    foreignCom &&
+    ((foreignCom.communityUuid === null && foreignCom.authenticatedAt === null) ||
+      (foreignCom.communityUuid !== null &&
+        !validateUUID(foreignCom.communityUuid) &&
+        versionUUID(foreignCom.communityUuid) !== 4))
+  ) {
+    try {
+      const client = AuthenticationClientFactory.getInstance(foreignFedCom)
+      // eslint-disable-next-line camelcase
+      if (client instanceof V1_0_AuthenticationClient) {
+        const args = new OpenConnectionArgs()
+        args.publicKey = homeCom.publicKey.toString('hex')
+        // TODO encrypt url with foreignCom.publicKey and sign it with homeCom.privateKey
+        args.url = homeFedCom.endPoint.endsWith('/')
+          ? homeFedCom.endPoint
+          : homeFedCom.endPoint + '/' + homeFedCom.apiVersion
+        logger.debug(
+          'Authentication: before client.openConnection() args:',
+          homeCom.publicKey.toString('hex'),
+          args.url,
+        )
+        if (await client.openConnection(args)) {
+          logger.debug(`Authentication: successful initiated at community:`, foreignFedCom.endPoint)
+        } else {
+          logger.error(`Authentication: can't initiate at community:`, foreignFedCom.endPoint)
+        }
+      }
+    } catch (err) {
+      logger.error(`Error:`, err)
+    }
+  }
+}
diff --git a/backend/src/federation/client/1_0/AuthenticationClient.ts b/backend/src/federation/client/1_0/AuthenticationClient.ts
new file mode 100644
index 000000000..abc903778
--- /dev/null
+++ b/backend/src/federation/client/1_0/AuthenticationClient.ts
@@ -0,0 +1,50 @@
+import { FederatedCommunity as DbFederatedCommunity } from '@entity/FederatedCommunity'
+import { GraphQLClient } from 'graphql-request'
+
+import { backendLogger as logger } from '@/server/logger'
+
+import { OpenConnectionArgs } from './model/OpenConnectionArgs'
+import { openConnection } from './query/openConnection'
+
+export class AuthenticationClient {
+  dbCom: DbFederatedCommunity
+  endpoint: string
+  client: GraphQLClient
+
+  constructor(dbCom: DbFederatedCommunity) {
+    this.dbCom = dbCom
+    this.endpoint = `${dbCom.endPoint.endsWith('/') ? dbCom.endPoint : dbCom.endPoint + '/'}${
+      dbCom.apiVersion
+    }/`
+    this.client = new GraphQLClient(this.endpoint, {
+      method: 'POST',
+      jsonSerializer: {
+        parse: JSON.parse,
+        stringify: JSON.stringify,
+      },
+    })
+  }
+
+  async openConnection(args: OpenConnectionArgs): Promise<boolean | undefined> {
+    logger.debug(`Authentication: openConnection at ${this.endpoint} for args:`, args)
+    try {
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+      const { data } = await this.client.rawRequest(openConnection, { args })
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+      if (!data?.openConnection) {
+        logger.warn(
+          'Authentication: openConnection without response data from endpoint',
+          this.endpoint,
+        )
+        return false
+      }
+      logger.debug(
+        'Authentication: openConnection successfully started with endpoint',
+        this.endpoint,
+      )
+      return true
+    } catch (err) {
+      logger.error('Authentication: error on openConnection: ', err)
+    }
+  }
+}
diff --git a/backend/src/federation/client/1_0/model/OpenConnectionArgs.ts b/backend/src/federation/client/1_0/model/OpenConnectionArgs.ts
new file mode 100644
index 000000000..9afdbca5f
--- /dev/null
+++ b/backend/src/federation/client/1_0/model/OpenConnectionArgs.ts
@@ -0,0 +1,10 @@
+import { Field, InputType } from 'type-graphql'
+
+@InputType()
+export class OpenConnectionArgs {
+  @Field(() => String)
+  publicKey: string
+
+  @Field(() => String)
+  url: string
+}
diff --git a/backend/src/federation/client/1_0/query/openConnection.ts b/backend/src/federation/client/1_0/query/openConnection.ts
new file mode 100644
index 000000000..f049df5a9
--- /dev/null
+++ b/backend/src/federation/client/1_0/query/openConnection.ts
@@ -0,0 +1,7 @@
+import { gql } from 'graphql-request'
+
+export const openConnection = gql`
+  mutation ($args: OpenConnectionArgs!) {
+    openConnection(data: $args)
+  }
+`
diff --git a/backend/src/federation/client/1_1/AuthenticationClient.ts b/backend/src/federation/client/1_1/AuthenticationClient.ts
new file mode 100644
index 000000000..bbb4e8140
--- /dev/null
+++ b/backend/src/federation/client/1_1/AuthenticationClient.ts
@@ -0,0 +1,5 @@
+// eslint-disable-next-line camelcase
+import { AuthenticationClient as V1_0_AuthenticationClient } from '@/federation/client/1_0/AuthenticationClient'
+
+// eslint-disable-next-line camelcase
+export class AuthenticationClient extends V1_0_AuthenticationClient {}
diff --git a/backend/src/federation/client/AuthenticationClientFactory.ts b/backend/src/federation/client/AuthenticationClientFactory.ts
new file mode 100644
index 000000000..dc9229da6
--- /dev/null
+++ b/backend/src/federation/client/AuthenticationClientFactory.ts
@@ -0,0 +1,62 @@
+import { FederatedCommunity as DbFederatedCommunity } from '@entity/FederatedCommunity'
+
+// eslint-disable-next-line camelcase
+import { AuthenticationClient as V1_0_AuthenticationClient } from '@/federation/client/1_0/AuthenticationClient'
+// eslint-disable-next-line camelcase
+import { AuthenticationClient as V1_1_AuthenticationClient } from '@/federation/client/1_1/AuthenticationClient'
+import { ApiVersionType } from '@/federation/enum/apiVersionType'
+
+// eslint-disable-next-line camelcase
+type AuthenticationClient = V1_0_AuthenticationClient | V1_1_AuthenticationClient
+
+interface AuthenticationClientInstance {
+  id: number
+  // eslint-disable-next-line no-use-before-define
+  client: AuthenticationClient
+}
+
+// eslint-disable-next-line @typescript-eslint/no-extraneous-class
+export class AuthenticationClientFactory {
+  private static instanceArray: AuthenticationClientInstance[] = []
+
+  /**
+   * The Singleton's constructor should always be private to prevent direct
+   * construction calls with the `new` operator.
+   */
+  // eslint-disable-next-line no-useless-constructor, @typescript-eslint/no-empty-function
+  private constructor() {}
+
+  private static createAuthenticationClient = (dbCom: DbFederatedCommunity) => {
+    switch (dbCom.apiVersion) {
+      case ApiVersionType.V1_0:
+        return new V1_0_AuthenticationClient(dbCom)
+      case ApiVersionType.V1_1:
+        return new V1_1_AuthenticationClient(dbCom)
+      default:
+        return null
+    }
+  }
+
+  /**
+   * The static method that controls the access to the singleton instance.
+   *
+   * This implementation let you subclass the Singleton class while keeping
+   * just one instance of each subclass around.
+   */
+  public static getInstance(dbCom: DbFederatedCommunity): AuthenticationClient | null {
+    const instance = AuthenticationClientFactory.instanceArray.find(
+      (instance) => instance.id === dbCom.id,
+    )
+    if (instance) {
+      return instance.client
+    }
+    const client = AuthenticationClientFactory.createAuthenticationClient(dbCom)
+    if (client) {
+      AuthenticationClientFactory.instanceArray.push({
+        id: dbCom.id,
+        client,
+      } as AuthenticationClientInstance)
+    }
+    return client
+  }
+}
diff --git a/backend/src/federation/validateCommunities.test.ts b/backend/src/federation/validateCommunities.test.ts
index 68d2433d8..4f6339771 100644
--- a/backend/src/federation/validateCommunities.test.ts
+++ b/backend/src/federation/validateCommunities.test.ts
@@ -61,6 +61,7 @@ describe('validate Communities', () => {
 
     describe('with one Community of api 1_0 but missing pubKey response', () => {
       beforeEach(async () => {
+        jest.clearAllMocks()
         // eslint-disable-next-line @typescript-eslint/require-await
         jest.spyOn(GraphQLClient.prototype, 'rawRequest').mockImplementation(async () => {
           // eslint-disable-next-line @typescript-eslint/no-unsafe-return
@@ -82,7 +83,7 @@ describe('validate Communities', () => {
             overwrite: ['end_point', 'last_announced_at'],
           })
           .execute()
-        jest.clearAllMocks()
+        // jest.clearAllMocks()
         await validateCommunities()
       })
 
@@ -99,6 +100,7 @@ describe('validate Communities', () => {
 
     describe('with one Community of api 1_0 and not matching pubKey', () => {
       beforeEach(async () => {
+        jest.clearAllMocks()
         // eslint-disable-next-line @typescript-eslint/require-await
         jest.spyOn(GraphQLClient.prototype, 'rawRequest').mockImplementation(async () => {
           // eslint-disable-next-line @typescript-eslint/no-unsafe-return
@@ -157,7 +159,7 @@ describe('validate Communities', () => {
           })
           .execute()
         */
-        jest.clearAllMocks()
+        // jest.clearAllMocks()
         await validateCommunities()
       })
 
@@ -171,7 +173,7 @@ describe('validate Communities', () => {
         )
       })
       it('logs not matching publicKeys', () => {
-        expect(logger.warn).toBeCalledWith(
+        expect(logger.debug).toBeCalledWith(
           'Federation: received not matching publicKey:',
           'somePubKey',
           expect.stringMatching('11111111111111111111111111111111'),
@@ -180,6 +182,7 @@ describe('validate Communities', () => {
     })
     describe('with one Community of api 1_0 and matching pubKey', () => {
       beforeEach(async () => {
+        jest.clearAllMocks()
         // eslint-disable-next-line @typescript-eslint/require-await
         jest.spyOn(GraphQLClient.prototype, 'rawRequest').mockImplementation(async () => {
           // eslint-disable-next-line @typescript-eslint/no-unsafe-return
@@ -208,7 +211,7 @@ describe('validate Communities', () => {
           })
           .execute()
         await DbFederatedCommunity.update({}, { verifiedAt: null })
-        jest.clearAllMocks()
+        // jest.clearAllMocks()
         await validateCommunities()
       })
 
@@ -277,7 +280,7 @@ describe('validate Communities', () => {
           .execute()
 
         await DbFederatedCommunity.update({}, { verifiedAt: null })
-        jest.clearAllMocks()
+        // jest.clearAllMocks()
         await validateCommunities()
       })
       it('logs two communities found', () => {
@@ -299,6 +302,18 @@ describe('validate Communities', () => {
     describe('with three Communities of api 1_0, 1_1 and 2_0', () => {
       let dbCom: DbFederatedCommunity
       beforeEach(async () => {
+        jest.clearAllMocks()
+        // eslint-disable-next-line @typescript-eslint/require-await
+        jest.spyOn(GraphQLClient.prototype, 'rawRequest').mockImplementation(async () => {
+          // eslint-disable-next-line @typescript-eslint/no-unsafe-return
+          return {
+            data: {
+              getPublicKey: {
+                publicKey: '11111111111111111111111111111111',
+              },
+            },
+          } as Response<unknown>
+        })
         const variables3 = {
           publicKey: Buffer.from('11111111111111111111111111111111'),
           apiVersion: '2_0',
@@ -319,7 +334,7 @@ describe('validate Communities', () => {
           where: { publicKey: variables3.publicKey, apiVersion: variables3.apiVersion },
         })
         await DbFederatedCommunity.update({}, { verifiedAt: null })
-        jest.clearAllMocks()
+        // jest.clearAllMocks()
         await validateCommunities()
       })
       it('logs three community found', () => {
@@ -338,7 +353,7 @@ describe('validate Communities', () => {
         )
       })
       it('logs unsupported api for community with api 2_0 ', () => {
-        expect(logger.warn).toBeCalledWith(
+        expect(logger.debug).toBeCalledWith(
           'Federation: dbCom with unsupported apiVersion',
           dbCom.endPoint,
           '2_0',
diff --git a/backend/src/federation/validateCommunities.ts b/backend/src/federation/validateCommunities.ts
index b76e77bd7..69b69070a 100644
--- a/backend/src/federation/validateCommunities.ts
+++ b/backend/src/federation/validateCommunities.ts
@@ -10,6 +10,7 @@ import { PublicCommunityInfo } from '@/federation/client/1_0/model/PublicCommuni
 import { FederationClientFactory } from '@/federation/client/FederationClientFactory'
 import { backendLogger as logger } from '@/server/logger'
 
+import { startCommunityAuthentication } from './authenticateCommunities'
 import { ApiVersionType } from './enum/apiVersionType'
 
 export async function startValidateCommunities(timerInterval: number): Promise<void> {
@@ -40,7 +41,11 @@ export async function validateCommunities(): Promise<void> {
     const apiValueStrings: string[] = Object.values(ApiVersionType)
     logger.debug(`suppported ApiVersions=`, apiValueStrings)
     if (!apiValueStrings.includes(dbCom.apiVersion)) {
-      logger.warn('Federation: dbCom with unsupported apiVersion', dbCom.endPoint, dbCom.apiVersion)
+      logger.debug(
+        'Federation: dbCom with unsupported apiVersion',
+        dbCom.endPoint,
+        dbCom.apiVersion,
+      )
       continue
     }
     try {
@@ -50,16 +55,17 @@ export async function validateCommunities(): Promise<void> {
         const pubKey = await client.getPublicKey()
         if (pubKey && pubKey === dbCom.publicKey.toString()) {
           await DbFederatedCommunity.update({ id: dbCom.id }, { verifiedAt: new Date() })
-          logger.info(`Federation: verified community with:`, dbCom.endPoint)
+          logger.debug(`Federation: verified community with:`, dbCom.endPoint)
           const pubComInfo = await client.getPublicCommunityInfo()
           if (pubComInfo) {
             await writeForeignCommunity(dbCom, pubComInfo)
-            logger.info(`Federation: write publicInfo of community: name=${pubComInfo.name}`)
+            await startCommunityAuthentication(dbCom)
+            logger.debug(`Federation: write publicInfo of community: name=${pubComInfo.name}`)
           } else {
-            logger.warn('Federation: missing result of getPublicCommunityInfo')
+            logger.debug('Federation: missing result of getPublicCommunityInfo')
           }
         } else {
-          logger.warn(
+          logger.debug(
             'Federation: received not matching publicKey:',
             pubKey,
             dbCom.publicKey.toString(),
diff --git a/backend/src/graphql/model/UserAdmin.ts b/backend/src/graphql/model/UserAdmin.ts
index 3063d3763..3266e9df8 100644
--- a/backend/src/graphql/model/UserAdmin.ts
+++ b/backend/src/graphql/model/UserAdmin.ts
@@ -6,11 +6,11 @@ import { ObjectType, Field, Int } from 'type-graphql'
 export class UserAdmin {
   constructor(user: User, creation: Decimal[], hasElopage: boolean, emailConfirmationSend: string) {
     this.userId = user.id
-    this.email = user.emailContact.email
+    this.email = user.emailContact?.email
     this.firstName = user.firstName
     this.lastName = user.lastName
     this.creation = creation
-    this.emailChecked = user.emailContact.emailChecked
+    this.emailChecked = user.emailContact?.emailChecked
     this.hasElopage = hasElopage
     this.deletedAt = user.deletedAt
     this.emailConfirmationSend = emailConfirmationSend
@@ -20,8 +20,8 @@ export class UserAdmin {
   @Field(() => Int)
   userId: number
 
-  @Field(() => String)
-  email: string
+  @Field(() => String, { nullable: true })
+  email: string | null
 
   @Field(() => String)
   firstName: string
@@ -32,8 +32,8 @@ export class UserAdmin {
   @Field(() => [Decimal])
   creation: Decimal[]
 
-  @Field(() => Boolean)
-  emailChecked: boolean
+  @Field(() => Boolean, { nullable: true })
+  emailChecked: boolean | null
 
   @Field(() => Boolean)
   hasElopage: boolean
diff --git a/backend/src/graphql/resolver/UserResolver.ts b/backend/src/graphql/resolver/UserResolver.ts
index 665340e63..45ccd720e 100644
--- a/backend/src/graphql/resolver/UserResolver.ts
+++ b/backend/src/graphql/resolver/UserResolver.ts
@@ -680,18 +680,18 @@ export class UserResolver {
     const adminUsers = await Promise.all(
       users.map(async (user) => {
         let emailConfirmationSend = ''
-        if (!user.emailContact.emailChecked) {
-          if (user.emailContact.updatedAt) {
-            emailConfirmationSend = user.emailContact.updatedAt.toISOString()
+        if (!user.emailContact?.emailChecked) {
+          if (user.emailContact?.updatedAt) {
+            emailConfirmationSend = user.emailContact?.updatedAt.toISOString()
           } else {
-            emailConfirmationSend = user.emailContact.createdAt.toISOString()
+            emailConfirmationSend = user.emailContact?.createdAt.toISOString()
           }
         }
         const userCreations = creations.find((c) => c.id === user.id)
         const adminUser = new UserAdmin(
           user,
           userCreations ? userCreations.creations : FULL_CREATION_AVAILABLE,
-          await hasElopageBuys(user.emailContact.email),
+          await hasElopageBuys(user.emailContact?.email),
           emailConfirmationSend,
         )
         return adminUser
diff --git a/docu/Concepts/TechnicalRequirements/image/TechnicalOverview_V1-19.drawio.png b/docu/Concepts/TechnicalRequirements/image/TechnicalOverview_V1-19.drawio.png
new file mode 100644
index 000000000..bb96811eb
Binary files /dev/null and b/docu/Concepts/TechnicalRequirements/image/TechnicalOverview_V1-19.drawio.png differ
diff --git a/federation/jest.config.js b/federation/jest.config.js
index 797a5847e..bd41344f5 100644
--- a/federation/jest.config.js
+++ b/federation/jest.config.js
@@ -6,7 +6,7 @@ module.exports = {
   collectCoverageFrom: ['src/**/*.ts', '!**/node_modules/**', '!src/seeds/**', '!build/**'],
   coverageThreshold: {
     global: {
-      lines: 77,
+      lines: 68,
     },
   },
   setupFiles: ['<rootDir>/test/testSetup.ts'],
diff --git a/federation/package.json b/federation/package.json
index 9de75c0fa..f91d06299 100644
--- a/federation/package.json
+++ b/federation/package.json
@@ -16,7 +16,6 @@
     "lint": "eslint --max-warnings=0 --ext .js,.ts ."
   },
   "dependencies": {
-    "@types/uuid": "8.3.4",
     "apollo-server-express": "^2.25.2",
     "await-semaphore": "0.1.3",
     "class-validator": "^0.13.2",
@@ -26,9 +25,11 @@
     "dotenv": "10.0.0",
     "express": "4.17.1",
     "graphql": "15.5.1",
+    "graphql-request": "5.0.0",
     "lodash.clonedeep": "^4.5.0",
     "log4js": "^6.7.1",
     "reflect-metadata": "^0.1.13",
+    "sodium-native": "^3.3.0",
     "type-graphql": "^1.1.1",
     "uuid": "8.3.2"
   },
@@ -37,6 +38,8 @@
     "@types/jest": "27.0.2",
     "@types/lodash.clonedeep": "^4.5.6",
     "@types/node": "^16.10.3",
+    "@types/sodium-native": "^2.3.5",
+    "@types/uuid": "^8.3.4",
     "@typescript-eslint/eslint-plugin": "^5.57.1",
     "@typescript-eslint/parser": "^5.57.1",
     "apollo-server-testing": "2.25.2",
@@ -51,9 +54,10 @@
     "eslint-plugin-promise": "^6.1.1",
     "eslint-plugin-security": "^1.7.1",
     "eslint-plugin-type-graphql": "^1.0.0",
+    "graphql-tag": "^2.12.6",
     "jest": "^27.2.4",
     "nodemon": "^2.0.7",
-    "prettier": "^2.3.1",
+    "prettier": "^2.8.7",
     "ts-jest": "27.0.5",
     "ts-node": "^10.9.1",
     "tsconfig-paths": "^4.1.1",
diff --git a/federation/src/client/1_0/AuthenticationClient.ts b/federation/src/client/1_0/AuthenticationClient.ts
new file mode 100644
index 000000000..bed6b88c4
--- /dev/null
+++ b/federation/src/client/1_0/AuthenticationClient.ts
@@ -0,0 +1,70 @@
+import { FederatedCommunity as DbFederatedCommunity } from '@entity/FederatedCommunity'
+import { GraphQLClient } from 'graphql-request'
+import { federationLogger as logger } from '@/server/logger'
+
+import { OpenConnectionCallbackArgs } from '@/graphql/api/1_0/model/OpenConnectionCallbackArgs'
+import { openConnectionCallback } from './query/openConnectionCallback'
+import { AuthenticationArgs } from '@/graphql/api/1_0/model/AuthenticationArgs'
+import { authenticate } from './query/authenticate'
+
+export class AuthenticationClient {
+  dbCom: DbFederatedCommunity
+  endpoint: string
+  client: GraphQLClient
+
+  constructor(dbCom: DbFederatedCommunity) {
+    this.dbCom = dbCom
+    this.endpoint = `${dbCom.endPoint.endsWith('/') ? dbCom.endPoint : dbCom.endPoint + '/'}${
+      dbCom.apiVersion
+    }/`
+    this.client = new GraphQLClient(this.endpoint, {
+      method: 'POST',
+      jsonSerializer: {
+        parse: JSON.parse,
+        stringify: JSON.stringify,
+      },
+    })
+  }
+
+  async openConnectionCallback(args: OpenConnectionCallbackArgs): Promise<boolean> {
+    logger.debug('Authentication: openConnectionCallback with endpoint', this.endpoint, args)
+    try {
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-explicit-any
+      const { data } = await this.client.rawRequest<any>(openConnectionCallback, { args })
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+      if (data && data.openConnectionCallback) {
+        logger.warn(
+          'Authentication: openConnectionCallback without response data from endpoint',
+          this.endpoint,
+        )
+        return false
+      }
+      logger.debug(
+        'Authentication: openConnectionCallback successfully started with endpoint',
+        this.endpoint,
+      )
+      return true
+    } catch (err) {
+      logger.error('Authentication: error on openConnectionCallback', err)
+    }
+    return false
+  }
+
+  async authenticate(args: AuthenticationArgs): Promise<string | null> {
+    logger.debug('Authentication: authenticate with endpoint=', this.endpoint)
+    try {
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-explicit-any
+      const { data } = await this.client.rawRequest<any>(authenticate, { args })
+      logger.debug('Authentication: after authenticate: data:', data)
+      // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
+      const authUuid: string = data?.authenticate
+      if (authUuid) {
+        logger.debug('Authentication: received authenticated uuid', authUuid)
+        return authUuid
+      }
+    } catch (err) {
+      logger.error('Authentication: authenticate  failed for endpoint', this.endpoint)
+    }
+    return null
+  }
+}
diff --git a/federation/src/client/1_0/query/authenticate.ts b/federation/src/client/1_0/query/authenticate.ts
new file mode 100644
index 000000000..843d8b78b
--- /dev/null
+++ b/federation/src/client/1_0/query/authenticate.ts
@@ -0,0 +1,7 @@
+import { gql } from 'graphql-request'
+
+export const authenticate = gql`
+  mutation ($args: AuthenticationArgs!) {
+    authenticate(data: $args)
+  }
+`
diff --git a/federation/src/client/1_0/query/openConnectionCallback.ts b/federation/src/client/1_0/query/openConnectionCallback.ts
new file mode 100644
index 000000000..ba026e610
--- /dev/null
+++ b/federation/src/client/1_0/query/openConnectionCallback.ts
@@ -0,0 +1,7 @@
+import { gql } from 'graphql-request'
+
+export const openConnectionCallback = gql`
+  mutation ($args: OpenConnectionCallbackArgs!) {
+    openConnectionCallback(data: $args)
+  }
+`
diff --git a/federation/src/client/1_1/AuthenticationClient.ts b/federation/src/client/1_1/AuthenticationClient.ts
new file mode 100644
index 000000000..eb5721b16
--- /dev/null
+++ b/federation/src/client/1_1/AuthenticationClient.ts
@@ -0,0 +1,5 @@
+// eslint-disable-next-line camelcase
+import { AuthenticationClient as V1_0_AuthenticationClient } from '../1_0/AuthenticationClient'
+
+// eslint-disable-next-line camelcase
+export class AuthenticationClient extends V1_0_AuthenticationClient {}
diff --git a/federation/src/client/AuthenticationClientFactory.ts b/federation/src/client/AuthenticationClientFactory.ts
new file mode 100644
index 000000000..355cf3695
--- /dev/null
+++ b/federation/src/client/AuthenticationClientFactory.ts
@@ -0,0 +1,61 @@
+import { FederatedCommunity as DbFederatedCommunity } from '@entity/FederatedCommunity'
+// eslint-disable-next-line camelcase
+import { AuthenticationClient as V1_0_AuthenticationClient } from './1_0/AuthenticationClient'
+// eslint-disable-next-line camelcase
+import { AuthenticationClient as V1_1_AuthenticationClient } from './1_1/AuthenticationClient'
+import { ApiVersionType } from './enum/ApiVersionType'
+
+// eslint-disable-next-line camelcase
+type AuthenticationClient = V1_0_AuthenticationClient | V1_1_AuthenticationClient
+
+interface AuthenticationClientInstance {
+  id: number
+  // eslint-disable-next-line no-use-before-define
+  client: AuthenticationClient
+}
+
+// eslint-disable-next-line @typescript-eslint/no-extraneous-class
+export class AuthenticationClientFactory {
+  private static instanceArray: AuthenticationClientInstance[] = []
+
+  /**
+   * The Singleton's constructor should always be private to prevent direct
+   * construction calls with the `new` operator.
+   */
+  // eslint-disable-next-line no-useless-constructor, @typescript-eslint/no-empty-function
+  private constructor() {}
+
+  private static createAuthenticationClient = (dbCom: DbFederatedCommunity) => {
+    switch (dbCom.apiVersion) {
+      case ApiVersionType.V1_0:
+        return new V1_0_AuthenticationClient(dbCom)
+      case ApiVersionType.V1_1:
+        return new V1_1_AuthenticationClient(dbCom)
+      default:
+        return null
+    }
+  }
+
+  /**
+   * The static method that controls the access to the singleton instance.
+   *
+   * This implementation let you subclass the Singleton class while keeping
+   * just one instance of each subclass around.
+   */
+  public static getInstance(dbCom: DbFederatedCommunity): AuthenticationClient | null {
+    const instance = AuthenticationClientFactory.instanceArray.find(
+      (instance) => instance.id === dbCom.id,
+    )
+    if (instance) {
+      return instance.client
+    }
+    const client = AuthenticationClientFactory.createAuthenticationClient(dbCom)
+    if (client) {
+      AuthenticationClientFactory.instanceArray.push({
+        id: dbCom.id,
+        client,
+      } as AuthenticationClientInstance)
+    }
+    return client
+  }
+}
diff --git a/federation/src/client/enum/ApiVersionType.ts b/federation/src/client/enum/ApiVersionType.ts
new file mode 100644
index 000000000..60da9de57
--- /dev/null
+++ b/federation/src/client/enum/ApiVersionType.ts
@@ -0,0 +1,4 @@
+export enum ApiVersionType {
+  V1_0 = '1_0',
+  V1_1 = '1_1',
+}
diff --git a/federation/src/graphql/api/1_0/model/AuthenticationArgs.ts b/federation/src/graphql/api/1_0/model/AuthenticationArgs.ts
new file mode 100644
index 000000000..5adc476a0
--- /dev/null
+++ b/federation/src/graphql/api/1_0/model/AuthenticationArgs.ts
@@ -0,0 +1,10 @@
+import { Field, InputType } from 'type-graphql'
+
+@InputType()
+export class AuthenticationArgs {
+  @Field(() => String)
+  oneTimeCode: string
+
+  @Field(() => String)
+  uuid: string
+}
diff --git a/federation/src/graphql/api/1_0/model/OpenConnectionArgs.ts b/federation/src/graphql/api/1_0/model/OpenConnectionArgs.ts
new file mode 100644
index 000000000..9afdbca5f
--- /dev/null
+++ b/federation/src/graphql/api/1_0/model/OpenConnectionArgs.ts
@@ -0,0 +1,10 @@
+import { Field, InputType } from 'type-graphql'
+
+@InputType()
+export class OpenConnectionArgs {
+  @Field(() => String)
+  publicKey: string
+
+  @Field(() => String)
+  url: string
+}
diff --git a/federation/src/graphql/api/1_0/model/OpenConnectionCallbackArgs.ts b/federation/src/graphql/api/1_0/model/OpenConnectionCallbackArgs.ts
new file mode 100644
index 000000000..461f6c3d7
--- /dev/null
+++ b/federation/src/graphql/api/1_0/model/OpenConnectionCallbackArgs.ts
@@ -0,0 +1,10 @@
+import { Field, InputType } from 'type-graphql'
+
+@InputType()
+export class OpenConnectionCallbackArgs {
+  @Field(() => String)
+  oneTimeCode: string
+
+  @Field(() => String)
+  url: string
+}
diff --git a/federation/src/graphql/api/1_0/resolver/AuthenticationResolver.ts b/federation/src/graphql/api/1_0/resolver/AuthenticationResolver.ts
new file mode 100644
index 000000000..8f7b510cf
--- /dev/null
+++ b/federation/src/graphql/api/1_0/resolver/AuthenticationResolver.ts
@@ -0,0 +1,79 @@
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+import { Arg, Mutation, Resolver } from 'type-graphql'
+import { federationLogger as logger } from '@/server/logger'
+import { Community as DbCommunity } from '@entity/Community'
+import { FederatedCommunity as DbFedCommunity } from '@entity/FederatedCommunity'
+import { LogError } from '@/server/LogError'
+import { OpenConnectionArgs } from '../model/OpenConnectionArgs'
+import { startAuthentication, startOpenConnectionCallback } from '../util/authenticateCommunity'
+import { OpenConnectionCallbackArgs } from '../model/OpenConnectionCallbackArgs'
+import { CONFIG } from '@/config'
+import { AuthenticationArgs } from '../model/AuthenticationArgs'
+
+@Resolver()
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+export class AuthenticationResolver {
+  @Mutation(() => Boolean)
+  async openConnection(
+    @Arg('data')
+    args: OpenConnectionArgs,
+  ): Promise<boolean> {
+    const pubKeyBuf = Buffer.from(args.publicKey, 'hex')
+    logger.debug(`Authentication: openConnection() via apiVersion=1_0:`, args)
+
+    // first find with args.publicKey the community 'comA', which starts openConnection request
+    const comA = await DbCommunity.findOneBy({
+      publicKey: pubKeyBuf, // Buffer.from(args.publicKey),
+    })
+    if (!comA) {
+      throw new LogError(`unknown requesting community with publicKey`, pubKeyBuf.toString('hex'))
+    }
+    logger.debug(`Authentication: found requestedCom:`, comA)
+    // no await to respond immediatly and invoke callback-request asynchron
+    void startOpenConnectionCallback(args, comA, CONFIG.FEDERATION_API)
+    return true
+  }
+
+  @Mutation(() => Boolean)
+  async openConnectionCallback(
+    @Arg('data')
+    args: OpenConnectionCallbackArgs,
+  ): Promise<boolean> {
+    logger.debug(`Authentication: openConnectionCallback() via apiVersion=1_0 ...`, args)
+    // TODO decrypt args.url with homeCom.privateKey and verify signing with callbackFedCom.publicKey
+    const endPoint = args.url.slice(0, args.url.lastIndexOf('/') + 1)
+    const apiVersion = args.url.slice(args.url.lastIndexOf('/') + 1, args.url.length)
+    logger.debug(`Authentication: search fedComB per:`, endPoint, apiVersion)
+    const fedComB = await DbFedCommunity.findOneBy({ endPoint, apiVersion })
+    if (!fedComB) {
+      throw new LogError(`unknown callback community with url`, args.url)
+    }
+    logger.debug(`Authentication: found fedComB and start authentication:`, fedComB)
+    // no await to respond immediatly and invoke authenticate-request asynchron
+    void startAuthentication(args.oneTimeCode, fedComB)
+    return true
+  }
+
+  @Mutation(() => String)
+  async authenticate(
+    @Arg('data')
+    args: AuthenticationArgs,
+  ): Promise<string | null> {
+    logger.debug(`Authentication: authenticate() via apiVersion=1_0 ...`, args)
+    const authCom = await DbCommunity.findOneByOrFail({ communityUuid: args.oneTimeCode })
+    logger.debug('Authentication: found authCom:', authCom)
+    if (authCom) {
+      // TODO decrypt args.uuid with authCom.publicKey
+      authCom.communityUuid = args.uuid
+      authCom.authenticatedAt = new Date()
+      await DbCommunity.save(authCom)
+      logger.debug('Authentication: store authCom.uuid successfully:', authCom)
+      const homeCom = await DbCommunity.findOneByOrFail({ foreign: false })
+      // TODO encrypt homeCom.uuid with homeCom.privateKey
+      if (homeCom.communityUuid) {
+        return homeCom.communityUuid
+      }
+    }
+    return null
+  }
+}
diff --git a/federation/src/graphql/api/1_0/resolver/PublicCommunityInfoResolver.ts b/federation/src/graphql/api/1_0/resolver/PublicCommunityInfoResolver.ts
index 3076edd41..339314f86 100644
--- a/federation/src/graphql/api/1_0/resolver/PublicCommunityInfoResolver.ts
+++ b/federation/src/graphql/api/1_0/resolver/PublicCommunityInfoResolver.ts
@@ -12,7 +12,7 @@ export class PublicCommunityInfoResolver {
     logger.debug(`getPublicCommunityInfo() via apiVersion=1_0 ...`)
     const homeCom = await DbCommunity.findOneByOrFail({ foreign: false })
     const result = new GetPublicCommunityInfoResult(homeCom)
-    logger.info(`getPublicCommunityInfo()-1_0... return publicInfo=${JSON.stringify(result)}`)
+    logger.debug(`getPublicCommunityInfo()-1_0... return publicInfo=${JSON.stringify(result)}`)
     return result
   }
 }
diff --git a/federation/src/graphql/api/1_0/resolver/PublicKeyResolver.ts b/federation/src/graphql/api/1_0/resolver/PublicKeyResolver.ts
index e741e95c3..bab0e25f5 100644
--- a/federation/src/graphql/api/1_0/resolver/PublicKeyResolver.ts
+++ b/federation/src/graphql/api/1_0/resolver/PublicKeyResolver.ts
@@ -16,7 +16,7 @@ export class PublicKeyResolver {
         apiVersion: '1_0',
       },
     })
-    logger.info(`getPublicKey()-1_0... return publicKey=${homeCom.publicKey}`)
+    logger.debug(`getPublicKey()-1_0... return publicKey=${homeCom.publicKey}`)
     return new GetPublicKeyResult(homeCom.publicKey.toString())
   }
 }
diff --git a/federation/src/graphql/api/1_0/util/authenticateCommunity.ts b/federation/src/graphql/api/1_0/util/authenticateCommunity.ts
new file mode 100644
index 000000000..0af3475ef
--- /dev/null
+++ b/federation/src/graphql/api/1_0/util/authenticateCommunity.ts
@@ -0,0 +1,99 @@
+import { OpenConnectionArgs } from '../model/OpenConnectionArgs'
+import { Community as DbCommunity } from '@entity/Community'
+import { FederatedCommunity as DbFedCommunity } from '@entity/FederatedCommunity'
+import { federationLogger as logger } from '@/server/logger'
+import { OpenConnectionCallbackArgs } from '../model/OpenConnectionCallbackArgs'
+// eslint-disable-next-line camelcase
+import { randombytes_random } from 'sodium-native'
+import { AuthenticationClientFactory } from '@/client/AuthenticationClientFactory'
+// eslint-disable-next-line camelcase
+import { AuthenticationClient as V1_0_AuthenticationClient } from '@/client/1_0/AuthenticationClient'
+import { AuthenticationArgs } from '../model/AuthenticationArgs'
+
+export async function startOpenConnectionCallback(
+  args: OpenConnectionArgs,
+  comA: DbCommunity,
+  api: string,
+): Promise<void> {
+  logger.debug(`Authentication: startOpenConnectionCallback() with:`, args, comA)
+  try {
+    const homeFedCom = await DbFedCommunity.findOneByOrFail({
+      foreign: false,
+      apiVersion: api,
+    })
+    const fedComA = await DbFedCommunity.findOneByOrFail({
+      foreign: true,
+      apiVersion: api,
+      publicKey: comA.publicKey,
+    })
+    const oneTimeCode = randombytes_random()
+    // store oneTimeCode in requestedCom.community_uuid as authenticate-request-identifier
+    comA.communityUuid = oneTimeCode.toString()
+    await DbCommunity.save(comA)
+    logger.debug(`Authentication: stored oneTimeCode in requestedCom:`, comA)
+
+    const client = AuthenticationClientFactory.getInstance(fedComA)
+    // eslint-disable-next-line camelcase
+    if (client instanceof V1_0_AuthenticationClient) {
+      const callbackArgs = new OpenConnectionCallbackArgs()
+      callbackArgs.oneTimeCode = oneTimeCode.toString()
+      // TODO encrypt callbackArgs.url with requestedCom.publicKey and sign it with homeCom.privateKey
+      callbackArgs.url = homeFedCom.endPoint.endsWith('/')
+        ? homeFedCom.endPoint + homeFedCom.apiVersion
+        : homeFedCom.endPoint + '/' + homeFedCom.apiVersion
+      logger.debug(`Authentication: start openConnectionCallback with args:`, callbackArgs)
+      if (await client.openConnectionCallback(callbackArgs)) {
+        logger.debug('Authentication: startOpenConnectionCallback() successful:', callbackArgs)
+      } else {
+        logger.error('Authentication: startOpenConnectionCallback() failed:', callbackArgs)
+      }
+    }
+  } catch (err) {
+    logger.error('Authentication: error in startOpenConnectionCallback:', err)
+  }
+}
+
+export async function startAuthentication(
+  oneTimeCode: string,
+  fedComB: DbFedCommunity,
+): Promise<void> {
+  logger.debug(`Authentication: startAuthentication()...`, oneTimeCode, fedComB)
+  try {
+    const homeCom = await DbCommunity.findOneByOrFail({ foreign: false })
+
+    // TODO encrypt homeCom.uuid with homeCom.privateKey and sign it with callbackFedCom.publicKey
+    const client = AuthenticationClientFactory.getInstance(fedComB)
+    // eslint-disable-next-line camelcase
+    if (client instanceof V1_0_AuthenticationClient) {
+      const authenticationArgs = new AuthenticationArgs()
+      authenticationArgs.oneTimeCode = oneTimeCode
+      // TODO encrypt callbackArgs.url with requestedCom.publicKey and sign it with homeCom.privateKey
+      if (homeCom.communityUuid) {
+        authenticationArgs.uuid = homeCom.communityUuid
+      }
+      logger.debug(`Authentication: invoke authenticate() with:`, authenticationArgs)
+      const fedComUuid = await client.authenticate(authenticationArgs)
+      logger.debug(`Authentication: response of authenticate():`, fedComUuid)
+      if (fedComUuid !== null) {
+        logger.debug(
+          `Authentication: received communityUUid for callbackFedCom:`,
+          fedComUuid,
+          fedComB,
+        )
+        const callbackCom = await DbCommunity.findOneByOrFail({
+          foreign: true,
+          publicKey: fedComB.publicKey,
+        })
+        // TODO decrypt fedComUuid with callbackFedCom.publicKey
+        callbackCom.communityUuid = fedComUuid
+        callbackCom.authenticatedAt = new Date()
+        await DbCommunity.save(callbackCom)
+        logger.debug('Authentication: Community Authentication successful:', callbackCom)
+      } else {
+        logger.error('Authentication: Community Authentication failed:', authenticationArgs)
+      }
+    }
+  } catch (err) {
+    logger.error('Authentication: error in startOpenConnectionCallback:', err)
+  }
+}
diff --git a/federation/src/graphql/api/1_0/util/revertSettledReceiveTransaction.ts b/federation/src/graphql/api/1_0/util/revertSettledReceiveTransaction.ts
index 4b0f989ba..4b1075cb2 100644
--- a/federation/src/graphql/api/1_0/util/revertSettledReceiveTransaction.ts
+++ b/federation/src/graphql/api/1_0/util/revertSettledReceiveTransaction.ts
@@ -96,7 +96,7 @@ export async function revertSettledReceiveTransaction(
       await queryRunner.manager.save(DbPendingTransaction, pendingTx)
 
       await queryRunner.commitTransaction()
-      logger.info(`commit revert settlement recipient Transaction successful...`)
+      logger.debug(`commit revert settlement recipient Transaction successful...`)
     } else {
       // TODO: if the last TX is not equivelant to pendingTX, the transactions must be corrected in EXPERT-MODE
       throw new LogError(
diff --git a/federation/src/graphql/api/1_0/util/settlePendingReceiveTransaction.ts b/federation/src/graphql/api/1_0/util/settlePendingReceiveTransaction.ts
index e0e600be9..e73e7a5fd 100644
--- a/federation/src/graphql/api/1_0/util/settlePendingReceiveTransaction.ts
+++ b/federation/src/graphql/api/1_0/util/settlePendingReceiveTransaction.ts
@@ -91,7 +91,7 @@ export async function settlePendingReceiveTransaction(
     await queryRunner.manager.save(DbPendingTransaction, pendingTx)
 
     await queryRunner.commitTransaction()
-    logger.info(`commit recipient Transaction successful...`)
+    logger.debug(`commit recipient Transaction successful...`)
 
     /*
     await EVENT_TRANSACTION_SEND(sender, recipient, transactionSend, transactionSend.amount)
diff --git a/federation/src/graphql/schema.ts b/federation/src/graphql/schema.ts
index 0951c1000..9d39f1398 100644
--- a/federation/src/graphql/schema.ts
+++ b/federation/src/graphql/schema.ts
@@ -11,6 +11,16 @@ const schema = async (): Promise<GraphQLSchema> => {
     resolvers: [getApiResolvers()],
     // authChecker: isAuthorized,
     scalarsMap: [{ type: Decimal, scalar: DecimalScalar }],
+    /*
+    validate: {
+      validationError: { target: false },
+      skipMissingProperties: true,
+      skipNullProperties: true,
+      skipUndefinedProperties: false,
+      forbidUnknownValues: true,
+      stopAtFirstError: true,
+    },
+    */
   })
 }
 
diff --git a/federation/test/helpers.ts b/federation/test/helpers.ts
index 3b05edf4d..67feea5fa 100644
--- a/federation/test/helpers.ts
+++ b/federation/test/helpers.ts
@@ -4,6 +4,7 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/no-unsafe-call */
 /* eslint-disable @typescript-eslint/no-unsafe-return */
+
 import { entities } from '@entity/index'
 import { createTestClient } from 'apollo-server-testing'
 
@@ -31,8 +32,8 @@ export const cleanDB = async () => {
   }
 }
 
-export const testEnvironment = async (testLogger = logger) => {
-  const server = await createServer(testLogger) // context, testLogger, testI18n)
+export const testEnvironment = async (testLogger = logger /*, testI18n = i18n */) => {
+  const server = await createServer(/* context, */ testLogger /* , testI18n */)
   const con = server.con
   const testClient = createTestClient(server.apollo)
   const mutate = testClient.mutate
diff --git a/federation/test/testSetup.ts b/federation/test/testSetup.ts
index 4341a1b49..85008799f 100644
--- a/federation/test/testSetup.ts
+++ b/federation/test/testSetup.ts
@@ -1,9 +1,14 @@
+// import { CONFIG } from '@/config'
+// import { i18n } from '@/server/localization'
 import { federationLogger as logger } from '@/server/logger'
 
+// CONFIG.EMAIL = true
+// CONFIG.EMAIL_TEST_MODUS = false
+
 jest.setTimeout(1000000)
 
 jest.mock('@/server/logger', () => {
-  const originalModule = jest.requireActual('@/server/logger')
+  const originalModule = jest.requireActual<typeof logger>('@/server/logger')
   return {
     __esModule: true,
     ...originalModule,
@@ -19,4 +24,20 @@ jest.mock('@/server/logger', () => {
   }
 })
 
+/*
+jest.mock('@/server/localization', () => {
+  const originalModule = jest.requireActual<typeof i18n>('@/server/localization')
+  return {
+    __esModule: true,
+    ...originalModule,
+    i18n: {
+      init: jest.fn(),
+      // configure: jest.fn(),
+      // __: jest.fn(),
+      // setLocale: jest.fn(),
+    },
+  }
+})
+*/
+
 export { logger }
diff --git a/federation/yarn.lock b/federation/yarn.lock
index 87bd7f0d4..ca33138dd 100644
--- a/federation/yarn.lock
+++ b/federation/yarn.lock
@@ -374,6 +374,11 @@
   resolved "https://registry.yarnpkg.com/@eslint/js/-/js-8.42.0.tgz#484a1d638de2911e6f5a30c12f49c7e4a3270fb6"
   integrity sha512-6SWlXpWU5AvId8Ac7zjzmIOqMOba/JWY8XZ4A7q7Gn1Vlfg/SFFIlrtHXt9nPn4op9ZPAkl91Jao+QQv3r/ukw==
 
+"@graphql-typed-document-node/core@^3.1.1":
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/@graphql-typed-document-node/core/-/core-3.2.0.tgz#5f3d96ec6b2354ad6d8a28bf216a1d97b5426861"
+  integrity sha512-mB9oAsNCm9aM3/SOv4YtBMqZbYj10R7dkq8byBqxGY/ncFwhf2oQzMV+LCRlWoDSEBJ3COiR1yeDvMtsoOsuFQ==
+
 "@humanwhocodes/config-array@^0.11.10":
   version "0.11.10"
   resolved "https://registry.yarnpkg.com/@humanwhocodes/config-array/-/config-array-0.11.10.tgz#5a3ffe32cc9306365fb3fd572596cd602d5e12d2"
@@ -1052,12 +1057,19 @@
     "@types/mime" "*"
     "@types/node" "*"
 
+"@types/sodium-native@^2.3.5":
+  version "2.3.7"
+  resolved "https://registry.yarnpkg.com/@types/sodium-native/-/sodium-native-2.3.7.tgz#fdcbd026e9a730e574e69ccb85fd36fd50220a8c"
+  integrity sha512-VlwblVfVHizegm0QJX0Hgna+w7P9z5Gy+LYkO7EWlOj7tew2kj1csq8ziGMiruL+dm/WjRwaoGuE6STV+0bN2g==
+  dependencies:
+    "@types/node" "*"
+
 "@types/stack-utils@^2.0.0":
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/@types/stack-utils/-/stack-utils-2.0.1.tgz#20f18294f797f2209b5f65c8e3b5c8e8261d127c"
   integrity sha512-Hl219/BT5fLAaz6NDkSuhzasy49dwQS/DSdu4MdggFB8zcXv7vflBI3xp7FEmkmdDkBUI2bPUNeMttp2knYdxw==
 
-"@types/uuid@8.3.4":
+"@types/uuid@^8.3.4":
   version "8.3.4"
   resolved "https://registry.yarnpkg.com/@types/uuid/-/uuid-8.3.4.tgz#bd86a43617df0594787d38b735f55c805becf1bc"
   integrity sha512-c/I8ZRb51j+pYGAu5CrFMRxqZ2ke4y2grEBO5AUjgSkSk+qT2Ea+OdWElz/OiMf5MNpn2b17kuVBwZLQJXzihw==
@@ -1948,6 +1960,13 @@ cross-env@^7.0.3:
   dependencies:
     cross-spawn "^7.0.1"
 
+cross-fetch@^3.1.5:
+  version "3.1.8"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-3.1.8.tgz#0327eba65fd68a7d119f8fb2bf9334a1a7956f82"
+  integrity sha512-cvA+JwZoU0Xq+h6WkMvAUqPEYy92Obet6UdKLfW60qn99ftItKjB5T+BkyWOFWe2pUyfQ+IJHmpOTznqk1M6Kg==
+  dependencies:
+    node-fetch "^2.6.12"
+
 cross-spawn@^7.0.1, cross-spawn@^7.0.2, cross-spawn@^7.0.3:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
@@ -2678,6 +2697,11 @@ express@^4.17.1:
     utils-merge "1.0.1"
     vary "~1.1.2"
 
+extract-files@^9.0.0:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/extract-files/-/extract-files-9.0.0.tgz#8a7744f2437f81f5ed3250ed9f1550de902fe54a"
+  integrity sha512-CvdFfHkC95B4bBBk36hcEmvdR2awOdhhVUYH6S/zrVj3477zven/fJMYg7121h4T1xHZC+tetUpubpAhxwI7hQ==
+
 fast-deep-equal@^3.1.1, fast-deep-equal@^3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
@@ -3017,6 +3041,16 @@ graphql-query-complexity@^0.7.0:
   dependencies:
     lodash.get "^4.4.2"
 
+graphql-request@5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/graphql-request/-/graphql-request-5.0.0.tgz#7504a807d0e11be11a3c448e900f0cc316aa18ef"
+  integrity sha512-SpVEnIo2J5k2+Zf76cUkdvIRaq5FMZvGQYnA4lUWYbc99m+fHh4CZYRRO/Ff4tCLQ613fzCm3SiDT64ubW5Gyw==
+  dependencies:
+    "@graphql-typed-document-node/core" "^3.1.1"
+    cross-fetch "^3.1.5"
+    extract-files "^9.0.0"
+    form-data "^3.0.0"
+
 graphql-subscriptions@^1.0.0, graphql-subscriptions@^1.1.0:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/graphql-subscriptions/-/graphql-subscriptions-1.2.1.tgz#2142b2d729661ddf967b7388f7cf1dd4cf2e061d"
@@ -3024,7 +3058,7 @@ graphql-subscriptions@^1.0.0, graphql-subscriptions@^1.1.0:
   dependencies:
     iterall "^1.3.0"
 
-graphql-tag@^2.11.0:
+graphql-tag@^2.11.0, graphql-tag@^2.12.6:
   version "2.12.6"
   resolved "https://registry.yarnpkg.com/graphql-tag/-/graphql-tag-2.12.6.tgz#d441a569c1d2537ef10ca3d1633b48725329b5f1"
   integrity sha512-FdSNcu2QQcWnM2VNvSCCDCVS5PpPqpzgFT8+GXzqJuoDd0CBncxCY278u4mhRO7tMgo2JjgJA5aZ+nWSQ/Z+xg==
@@ -4228,6 +4262,18 @@ node-fetch@^2.6.1:
   dependencies:
     whatwg-url "^5.0.0"
 
+node-fetch@^2.6.12:
+  version "2.7.0"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.7.0.tgz#d0f0fa6e3e2dc1d27efcd8ad99d550bda94d187d"
+  integrity sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==
+  dependencies:
+    whatwg-url "^5.0.0"
+
+node-gyp-build@^4.3.0:
+  version "4.6.1"
+  resolved "https://registry.yarnpkg.com/node-gyp-build/-/node-gyp-build-4.6.1.tgz#24b6d075e5e391b8d5539d98c7fc5c210cac8a3e"
+  integrity sha512-24vnklJmyRS8ViBNI8KbtK/r/DmXQMRiOMXTNz2nrTnAYUwjmEEbnnpB/+kt+yWRv73bPsSPRFddrcIbAxSiMQ==
+
 node-int64@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
@@ -4537,10 +4583,10 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@^2.3.1:
-  version "2.8.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.2.tgz#c4ea1b5b454d7c4b59966db2e06ed7eec5dfd160"
-  integrity sha512-BtRV9BcncDyI2tsuS19zzhzoxD8Dh8LiCx7j7tHzrkz8GFXAexeWFdi22mjE1d16dftH2qNaytVxqiRTGlMfpw==
+prettier@^2.8.7:
+  version "2.8.8"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.8.8.tgz#e8c5d7e98a4305ffe3de2e1fc4aca1a71c28b1da"
+  integrity sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==
 
 pretty-format@^27.0.0, pretty-format@^27.5.1:
   version "27.5.1"
@@ -4943,6 +4989,13 @@ slash@^4.0.0:
   resolved "https://registry.yarnpkg.com/slash/-/slash-4.0.0.tgz#2422372176c4c6c5addb5e2ada885af984b396a7"
   integrity sha512-3dOsAHXXUkQTpOYcoAxLIorMTp4gIQr5IW3iVb7A7lFIp0VHhnynm9izx6TssdrIcVIESAlVjtnO2K8bg+Coew==
 
+sodium-native@^3.3.0:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/sodium-native/-/sodium-native-3.4.1.tgz#44616c07ccecea15195f553af88b3e574b659741"
+  integrity sha512-PaNN/roiFWzVVTL6OqjzYct38NSXewdl2wz8SRB51Br/MLIJPrbM3XexhVWkq7D3UWMysfrhKVf1v1phZq6MeQ==
+  dependencies:
+    node-gyp-build "^4.3.0"
+
 source-map-support@^0.5.6:
   version "0.5.21"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.21.tgz#04fe7c7f9e1ed2d662233c28cb2b35b9f63f6e4f"