diff --git a/lerna.json b/lerna.json
index 9b1db0a2..a7e0b4ff 100644
--- a/lerna.json
+++ b/lerna.json
@@ -7,5 +7,5 @@
   "publishConfig": {
     "directory": "build"
   },
-  "version": "0.12.0-alpha.6"
+  "version": "0.12.0-alpha.7"
 }
diff --git a/packages/node-api/package.json b/packages/node-api/package.json
index ffc07131..e0f8e3f5 100644
--- a/packages/node-api/package.json
+++ b/packages/node-api/package.json
@@ -18,10 +18,10 @@
   },
   "sideEffects": false,
   "type": "module",
-  "version": "0.12.0-alpha.6",
+  "version": "0.12.0-alpha.7",
   "main": "index.js",
   "dependencies": {
-    "@encointer/types": "^0.12.0-alpha.6",
+    "@encointer/types": "^0.12.0-alpha.7",
     "@polkadot/api": "^10.9.1",
     "tslib": "^2.5.3"
   },
diff --git a/packages/types/package.json b/packages/types/package.json
index 31ba0d72..00668475 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -18,7 +18,7 @@
   },
   "sideEffects": false,
   "type": "module",
-  "version": "0.12.0-alpha.6",
+  "version": "0.12.0-alpha.7",
   "main": "index.js",
   "scripts": {
     "generate:defs": "node --experimental-specifier-resolution=node --loader ts-node/esm  ../../node_modules/.bin/polkadot-types-from-defs --package @encointer/types/interfaces  --input ./src/interfaces",
diff --git a/packages/util/package.json b/packages/util/package.json
index fba87d52..baf855b7 100644
--- a/packages/util/package.json
+++ b/packages/util/package.json
@@ -20,7 +20,7 @@
   "sideEffects": false,
   "type": "module",
   "types": "./index.d.ts",
-  "version": "0.12.0-alpha.6",
+  "version": "0.12.0-alpha.7",
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.18.9",
diff --git a/packages/worker-api/package.json b/packages/worker-api/package.json
index 874a1dd6..fef5bc50 100644
--- a/packages/worker-api/package.json
+++ b/packages/worker-api/package.json
@@ -19,12 +19,12 @@
   "sideEffects": false,
   "type": "module",
   "types": "./index.d.ts",
-  "version": "0.12.0-alpha.6",
+  "version": "0.12.0-alpha.7",
   "main": "index.js",
   "dependencies": {
-    "@encointer/node-api": "^0.12.0-alpha.6",
-    "@encointer/types": "^0.12.0-alpha.6",
-    "@encointer/util": "^0.12.0-alpha.6",
+    "@encointer/node-api": "^0.12.0-alpha.7",
+    "@encointer/types": "^0.12.0-alpha.7",
+    "@encointer/util": "^0.12.0-alpha.7",
     "@polkadot/api": "^10.9.1",
     "@polkadot/keyring": "^12.3.2",
     "@polkadot/types": "^10.9.1",
diff --git a/packages/worker-api/src/parsers.ts b/packages/worker-api/src/parsers.ts
index b6b90ca5..3cd6a72c 100644
--- a/packages/worker-api/src/parsers.ts
+++ b/packages/worker-api/src/parsers.ts
@@ -6,6 +6,7 @@ import NodeRSA from 'node-rsa';
 
 import type { IWorker } from './interface.js';
 import type { BalanceEntry } from "@encointer/types";
+import BN from "bn.js";
 
 export function parseBalance(self: IWorker, data: any): BalanceEntry {
   const balanceEntry = self.createType('BalanceEntry<BlockNumber>', data);
@@ -25,12 +26,12 @@ export function parseBalanceType(data: any): number {
 export function parseNodeRSA(data: any): NodeRSA {
   const keyJson = JSON.parse(data);
   keyJson.n = u8aToBuffer(keyJson.n).reverse();
-  keyJson.e = u8aToBuffer(keyJson.e).reverse();
+  keyJson.e = new BN(keyJson.e);
   const key = new NodeRSA();
   setKeyOpts(key);
   key.importKey({
     n: keyJson.n,
-    e: keyJson.e
+    e: keyJson.e.toNumber()
   }, 'components-public');
   return key;
 }
diff --git a/packages/worker-api/src/requests.ts b/packages/worker-api/src/requests.ts
index 38c5efa6..d452ea4f 100644
--- a/packages/worker-api/src/requests.ts
+++ b/packages/worker-api/src/requests.ts
@@ -80,7 +80,7 @@ export const createTrustedCall = (
 
     const payload = Uint8Array.from([...call.toU8a(), ...nonce.toU8a(), ...hash.toU8a(), ...shard.toU8a()]);
 
-    return self.createType('IntegriteeIntegriteeTrustedCallSigned', {
+    return self.createType('IntegriteeTrustedCallSigned', {
         call: call,
         nonce: nonce,
         signature: { Sr25519: toAccount(accountOrPubKey, self.keyring()).sign(payload) },
diff --git a/yarn.lock b/yarn.lock
index 97e9b946..72df5e2a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -755,18 +755,18 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@encointer/node-api@^0.12.0-alpha.6, @encointer/node-api@workspace:packages/node-api":
+"@encointer/node-api@^0.12.0-alpha.7, @encointer/node-api@workspace:packages/node-api":
   version: 0.0.0-use.local
   resolution: "@encointer/node-api@workspace:packages/node-api"
   dependencies:
-    "@encointer/types": ^0.12.0-alpha.6
+    "@encointer/types": ^0.12.0-alpha.7
     "@polkadot/api": ^10.9.1
     "@polkadot/util-crypto": ^12.3.2
     tslib: ^2.5.3
   languageName: unknown
   linkType: soft
 
-"@encointer/types@^0.12.0-alpha.6, @encointer/types@workspace:packages/types":
+"@encointer/types@^0.12.0-alpha.7, @encointer/types@workspace:packages/types":
   version: 0.0.0-use.local
   resolution: "@encointer/types@workspace:packages/types"
   dependencies:
@@ -781,7 +781,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@encointer/util@^0.12.0-alpha.6, @encointer/util@workspace:packages/util":
+"@encointer/util@^0.12.0-alpha.7, @encointer/util@workspace:packages/util":
   version: 0.0.0-use.local
   resolution: "@encointer/util@workspace:packages/util"
   dependencies:
@@ -798,9 +798,9 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@encointer/worker-api@workspace:packages/worker-api"
   dependencies:
-    "@encointer/node-api": ^0.12.0-alpha.6
-    "@encointer/types": ^0.12.0-alpha.6
-    "@encointer/util": ^0.12.0-alpha.6
+    "@encointer/node-api": ^0.12.0-alpha.7
+    "@encointer/types": ^0.12.0-alpha.7
+    "@encointer/util": ^0.12.0-alpha.7
     "@polkadot/api": ^10.9.1
     "@polkadot/keyring": ^12.3.2
     "@polkadot/types": ^10.9.1