diff --git a/docker-compose.yml b/docker-compose.yml
index 9bcb1185..d0921175 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -47,8 +47,8 @@ services:
     #   - redis
     #   - identity
     environment:
-      ISSUERS_BANK_DID: did:iota:snd:0x1d78531b739a3aef0e90523213f28e869423a6d6253ea0fcbd7db2714e9606bf
-      ISSUERS_BANK_FRAGMENT: xwhWgiK3plOzbQESCONMneeFx4ps24rzbtC1jXEb42o
+      ISSUERS_BANK_DID: did:iota:snd:0x2cfb60f00089a91a96fa8fcee5e2bda15f51b0b062762ad9ca846bba536f8818
+      ISSUERS_BANK_FRAGMENT: S3zEW4inNy8FYZEMVTEthdzqqSBq1WglM2k75xKHzy0
     labels:
       - "traefik.enable=true"
       - "traefik.http.routers.backend.rule=Host(`backend.localhost`)"
@@ -60,6 +60,8 @@ services:
     build:
       context: ./
       dockerfile: ./oid4vc/TangleLabs/Dockerfile
+    environment:
+      SIGNER_KEYID: pK0JAYw5RFFKqorBn0x4w98zl2UBfRys
     expose:
       - '50051'
     volumes:
@@ -120,7 +122,7 @@ services:
     image: iotaledger/identity-grpc:alpha
     environment:
       - API_ENDPOINT=http://host.docker.internal
-      - STRONGHOLD_PWD=nEyWjBDO3sQSDnXuwij3KIJREHnWhtIu
+      - STRONGHOLD_PWD=nhNc9yAjbCuh6YQxKlceLAUrWCwAYLvu
       - SNAPSHOT_PATH=/stronghold.hodl
     volumes:
       - "./data/stronghold.hodl:/stronghold.hodl"
diff --git a/oid4vc/TangleLabs/package.json b/oid4vc/TangleLabs/package.json
index 8bf7ee07..b03d8742 100644
--- a/oid4vc/TangleLabs/package.json
+++ b/oid4vc/TangleLabs/package.json
@@ -4,7 +4,7 @@
   "description": "",
   "type": "module",
   "scripts": {
-    "start": "tsc --noEmit && node --loader ts-node/esm index.ts",
+    "start": "tsc --noEmit && node --loader ts-node/esm --experimental-specifier-resolution=node src/index.ts",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "author": "",
diff --git a/oid4vc/TangleLabs/index.ts b/oid4vc/TangleLabs/src/grpcService.ts
similarity index 52%
rename from oid4vc/TangleLabs/index.ts
rename to oid4vc/TangleLabs/src/grpcService.ts
index 57ce96e1..6b44aab9 100644
--- a/oid4vc/TangleLabs/index.ts
+++ b/oid4vc/TangleLabs/src/grpcService.ts
@@ -4,78 +4,27 @@ import { loadSync } from "@grpc/proto-loader";
 import {
   AuthResponse,
   RelyingParty,
-  SigningAlgs,
   SiopRequestResult,
-  bytesToString,
 } from "@tanglelabs/oid4vc";
-import * as KeyDIDResolver from "key-did-resolver";
-import { Resolver } from "did-resolver";
 import { PresentationDefinitionV2 } from "@sphereon/pex-models";
 
 import { fileURLToPath } from 'url';
 import { dirname } from 'path';
 
-import express from "express";
-import asyncHandler from "express-async-handler";
-
-//@ts-ignore
-import { driver } from "@digitalbazaar/did-method-key";
-//@ts-ignore
-import { Ed25519VerificationKey2020 } from "@digitalbazaar/ed25519-verification-key-2020";
-
-
-import { Signer } from 'did-jwt';
-
-const remoteSigner: Signer = async (data) => {
-    console.log(data);
-    return "test";
-};
-
-(async () => {
-
-    const __filename = fileURLToPath(import.meta.url);
+const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
 
-  const protoPath = path.join(
-    __dirname,
-    "..",
-    "..",
-    "proto/oid4vc/siopv2.proto"
-  );
-  const packageDefinition = loadSync(protoPath);
-  const protoPackage = grpc.loadPackageDefinition(packageDefinition);
-
-  const didKeyDriver = driver();
+const protoPath = path.join(
+  __dirname,
+  "..",
+  "..",
+  "..",
+  "proto/oid4vc/siopv2.proto"
+);
+const packageDefinition = loadSync(protoPath);
+const protoPackage = grpc.loadPackageDefinition(packageDefinition);
 
-  didKeyDriver.use({
-    multibaseMultikeyHeader: "z6Mk",
-    fromMultibase: Ed25519VerificationKey2020.from,
-  });
-
-  const verificationKeyPair = await Ed25519VerificationKey2020.generate();
-
-  console.log(bytesToString(verificationKeyPair._publicKeyBuffer));
-  console.log(bytesToString(verificationKeyPair._privateKeyBuffer));
-
-  const keyDidResolver = KeyDIDResolver.getResolver();
-  let resolver = new Resolver(keyDidResolver);
-
-  const rp = new RelyingParty({
-    clientId: "did:iota:0x",
-    clientMetadata: {
-      subjectSyntaxTypesSupported: [
-        "did:iota"
-      ],
-      idTokenSigningAlgValuesSupported: [
-        SigningAlgs.EdDSA
-      ],
-    },
-    did: "did:iota:0x",
-    kid: "did:iota:0x#my_key",
-    signer: remoteSigner,
-    redirectUri: "http://192.168.0.234:8080/api/auth",
-    resolver: resolver,
-  });
+export const createService = async (rp: RelyingParty) => {
 
   async function createRequest(
     call: grpc.ServerUnaryCall<
@@ -151,26 +100,13 @@ const __dirname = dirname(__filename);
   gRPCServer.bindAsync(
     "0.0.0.0:50051",
     grpc.ServerCredentials.createInsecure(),
-    () => {
-      gRPCServer.start();
+    (err, port) => {
+      if(err){
+        throw err;
+      }
+      console.log(`gRPC server listening on port ${port}`);
     }
   );
 
-  
-  const app = express();
-  app.use(express.json());
-  app.route("/api/health").get(
-    asyncHandler(async (req, res) => {
-        res.status(200).send();
-    })
-  );
-  app.route("/api/auth").post(
-    asyncHandler(async (req, res) => {
-        console.log(req);
-        await rp.verifyAuthResponse(req.body);
-        res.status(204).send();
-    })
-  );
-  const server = app.listen(3333, "0.0.0.0");
 
-})();
+};
diff --git a/oid4vc/TangleLabs/src/httpServer.ts b/oid4vc/TangleLabs/src/httpServer.ts
new file mode 100644
index 00000000..7d7c4ae0
--- /dev/null
+++ b/oid4vc/TangleLabs/src/httpServer.ts
@@ -0,0 +1,26 @@
+import express from "express";
+import asyncHandler from "express-async-handler";
+
+export const createServer = (rp) => {
+  
+  const app = express();
+  app.use(express.json());
+  app.route("/api/health").get(
+    asyncHandler(async (req, res) => {
+        res.status(200).send();
+    })
+  );
+  app.route("/api/auth").post(
+    asyncHandler(async (req, res) => {
+        console.log(req);
+        await rp.verifyAuthResponse(req.body);
+        res.status(204).send();
+    })
+  );
+
+  const port = 3333;
+  const server = app.listen(port, "0.0.0.0", () => {
+    console.log(`HTTP server listening on port ${port}`);
+  });
+  
+};
diff --git a/oid4vc/TangleLabs/src/index.ts b/oid4vc/TangleLabs/src/index.ts
new file mode 100644
index 00000000..228f905b
--- /dev/null
+++ b/oid4vc/TangleLabs/src/index.ts
@@ -0,0 +1,56 @@
+import {
+  RelyingParty,
+  SigningAlgs,
+  bytesToString,
+} from "@tanglelabs/oid4vc";
+import * as KeyDIDResolver from "key-did-resolver";
+import { Resolver } from "did-resolver";
+
+//@ts-ignore
+import { driver } from "@digitalbazaar/did-method-key";
+//@ts-ignore
+import { Ed25519VerificationKey2020 } from "@digitalbazaar/ed25519-verification-key-2020";
+
+
+import { remoteSigner } from "./remoteSigner";
+import { createService } from "./grpcService";
+import { createServer } from "./httpServer";
+
+(async () => {
+
+  const didKeyDriver = driver();
+
+  didKeyDriver.use({
+    multibaseMultikeyHeader: "z6Mk",
+    fromMultibase: Ed25519VerificationKey2020.from,
+  });
+
+  const verificationKeyPair = await Ed25519VerificationKey2020.generate();
+
+  console.log(bytesToString(verificationKeyPair._publicKeyBuffer));
+  console.log(bytesToString(verificationKeyPair._privateKeyBuffer));
+
+  const keyDidResolver = KeyDIDResolver.getResolver();
+  let resolver = new Resolver(keyDidResolver);
+
+  const rp = new RelyingParty({
+    clientId: "did:iota:0x",
+    clientMetadata: {
+      subjectSyntaxTypesSupported: [
+        "did:iota"
+      ],
+      idTokenSigningAlgValuesSupported: [
+        SigningAlgs.EdDSA
+      ],
+    },
+    did: "did:iota:0x",
+    kid: "did:iota:0x#my_key",
+    signer: remoteSigner(process.env.SIGNER_KEYID),
+    redirectUri: "http://192.168.0.234:8080/api/auth",
+    resolver: resolver,
+  });
+
+  createService(rp);
+  createServer(rp);
+
+})();
diff --git a/oid4vc/TangleLabs/src/remoteSigner.ts b/oid4vc/TangleLabs/src/remoteSigner.ts
new file mode 100644
index 00000000..8b3a7a02
--- /dev/null
+++ b/oid4vc/TangleLabs/src/remoteSigner.ts
@@ -0,0 +1,43 @@
+import path from "path";
+import { fileURLToPath } from 'url';
+import { dirname } from 'path';
+import * as grpc from "@grpc/grpc-js";
+import { loadSync } from "@grpc/proto-loader";
+import { Signer } from 'did-jwt';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const identityProtoPath = path.join(
+  __dirname,
+  "..",
+  "..",
+  "..",
+  "proto/identity/utils.proto"
+);
+
+const identityPackageDefinition = loadSync(identityProtoPath);
+const identityPackage = grpc.loadPackageDefinition(identityPackageDefinition).utils;
+
+export const remoteSigner: (keyId: string) => Signer = (keyId) => async (data) => {
+
+    //@ts-ignore
+    const identityClient = new identityPackage.Signing(
+      'identity:50051', grpc.credentials.createInsecure()
+    );
+
+    console.debug(data);
+  
+    const response = await new Promise((resolve, reject) => identityClient.sign({
+      keyId,
+      data: Array.from(Buffer.from(data)),
+    }, (err, response) => {
+      if (err) {
+        console.error(err);
+      }
+      resolve(response);
+    }));
+    console.log(response)
+    return response as string;
+    
+};
\ No newline at end of file
diff --git a/proto/identity/utils.proto b/proto/identity/utils.proto
new file mode 100644
index 00000000..e28ccf35
--- /dev/null
+++ b/proto/identity/utils.proto
@@ -0,0 +1,22 @@
+// Copyright 2020-2024 IOTA Stiftung
+// SPDX-License-Identifier: Apache-2.0
+
+syntax = "proto3";
+package utils;
+
+message DataSigningRequest {
+    // Raw data that will be signed.
+    bytes data = 1;
+    // Signing key's ID.
+    string key_id = 2;
+}
+
+message DataSigningResponse {
+    // Raw data signature.
+    bytes signature = 1;
+}
+
+// Service that handles signing operations on raw data.
+service Signing {
+    rpc sign(DataSigningRequest) returns (DataSigningResponse);
+}
\ No newline at end of file
diff --git a/tooling/src/main.rs b/tooling/src/main.rs
index 74daa9e2..bf9eff35 100644
--- a/tooling/src/main.rs
+++ b/tooling/src/main.rs
@@ -7,6 +7,8 @@ use identity_iota::iota::IotaIdentityClientExt;
 use identity_iota::iota::NetworkName;
 use identity_iota::resolver::Resolver;
 use identity_iota::storage::JwkDocumentExt;
+use identity_iota::storage::KeyId;
+use identity_iota::storage::MethodDigest;
 use identity_stronghold::ED25519_KEY_TYPE;
 
 use rand::distributions::{Alphanumeric, DistString};
@@ -23,6 +25,8 @@ use iota_sdk::client::Client;
 use iota_sdk::client::Password;
 use iota_sdk::types::block::address::Address;
 use iota_sdk::types::block::output::AliasOutput;
+use identity_iota::storage::KeyIdStorage;
+
 
 // The API endpoint of an IOTA node, e.g. Hornet.
 const API_ENDPOINT: &str = "http://localhost";
@@ -68,7 +72,7 @@ async fn main() -> anyhow::Result<()> {
     Ok(())
 }
 
-async fn create_issuer(stronghold_storage: &StrongholdStorage, client: &Client) -> anyhow::Result<(String, String, Address)> {
+async fn create_issuer(stronghold_storage: &StrongholdStorage, client: &Client) -> anyhow::Result<(String, KeyId, String, Address)> {
     // Create a DID document.
     let address: Address = get_address_with_funds(
         &client,
@@ -97,6 +101,9 @@ async fn create_issuer(stronghold_storage: &StrongholdStorage, client: &Client)
         )
         .await?;
 
+    let method = document.resolve_method(&fragment, Some(MethodScope::VerificationMethod)).ok_or(anyhow::anyhow!("no go"))?;
+    let key_id = storage.key_id_storage().get_key_id(&MethodDigest::new(method)?).await?;
+
     // Construct an Alias Output containing the DID document, with the wallet address
     // set as both the state controller and governor.
     let alias_output: AliasOutput = client.new_did_output(address, document, None).await?;
@@ -129,5 +136,5 @@ async fn create_issuer(stronghold_storage: &StrongholdStorage, client: &Client)
         String::from_utf8_lossy(decoded_jws.claims.as_ref()),
         "test_data"
     );
-    Ok((document.id().to_string(), fragment, address))
+    Ok((document.id().to_string(), key_id, fragment, address))
 }