diff --git a/app/build.gradle b/app/build.gradle
index 8a6b052b8..19e9f9fd1 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -38,7 +38,7 @@ static def generateVersionCode() {
 android {
     defaultConfig {
         applicationId "nl.tudelft.trustchain"
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
         versionCode generateVersionCode()
diff --git a/app/src/main/java/nl/tudelft/trustchain/app/TrustChainApplication.kt b/app/src/main/java/nl/tudelft/trustchain/app/TrustChainApplication.kt
index 79418719c..126eab19d 100644
--- a/app/src/main/java/nl/tudelft/trustchain/app/TrustChainApplication.kt
+++ b/app/src/main/java/nl/tudelft/trustchain/app/TrustChainApplication.kt
@@ -5,7 +5,6 @@ import android.bluetooth.BluetoothManager
 import android.content.Context
 import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import androidx.core.content.getSystemService
 import androidx.datastore.core.DataStore
 import androidx.datastore.preferences.core.Preferences
@@ -79,7 +78,6 @@ class TrustChainApplication : Application() {
     var isFirstRun: Boolean = false
     lateinit var appLoader: AppLoader
 
-    @RequiresApi(Build.VERSION_CODES.M)
     override fun onCreate() =
         runBlocking {
             super.onCreate()
@@ -95,7 +93,6 @@ class TrustChainApplication : Application() {
             }
         }
 
-    @RequiresApi(Build.VERSION_CODES.M)
     fun initIPv8() {
         val config =
             IPv8Configuration(
diff --git a/app/src/main/java/nl/tudelft/trustchain/app/service/TrustChainService.kt b/app/src/main/java/nl/tudelft/trustchain/app/service/TrustChainService.kt
index f90861edd..bceee139b 100644
--- a/app/src/main/java/nl/tudelft/trustchain/app/service/TrustChainService.kt
+++ b/app/src/main/java/nl/tudelft/trustchain/app/service/TrustChainService.kt
@@ -2,23 +2,16 @@ package nl.tudelft.trustchain.app.service
 
 import android.app.PendingIntent
 import android.content.Intent
-import android.os.Build
 import androidx.core.app.NotificationCompat
 import androidx.core.app.TaskStackBuilder
-import androidx.annotation.RequiresApi
 import nl.tudelft.ipv8.android.service.IPv8Service
 import nl.tudelft.trustchain.app.R
 import nl.tudelft.trustchain.app.ui.dashboard.DashboardActivity
 
-@RequiresApi(Build.VERSION_CODES.M)
 class TrustChainService : IPv8Service() {
     override fun createNotification(): NotificationCompat.Builder {
         val trustChainDashboardIntent = Intent(this, DashboardActivity::class.java)
-        val flags =
-            when {
-                Build.VERSION.SDK_INT >= Build.VERSION_CODES.M -> PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
-                else -> PendingIntent.FLAG_UPDATE_CURRENT
-            }
+        val flags = PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
         val pendingIntent =
             TaskStackBuilder.create(this)
                 .addNextIntentWithParentStack(trustChainDashboardIntent)
diff --git a/app/src/main/java/nl/tudelft/trustchain/app/ui/dashboard/DashboardActivity.kt b/app/src/main/java/nl/tudelft/trustchain/app/ui/dashboard/DashboardActivity.kt
index 321879335..f0bab6d73 100644
--- a/app/src/main/java/nl/tudelft/trustchain/app/ui/dashboard/DashboardActivity.kt
+++ b/app/src/main/java/nl/tudelft/trustchain/app/ui/dashboard/DashboardActivity.kt
@@ -7,7 +7,6 @@ import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.provider.Settings
-import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AppCompatActivity
 import androidx.recyclerview.widget.GridLayoutManager
 import com.mattskala.itemadapter.ItemAdapter
@@ -17,7 +16,6 @@ import nl.tudelft.trustchain.app.TrustChainApplication
 import nl.tudelft.trustchain.app.databinding.ActivityDashboardBinding
 import nl.tudelft.trustchain.common.util.viewBinding
 
-@RequiresApi(Build.VERSION_CODES.M)
 class DashboardActivity : AppCompatActivity() {
     private val binding by viewBinding(ActivityDashboardBinding::inflate)
 
diff --git a/common-bitcoin/build.gradle b/common-bitcoin/build.gradle
index 3bd1cc903..92ed14c58 100644
--- a/common-bitcoin/build.gradle
+++ b/common-bitcoin/build.gradle
@@ -14,7 +14,7 @@ ktlint {
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/common-ethereum/build.gradle b/common-ethereum/build.gradle
index d75d5168d..b55f052f2 100644
--- a/common-ethereum/build.gradle
+++ b/common-ethereum/build.gradle
@@ -14,7 +14,7 @@ ktlint {
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/common/build.gradle b/common/build.gradle
index 33f9b3a21..973cb5902 100644
--- a/common/build.gradle
+++ b/common/build.gradle
@@ -23,7 +23,7 @@ sqldelight {
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/currencyii/build.gradle b/currencyii/build.gradle
index 7cce15b57..6cf6a97b9 100644
--- a/currencyii/build.gradle
+++ b/currencyii/build.gradle
@@ -13,7 +13,7 @@ ktlint {
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/debug/build.gradle b/debug/build.gradle
index eb2056cb7..915460931 100644
--- a/debug/build.gradle
+++ b/debug/build.gradle
@@ -12,7 +12,7 @@ ktlint {
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/eurotoken/build.gradle b/eurotoken/build.gradle
index 9dfcc3a60..7fbefdc89 100644
--- a/eurotoken/build.gradle
+++ b/eurotoken/build.gradle
@@ -23,7 +23,7 @@ sqldelight {
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/community/EuroTokenCommunity.kt b/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/community/EuroTokenCommunity.kt
index a5d82bde7..c2fa35844 100644
--- a/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/community/EuroTokenCommunity.kt
+++ b/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/community/EuroTokenCommunity.kt
@@ -1,7 +1,6 @@
 package nl.tudelft.trustchain.eurotoken.community
 
 import android.content.Context
-import androidx.annotation.RequiresApi
 import kotlin.random.Random
 import nl.tudelft.ipv8.Community
 import nl.tudelft.ipv8.IPv4Address
@@ -88,7 +87,6 @@ class EuroTokenCommunity(
         transactionRepository.attemptRollback(peer, payload.transactionHash)
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     fun connectToGateway(
         public_key: String,
         ip: String,
diff --git a/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/ui/exchange/CreateMoneyFragment.kt b/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/ui/exchange/CreateMoneyFragment.kt
index 8594ad300..5987c4875 100644
--- a/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/ui/exchange/CreateMoneyFragment.kt
+++ b/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/ui/exchange/CreateMoneyFragment.kt
@@ -3,7 +3,6 @@ package nl.tudelft.trustchain.eurotoken.ui.exchange
 import android.content.Context
 import android.os.Bundle
 import android.view.View
-import androidx.annotation.RequiresApi
 import androidx.navigation.fragment.findNavController
 import nl.tudelft.ipv8.keyvault.defaultCryptoProvider
 import nl.tudelft.ipv8.util.hexToBytes
@@ -39,8 +38,6 @@ class CreateMoneyFragment : EurotokenBaseFragment(R.layout.fragment_create_money
             ?: throw java.lang.IllegalStateException("EuroTokenCommunity is not configured")
     }
 
-
-    @RequiresApi(Build.VERSION_CODES.O)
     override fun onViewCreated(
         view: View,
         savedInstanceState: Bundle?
diff --git a/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/ui/exchange/ExchangeFragment.kt b/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/ui/exchange/ExchangeFragment.kt
index 0868d6373..31f3b87a5 100644
--- a/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/ui/exchange/ExchangeFragment.kt
+++ b/eurotoken/src/main/java/nl/tudelft/trustchain/eurotoken/ui/exchange/ExchangeFragment.kt
@@ -2,7 +2,6 @@ package nl.tudelft.trustchain.eurotoken.ui.exchange
 
 import android.content.Context
 import android.content.Intent
-import android.os.Build
 import android.os.Bundle
 import android.text.Editable
 import android.text.TextWatcher
@@ -11,7 +10,6 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.EditText
 import android.widget.Toast
-import androidx.annotation.RequiresApi
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.findNavController
@@ -66,7 +64,7 @@ class ExchangeFragment : EurotokenBaseFragment() {
         _binding = null
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
+    @Deprecated("Deprecated in Java")
     override fun onActivityResult(
         requestCode: Int,
         resultCode: Int,
@@ -85,31 +83,43 @@ class ExchangeFragment : EurotokenBaseFragment() {
             try {
                 val connectionData = ConnectionData(it)
                 Toast.makeText(requireContext(), connectionData.ip, Toast.LENGTH_LONG).show()
-                if (connectionData.type == "destruction") {
-                    val args = Bundle()
-                    args.putString(DestroyMoneyFragment.ARG_PUBLIC_KEY, connectionData.publicKey)
-                    args.putString(DestroyMoneyFragment.ARG_NAME, connectionData.name)
-                    args.putLong(DestroyMoneyFragment.ARG_AMOUNT, connectionData.amount)
-                    args.putInt(DestroyMoneyFragment.ARG_PORT, connectionData.port)
-                    args.putString(DestroyMoneyFragment.ARG_IP, connectionData.ip)
-                    args.putString(DestroyMoneyFragment.ARG_PAYMENT_ID, connectionData.paymentId)
-                    findNavController().navigate(
-                        R.id.action_exchangeFragment_to_destroyMoneyFragment,
-                        args
-                    )
-                } else if (connectionData.type == "creation") {
-                    val args = Bundle()
-                    args.putString(CreateMoneyFragment.ARG_PUBLIC_KEY, connectionData.publicKey)
-                    args.putString(CreateMoneyFragment.ARG_NAME, connectionData.name)
-                    args.putInt(CreateMoneyFragment.ARG_PORT, connectionData.port)
-                    args.putString(CreateMoneyFragment.ARG_IP, connectionData.ip)
-                    args.putString(CreateMoneyFragment.ARG_PAYMENT_ID, connectionData.paymentId)
-                    findNavController().navigate(
-                        R.id.action_exchangeFragment_to_createMoneyFragment,
-                        args
-                    )
-                } else {
-                    Toast.makeText(requireContext(), "Invalid QR", Toast.LENGTH_LONG).show()
+                when (connectionData.type) {
+                    "destruction" -> {
+                        val args = Bundle()
+                        args.putString(
+                            DestroyMoneyFragment.ARG_PUBLIC_KEY,
+                            connectionData.publicKey
+                        )
+                        args.putString(DestroyMoneyFragment.ARG_NAME, connectionData.name)
+                        args.putLong(DestroyMoneyFragment.ARG_AMOUNT, connectionData.amount)
+                        args.putInt(DestroyMoneyFragment.ARG_PORT, connectionData.port)
+                        args.putString(DestroyMoneyFragment.ARG_IP, connectionData.ip)
+                        args.putString(
+                            DestroyMoneyFragment.ARG_PAYMENT_ID,
+                            connectionData.paymentId
+                        )
+                        findNavController().navigate(
+                            R.id.action_exchangeFragment_to_destroyMoneyFragment,
+                            args
+                        )
+                    }
+
+                    "creation" -> {
+                        val args = Bundle()
+                        args.putString(CreateMoneyFragment.ARG_PUBLIC_KEY, connectionData.publicKey)
+                        args.putString(CreateMoneyFragment.ARG_NAME, connectionData.name)
+                        args.putInt(CreateMoneyFragment.ARG_PORT, connectionData.port)
+                        args.putString(CreateMoneyFragment.ARG_IP, connectionData.ip)
+                        args.putString(CreateMoneyFragment.ARG_PAYMENT_ID, connectionData.paymentId)
+                        findNavController().navigate(
+                            R.id.action_exchangeFragment_to_createMoneyFragment,
+                            args
+                        )
+                    }
+
+                    else -> {
+                        Toast.makeText(requireContext(), "Invalid QR", Toast.LENGTH_LONG).show()
+                    }
                 }
             } catch (e: JSONException) {
                 Toast.makeText(requireContext(), "Scan failed, try again", Toast.LENGTH_LONG).show()
diff --git a/freedomOfComputing/build.gradle b/freedomOfComputing/build.gradle
index cfda22679..84129d1ca 100644
--- a/freedomOfComputing/build.gradle
+++ b/freedomOfComputing/build.gradle
@@ -12,7 +12,7 @@ ktlint {
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/freedomOfComputing/src/main/java/nl/tudelft/trustchain/FOC/ExecutionActivity.java b/freedomOfComputing/src/main/java/nl/tudelft/trustchain/FOC/ExecutionActivity.java
index e0df12d4b..877cba798 100644
--- a/freedomOfComputing/src/main/java/nl/tudelft/trustchain/FOC/ExecutionActivity.java
+++ b/freedomOfComputing/src/main/java/nl/tudelft/trustchain/FOC/ExecutionActivity.java
@@ -62,7 +62,6 @@ private void storeState() {
      *
      * @return the latest known state of the dynamically loaded code or null if it does not exist
      */
-    @RequiresApi(Build.VERSION_CODES.O) // TODO: this should be usable on all versions.
     private Fragment.SavedState getState() {
         // states are stored in the same directories as apks themselves (in the app specific files)
         String fileName = this.apkName + DATA_DOT_EXTENSION;
@@ -127,11 +126,9 @@ protected void onCreate(Bundle savedInstanceState) {
             String mainFragmentClass = getMainFragmentClass(apkPath);
             Class<?> fragmentClass = classLoader.loadClass((mainFragmentClass != null) ? mainFragmentClass : "com.execmodule." + activeApp + ".MainFragment");
             this.mainFragment = (Fragment) fragmentClass.newInstance();
-            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
-                Fragment.SavedState state = this.getState();
-                if (state != null) {
-                    this.mainFragment.setInitialSavedState(state);
-                }
+            Fragment.SavedState state = this.getState();
+            if (state != null) {
+                this.mainFragment.setInitialSavedState(state);
             }
 
             LinearLayout tmpLayout = new LinearLayout(context);
diff --git a/musicdao/build.gradle b/musicdao/build.gradle
index 9e59487d9..811b06078 100644
--- a/musicdao/build.gradle
+++ b/musicdao/build.gradle
@@ -25,7 +25,7 @@ android {
     useLibrary 'android.test.mock'
 
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/AppContainer.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/AppContainer.kt
index 66b842b36..dfe2fcace 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/AppContainer.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/AppContainer.kt
@@ -1,14 +1,11 @@
 package nl.tudelft.trustchain.musicdao
 
 import android.net.Uri
-import android.os.Build
-import androidx.annotation.RequiresApi
 
 object AppContainer {
     lateinit var currentCallback: (List<Uri>) -> Unit
     lateinit var activity: MusicActivity
 
-    @RequiresApi(Build.VERSION_CODES.O)
     fun provide(_activity: MusicActivity) {
         activity = _activity
     }
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/HiltModules.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/HiltModules.kt
index d8a01a5ec..7d162082f 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/HiltModules.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/HiltModules.kt
@@ -1,9 +1,7 @@
 package nl.tudelft.trustchain.musicdao
 
 import android.content.Context
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import androidx.preference.PreferenceManager
 import androidx.room.Room
 import nl.tudelft.trustchain.musicdao.core.cache.CacheDatabase
@@ -109,7 +107,6 @@ class HiltModules {
             ?: throw IllegalStateException("DaoCommunity is not configured")
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     @Provides
     @Singleton
     fun path(
@@ -118,7 +115,6 @@ class HiltModules {
         return CachePath(applicationContext)
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     @Provides
     @Singleton
     fun downloadFinishUseCase(
@@ -128,7 +124,6 @@ class HiltModules {
         return DownloadFinishUseCase(database = database, cachePath = cachePath)
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     @Provides
     @Singleton
     fun provideWalletService(
@@ -148,7 +143,6 @@ class HiltModules {
         )
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     @Provides
     @Singleton
     fun provideWalletManager(
@@ -179,7 +173,6 @@ class HiltModules {
 }
 
 class CachePath(val applicationContext: Context) {
-    @RequiresApi(Build.VERSION_CODES.O)
     fun getPath(): Path? {
         return Paths.get("${applicationContext.cacheDir}")
     }
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/MusicActivity.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/MusicActivity.kt
index 87bbe2ae5..32c8fe101 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/MusicActivity.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/MusicActivity.kt
@@ -5,12 +5,10 @@ import android.content.Context
 import android.content.Intent
 import android.content.ServiceConnection
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.os.IBinder
 import android.util.Log
 import androidx.activity.compose.setContent
-import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.animation.ExperimentalAnimationApi
 import androidx.compose.foundation.ExperimentalFoundationApi
@@ -73,7 +71,6 @@ class MusicActivity : AppCompatActivity() {
     @DelicateCoroutinesApi
     @ExperimentalAnimationApi
     @ExperimentalFoundationApi
-    @RequiresApi(Build.VERSION_CODES.O)
     @ExperimentalMaterialApi
     @ExperimentalComposeUiApi
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -233,7 +230,6 @@ class MusicActivity : AppCompatActivity() {
         return uriList
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     private fun iterativelyFetchReleases() {
         @Suppress("DEPRECATION")
         lifecycleScope.launchWhenStarted {
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/cache/entities/AlbumEntity.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/cache/entities/AlbumEntity.kt
index 88d8b7b0c..5a92b5f71 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/cache/entities/AlbumEntity.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/cache/entities/AlbumEntity.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.core.cache.entities
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.room.Entity
 import androidx.room.PrimaryKey
 import nl.tudelft.trustchain.musicdao.core.repositories.model.Album
@@ -23,7 +21,6 @@ data class AlbumEntity(
     val infoHash: String?,
     val torrentPath: String?
 ) {
-    @RequiresApi(Build.VERSION_CODES.O)
     fun toAlbum(): Album {
         return Album(
             id = id,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/dao/DaoCommunity.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/dao/DaoCommunity.kt
index c12d1aee3..90ecaad24 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/dao/DaoCommunity.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/dao/DaoCommunity.kt
@@ -2,9 +2,7 @@ package nl.tudelft.trustchain.musicdao.core.dao
 
 import android.app.Activity
 import android.content.Context
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import nl.tudelft.ipv8.Community
 import nl.tudelft.ipv8.android.IPv8Android
 import nl.tudelft.ipv8.attestation.trustchain.TrustChainBlock
@@ -48,7 +46,6 @@ class DaoCommunity constructor(serviceId: String = "02313685c1912a141279f8248fc8
          * @param entranceFee - Long, the entrance fee for joining the DAO.
          * @param threshold - Int, the percentage of members that need to vote before allowing someone in the DAO.
          */
-        @RequiresApi(Build.VERSION_CODES.O)
         fun createBitcoinGenesisWallet(
             entranceFee: Long,
             threshold: Int,
@@ -68,7 +65,6 @@ class DaoCommunity constructor(serviceId: String = "02313685c1912a141279f8248fc8
          * **NOTE** the latest walletBlockData should be given, otherwise the serialized transaction is invalid.
          * @param walletBlock - the latest (that you know of) shared wallet block.
          */
-        @RequiresApi(Build.VERSION_CODES.O)
         fun proposeJoinWallet(walletBlock: TrustChainBlock): SWSignatureAskTransactionData {
             return daoJoinHelper.proposeJoinWallet(myPeer, walletBlock)
         }
@@ -106,7 +102,6 @@ class DaoCommunity constructor(serviceId: String = "02313685c1912a141279f8248fc8
          * @param satoshiAmount - Long, the amount that needs to be transferred
          * @return the proposal block
          */
-        @RequiresApi(Build.VERSION_CODES.O)
         fun proposeTransferFunds(
             walletBlock: TrustChainBlock,
             receiverAddressSerialized: String,
@@ -129,7 +124,6 @@ class DaoCommunity constructor(serviceId: String = "02313685c1912a141279f8248fc8
          * @param receiverAddress - String, the address where the transfer needs to go
          * @param satoshiAmount - Long, the amount that needs to be transferred
          */
-        @RequiresApi(Build.VERSION_CODES.O)
         fun transferFunds(
             walletData: SWJoinBlockTD,
             walletBlockData: TrustChainTransaction,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/AlbumRepository.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/AlbumRepository.kt
index 4c5370fa6..5bb415225 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/AlbumRepository.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/AlbumRepository.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.core.repositories
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.map
 import kotlinx.coroutines.DelicateCoroutinesApi
@@ -17,7 +15,6 @@ import javax.inject.Inject
  * This class will be the class the application interacts with and will return
  * the data that the UI/CMD interface can work with.
  */
-@RequiresApi(Build.VERSION_CODES.O)
 class AlbumRepository
     @Inject
     constructor(
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/ArtistRepository.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/ArtistRepository.kt
index 893d7c512..ce2077300 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/ArtistRepository.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/ArtistRepository.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.core.repositories
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import nl.tudelft.trustchain.musicdao.core.ipv8.MusicCommunity
 import nl.tudelft.trustchain.musicdao.core.ipv8.blocks.artistAnnounce.ArtistAnnounceBlock
 import nl.tudelft.trustchain.musicdao.core.ipv8.blocks.artistAnnounce.ArtistAnnounceBlockRepository
@@ -12,7 +10,6 @@ import kotlinx.coroutines.flow.StateFlow
 import javax.inject.Inject
 import javax.inject.Singleton
 
-@RequiresApi(Build.VERSION_CODES.O)
 @Singleton
 class ArtistRepository
     @Inject
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/album/BatchPublisher.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/album/BatchPublisher.kt
index b567f973f..260a4a2a5 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/album/BatchPublisher.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/album/BatchPublisher.kt
@@ -1,8 +1,6 @@
 package nl.tudelft.trustchain.musicdao.core.repositories.album
 
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import kotlinx.coroutines.DelicateCoroutinesApi
 import nl.tudelft.trustchain.musicdao.CachePath
 import nl.tudelft.trustchain.musicdao.core.repositories.AlbumRepository
@@ -14,7 +12,6 @@ import java.time.Instant
 import java.util.*
 import javax.inject.Inject
 
-@RequiresApi(Build.VERSION_CODES.O)
 class BatchPublisher
     @Inject
     constructor(
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/album/CreateReleaseUseCase.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/album/CreateReleaseUseCase.kt
index e5dd70e84..834b79a4a 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/album/CreateReleaseUseCase.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/repositories/album/CreateReleaseUseCase.kt
@@ -2,9 +2,7 @@ package nl.tudelft.trustchain.musicdao.core.repositories.album
 
 import android.content.Context
 import android.net.Uri
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import kotlinx.coroutines.DelicateCoroutinesApi
 import nl.tudelft.trustchain.musicdao.CachePath
 import nl.tudelft.trustchain.musicdao.core.repositories.AlbumRepository
@@ -21,7 +19,6 @@ class CreateReleaseUseCase
         private val cachePath: CachePath
     ) {
         @OptIn(DelicateCoroutinesApi::class)
-        @RequiresApi(Build.VERSION_CODES.O)
         suspend operator fun invoke(
             artist: String,
             title: String,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/TorrentEngine.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/TorrentEngine.kt
index 7991bf71f..3ff3675f0 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/TorrentEngine.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/TorrentEngine.kt
@@ -3,10 +3,8 @@ package nl.tudelft.trustchain.musicdao.core.torrent
 import android.content.Context
 import android.content.res.Resources
 import android.net.Uri
-import android.os.Build
 import android.provider.MediaStore
 import android.util.Log
-import androidx.annotation.RequiresApi
 import nl.tudelft.trustchain.musicdao.CachePath
 import nl.tudelft.trustchain.musicdao.core.cache.CacheDatabase
 import nl.tudelft.trustchain.musicdao.core.torrent.fileProcessing.DownloadFinishUseCase
@@ -29,7 +27,6 @@ import kotlin.io.path.createDirectories
 
 @DelicateCoroutinesApi
 @Singleton
-@RequiresApi(Build.VERSION_CODES.O)
 class TorrentEngine
     @Inject
     constructor(
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/fileProcessing/DownloadFinishUseCase.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/fileProcessing/DownloadFinishUseCase.kt
index 31411039d..966ac2be1 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/fileProcessing/DownloadFinishUseCase.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/fileProcessing/DownloadFinishUseCase.kt
@@ -1,18 +1,15 @@
 package nl.tudelft.trustchain.musicdao.core.torrent.fileProcessing
 
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
-import nl.tudelft.trustchain.musicdao.CachePath
-import nl.tudelft.trustchain.musicdao.core.cache.CacheDatabase
-import nl.tudelft.trustchain.musicdao.core.cache.entities.SongEntity
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import nl.tudelft.trustchain.musicdao.CachePath
+import nl.tudelft.trustchain.musicdao.core.cache.CacheDatabase
+import nl.tudelft.trustchain.musicdao.core.cache.entities.SongEntity
 import java.nio.file.Paths
 
-@RequiresApi(Build.VERSION_CODES.O)
-class DownloadFinishUseCase constructor(
+class DownloadFinishUseCase(
     private val database: CacheDatabase,
     private val cachePath: CachePath
 ) {
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/fileProcessing/FileProcessor.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/fileProcessing/FileProcessor.kt
index c167582f5..2ac0ce720 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/fileProcessing/FileProcessor.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/torrent/fileProcessing/FileProcessor.kt
@@ -2,9 +2,7 @@ package nl.tudelft.trustchain.musicdao.core.torrent.fileProcessing
 
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import nl.tudelft.trustchain.musicdao.core.util.Util
 import com.mpatric.mp3agic.Mp3File
 import java.io.File
@@ -13,7 +11,6 @@ import java.lang.Exception
 import java.nio.file.Path
 import java.nio.file.Paths
 
-@RequiresApi(Build.VERSION_CODES.O)
 class FileProcessor {
     companion object {
         private fun getFiles(path: Path): List<File>? {
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOCreateHelper.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOCreateHelper.kt
index ed4fd70fb..14a1d9f94 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOCreateHelper.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOCreateHelper.kt
@@ -1,8 +1,6 @@
 package nl.tudelft.trustchain.musicdao.core.util
 
 import android.content.Context
-import android.os.Build
-import androidx.annotation.RequiresApi
 import nl.tudelft.ipv8.Peer
 import nl.tudelft.ipv8.android.IPv8Android
 import nl.tudelft.ipv8.attestation.trustchain.TrustChainCommunity
@@ -29,7 +27,6 @@ class DAOCreateHelper {
      * If the transaction is valid, the result is broadcasted on trust chain.
      * **Throws** exceptions if something goes wrong with creating or broadcasting bitcoin transaction.
      */
-    @RequiresApi(Build.VERSION_CODES.O)
     fun createBitcoinGenesisWallet(
         myPeer: Peer,
         entranceFee: Long,
@@ -56,7 +53,6 @@ class DAOCreateHelper {
      * 1.2 Finishes the last step of creating a genesis shared bitcoin wallet.
      * Posts a self-signed trust chain block containing the shared wallet data.
      */
-    @RequiresApi(Build.VERSION_CODES.O)
     private fun broadcastCreatedSharedWallet(
         myPeer: Peer,
         transactionSerialized: String,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOJoinHelper.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOJoinHelper.kt
index 075d40427..8fbf676ac 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOJoinHelper.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOJoinHelper.kt
@@ -1,9 +1,7 @@
 package nl.tudelft.trustchain.musicdao.core.util
 
 import android.content.Context
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import nl.tudelft.ipv8.Peer
 import nl.tudelft.ipv8.android.IPv8Android
 import nl.tudelft.ipv8.attestation.trustchain.TrustChainBlock
@@ -44,7 +42,6 @@ class DAOJoinHelper {
      * **NOTE** the latest walletBlockData should be given, otherwise the serialized transaction is invalid.
      * @param mostRecentWalletBlock - the latest (that you know of) shared wallet block.
      */
-    @RequiresApi(Build.VERSION_CODES.O)
     fun proposeJoinWallet(
         myPeer: Peer,
         mostRecentWalletBlock: TrustChainBlock
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOTransferFundsHelper.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOTransferFundsHelper.kt
index e18bc507c..33ad29075 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOTransferFundsHelper.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/DAOTransferFundsHelper.kt
@@ -2,10 +2,8 @@ package nl.tudelft.trustchain.musicdao.core.util
 
 import android.app.Activity
 import android.content.Context
-import android.os.Build
 import android.util.Log
 import android.widget.Toast
-import androidx.annotation.RequiresApi
 import nl.tudelft.ipv8.Peer
 import nl.tudelft.ipv8.android.IPv8Android
 import nl.tudelft.ipv8.attestation.trustchain.TrustChainBlock
@@ -48,7 +46,6 @@ class DAOTransferFundsHelper {
      * @param satoshiAmount - Long, the amount that needs to be transferred
      * @return the proposal block
      */
-    @RequiresApi(Build.VERSION_CODES.O)
     fun proposeTransferFunds(
         myPeer: Peer,
         mostRecentWalletBlock: TrustChainBlock,
@@ -107,7 +104,6 @@ class DAOTransferFundsHelper {
     /**
      * 3.2 Transfer funds from an existing shared wallet to a third-party. Broadcast bitcoin transaction.
      */
-    @RequiresApi(Build.VERSION_CODES.O)
     fun transferFunds(
         myPeer: Peer,
         walletData: SWJoinBlockTD,
@@ -168,7 +164,6 @@ class DAOTransferFundsHelper {
     /**
      * 3.3 Everything is done, publish the final serialized bitcoin transaction data on trustchain.
      */
-    @RequiresApi(Build.VERSION_CODES.O)
     private fun broadcastTransferFundSuccessful(
         myPeer: Peer,
         walletData: SWJoinBlockTD,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/sharedWallet/SWJoinBlockTransactionData.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/sharedWallet/SWJoinBlockTransactionData.kt
index 99aaded1c..58274aa20 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/sharedWallet/SWJoinBlockTransactionData.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/sharedWallet/SWJoinBlockTransactionData.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.core.util.sharedWallet
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import com.google.gson.Gson
 import com.google.gson.JsonObject
 import nl.tudelft.ipv8.attestation.trustchain.TrustChainTransaction
@@ -49,7 +47,6 @@ class SWJoinBlockTransactionData(data: JsonObject) : SWBlockTransactionData(
         jsonData = SWUtil.objectToJsonObject(data)
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     constructor(
         entranceFee: Long,
         transactionSerialized: String,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/sharedWallet/SWUtil.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/sharedWallet/SWUtil.kt
index b453fe258..8a82c18d5 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/sharedWallet/SWUtil.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/core/util/sharedWallet/SWUtil.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.core.util.sharedWallet
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import com.google.gson.Gson
 import com.google.gson.JsonObject
 import nl.tudelft.ipv8.attestation.trustchain.TrustChainTransaction
@@ -20,7 +18,6 @@ object SWUtil {
      * Generate a random 128 bit string
      * From: https://sakthipriyan.com/2017/04/02/creating-base64-uuid-in-java.html
      */
-    @RequiresApi(Build.VERSION_CODES.O)
     @JvmStatic
     fun randomUUID(): String {
         val uuid: UUID = UUID.randomUUID()
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/MusicDAOApp.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/MusicDAOApp.kt
index e6cfec7ce..1fdf1c2e5 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/MusicDAOApp.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/MusicDAOApp.kt
@@ -1,8 +1,6 @@
 package nl.tudelft.trustchain.musicdao.ui
 
 import MinimizedPlayer
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.animation.ExperimentalAnimationApi
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Column
@@ -30,7 +28,6 @@ import nl.tudelft.trustchain.musicdao.ui.navigation.BottomNavigationBar
 
 @ExperimentalAnimationApi
 @ExperimentalFoundationApi
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @OptIn(ExperimentalComposeUiApi::class)
 @Composable
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/components/releases/ReleaseList.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/components/releases/ReleaseList.kt
index 41a883a93..a6972c065 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/components/releases/ReleaseList.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/components/releases/ReleaseList.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.components.releases
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
@@ -21,7 +19,6 @@ import nl.tudelft.trustchain.musicdao.core.repositories.model.Album
 import nl.tudelft.trustchain.musicdao.ui.components.ReleaseCover
 import nl.tudelft.trustchain.musicdao.ui.navigation.Screen
 
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @ExperimentalFoundationApi
 @Composable
@@ -46,7 +43,6 @@ fun ReleaseList(
     }
 }
 
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @ExperimentalFoundationApi
 @Composable
@@ -62,7 +58,6 @@ fun NonLazyReleaseList(
     }
 }
 
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @ExperimentalFoundationApi
 @Composable
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/navigation/AppNavigation.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/navigation/AppNavigation.kt
index df98e4563..964678379 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/navigation/AppNavigation.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/navigation/AppNavigation.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.navigation
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.animation.AnimatedContentScope
 import androidx.compose.animation.EnterTransition
 import androidx.compose.animation.ExitTransition
@@ -44,7 +42,6 @@ import nl.tudelft.trustchain.musicdao.ui.screens.profileMenu.ProfileMenuScreen
 
 @ExperimentalAnimationApi
 @ExperimentalFoundationApi
-@RequiresApi(Build.VERSION_CODES.O)
 @OptIn(ExperimentalMaterialApi::class, ExperimentalComposeUiApi::class)
 @Composable
 fun AppNavigation(
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/navigation/Drawer.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/navigation/Drawer.kt
index bc70b8adb..9740d9dd0 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/navigation/Drawer.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/navigation/Drawer.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.navigation
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.shape.CircleShape
@@ -17,7 +15,6 @@ import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
 import nl.tudelft.trustchain.musicdao.ui.screens.profile.MyProfileScreenViewModel
 
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @Composable
 fun Drawer(
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/artists/DiscoverArtistsScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/artists/DiscoverArtistsScreen.kt
index 9378164b4..254fe9888 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/artists/DiscoverArtistsScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/artists/DiscoverArtistsScreen.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.artists
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxSize
@@ -26,7 +24,6 @@ import com.google.accompanist.swiperefresh.SwipeRefresh
 import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
 
 @ExperimentalMaterialApi
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun DiscoverArtistsScreen(navController: NavController) {
     val discoverArtistsViewModel: DiscoverArtistsViewModel = hiltViewModel()
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/artists/DiscoverArtistsViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/artists/DiscoverArtistsViewModel.kt
index cca48d89e..b65ef2ce9 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/artists/DiscoverArtistsViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/artists/DiscoverArtistsViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.artists
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
@@ -15,7 +13,6 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
-@RequiresApi(Build.VERSION_CODES.O)
 @HiltViewModel
 class DiscoverArtistsViewModel
     @Inject
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoCreateScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoCreateScreen.kt
index 95105ca88..053fdd0d0 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoCreateScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoCreateScreen.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.dao
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.Card
 import androidx.compose.material.OutlinedButton
@@ -18,7 +16,6 @@ import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
 import nl.tudelft.trustchain.musicdao.ui.SnackbarHandler
 
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun DaoCreateScreen(
     daoViewModel: DaoViewModel,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoDetail.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoDetail.kt
index 4fc94cf00..1706f3bbf 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoDetail.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoDetail.kt
@@ -1,8 +1,6 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.dao
 
 import android.annotation.SuppressLint
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
@@ -27,7 +25,6 @@ import nl.tudelft.trustchain.musicdao.ui.util.Chip
 import com.google.accompanist.swiperefresh.SwipeRefresh
 import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
 
-@RequiresApi(Build.VERSION_CODES.N)
 @Composable
 fun DaoDetailScreen(
     navController: NavController,
@@ -52,7 +49,6 @@ fun DaoDetailScreen(
 }
 
 @SuppressLint("UnrememberedMutableState")
-@RequiresApi(Build.VERSION_CODES.N)
 @Composable
 fun DaoDetailPure(
     daoInitial: DAO,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoListScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoListScreen.kt
index 646c8f3eb..cba0ebf4c 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoListScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoListScreen.kt
@@ -25,7 +25,6 @@ import nl.tudelft.trustchain.musicdao.ui.screens.profileMenu.CustomMenuItem
 import com.google.accompanist.swiperefresh.SwipeRefresh
 import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
 
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @Composable
 fun DaoListScreen(
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoViewModel.kt
index 3faab0b20..0d6e3b379 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/DaoViewModel.kt
@@ -3,9 +3,7 @@ package nl.tudelft.trustchain.musicdao.ui.screens.dao
 import android.annotation.SuppressLint
 import android.app.Activity
 import android.content.Context
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import nl.tudelft.trustchain.musicdao.core.repositories.ArtistRepository
@@ -55,7 +53,6 @@ class DaoViewModel
             refreshOneShot()
         }
 
-        @RequiresApi(Build.VERSION_CODES.O)
         fun createGenesisDAO(
             currentEntranceFee: Long,
             currentThreshold: Int,
@@ -284,7 +281,6 @@ class DaoViewModel
             }
         }
 
-        @RequiresApi(Build.VERSION_CODES.O)
         fun joinSharedWalletClicked(
             daoId: String,
             context: Context
@@ -642,7 +638,6 @@ class DaoViewModel
             return Coin.valueOf(previousTransaction.vout.filter { it.scriptPubKey.size == 35 }[0].nValue)
         }
 
-        @RequiresApi(Build.VERSION_CODES.O)
         fun getListsOfArtists(): List<Artist> {
             return artistRepository.getArtists()
         }
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/ProposalCreateScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/ProposalCreateScreen.kt
index 692ca4464..48e4ccfb2 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/ProposalCreateScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/dao/ProposalCreateScreen.kt
@@ -1,8 +1,6 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.dao
 
 import android.app.Activity
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.*
 import androidx.compose.material.icons.Icons
@@ -16,7 +14,6 @@ import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
 import nl.tudelft.trustchain.musicdao.ui.SnackbarHandler
 
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun ProposalCreateScreen(
     daoId: String,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/debug/DebugScreenViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/debug/DebugScreenViewModel.kt
index d302506ed..794ebfd7a 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/debug/DebugScreenViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/debug/DebugScreenViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.debug
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import nl.tudelft.trustchain.musicdao.core.torrent.TorrentEngine
@@ -16,7 +14,6 @@ import kotlinx.coroutines.launch
 import javax.inject.Inject
 
 @OptIn(DelicateCoroutinesApi::class)
-@RequiresApi(Build.VERSION_CODES.O)
 @HiltViewModel
 class DebugScreenViewModel
     @Inject
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/donate/DonateScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/donate/DonateScreen.kt
index 019df2ce0..b8603fa43 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/donate/DonateScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/donate/DonateScreen.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.donate
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
@@ -22,7 +20,6 @@ import nl.tudelft.trustchain.musicdao.ui.screens.profileMenu.CustomMenuItem
 import nl.tudelft.trustchain.musicdao.ui.screens.wallet.BitcoinWalletViewModel
 import kotlinx.coroutines.launch
 
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun DonateScreen(
     bitcoinWalletViewModel: BitcoinWalletViewModel,
@@ -40,7 +37,6 @@ fun DonateScreen(
         }
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     fun send() {
         // Check if enough balance available
         val confirmedBalance = bitcoinWalletViewModel.confirmedBalance.value
@@ -61,7 +57,10 @@ fun DonateScreen(
     }
 
     if (artist.value == null) {
-        EmptyState(firstLine = "404", secondLine = "This artist has not published a key you can donate to.")
+        EmptyState(
+            firstLine = "404",
+            secondLine = "This artist has not published a key you can donate to."
+        )
         return
     }
 
@@ -76,7 +75,11 @@ fun DonateScreen(
             fontWeight = FontWeight.SemiBold,
             modifier = Modifier.padding(bottom = 5.dp)
         )
-        OutlinedTextField(value = amount.value, onValueChange = { amount.value = it }, modifier = Modifier.padding(bottom = 10.dp))
+        OutlinedTextField(
+            value = amount.value,
+            onValueChange = { amount.value = it },
+            modifier = Modifier.padding(bottom = 10.dp)
+        )
         Row {
             Button(
                 onClick = {
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/donate/DonateScreenViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/donate/DonateScreenViewModel.kt
index 95f762d0e..006c63e71 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/donate/DonateScreenViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/donate/DonateScreenViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.donate
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.ViewModel
 import nl.tudelft.trustchain.musicdao.core.repositories.ArtistRepository
 import nl.tudelft.trustchain.musicdao.core.repositories.model.Artist
@@ -10,14 +8,12 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import javax.inject.Inject
 
-@RequiresApi(Build.VERSION_CODES.O)
 @HiltViewModel
 class DonateScreenViewModel
     @Inject
     constructor(val artistRepository: ArtistRepository) : ViewModel() {
         var artist: StateFlow<Artist?> = MutableStateFlow(null)
 
-        @RequiresApi(Build.VERSION_CODES.O)
         suspend fun setArtist(publicKey: String) {
             artist = artistRepository.getArtistStateFlow(publicKey)
         }
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/home/HomeScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/home/HomeScreen.kt
index a1ab001ce..68a2793d1 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/home/HomeScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/home/HomeScreen.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.home
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -22,7 +20,6 @@ import nl.tudelft.trustchain.musicdao.ui.screens.search.SearchScreenViewModel
 import com.google.accompanist.swiperefresh.SwipeRefresh
 import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
 
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/home/HomeScreenViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/home/HomeScreenViewModel.kt
index e57b21859..5e03199d2 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/home/HomeScreenViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/home/HomeScreenViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.home
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
@@ -13,7 +11,6 @@ import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
-@RequiresApi(Build.VERSION_CODES.O)
 @HiltViewModel
 class HomeScreenViewModel
     @Inject
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/EditProfileScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/EditProfileScreen.kt
index f1bf39616..b04d5c036 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/EditProfileScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/EditProfileScreen.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.profile
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
@@ -18,7 +16,6 @@ import androidx.navigation.NavController
 import nl.tudelft.trustchain.musicdao.ui.SnackbarHandler
 import kotlinx.coroutines.launch
 
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun EditProfileScreen(navController: NavController) {
     val ownProfileViewScreenModel: MyProfileScreenViewModel = hiltViewModel()
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/MyProfileScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/MyProfileScreen.kt
index 908824528..6635e90ff 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/MyProfileScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/MyProfileScreen.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.profile
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
@@ -13,7 +11,6 @@ import androidx.compose.ui.Modifier
 import androidx.navigation.NavController
 import nl.tudelft.trustchain.musicdao.ui.components.EmptyState
 
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/MyProfileScreenViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/MyProfileScreenViewModel.kt
index 4669924e4..f1d324e2d 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/MyProfileScreenViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/MyProfileScreenViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.profile
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import nl.tudelft.trustchain.musicdao.core.ipv8.MusicCommunity
@@ -13,7 +11,6 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
-@RequiresApi(Build.VERSION_CODES.O)
 @HiltViewModel
 class MyProfileScreenViewModel
     @Inject
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/Profile.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/Profile.kt
index 0fffb9e04..9188ff7f3 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/Profile.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/Profile.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.profile
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
@@ -26,7 +24,6 @@ import nl.tudelft.trustchain.musicdao.ui.navigation.Screen
 
 @ExperimentalFoundationApi
 @ExperimentalMaterialApi
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun Profile(
     artist: Artist,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/ProfileScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/ProfileScreen.kt
index 3ab841132..51fe10beb 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/ProfileScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/ProfileScreen.kt
@@ -1,8 +1,6 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.profile
 
 import android.app.Activity
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
@@ -20,7 +18,6 @@ import dagger.hilt.android.EntryPointAccessors
 
 @ExperimentalMaterialApi
 @ExperimentalFoundationApi
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun ProfileScreen(
     publicKey: String,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/ProfileScreenViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/ProfileScreenViewModel.kt
index 543a4f033..abc26367f 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/ProfileScreenViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profile/ProfileScreenViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.profile
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.viewModelScope
@@ -15,7 +13,6 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.launch
 
-@RequiresApi(Build.VERSION_CODES.O)
 class ProfileScreenViewModel
     @AssistedInject
     constructor(
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profileMenu/ProfileMenuScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profileMenu/ProfileMenuScreen.kt
index 2e87dd421..790f4faa2 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profileMenu/ProfileMenuScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/profileMenu/ProfileMenuScreen.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.profileMenu
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
@@ -22,7 +20,6 @@ import androidx.compose.ui.unit.sp
 import androidx.navigation.NavController
 import nl.tudelft.trustchain.musicdao.ui.navigation.Screen
 
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun ProfileMenuScreen(navController: NavController) {
     Column {
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/ReleaseScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/ReleaseScreen.kt
index ef89bd4f6..b79c93e2d 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/ReleaseScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/ReleaseScreen.kt
@@ -1,8 +1,6 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.release
 
 import android.app.Activity
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
@@ -43,7 +41,6 @@ import nl.tudelft.trustchain.musicdao.ui.screens.torrent.TorrentStatusScreen
 import dagger.hilt.android.EntryPointAccessors
 import java.io.File
 
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalMaterialApi
 @Composable
 fun ReleaseScreen(
@@ -224,7 +221,6 @@ fun ReleaseScreen(
     }
 }
 
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun Header(
     album: Album,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/ReleaseScreenViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/ReleaseScreenViewModel.kt
index 5d0350033..b502e9c40 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/ReleaseScreenViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/ReleaseScreenViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.release
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.*
 import nl.tudelft.trustchain.musicdao.core.cache.CacheDatabase
 import nl.tudelft.trustchain.musicdao.core.cache.entities.AlbumEntity
@@ -19,7 +17,6 @@ import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 
 @OptIn(DelicateCoroutinesApi::class)
-@RequiresApi(Build.VERSION_CODES.O)
 class ReleaseScreenViewModel
     @AssistedInject
     constructor(
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/create/CreateReleaseDialog.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/create/CreateReleaseDialog.kt
index 3815029da..de0dc7e22 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/create/CreateReleaseDialog.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/create/CreateReleaseDialog.kt
@@ -3,9 +3,7 @@ package nl.tudelft.trustchain.musicdao.ui.screens.release.create
 import android.annotation.SuppressLint
 import android.content.Intent
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
-import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.rememberScrollState
@@ -35,7 +33,6 @@ import kotlinx.coroutines.launch
 import java.time.Instant
 
 @SuppressLint("UnusedMaterialScaffoldPaddingParameter")
-@RequiresApi(Build.VERSION_CODES.O)
 @ExperimentalComposeUiApi
 @Composable
 fun CreateReleaseDialog(navController: NavController) {
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/create/CreateReleaseDialogViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/create/CreateReleaseDialogViewModel.kt
index fb7a989b1..5ea9e4cd4 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/create/CreateReleaseDialogViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/release/create/CreateReleaseDialogViewModel.kt
@@ -2,8 +2,6 @@ package nl.tudelft.trustchain.musicdao.ui.screens.release.create
 
 import android.content.Context
 import android.net.Uri
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.ViewModel
 import nl.tudelft.trustchain.musicdao.core.repositories.album.CreateReleaseUseCase
 import dagger.hilt.android.lifecycle.HiltViewModel
@@ -14,7 +12,6 @@ class CreateReleaseDialogViewModel
     @Inject
     constructor(private val createReleaseUseCase: CreateReleaseUseCase) :
     ViewModel() {
-        @RequiresApi(Build.VERSION_CODES.O)
         suspend fun createRelease(
             artist: String,
             title: String,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/search/SearchScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/search/SearchScreen.kt
index c2a95577b..d647d9ea5 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/search/SearchScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/search/SearchScreen.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.search
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -20,7 +18,6 @@ import nl.tudelft.trustchain.musicdao.ui.components.releases.ReleaseList
 
 @ExperimentalFoundationApi
 @OptIn(ExperimentalMaterialApi::class)
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun SearchScreen(
     navController: NavController,
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/search/SearchScreenViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/search/SearchScreenViewModel.kt
index 24f577e66..144f3cfb2 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/search/SearchScreenViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/search/SearchScreenViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.search
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
@@ -17,7 +15,6 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
-@RequiresApi(Build.VERSION_CODES.O)
 @HiltViewModel
 class SearchScreenViewModel
     @Inject
@@ -50,7 +47,6 @@ class SearchScreenViewModel
             }
         }
 
-        @RequiresApi(Build.VERSION_CODES.O)
         fun searchDebounced(searchText: String) {
             _searchQuery.value = searchText
 
@@ -71,7 +67,6 @@ class SearchScreenViewModel
             return downloadedAlbums
         }
 
-        @RequiresApi(Build.VERSION_CODES.O)
         private suspend fun search(searchText: String) {
             if (searchText.isEmpty()) {
                 _searchResult.value = downloadedFirstInListOfAlbums(albumRepository.getAlbums())
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/settings/SettingsScreen.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/settings/SettingsScreen.kt
index 890ddd01c..e33012653 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/settings/SettingsScreen.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/settings/SettingsScreen.kt
@@ -2,9 +2,7 @@ package nl.tudelft.trustchain.musicdao.ui.screens.settings
 
 import android.content.Intent
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
-import androidx.annotation.RequiresApi
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Column
 import androidx.compose.material.ExperimentalMaterialApi
@@ -20,7 +18,6 @@ import kotlinx.coroutines.launch
 
 @OptIn(ExperimentalMaterialApi::class)
 @Composable
-@RequiresApi(Build.VERSION_CODES.O)
 fun SettingsScreen(settingsScreenViewModel: SettingsScreenViewModel) {
     val coroutine = rememberCoroutineScope()
     val context = LocalContext.current
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/settings/SettingsScreenViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/settings/SettingsScreenViewModel.kt
index 1c883b87a..2802bf74d 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/settings/SettingsScreenViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/settings/SettingsScreenViewModel.kt
@@ -2,9 +2,7 @@ package nl.tudelft.trustchain.musicdao.ui.screens.settings
 
 import android.content.Context
 import android.net.Uri
-import android.os.Build
 import android.util.Log
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.ViewModel
 import nl.tudelft.trustchain.musicdao.CachePath
 import nl.tudelft.trustchain.musicdao.core.repositories.album.BatchPublisher
@@ -21,7 +19,6 @@ class SettingsScreenViewModel
         private val cachePath: CachePath,
         private val androidURIController: AndroidURIController
     ) : ViewModel() {
-        @RequiresApi(Build.VERSION_CODES.O)
         suspend fun publishBatch(
             uri: Uri,
             context: Context
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/wallet/BitcoinWalletViewModel.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/wallet/BitcoinWalletViewModel.kt
index 065efc243..1cd1cc8d6 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/wallet/BitcoinWalletViewModel.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/screens/wallet/BitcoinWalletViewModel.kt
@@ -1,7 +1,5 @@
 package nl.tudelft.trustchain.musicdao.ui.screens.wallet
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import nl.tudelft.trustchain.musicdao.core.repositories.ArtistRepository
@@ -68,7 +66,6 @@ class BitcoinWalletViewModel
             return walletService.wallet()
         }
 
-        @RequiresApi(Build.VERSION_CODES.O)
         suspend fun donate(
             publicKey: String,
             amount: String
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/util/AndroidURIController.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/util/AndroidURIController.kt
index c8c0d373e..203d4907c 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/util/AndroidURIController.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/util/AndroidURIController.kt
@@ -2,8 +2,6 @@ package nl.tudelft.trustchain.musicdao.ui.util
 
 import android.content.Context
 import android.net.Uri
-import android.os.Build
-import androidx.annotation.RequiresApi
 import nl.tudelft.trustchain.musicdao.CachePath
 import org.apache.commons.io.FileUtils
 import java.io.File
@@ -11,7 +9,6 @@ import java.io.InputStream
 import java.nio.file.Path
 import javax.inject.Inject
 
-@RequiresApi(Build.VERSION_CODES.O)
 class AndroidURIController
     @Inject
     constructor(cacheDir: CachePath) {
diff --git a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/util/Parsing.kt b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/util/Parsing.kt
index dbaac2a61..31ef88ec9 100644
--- a/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/util/Parsing.kt
+++ b/musicdao/src/main/java/nl/tudelft/trustchain/musicdao/ui/util/Parsing.kt
@@ -1,14 +1,11 @@
 package nl.tudelft.trustchain.musicdao.ui.util
 
-import android.os.Build
-import androidx.annotation.RequiresApi
 import java.time.Instant
 import java.time.ZoneId
 import java.time.format.DateTimeFormatter
 import java.time.format.FormatStyle
 import java.util.*
 
-@RequiresApi(Build.VERSION_CODES.O)
 fun dateToShortString(instant: String): String {
     return try {
         val time = Instant.parse(instant)
@@ -23,7 +20,6 @@ fun dateToShortString(instant: String): String {
     }
 }
 
-@RequiresApi(Build.VERSION_CODES.O)
 fun dateToLongString(instant: String): String {
     return try {
         val time = Instant.parse(instant)
diff --git a/peerai/build.gradle b/peerai/build.gradle
index 1f7271655..6adafce30 100644
--- a/peerai/build.gradle
+++ b/peerai/build.gradle
@@ -8,7 +8,7 @@ apply plugin: 'kotlinx-serialization'
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/valuetransfer/build.gradle b/valuetransfer/build.gradle
index 67e243474..b0734edf3 100644
--- a/valuetransfer/build.gradle
+++ b/valuetransfer/build.gradle
@@ -29,7 +29,7 @@ repositories {
 
 android {
     defaultConfig {
-        minSdkVersion 24
+        minSdkVersion 26
         compileSdk 34
         targetSdkVersion 34
 
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ChatMediaDialog.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ChatMediaDialog.kt
index f04a5e552..4b21cc223 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ChatMediaDialog.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ChatMediaDialog.kt
@@ -2,7 +2,6 @@ package nl.tudelft.trustchain.valuetransfer.dialogs
 
 import android.app.Dialog
 import android.content.Context
-import android.os.Build
 import android.os.Bundle
 import android.view.*
 import androidx.appcompat.widget.AppCompatTextView
@@ -20,7 +19,6 @@ import java.text.SimpleDateFormat
 import java.util.*
 import android.widget.LinearLayout
 import android.widget.TextView
-import androidx.annotation.RequiresApi
 import androidx.viewpager.widget.ViewPager
 import nl.tudelft.trustchain.valuetransfer.ui.contacts.ChatMediaDetailAdapter
 import nl.tudelft.trustchain.valuetransfer.ui.contacts.ChatMediaItem
@@ -224,7 +222,6 @@ class ChatMediaDialog(
         }
     }
 
-    @RequiresApi(Build.VERSION_CODES.Q)
     override fun onMenuItemClick(item: MenuItem?): Boolean {
         when (item?.itemId) {
             R.id.actionSaveFile -> {
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeGatewayDialog.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeGatewayDialog.kt
index 0fdf754c7..2d7304e95 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeGatewayDialog.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeGatewayDialog.kt
@@ -1,10 +1,8 @@
 package nl.tudelft.trustchain.valuetransfer.dialogs
 
-import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.widget.*
-import androidx.annotation.RequiresApi
 import androidx.core.view.isVisible
 import androidx.lifecycle.Observer
 import com.google.android.material.bottomsheet.BottomSheetBehavior
@@ -26,7 +24,6 @@ class ExchangeGatewayDialog(
     private val name: String,
     private val amount: Long?,
 ) : VTDialogFragment() {
-    @RequiresApi(Build.VERSION_CODES.O)
     override fun onCreateDialog(savedInstanceState: Bundle?): BottomSheetDialog {
         return activity?.let {
             val bottomSheetDialog =
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeTransactionDialog.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeTransactionDialog.kt
index 06c5e870a..b9c9986ae 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeTransactionDialog.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeTransactionDialog.kt
@@ -1,10 +1,8 @@
 package nl.tudelft.trustchain.valuetransfer.dialogs
 
-import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.widget.*
-import androidx.annotation.RequiresApi
 import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import com.google.android.material.bottomsheet.BottomSheetBehavior
@@ -30,7 +28,6 @@ class ExchangeTransactionDialog(
 ) : VTDialogFragment() {
     private val dateFormat = SimpleDateFormat("d MMMM yyyy, HH:mm", Locale.ENGLISH)
 
-    @RequiresApi(Build.VERSION_CODES.O)
     override fun onCreateDialog(savedInstanceState: Bundle?): BottomSheetDialog {
         return activity?.let {
             val bottomSheetDialog =
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeTransferMoneyLinkDialog.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeTransferMoneyLinkDialog.kt
index 5992b0696..bc1071db5 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeTransferMoneyLinkDialog.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/ExchangeTransferMoneyLinkDialog.kt
@@ -2,12 +2,10 @@ package nl.tudelft.trustchain.valuetransfer.dialogs
 
 import android.content.Intent
 import android.graphics.Color
-import android.os.Build
 import android.os.Bundle
 import android.util.Log
 import android.view.View
 import android.widget.*
-import androidx.annotation.RequiresApi
 import androidx.core.widget.doAfterTextChanged
 import androidx.lifecycle.Observer
 import com.android.volley.Request
@@ -47,7 +45,6 @@ class ExchangeTransferMoneyLinkDialog(
         TransactionRepository(IPv8Android.getInstance().getOverlay()!!, gatewayStoreLink)
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     override fun onCreateDialog(savedInstanceState: Bundle?): BottomSheetDialog {
         return activity?.let {
             val bottomSheetDialog =
@@ -174,7 +171,6 @@ class ExchangeTransferMoneyLinkDialog(
             ?: throw IllegalStateException(resources.getString(R.string.text_activity_not_null_requirement))
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     internal fun createPaymentId(
         amount: Int,
         iban: String? = null
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/IdentityOnboardingDialog.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/IdentityOnboardingDialog.kt
index e8eb8c438..75181ab55 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/IdentityOnboardingDialog.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/dialogs/IdentityOnboardingDialog.kt
@@ -4,7 +4,6 @@ import android.app.Activity
 import android.app.Dialog
 import android.content.Intent
 import android.nfc.NfcAdapter
-import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.provider.Settings
@@ -232,20 +231,9 @@ class IdentityOnboardingDialog : VTDialogFragment(), View.OnClickListener {
     private fun openNFCSettings() {
         val intent =
             Intent().apply {
-                when {
-                    Build.VERSION.SDK_INT >= Build.VERSION_CODES.O -> {
-                        action = Settings.ACTION_NFC_SETTINGS
-                        putExtra(Settings.EXTRA_APP_PACKAGE, parentActivity.packageName)
-                    }
-
-                    else -> {
-                        action = "android.settings.WIRELESS_SETTINGS"
-                        putExtra("app_package", parentActivity.packageName)
-                        putExtra("app_uid", parentActivity.applicationInfo.uid)
-                    }
-                }
+                action = Settings.ACTION_NFC_SETTINGS
+                putExtra(Settings.EXTRA_APP_PACKAGE, parentActivity.packageName)
             }
-
         startActivity(intent)
     }
 
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/contacts/ContactChatFragment.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/contacts/ContactChatFragment.kt
index fe70e442f..fb9ce7c50 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/contacts/ContactChatFragment.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/contacts/ContactChatFragment.kt
@@ -9,7 +9,6 @@ import android.content.pm.PackageManager
 import android.graphics.Color
 import android.location.Location
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.os.Handler
 import android.provider.MediaStore
@@ -1218,7 +1217,6 @@ class ContactChatFragment : VTFragment(R.layout.fragment_contacts_chat) {
         binding.clSearchFilter.isVisible = !hide
 
         val typedValue = TypedValue()
-
         parentActivity.theme.resolveAttribute(
             if (hide) R.attr.colorPrimary else R.attr.colorAccent,
             typedValue,
@@ -1226,18 +1224,7 @@ class ContactChatFragment : VTFragment(R.layout.fragment_contacts_chat) {
         )
 
         val color = ContextCompat.getColor(requireContext(), typedValue.resourceId)
-
-        parentActivity.window.statusBarColor =
-            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
-                val currentTheme = appPreferences.getCurrentTheme()
-                if (currentTheme == AppPreferences.APP_THEME_NIGHT) {
-                    color
-                } else {
-                    Color.BLACK
-                }
-            } else {
-                color
-            }
+        parentActivity.window.statusBarColor = color
 
         val actionBarTypedValue = TypedValue()
         parentActivity.theme.resolveAttribute(
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/identity/IdentityFragment.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/identity/IdentityFragment.kt
index b351bfb6b..e246a8d65 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/identity/IdentityFragment.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/identity/IdentityFragment.kt
@@ -523,6 +523,7 @@ class IdentityFragment : VTFragment(R.layout.fragment_identity) {
         }
     }
 
+    @Deprecated("Deprecated in Java")
     @Suppress("DEPRECATION")
     override fun onActivityResult(
         requestCode: Int,
@@ -534,7 +535,7 @@ class IdentityFragment : VTFragment(R.layout.fragment_identity) {
                 if (data != null) {
                     data.data?.let { uri ->
                         val bitmap =
-                            if (Build.VERSION.SDK_INT >= 29) {
+                            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                                 val source = ImageDecoder.createSource(parentActivity.contentResolver, uri)
                                 ImageDecoder.decodeBitmap(source)
                             } else {
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/settings/NotificationHandler.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/settings/NotificationHandler.kt
index 1e14e3714..b94cfa2f4 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/settings/NotificationHandler.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/settings/NotificationHandler.kt
@@ -41,43 +41,41 @@ class NotificationHandler(
     private val notificationManager by lazy {
         parentActivity.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
     }
-    private lateinit var messagesChannel: NotificationChannel
-    private lateinit var transactionsChannel: NotificationChannel
+    private var messagesChannel: NotificationChannel
+    private var transactionsChannel: NotificationChannel
     private var notificationCount = 0
 
     init {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            messagesChannel =
-                if (notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_MESSAGES_ID) == null) {
-                    NotificationChannel(
-                        NOTIFICATION_CHANNEL_MESSAGES_ID,
-                        NOTIFICATION_CHANNEL_MESSAGES_NAME,
-                        NotificationManager.IMPORTANCE_HIGH
-                    ).apply {
-                        description = NOTIFICATION_CHANNEL_MESSAGES_DESCRIPTION
-                        setShowBadge(true)
-                        notificationManager.createNotificationChannel(this)
-                    }
-                } else {
-                    notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_MESSAGES_ID)
+        messagesChannel =
+            if (notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_MESSAGES_ID) == null) {
+                NotificationChannel(
+                    NOTIFICATION_CHANNEL_MESSAGES_ID,
+                    NOTIFICATION_CHANNEL_MESSAGES_NAME,
+                    NotificationManager.IMPORTANCE_HIGH
+                ).apply {
+                    description = NOTIFICATION_CHANNEL_MESSAGES_DESCRIPTION
+                    setShowBadge(true)
+                    notificationManager.createNotificationChannel(this)
                 }
+            } else {
+                notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_MESSAGES_ID)
+            }
 
-            transactionsChannel =
-                if (notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_TRANSACTIONS_ID) == null) {
-                    NotificationChannel(
-                        NOTIFICATION_CHANNEL_TRANSACTIONS_ID,
-                        NOTIFICATION_CHANNEL_TRANSACTIONS_NAME,
-                        NotificationManager.IMPORTANCE_HIGH
-                    ).apply {
-                        description = NOTIFICATION_CHANNEL_TRANSACTIONS_DESCRIPTION
-                        notificationManager.createNotificationChannel(this)
-                    }
-                } else {
-                    notificationManager.getNotificationChannel(
-                        NOTIFICATION_CHANNEL_TRANSACTIONS_ID
-                    )
+        transactionsChannel =
+            if (notificationManager.getNotificationChannel(NOTIFICATION_CHANNEL_TRANSACTIONS_ID) == null) {
+                NotificationChannel(
+                    NOTIFICATION_CHANNEL_TRANSACTIONS_ID,
+                    NOTIFICATION_CHANNEL_TRANSACTIONS_NAME,
+                    NotificationManager.IMPORTANCE_HIGH
+                ).apply {
+                    description = NOTIFICATION_CHANNEL_TRANSACTIONS_DESCRIPTION
+                    notificationManager.createNotificationChannel(this)
                 }
-        }
+            } else {
+                notificationManager.getNotificationChannel(
+                    NOTIFICATION_CHANNEL_TRANSACTIONS_ID
+                )
+            }
     }
 
     fun cancelAll() {
@@ -109,6 +107,7 @@ class NotificationHandler(
                 chatMessage.attachment?.let { attachment ->
                     attachment(peer, attachment.type, chatMessage.message, isAppInForeground)
                 }
+
             TYPE_TRANSACTION ->
                 transaction(
                     peer,
@@ -154,14 +153,11 @@ class NotificationHandler(
     }
 
     fun getNotificationChannelStatus(channelID: String): String {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            return if (notificationManager.getNotificationChannel(channelID).importance != NotificationManager.IMPORTANCE_NONE) {
-                NOTIFICATION_STATUS_ENABLED
-            } else {
-                NOTIFICATION_STATUS_DISABLED
-            }
+        return if (notificationManager.getNotificationChannel(channelID).importance != NotificationManager.IMPORTANCE_NONE) {
+            NOTIFICATION_STATUS_ENABLED
+        } else {
+            NOTIFICATION_STATUS_DISABLED
         }
-        return NOTIFICATION_STATUS_UNKNOWN
     }
 
     fun typeOfMessage(chatMessage: ChatMessage): String {
@@ -174,6 +170,7 @@ class NotificationHandler(
             notificationsMessages && chatMessage.message.isNotBlank() &&
                 chatMessage.attachment == null &&
                 chatMessage.transactionHash == null -> TYPE_MESSAGE
+
             notificationsMessages && chatMessage.attachment != null -> TYPE_ATTACHMENT
             notificationsTransactions && chatMessage.transactionHash != null -> TYPE_TRANSACTION
             else -> ""
@@ -243,21 +240,25 @@ class NotificationHandler(
                     getEmojiByUnicode(EMOJI_CAMERA),
                     ATTACHMENT_TYPE_PHOTO
                 )
+
             MessageAttachment.TYPE_FILE ->
                 listOf(
                     getEmojiByUnicode(EMOJI_FILE),
                     ATTACHMENT_TYPE_FILE
                 )
+
             MessageAttachment.TYPE_CONTACT ->
                 listOf(
                     getEmojiByUnicode(EMOJI_CONTACT),
                     ATTACHMENT_TYPE_CONTACT
                 )
+
             MessageAttachment.TYPE_LOCATION ->
                 listOf(
                     getEmojiByUnicode(EMOJI_LOCATION),
                     ATTACHMENT_TYPE_LOCATION
                 )
+
             MessageAttachment.TYPE_IDENTITY_ATTRIBUTE ->
                 listOf(
                     getEmojiByUnicode(
@@ -265,6 +266,7 @@ class NotificationHandler(
                     ),
                     ATTACHMENT_TYPE_IDENTITY_ATTRIBUTE
                 )
+
             MessageAttachment.TYPE_TRANSFER_REQUEST -> {
                 when {
                     message != "" ->
@@ -272,6 +274,7 @@ class NotificationHandler(
                             R.string.text_contact_chat_incoming_transfer_request_with_message,
                             message
                         )
+
                     else -> ""
                 }.let { text ->
                     listOf(
@@ -281,6 +284,7 @@ class NotificationHandler(
                     )
                 }
             }
+
             else -> listOf()
         }.joinToString(" ").let { text ->
             if (isAppInForeground) {
@@ -419,7 +423,10 @@ class NotificationHandler(
 
         val args =
             Bundle().apply {
-                putString(ValueTransferMainActivity.ARG_PUBLIC_KEY, peer.publicKey.keyToBin().toHex())
+                putString(
+                    ValueTransferMainActivity.ARG_PUBLIC_KEY,
+                    peer.publicKey.keyToBin().toHex()
+                )
                 putString(
                     ValueTransferMainActivity.ARG_NAME,
                     contact?.name ?: (
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/settings/SettingsFragment.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/settings/SettingsFragment.kt
index f80e4beac..0364b76f8 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/settings/SettingsFragment.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/ui/settings/SettingsFragment.kt
@@ -2,11 +2,9 @@ package nl.tudelft.trustchain.valuetransfer.ui.settings
 
 import android.content.Intent
 import android.content.pm.PackageManager
-import android.os.Build
 import android.os.Bundle
 import android.provider.Settings
 import android.view.*
-import androidx.annotation.RequiresApi
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.view.isVisible
 import androidx.lifecycle.MutableLiveData
@@ -25,9 +23,12 @@ import nl.tudelft.trustchain.valuetransfer.dialogs.OptionsDialog
 class SettingsFragment : VTFragment(R.layout.fragment_settings) {
     private val binding by viewBinding(FragmentSettingsBinding::bind)
 
-    private val notificationsStatus = MutableLiveData(NotificationHandler.NOTIFICATION_STATUS_DISABLED)
-    private val notificationsMessageStatus = MutableLiveData(NotificationHandler.NOTIFICATION_STATUS_UNKNOWN)
-    private val notificationsTransactionStatus = MutableLiveData(NotificationHandler.NOTIFICATION_STATUS_UNKNOWN)
+    private val notificationsStatus =
+        MutableLiveData(NotificationHandler.NOTIFICATION_STATUS_DISABLED)
+    private val notificationsMessageStatus =
+        MutableLiveData(NotificationHandler.NOTIFICATION_STATUS_UNKNOWN)
+    private val notificationsTransactionStatus =
+        MutableLiveData(NotificationHandler.NOTIFICATION_STATUS_UNKNOWN)
 
     override fun onCreateView(
         inflater: LayoutInflater,
@@ -44,7 +45,6 @@ class SettingsFragment : VTFragment(R.layout.fragment_settings) {
         setHasOptionsMenu(true)
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     override fun onViewCreated(
         view: View,
         savedInstanceState: Bundle?
@@ -146,7 +146,8 @@ class SettingsFragment : VTFragment(R.layout.fragment_settings) {
                     } else {
                         ""
                     }
-                binding.llNotificationsSpecific.isVisible = it == NotificationHandler.NOTIFICATION_STATUS_ENABLED
+                binding.llNotificationsSpecific.isVisible =
+                    it == NotificationHandler.NOTIFICATION_STATUS_ENABLED
             }
         )
 
@@ -169,21 +170,11 @@ class SettingsFragment : VTFragment(R.layout.fragment_settings) {
         }
     }
 
-    @RequiresApi(Build.VERSION_CODES.O)
     fun openChannelSettings() {
         val intent =
             Intent().apply {
-                when {
-                    Build.VERSION.SDK_INT >= Build.VERSION_CODES.O -> {
-                        action = Settings.ACTION_APP_NOTIFICATION_SETTINGS
-                        putExtra(Settings.EXTRA_APP_PACKAGE, parentActivity.packageName)
-                    }
-                    else -> {
-                        action = "android.settings.APP_NOTIFICATION_SETTINGS"
-                        putExtra("app_package", parentActivity.packageName)
-                        putExtra("app_uid", parentActivity.applicationInfo.uid)
-                    }
-                }
+                action = Settings.ACTION_APP_NOTIFICATION_SETTINGS
+                putExtra(Settings.EXTRA_APP_PACKAGE, parentActivity.packageName)
             }
         startActivity(intent)
     }
diff --git a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/util/SecurityUtil.kt b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/util/SecurityUtil.kt
index 2b244807f..94ef528c1 100644
--- a/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/util/SecurityUtil.kt
+++ b/valuetransfer/src/main/java/nl/tudelft/trustchain/valuetransfer/util/SecurityUtil.kt
@@ -1,9 +1,7 @@
 package nl.tudelft.trustchain.valuetransfer.util
 
-import android.os.Build
 import android.security.keystore.KeyGenParameterSpec
 import android.security.keystore.KeyProperties
-import androidx.annotation.RequiresApi
 import java.lang.RuntimeException
 import java.math.BigInteger
 import java.net.URLDecoder
@@ -17,7 +15,6 @@ object SecurityUtil {
     private const val KEY_ALIAS = "nl.tudelft.trustchain.key"
     private const val ANDROID_KEYSTORE = "AndroidKeyStore"
 
-    @RequiresApi(Build.VERSION_CODES.M)
     fun generateKey(): KeyPair {
         // We are creating a RSA key pair
         val keyPairGenerator: KeyPairGenerator = KeyPairGenerator.getInstance(KeyProperties.KEY_ALGORITHM_RSA, ANDROID_KEYSTORE)