diff --git a/dlt-connector/jest.config.js b/dlt-connector/jest.config.js
index 2de18cf50..3d731787f 100644
--- a/dlt-connector/jest.config.js
+++ b/dlt-connector/jest.config.js
@@ -6,7 +6,7 @@ module.exports = {
   collectCoverageFrom: ['src/**/*.ts', '!**/node_modules/**', '!src/seeds/**', '!build/**'],
   coverageThreshold: {
     global: {
-      lines: 71,
+      lines: 75,
     },
   },
   setupFiles: ['<rootDir>/test/testSetup.ts'],
diff --git a/dlt-connector/package.json b/dlt-connector/package.json
index 8b5ae357c..7c8644150 100644
--- a/dlt-connector/package.json
+++ b/dlt-connector/package.json
@@ -39,7 +39,8 @@
     "reflect-metadata": "^0.1.13",
     "sodium-native": "^4.0.4",
     "tsconfig-paths": "^4.1.2",
-    "type-graphql": "^2.0.0-beta.2"
+    "type-graphql": "^2.0.0-beta.2",
+    "uuid": "^9.0.1"
   },
   "devDependencies": {
     "@eslint-community/eslint-plugin-eslint-comments": "^3.2.1",
diff --git a/dlt-connector/src/data/Transaction.logic.test.ts b/dlt-connector/src/data/Transaction.logic.test.ts
index c652fe794..fe9c2c085 100644
--- a/dlt-connector/src/data/Transaction.logic.test.ts
+++ b/dlt-connector/src/data/Transaction.logic.test.ts
@@ -6,12 +6,12 @@ import { logger } from '@/logging/logger'
 
 import { CommunityRoot } from './proto/3_3/CommunityRoot'
 import { CrossGroupType } from './proto/3_3/enum/CrossGroupType'
+import { GradidoCreation } from './proto/3_3/GradidoCreation'
+import { GradidoDeferredTransfer } from './proto/3_3/GradidoDeferredTransfer'
 import { GradidoTransfer } from './proto/3_3/GradidoTransfer'
 import { RegisterAddress } from './proto/3_3/RegisterAddress'
 import { TransactionBody } from './proto/3_3/TransactionBody'
 import { TransactionLogic } from './Transaction.logic'
-import { GradidoCreation } from './proto/3_3/GradidoCreation'
-import { GradidoDeferredTransfer } from './proto/3_3/GradidoDeferredTransfer'
 
 let a: Transaction
 let b: Transaction
diff --git a/dlt-connector/src/graphql/input/CommunityDraft.ts b/dlt-connector/src/graphql/input/CommunityDraft.ts
index 0b26e68d0..665e10b75 100644
--- a/dlt-connector/src/graphql/input/CommunityDraft.ts
+++ b/dlt-connector/src/graphql/input/CommunityDraft.ts
@@ -1,9 +1,10 @@
 // https://www.npmjs.com/package/@apollo/protobufjs
 
-import { isValidDateString } from '@validator/DateString'
 import { IsBoolean, IsUUID } from 'class-validator'
 import { Field, InputType } from 'type-graphql'
 
+import { isValidDateString } from '@validator/DateString'
+
 @InputType()
 export class CommunityDraft {
   @Field(() => String)
diff --git a/dlt-connector/src/interactions/backendToDb/community/AddCommunity.context.test.ts b/dlt-connector/src/interactions/backendToDb/community/AddCommunity.context.test.ts
index fec2273b6..d7ec4e9c6 100644
--- a/dlt-connector/src/interactions/backendToDb/community/AddCommunity.context.test.ts
+++ b/dlt-connector/src/interactions/backendToDb/community/AddCommunity.context.test.ts
@@ -1,5 +1,6 @@
 import 'reflect-metadata'
 import { Community } from '@entity/Community'
+
 import { TestDB } from '@test/TestDB'
 
 import { CONFIG } from '@/config'
diff --git a/dlt-connector/src/interactions/backendToDb/transaction/CreateTransactionRecipe.context.test.ts b/dlt-connector/src/interactions/backendToDb/transaction/CreateTransactionRecipe.context.test.ts
index 9ddbebd06..0382632b3 100644
--- a/dlt-connector/src/interactions/backendToDb/transaction/CreateTransactionRecipe.context.test.ts
+++ b/dlt-connector/src/interactions/backendToDb/transaction/CreateTransactionRecipe.context.test.ts
@@ -1,9 +1,10 @@
 import 'reflect-metadata'
 import { Account } from '@entity/Account'
-import { TestDB } from '@test/TestDB'
 import { Decimal } from 'decimal.js-light'
 import { v4 } from 'uuid'
 
+import { TestDB } from '@test/TestDB'
+
 import { CONFIG } from '@/config'
 import { KeyPair } from '@/data/KeyPair'
 import { Mnemonic } from '@/data/Mnemonic'
diff --git a/dlt-connector/src/interactions/transmitToIota/TransmitToIota.context.test.ts b/dlt-connector/src/interactions/transmitToIota/TransmitToIota.context.test.ts
index 8e1ba4f33..94a8e4f9d 100644
--- a/dlt-connector/src/interactions/transmitToIota/TransmitToIota.context.test.ts
+++ b/dlt-connector/src/interactions/transmitToIota/TransmitToIota.context.test.ts
@@ -1,9 +1,10 @@
 import 'reflect-metadata'
 import { Account } from '@entity/Account'
-import { TestDB } from '@test/TestDB'
 import { Decimal } from 'decimal.js-light'
 import { v4 } from 'uuid'
 
+import { TestDB } from '@test/TestDB'
+
 import { CONFIG } from '@/config'
 import { KeyPair } from '@/data/KeyPair'
 import { Mnemonic } from '@/data/Mnemonic'
diff --git a/dlt-connector/src/utils/typeConverter.test.ts b/dlt-connector/src/utils/typeConverter.test.ts
index d9b1c2356..4caee94bb 100644
--- a/dlt-connector/src/utils/typeConverter.test.ts
+++ b/dlt-connector/src/utils/typeConverter.test.ts
@@ -1,13 +1,45 @@
 import 'reflect-metadata'
+
 import { Timestamp } from '@/data/proto/3_3/Timestamp'
 
-import { timestampToDate } from './typeConverter'
+import {
+  base64ToBuffer,
+  iotaTopicFromCommunityUUID,
+  timestampSecondsToDate,
+  timestampToDate,
+  uuid4ToBuffer,
+} from './typeConverter'
 
 describe('utils/typeConverter', () => {
+  it('uuid4ToBuffer', () => {
+    expect(uuid4ToBuffer('4f28e081-5c39-4dde-b6a4-3bde71de8d65')).toStrictEqual(
+      Buffer.from('4f28e0815c394ddeb6a43bde71de8d65', 'hex'),
+    )
+  })
+
+  it('iotaTopicFromCommunityUUID', () => {
+    expect(iotaTopicFromCommunityUUID('4f28e081-5c39-4dde-b6a4-3bde71de8d65')).toBe(
+      '3138b3590311fdf0a823e173caa9487b7d275c23fab07106b4b1364cb038affd',
+    )
+  })
+
   it('timestampToDate', () => {
-    const now = new Date('Thu, 05 Oct 2023 11:55:18 +0000')
+    const now = new Date('Thu, 05 Oct 2023 11:55:18.102 +0000')
     const timestamp = new Timestamp(now)
     expect(timestamp.seconds).toBe(Math.round(now.getTime() / 1000))
     expect(timestampToDate(timestamp)).toEqual(now)
   })
+
+  it('timestampSecondsToDate', () => {
+    const now = new Date('Thu, 05 Oct 2023 11:55:18.102 +0000')
+    const timestamp = new Timestamp(now)
+    expect(timestamp.seconds).toBe(Math.round(now.getTime() / 1000))
+    expect(timestampSecondsToDate(timestamp)).toEqual(new Date('Thu, 05 Oct 2023 11:55:18 +0000'))
+  })
+
+  it('base64ToBuffer', () => {
+    expect(base64ToBuffer('MTizWQMR/fCoI+FzyqlIe30nXCP6sHEGtLE2TLA4r/0=')).toStrictEqual(
+      Buffer.from('3138b3590311fdf0a823e173caa9487b7d275c23fab07106b4b1364cb038affd', 'hex'),
+    )
+  })
 })
diff --git a/dlt-connector/yarn.lock b/dlt-connector/yarn.lock
index 6d50426b1..7f46d88bc 100644
--- a/dlt-connector/yarn.lock
+++ b/dlt-connector/yarn.lock
@@ -6388,7 +6388,7 @@ uuid@^8.3.2:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
   integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
 
-uuid@^9.0.0:
+uuid@^9.0.0, uuid@^9.0.1:
   version "9.0.1"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-9.0.1.tgz#e188d4c8853cc722220392c424cd637f32293f30"
   integrity sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==