diff --git a/src/network.rs b/src/network.rs
index a141d15..0e888ce 100644
--- a/src/network.rs
+++ b/src/network.rs
@@ -1,20 +1,17 @@
 use std::collections::HashMap;
 
-use aes_gcm::aead::{Aead, Payload};
-use aes_gcm::{Aes256Gcm, KeyInit};
-use anyhow::{Error, Result};
-use js_sys::Date;
+use anyhow::Result;
 use rand::{thread_rng, RngCore};
 use serde::{Deserialize, Serialize};
-use serde_json::{Map, Value};
+use serde_json::Value;
 use sp_client::bitcoin::consensus::serialize;
-use sp_client::bitcoin::hex::{DisplayHex, FromHex};
+use sp_client::bitcoin::hex::DisplayHex;
 use sp_client::bitcoin::{OutPoint, Transaction};
 use tsify::Tsify;
 
-use crate::crypto::AAD;
 use crate::error::AnkError;
 use crate::pcd::{Member, RoleDefinition};
+use crate::process::Process;
 use crate::signature::Proof;
 
 #[derive(Debug, Serialize, Deserialize, Tsify)]
@@ -24,7 +21,7 @@ pub enum AnkFlag {
     Faucet,
     Cipher,
     Commit,
-    Init,
+    Handshake,
     Unknown,
 }
 
@@ -35,7 +32,7 @@ impl From<&str> for AnkFlag {
             "Faucet" => Self::Faucet,
             "Cipher" => Self::Cipher,
             "Commit" => Self::Commit,
-            "Init" => Self::Init,
+            "Handshake" => Self::Handshake,
             _ => Self::Unknown,
         }
     }
@@ -54,7 +51,7 @@ impl AnkFlag {
             1 => Self::Faucet,
             2 => Self::Cipher,
             3 => Self::Commit,
-            4 => Self::Init,
+            4 => Self::Handshake,
             _ => Self::Unknown,
         }
     }
@@ -65,7 +62,7 @@ impl AnkFlag {
             Self::Faucet => "Faucet",
             Self::Cipher => "Cipher",
             Self::Commit => "Commit",
-            Self::Init => "Init",
+            Self::Handshake => "Handshake",
             Self::Unknown => "Unknown",
         }
     }
@@ -171,6 +168,28 @@ impl NewTxMessage {
     }
 }
 
+#[derive(Debug, PartialEq, Serialize, Deserialize, Tsify)]
+#[tsify(into_wasm_abi, from_wasm_abi)]
+pub struct HandshakeMessage {
+    pub sp_address: String,
+    pub peers_list: HashMap<Member, OutPoint>,
+    pub processes_list: HashMap<OutPoint, Process>,
+}
+
+impl HandshakeMessage {
+    pub fn new(sp_address: String, peers_list: HashMap<Member, OutPoint>, processes_list: HashMap<OutPoint, Process>) -> Self {
+        Self {
+            sp_address,
+            peers_list,
+            processes_list,
+        }
+    }
+
+    pub fn to_string(&self) -> String {
+        serde_json::to_string(self).unwrap()
+    }
+}
+
 #[derive(Debug, Serialize, Deserialize)]
 pub struct Envelope {
     pub flag: AnkFlag,
diff --git a/src/pcd.rs b/src/pcd.rs
index b6cbef0..80067ab 100644
--- a/src/pcd.rs
+++ b/src/pcd.rs
@@ -1,6 +1,7 @@
 use anyhow::{Error, Result};
 use rs_merkle::{algorithms::Sha256, MerkleTree};
 use std::collections::{HashMap, HashSet};
+use std::hash::{Hash as StdHash, Hasher};
 
 use aes_gcm::{
     aead::{Aead, Payload},
@@ -22,12 +23,34 @@ use crate::{
     signature::{AnkHash, AnkValidationNoHash, AnkValidationYesHash, Proof},
 };
 
-#[derive(Debug, Default, Clone, PartialEq, Eq, Hash, Serialize, Deserialize, Tsify)]
+#[derive(Debug, Default, Clone, Serialize, Deserialize, Tsify)]
 #[tsify(into_wasm_abi, from_wasm_abi)]
 pub struct Member {
     sp_addresses: Vec<String>,
 }
 
+impl PartialEq for Member {
+    fn eq(&self, other: &Self) -> bool {
+        let self_set: HashSet<_> = self.sp_addresses.iter().collect();
+        let other_set: HashSet<_> = other.sp_addresses.iter().collect();
+        self_set == other_set
+    }
+}
+
+impl Eq for Member {}
+
+impl StdHash for Member {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        // Convert to a set to ensure order independence
+        let set: HashSet<_> = self.sp_addresses.iter().collect();
+        let mut unique_items: Vec<_> = set.into_iter().collect();
+        unique_items.sort_unstable(); // Sort to ensure consistent hashing
+        for item in unique_items {
+            item.hash(state);
+        }
+    }
+}
+
 impl Member {
     pub fn new(sp_addresses: Vec<SilentPaymentAddress>) -> Result<Self> {
         if sp_addresses.is_empty() {
diff --git a/src/prd.rs b/src/prd.rs
index 52e80d8..18cedb0 100644
--- a/src/prd.rs
+++ b/src/prd.rs
@@ -27,6 +27,7 @@ pub enum PrdType {
     Response, // Validate (or disagree) with a prd update
     Confirm, // Confirm we received an update
     TxProposal, // Send a psbt asking for recipient signature
+    Request // asks for the prd update for some state,
 }
 
 sha256t_hash_newtype! {
@@ -51,7 +52,7 @@ impl AnkPrdHash {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Tsify)]
+#[derive(Debug, Default, Clone, PartialEq, Serialize, Deserialize, Tsify)]
 #[tsify(into_wasm_abi, from_wasm_abi)]
 #[allow(non_camel_case_types)]
 pub struct Prd {
@@ -86,7 +87,7 @@ impl Prd {
 
     pub fn new_update(
         root_commitment: OutPoint,
-        sender: String, // Should take Member as argument
+        sender: Member,
         roles: HashMap<String, RoleDefinition>,
         keys: Map<String, Value>,
         pcd_commitments: Value,
@@ -94,7 +95,7 @@ impl Prd {
         Self {
             prd_type: PrdType::Update,
             root_commitment: root_commitment.to_string(),
-            sender,
+            sender: serde_json::to_string(&sender).unwrap(),
             validation_tokens: vec![],
             keys,
             pcd_commitments,
@@ -105,14 +106,14 @@ impl Prd {
 
     pub fn new_response(
         root_commitment: OutPoint,
-        sender: String,
+        sender: Member,
         validation_tokens: Vec<Proof>,
         pcd_commitments: Value,
     ) -> Self {
         Self {
             prd_type: PrdType::Response,
             root_commitment: root_commitment.to_string(),
-            sender,
+            sender: serde_json::to_string(&sender).unwrap(),
             validation_tokens: validation_tokens,
             keys: Map::new(),
             pcd_commitments,
@@ -138,6 +139,16 @@ impl Prd {
         }
     }
 
+    pub fn new_request(root_commitment: OutPoint, sender: Member, state_ids: Vec<[u8; 32]>) -> Self {
+        Self {
+            prd_type: PrdType::Request,
+            root_commitment: root_commitment.to_string(),
+            sender: serde_json::to_string(&sender).unwrap(),
+            payload: serde_json::to_string(&state_ids).unwrap(),
+            ..Default::default()
+        }
+    }
+
     pub fn extract_from_message(plain: &[u8], local_address: SilentPaymentAddress) -> Result<Self> {
         let prd: Prd = serde_json::from_slice(plain)?;