diff --git a/squeaknode/client/rpc_client.py b/squeaknode/client/rpc_client.py
index 1aaf7e46..3cbc7e43 100644
--- a/squeaknode/client/rpc_client.py
+++ b/squeaknode/client/rpc_client.py
@@ -4,6 +4,7 @@ import grpc
 
 from squeaknode.common.rpc import squeak_server_pb2
 from squeaknode.common.rpc import squeak_server_pb2_grpc
+from squeaknode.common.rpc.util import build_squeak_msg
 
 from squeak.core.signing import CSigningKey
 from squeak.core.signing import CSqueakAddress
@@ -43,5 +44,10 @@ class RPCClient(object):
         # channel = grpc.insecure_channel('sqkserver:50052')
         stub = squeak_server_pb2_grpc.SqueakServerStub(channel)
         response = stub.SayHello(squeak_server_pb2.HelloRequest(name='rpc_client'))
-        print("Greeter client received: " + response.message)
         logger.info("Greeter client received: " + response.message)
+
+        logger.info("Building squeak msg with squeak: " + str(squeak))
+        squeak_msg = build_squeak_msg(squeak)
+        logger.info("Building squeak msg with squeak_msg: " + str(squeak_msg))
+        response2 = stub.PostSqueak(squeak_server_pb2.PostSqueakRequest(squeak=squeak_msg))
+        logger.info("Post squeak client received: " + str(response2.hash))
diff --git a/squeaknode/common/rpc/squeak_server.proto b/squeaknode/common/rpc/squeak_server.proto
index bd159984..41a7a080 100644
--- a/squeaknode/common/rpc/squeak_server.proto
+++ b/squeaknode/common/rpc/squeak_server.proto
@@ -27,9 +27,9 @@ service SqueakServer {
   // Sends a greeting
   rpc SayHello (HelloRequest) returns (HelloReply) {}
 
-  // /** sqk: `postsqueak`
-  // */
-  // rpc Postsqueak (PostsqueakRequest) returns (PostsqueakResponse) {}
+  /** sqk: `postsqueak`
+  */
+  rpc PostSqueak (PostSqueakRequest) returns (PostSqueakReply) {}
 
   // /** sqk: `getsqueak`
   // */
@@ -47,9 +47,9 @@ message HelloReply {
   string message = 1;
 }
 
-message PostsqueakRequest {
+message PostSqueakRequest {
     /// Content of the squeak to be made.
-    string content = 1;
+    Squeak squeak = 1;
 }
 
 message GetSqueakRequest {
@@ -57,9 +57,9 @@ message GetSqueakRequest {
     bytes hash = 1;
 }
 
-message PostsqueakResponse {
+message PostSqueakReply {
     /// The squeak.
-    Squeak squeak = 1;
+    bytes hash = 1;
 }
 
 message GetSqueakResponse {
@@ -67,55 +67,10 @@ message GetSqueakResponse {
     Squeak squeak = 1;
 }
 
-message Addr {
-  string host = 1;
-
-  uint64 port = 2;
-}
-
 message Squeak {
     /// Hash of the squeak.
     bytes hash = 1;
 
-    /// Protocol version
-    uint64 n_version = 2;
-
-    /// Hash of the squeak to which it replies.
-    bytes hash_reply_squeak = 3;
-
-    /// Hash of the bitcoin block.
-    bytes hash_block = 4;
-
-    /// Block height of the squeak.
-    uint64 block_height = 5;
-
-    /// Public key script
-    bytes script_pub_key = 6;
-
-    /// Hash of the data key
-    bytes hash_data_key = 7;
-
-    /// Initialization vector
-    bytes iv = 8;
-
-    /// Timestamp of the squeak.
-    uint64 n_time = 9;
-
-    /// Nonce
-    uint64 nonce = 10;
-
-    /// Encrypted content
-    bytes enc_content = 11;
-
-    /// Signatute script
-    bytes script_sig = 12;
-
-    /// Data key
-    bytes data_key = 13;
-
-    /// Address of the creator.
-    string address = 14;
-
-    /// Decrypted content of the squeak.
-    string content = 15;
+    /// Serialized squeak.
+    bytes serialized_squeak = 2;
 }
diff --git a/squeaknode/common/rpc/util.py b/squeaknode/common/rpc/util.py
new file mode 100644
index 00000000..3244d3ea
--- /dev/null
+++ b/squeaknode/common/rpc/util.py
@@ -0,0 +1,16 @@
+
+from squeak.core import CSqueak
+
+from squeaknode.common.rpc import squeak_server_pb2
+from squeaknode.common.rpc import squeak_server_pb2_grpc
+
+
+def build_squeak_msg(squeak):
+    return squeak_server_pb2.Squeak(
+        hash=squeak.GetHash(),
+        serialized_squeak=squeak.serialize(),
+    )
+
+
+def squeak_from_msg(squeak_msg):
+    return CSqueak.deserialize(squeak_msg.serialized_squeak)
diff --git a/squeaknode/server/squeak_server_handler.py b/squeaknode/server/squeak_server_handler.py
index 0266bb93..f743649b 100644
--- a/squeaknode/server/squeak_server_handler.py
+++ b/squeaknode/server/squeak_server_handler.py
@@ -29,6 +29,10 @@ class SqueakServerHandler(object):
     def say_hello(self):
         return 'hello from the handler'
 
+    def handle_posted_squeak(self, squeak):
+        logger.info("Handler got posted squeak: " + str(squeak))
+        return squeak.GetHash()
+
 
 # class ClientNodeError(Exception):
 #     pass
diff --git a/squeaknode/server/squeak_server_servicer.py b/squeaknode/server/squeak_server_servicer.py
index 616f0ea5..ce3d64eb 100644
--- a/squeaknode/server/squeak_server_servicer.py
+++ b/squeaknode/server/squeak_server_servicer.py
@@ -20,6 +20,7 @@ import grpc
 
 from squeaknode.common.rpc import squeak_server_pb2
 from squeaknode.common.rpc import squeak_server_pb2_grpc
+from squeaknode.common.rpc.util import squeak_from_msg
 
 
 class SqueakServerServicer(squeak_server_pb2_grpc.SqueakServerServicer):
@@ -41,6 +42,14 @@ class SqueakServerServicer(squeak_server_pb2_grpc.SqueakServerServicer):
     #         unconfirmed_balance=response.unconfirmed_balance,
     #     )
 
+    def PostSqueak(self, request, context):
+        squeak_msg = request.squeak
+        squeak = squeak_from_msg(squeak_msg)
+        squeak_hash = self.handler.handle_posted_squeak(squeak)
+        return squeak_server_pb2.PostSqueakReply(
+            hash=squeak_hash,
+        )
+
     def serve(self):
         print('Calling serve...', flush=True)
         server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))