diff --git a/src/api.rs b/src/api.rs
index 3eb0ae6..082d45f 100644
--- a/src/api.rs
+++ b/src/api.rs
@@ -23,7 +23,7 @@ use sdk_common::crypto::{
     decrypt_with_key, encrypt_with_key, generate_key, AeadCore, Aes256Gcm, AnkSharedSecretHash, KeyInit, AAD
 };
 use sdk_common::process::{check_tx_for_process_updates, lock_processes, Process, ProcessState};
-use sdk_common::serialization::OutPointMemberMap;
+use sdk_common::serialization::{OutPointMemberMap, OutPointProcessMap};
 use sdk_common::signature::{AnkHash, AnkMessageHash, AnkValidationNoHash, AnkValidationYesHash, Proof};
 use sdk_common::sp_client::bitcoin::blockdata::fee_rate;
 use sdk_common::sp_client::bitcoin::consensus::{deserialize, serialize};
@@ -47,7 +47,7 @@ use sdk_common::sp_client::constants::{
 };
 use sdk_common::sp_client::silentpayments::utils as sp_utils;
 use sdk_common::sp_client::silentpayments::{
-    utils::{Network as SpNetwork, SilentPaymentAddress},
+    SilentPaymentAddress,
     Error as SpError,
 };
 use sdk_common::{signature, MutexExt, MAX_PRD_PAYLOAD_SIZE};
@@ -67,11 +67,8 @@ use sdk_common::pcd::{
     AnkPcdHash, AnkPcdTag, Member, Pcd, PcdCommitments, RoleDefinition, Roles, ValidationRule
 };
 use sdk_common::prd::{AnkPrdHash, Prd, PrdType};
-use sdk_common::silentpayments::{create_transaction, map_outputs_to_sp_address};
-use sdk_common::sp_client::spclient::{
-    derive_keys_from_seed, OutputList, OutputSpendStatus, OwnedOutput, Recipient, SpClient,
-};
-use sdk_common::sp_client::spclient::{SpWallet, SpendKey};
+use sdk_common::silentpayments::{create_transaction as internal_create_transaction, sign_transaction as internal_sign_tx, TsUnsignedTransaction};
+use sdk_common::sp_client::{OutputSpendStatus, OwnedOutput, Recipient, RecipientAddress, SilentPaymentUnsignedTransaction, SpClient, SpendKey};
 use sdk_common::secrets::SecretsStore;
 
 use crate::user::{lock_local_device, set_new_device, LOCAL_DEVICE};
@@ -125,6 +122,7 @@ pub struct ApiReturn {
     pub ciphers_to_send: Vec<String>,
     pub commit_to_send: Option<CommitMessage>,
     pub push_to_storage: Vec<String>, // hash of the requested data, must be in db
+    pub partial_tx: Option<TsUnsignedTransaction>,
 }
 
 pub type ApiResult<T: FromWasmAbi> = Result<T, ApiError>;
@@ -250,10 +248,12 @@ pub fn setup() {
 pub fn get_address() -> ApiResult<String> {
     let local_device = lock_local_device()?;
 
-    Ok(local_device
-        .get_wallet()
-        .get_client()
-        .get_receiving_address())
+    let address = local_device
+        .get_sp_client()
+        .get_receiving_address()
+        .to_string();
+    debug!("{}", address);
+    Ok(address)
 }
 
 #[wasm_bindgen]
@@ -277,7 +277,7 @@ pub fn restore_device(device_str: String) -> ApiResult<()> {
 
 #[wasm_bindgen]
 pub fn create_device_from_sp_wallet(sp_wallet: String) -> ApiResult<String> {
-    let sp_wallet: SpWallet = serde_json::from_str(&sp_wallet)?;
+    let sp_wallet: SpClient = serde_json::from_str(&sp_wallet)?;
 
     let our_address = set_new_device(sp_wallet)?;
 
@@ -286,7 +286,7 @@ pub fn create_device_from_sp_wallet(sp_wallet: String) -> ApiResult<String> {
 
 #[wasm_bindgen]
 pub fn create_new_device(birthday: u32, network_str: String) -> ApiResult<String> {
-    let sp_wallet = generate_sp_wallet(None, Network::from_core_arg(&network_str)?)?;
+    let sp_wallet = generate_sp_wallet(Network::from_core_arg(&network_str)?)?;
 
     let our_address = set_new_device(sp_wallet)?;
 
@@ -309,9 +309,9 @@ pub fn pair_device(process_id: String, mut sp_addresses: Vec<String>) -> ApiResu
     }
 
     let local_address = local_device
-        .get_wallet()
-        .get_client()
-        .get_receiving_address();
+        .get_sp_client()
+        .get_receiving_address()
+        .to_string();
 
     if !sp_addresses.iter().any(|a| *a == local_address) {
         sp_addresses.push(local_address);
@@ -343,7 +343,7 @@ pub fn unpair_device() -> ApiResult<()> {
 pub fn dump_wallet() -> ApiResult<String> {
     let device = lock_local_device()?;
 
-    Ok(serde_json::to_string(device.get_wallet()).unwrap())
+    Ok(serde_json::to_string(device.get_sp_client()).unwrap())
 }
 
 #[wasm_bindgen]
@@ -453,14 +453,13 @@ pub fn dump_neutered_device() -> ApiResult<Device> {
         return Err(ApiError::new("Device must be paired".to_owned()));
     }
 
-    let client = local_device.get_wallet().get_client();
+    let client = local_device.get_sp_client();
     let scan_key = client.get_scan_key();
     let spend_pubkey: PublicKey = client.get_spend_key().into();
 
-    let neutered_client = SpClient::new("default".to_owned(), scan_key, SpendKey::Public(spend_pubkey), None, Network::Signet)?;
+    let neutered_client = SpClient::new(scan_key, SpendKey::Public(spend_pubkey), Network::Signet)?;
 
-    let new_wallet = SpWallet::new(neutered_client, None, vec![])?;
-    let mut neutered_device = Device::new(new_wallet);
+    let mut neutered_device = Device::new(neutered_client);
 
     neutered_device.pair(local_device.get_pairing_commitment().unwrap(), local_device.to_member());
 
@@ -493,11 +492,11 @@ fn handle_transaction(
 ) -> AnyhowResult<ApiReturn> {
     let b_scan: SecretKey;
     let local_member: Member;
-    let sp_wallet: SpWallet;
+    let sp_wallet: SpClient;
     {
         let local_device = lock_local_device()?;
-        sp_wallet = local_device.get_wallet().clone();
-        b_scan = local_device.get_wallet().get_client().get_scan_key();
+        sp_wallet = local_device.get_sp_client().clone();
+        b_scan = local_device.get_sp_client().get_scan_key();
         local_member = local_device.to_member();
     }
 
@@ -577,7 +576,7 @@ fn process_transaction(
             let processes = lock_processes()?;
             let process = processes.get(&outpoint).unwrap();
             let new_state = process.get_latest_commited_state().unwrap();
-            let diffs = if let Ok(diffs) = create_diffs(process, new_state, members_list) { diffs } else { vec![] };
+            let diffs = if let Ok(diffs) = create_diffs(&lock_local_device()?, process, new_state, members_list) { diffs } else { vec![] };
             let updated_process = UpdatedProcess {
                 process_id: outpoint,
                 current_process: process.clone(),
@@ -599,8 +598,7 @@ fn process_transaction(
     let updated: HashMap<OutPoint, OwnedOutput>;
     {
         let mut device = lock_local_device()?;
-        let wallet = device.get_mut_wallet();
-        updated = wallet.update_wallet_with_transaction(&tx, blockheight, tweak_data)?;
+        updated = device.update_outputs_with_transaction(&tx, blockheight, tweak_data)?;
     }
 
     if updated.len() > 0 {
@@ -648,15 +646,14 @@ fn confirm_prd(prd: &Prd, shared_secret: &AnkSharedSecretHash) -> AnyhowResult<S
 
     let prd_confirm = Prd::new_confirm(outpoint, sender, prd.pcd_commitments.clone());
 
-    let prd_msg = prd_confirm.to_network_msg(local_device.get_wallet())?;
+    let prd_msg = prd_confirm.to_network_msg(local_device.get_sp_client())?;
 
     Ok(encrypt_with_key(shared_secret.as_byte_array(), prd_msg.as_bytes())?.to_lower_hex_string())
 }
 
-fn create_diffs(process: &Process, new_state: &ProcessState, members_list: &OutPointMemberMap) -> AnyhowResult<Vec<UserDiff>> {
+fn create_diffs(device: &MutexGuard<Device>, process: &Process, new_state: &ProcessState, members_list: &OutPointMemberMap) -> AnyhowResult<Vec<UserDiff>> {
     let new_state_commitments = &new_state.pcd_commitment;
 
-    let device = lock_local_device()?;
     let our_id = device.get_pairing_commitment();
 
     let fields_to_validate = if let Some(our_id) = our_id {
@@ -700,14 +697,14 @@ fn create_diffs(process: &Process, new_state: &ProcessState, members_list: &OutP
 fn handle_prd_connect(prd: Prd, secret: AnkSharedSecretHash) -> AnyhowResult<ApiReturn> {
     let local_device = lock_local_device()?;
     let local_member = local_device.to_member();
-    let sp_wallet = local_device.get_wallet();
+    let sp_wallet = local_device.get_sp_client();
     let secret_hash = AnkMessageHash::from_message(secret.as_byte_array());
     let mut shared_secrets = lock_shared_secrets()?;
     if let Some(prev_proof) = prd.validation_tokens.get(0) {
         // check that the proof is valid 
         prev_proof.verify()?;
         // Check it's signed with our key
-        let local_address = SilentPaymentAddress::try_from(sp_wallet.get_client().get_receiving_address())?;
+        let local_address = SilentPaymentAddress::try_from(sp_wallet.get_receiving_address())?;
         if prev_proof.get_key() != local_address.get_spend_key() {
             return Err(anyhow::Error::msg("Previous proof of a prd connect isn't signed by us"));
         }
@@ -795,7 +792,7 @@ fn handle_prd(
             };
 
             // Compute the diffs
-            let diffs = create_diffs(&relevant_process, &new_state, members_list)?;
+            let diffs = create_diffs(&lock_local_device()?, &relevant_process, &new_state, members_list)?;
 
             relevant_process.insert_concurrent_state(new_state)?;
 
@@ -897,8 +894,8 @@ fn handle_prd(
                 };
                 let local_device = lock_local_device()?;
 
-                let sp_wallet = local_device.get_wallet();
-                let local_address = sp_wallet.get_client().get_receiving_address();
+                let sp_wallet = local_device.get_sp_client();
+                let local_address = sp_wallet.get_receiving_address().to_string();
 
                 let mut relevant_fields: HashSet<String> = HashSet::new();
                 let shared_secrets = lock_shared_secrets()?;
@@ -986,7 +983,7 @@ fn handle_decrypted_message(
     plain: Vec<u8>,
     members_list: &OutPointMemberMap
 ) -> anyhow::Result<ApiReturn> {
-    let local_address: SilentPaymentAddress = lock_local_device()?.get_wallet().get_client().get_receiving_address().try_into()?;
+    let local_address: SilentPaymentAddress = lock_local_device()?.get_address();
     if let Ok(prd) = Prd::extract_from_message(&plain, local_address) {
         handle_prd(prd, secret, members_list)
     } else {
@@ -1017,98 +1014,90 @@ pub fn parse_cipher(cipher_msg: String, members_list: OutPointMemberMap) -> ApiR
 #[wasm_bindgen]
 pub fn get_outputs() -> ApiResult<JsValue> {
     let device = lock_local_device()?;
-    let outputs = device.get_wallet().get_outputs().clone();
-    Ok(JsValue::from_serde(&outputs.to_outpoints_list())?)
+    Ok(JsValue::from_serde(device.get_outputs())?)
 }
 
 #[wasm_bindgen]
 pub fn get_available_amount() -> ApiResult<u64> {
     let device = lock_local_device()?;
 
-    Ok(device.get_wallet().get_outputs().get_balance().to_sat())
+    Ok(device.get_balance().to_sat())
 }
 
 fn get_shared_secrets_in_transaction(
-    psbt: &Psbt, 
-    addresses: Vec<String>
+    unsigned_transaction: &SilentPaymentUnsignedTransaction, 
+    sp_addresses: &[SilentPaymentAddress]
 ) -> anyhow::Result<HashMap<SilentPaymentAddress, AnkSharedSecretHash>> {
-    let local_device = lock_local_device()?;
-
-    let sp_wallet = local_device.get_wallet();
-
-    let partial_secret = sp_wallet
-        .get_client()
-        .get_partial_secret_from_psbt(&psbt)?;
-
     let mut new_secrets = HashMap::new();
-    for address in addresses {
-        let sp_address = SilentPaymentAddress::try_from(address.as_str())?;
+    for sp_address in sp_addresses {
         let shared_point = sp_utils::sending::calculate_ecdh_shared_secret(
             &sp_address.get_scan_key(),
-            &partial_secret,
+            &unsigned_transaction.partial_secret,
         );
 
         let shared_secret = AnkSharedSecretHash::from_shared_point(shared_point);
 
-        new_secrets.insert(sp_address, shared_secret);
+        new_secrets.insert(*sp_address, shared_secret);
     }
 
     Ok(new_secrets)
 }
 
-fn create_transaction_for_addresses(addresses: Vec<String>, fee_rate: u32) -> anyhow::Result<Psbt> {
-    let mut sp_addresses: Vec<SilentPaymentAddress> = Vec::with_capacity(addresses.len());
-    for address in &addresses {
-        let sp_address = SilentPaymentAddress::try_from(address.as_str())?;
-        sp_addresses.push(sp_address);
-    }
-
-    let local_device = lock_local_device()?;
-
-    let sp_wallet = local_device.get_wallet();
-    let mut freezed_utxos = lock_freezed_utxos()?;
-
-    let mut recipients = Vec::with_capacity(addresses.len());
-    for address in addresses {
+fn create_transaction_for_addresses(
+    device: &Device,
+    freezed_utxos: &HashSet<OutPoint>, 
+    sp_addresses: &[SilentPaymentAddress], 
+    fee_rate: u32
+) -> anyhow::Result<SilentPaymentUnsignedTransaction> {
+    let mut recipients = Vec::with_capacity(sp_addresses.len());
+    for sp_address in sp_addresses {
         let recipient = Recipient {
-            address,
+            address: RecipientAddress::SpAddress(*sp_address),
             amount: DEFAULT_AMOUNT,
-            nb_outputs: 1,
         };
         recipients.push(recipient);
     }
 
-    let signed_psbt = create_transaction(
+    let mut tx = internal_create_transaction(
         vec![],
-        &freezed_utxos,
-        sp_wallet,
+        device.get_outputs().clone(),
+        freezed_utxos,
+        device.get_sp_client(),
         recipients,
         None,
         Amount::from_sat(fee_rate.into()),
-        None,
     )?;
 
-    // We add the used inputs in freezed utxos to prevent accidental double spends
-    for input in &signed_psbt.unsigned_tx.input {
-        freezed_utxos.insert(input.previous_output);
-    }
+    let unsigned_transaction = SpClient::finalize_transaction(tx)?;
 
-    Ok(signed_psbt)
+    Ok(unsigned_transaction)
 }
 
 #[wasm_bindgen]
 /// We send a transaction that pays at least one output to each address
-/// The goal is to establish a shared_secret to be used as an encryption key for further communication
-pub fn create_connect_transaction(addresses: Vec<String>, fee_rate: u32) -> ApiResult<ApiReturn> { 
+/// The goal can be to establish a shared_secret to be used as an encryption key for further communication
+/// or if the recipient is a relay it can be the init transaction for a new process
+pub fn create_transaction(addresses: Vec<String>, fee_rate: u32) -> ApiResult<ApiReturn> { 
     if addresses.is_empty() {
         return Err(ApiError::new("No addresses to connect to".to_owned()));
     }
 
-    let psbt = create_transaction_for_addresses(addresses.clone(), fee_rate)?;
+    let sp_addresses: anyhow::Result<Vec<SilentPaymentAddress>> = addresses.into_iter()
+        .map(|a| {
+            <SilentPaymentAddress>::try_from(a).map_err(|e| anyhow::Error::new(e))
+        })
+        .collect();
 
-    let new_secrets = get_shared_secrets_in_transaction(&psbt, addresses)?;
+    let sp_addresses = sp_addresses?;
 
-    let transaction = psbt.extract_tx()?;
+    let mut local_device = lock_local_device()?;
+
+    let mut freezed_utxos = lock_freezed_utxos()?;
+
+    let partial_tx = create_transaction_for_addresses(&local_device, &freezed_utxos, &sp_addresses, fee_rate)?;
+    let new_secrets = get_shared_secrets_in_transaction(&partial_tx, &sp_addresses)?;
+
+    let unsigned_tx = SpClient::finalize_transaction(partial_tx)?;
 
     let mut shared_secrets = lock_shared_secrets()?;
     let mut secrets_return = SecretsStore::new();
@@ -1117,13 +1106,34 @@ pub fn create_connect_transaction(addresses: Vec<String>, fee_rate: u32) -> ApiR
         secrets_return.confirm_secret_for_address(secret, address);
     }
 
+    let outputs = local_device.get_mut_outputs();
+    let new_txid = unsigned_tx.unsigned_tx.as_ref().unwrap().txid();
+    // We mark the utxos in the inputs as spent to prevent accidental double spends
+    for input in &unsigned_tx.unsigned_tx.as_ref().unwrap().input {
+        if let Some(output) = outputs.get_mut(&input.previous_output) {
+            output.spend_status = OutputSpendStatus::Spent(new_txid.to_string());
+        }
+    }
+
     Ok(ApiReturn {
-        new_tx_to_send: Some(NewTxMessage::new(serialize(&transaction).to_lower_hex_string(), None)),
         secrets: Some(secrets_return),
+        partial_tx: Some(TsUnsignedTransaction::new(unsigned_tx)),
         ..Default::default()
     })
 }
 
+#[wasm_bindgen]
+pub fn sign_transaction(partial_tx: TsUnsignedTransaction) -> ApiResult<ApiReturn> {
+    let local_device = lock_local_device()?;
+    let partial_tweak = partial_tx.as_inner().partial_secret;
+    let tx = internal_sign_tx(local_device.get_sp_client(), partial_tx.to_inner())?;
+    let res = ApiReturn {
+        new_tx_to_send: Some(NewTxMessage::new(serialize(&tx).to_lower_hex_string(), Some(partial_tweak.secret_bytes().to_lower_hex_string()))),
+        ..Default::default()
+    };
+    Ok(res)
+}
+
 #[wasm_bindgen]
 pub fn create_new_process(
     private_data: Pcd,
@@ -1134,10 +1144,18 @@ pub fn create_new_process(
     members_list: OutPointMemberMap,
 ) -> ApiResult<ApiReturn> {
     // We create a transaction that spends to the relay address
-    let psbt = create_transaction_for_addresses(vec![relay_address.clone()], fee_rate)?;
+    let local_device = lock_local_device()?;
+
+    let mut freezed_utxos = lock_freezed_utxos()?;
+
+    let relay_address: SilentPaymentAddress = relay_address.try_into()?;
+
+    let tx = create_transaction_for_addresses(&local_device, &freezed_utxos, &vec![relay_address], fee_rate)?;
+
+    let unsigned_transaction = SpClient::finalize_transaction(tx)?;
 
     // We take the secret out
-    let new_secrets = get_shared_secrets_in_transaction(&psbt, vec![relay_address])?;
+    let new_secrets = get_shared_secrets_in_transaction(&unsigned_transaction, &vec![relay_address])?;
 
     let mut shared_secrets = lock_shared_secrets()?;
     let mut secrets_return = SecretsStore::new();
@@ -1146,12 +1164,8 @@ pub fn create_new_process(
         secrets_return.confirm_secret_for_address(secret, address);
     }
 
-    let transaction = psbt.extract_tx()?;
-
     // We now have the outpoint that will serve as id for the whole process
-    let process_id = OutPoint::new(transaction.txid(), 0);
-
-    let new_tx_msg = NewTxMessage::new(serialize(&transaction).to_lower_hex_string(), None);
+    let process_id = OutPoint::new(unsigned_transaction.unsigned_tx.as_ref().unwrap().txid(), 0);
 
     let mut new_state = ProcessState::new(process_id, private_data.clone(), public_data.clone(), roles.clone())?;
 
@@ -1159,7 +1173,7 @@ pub fn create_new_process(
 
     let mut process = Process::new(process_id);
 
-    let diffs = create_diffs(&process, &new_state, &members_list)?;
+    let diffs = create_diffs(&local_device, &process, &new_state, &members_list)?;
 
     let mut encrypted_data = BTreeMap::new();
 
@@ -1204,7 +1218,7 @@ pub fn create_new_process(
         secrets: Some(secrets_return),
         commit_to_send: Some(commit_msg),
         updated_process: Some(updated_process),
-        new_tx_to_send: Some(new_tx_msg),
+        partial_tx: Some(TsUnsignedTransaction::new(unsigned_transaction)),
         ..Default::default()
     })
 }
@@ -1247,7 +1261,7 @@ pub fn update_process(
         return Err(ApiError::new("New state already known".to_owned()));
     }
 
-    let diffs = create_diffs(&process, &new_state, &members_list)?;
+    let diffs = create_diffs(&lock_local_device()?, &process, &new_state, &members_list)?;
 
     let all_fields: Vec<String> = new_attributes.iter().map(|(field, _)| field.clone()).collect();
     let mut encrypted_data = BTreeMap::new();
@@ -1300,8 +1314,7 @@ pub fn request_data(process_id: String, state_ids_str: Vec<String>, roles: JsVal
     let process_id = OutPoint::from_str(&process_id)?;
     let local_device = lock_local_device()?;
     let sender_pairing_id = local_device.get_pairing_commitment().ok_or(ApiError::new("Device not paired".to_owned()))?;
-    let sp_wallet = local_device.get_wallet();
-    let local_address = sp_wallet.get_client().get_receiving_address();
+    let local_address = local_device.get_address().to_string();
     let roles: Vec<Roles> = serde_wasm_bindgen::from_value(roles)?;
 
     let mut state_ids: Vec<[u8; 32]> = vec![];
@@ -1337,7 +1350,7 @@ pub fn request_data(process_id: String, state_ids_str: Vec<String>, roles: JsVal
         state_ids
     );
 
-    let prd_msg = prd_request.to_network_msg(sp_wallet)?;
+    let prd_msg = prd_request.to_network_msg(local_device.get_sp_client())?;
 
     // For now, we just send the request to all members we share the data with, but this could be refined
     let shared_secrets = lock_shared_secrets()?;
@@ -1370,8 +1383,7 @@ pub fn create_update_message(
 
     let local_device = lock_local_device()?;
 
-    let sp_wallet = local_device.get_wallet();
-    let local_address = sp_wallet.get_client().get_receiving_address();
+    let local_address = local_device.get_address().to_string();
 
     let mut all_members: HashMap<Member, HashSet<String>> = HashMap::new();
     let shared_secrets = lock_shared_secrets()?;
@@ -1420,7 +1432,7 @@ pub fn create_update_message(
     for (member, visible_fields) in all_members {
         let mut prd = full_prd.clone();
         prd.filter_keys(&visible_fields);
-        let prd_msg = prd.to_network_msg(sp_wallet)?;
+        let prd_msg = prd.to_network_msg(local_device.get_sp_client())?;
 
         let addresses = member.get_addresses();
         for sp_address in addresses.into_iter() {
@@ -1491,12 +1503,10 @@ fn add_validation_token(mut process: Process, state_id: String, approval: bool,
 
     {
         let local_device = lock_local_device()?;
-        let sp_wallet = local_device.get_wallet();
-        let proof = Proof::new(message_hash, sp_wallet.get_client().get_spend_key().try_into()?);
+        let proof = Proof::new(message_hash, local_device.get_sp_client().get_spend_key().try_into()?);
         update_state.validation_tokens.push(proof);
     }
 
-
     let mut commit_msg = CommitMessage::new(
         process_id,
         update_state.pcd_commitment.clone(), 
@@ -1539,8 +1549,7 @@ pub fn create_response_prd(process: Process, state_id: String, members_list: Out
 
 fn new_response_prd(process_id: OutPoint, update_state: &ProcessState, members_list: &OutPointMemberMap) -> AnyhowResult<Vec<String>> {
     let local_device = lock_local_device()?;
-    let sp_wallet = local_device.get_wallet();
-    let local_address = sp_wallet.get_client().get_receiving_address();
+    let local_address = local_device.get_address().to_string();
 
     let mut all_members: HashMap<Member, HashSet<String>> = HashMap::new();
     let shared_secrets = lock_shared_secrets()?;
@@ -1586,7 +1595,7 @@ fn new_response_prd(process_id: OutPoint, update_state: &ProcessState, members_l
         vec![*proof], 
         update_state.pcd_commitment.clone(),
     );
-    let prd_msg = response_prd.to_network_msg(sp_wallet)?;
+    let prd_msg = response_prd.to_network_msg(local_device.get_sp_client())?;
 
     let mut ciphers = vec![];
     for (member, visible_fields) in all_members {
@@ -1620,11 +1629,11 @@ pub struct encryptWithNewKeyResult {
 #[wasm_bindgen]
 pub fn create_faucet_msg() -> ApiResult<String> {
     let sp_address = lock_local_device()?
-        .get_wallet()
-        .get_client()
-        .get_receiving_address();
+        .get_sp_client()
+        .get_receiving_address()
+        .to_string();
 
-    let faucet_msg = FaucetMessage::new(sp_address.clone());
+    let faucet_msg = FaucetMessage::new(sp_address);
 
     Ok(faucet_msg.to_string())
 }
diff --git a/src/user.rs b/src/user.rs
index 6097f17..df50c8e 100644
--- a/src/user.rs
+++ b/src/user.rs
@@ -8,7 +8,7 @@ use sdk_common::sp_client::bitcoin::secp256k1::{PublicKey, SecretKey, ThirtyTwoB
 use sdk_common::sp_client::bitcoin::{
     Network, OutPoint, ScriptBuf, Transaction, Txid, XOnlyPublicKey,
 };
-use sdk_common::sp_client::spclient::SpClient;
+use sdk_common::sp_client::SpClient;
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
 use tsify::Tsify;
@@ -24,8 +24,10 @@ use std::sync::{Mutex, MutexGuard, OnceLock};
 use sdk_common::device::Device;
 use sdk_common::sp_client::bitcoin::secp256k1::constants::SECRET_KEY_SIZE;
 use sdk_common::sp_client::silentpayments::bitcoin_hashes::sha256;
-use sdk_common::sp_client::silentpayments::utils::{Network as SpNetwork, SilentPaymentAddress};
-use sdk_common::sp_client::spclient::{OutputList, SpWallet, SpendKey};
+use sdk_common::sp_client::silentpayments::{
+    Network as SpNetwork, 
+    SilentPaymentAddress
+};
 
 use crate::peers::Peer;
 use crate::wallet::generate_sp_wallet;
@@ -34,22 +36,20 @@ use sdk_common::crypto::{AeadCore, Aes256Gcm, KeyInit};
 
 pub static LOCAL_DEVICE: OnceLock<Mutex<Device>> = OnceLock::new();
 
-pub fn set_new_device(sp_wallet: SpWallet) -> Result<String> {
-    let mut device = Device::new(sp_wallet);
+pub fn set_new_device(sp_client: SpClient) -> Result<String> {
+    let mut device = Device::new(sp_client);
 
     let mut local_device = lock_local_device()?;
-    if *local_device.get_wallet().get_client() != SpClient::default() {
+    if *local_device.get_sp_client() != SpClient::default() {
         return Err(Error::msg("Device already initialized".to_owned()));
     } else {
         *local_device = device;
     }
 
     let our_address = local_device
-        .get_wallet()
-        .get_client()
-        .get_receiving_address();
+        .get_address();
 
-    Ok(our_address)
+    Ok(our_address.to_string())
 }
 
 pub fn lock_local_device() -> Result<MutexGuard<'static, Device>> {
diff --git a/src/wallet.rs b/src/wallet.rs
index c82f079..54f62eb 100644
--- a/src/wallet.rs
+++ b/src/wallet.rs
@@ -6,9 +6,9 @@ use std::{
 use anyhow::Error;
 use rand::Rng;
 use sdk_common::sp_client::{
-    bitcoin::{Network, OutPoint},
-    silentpayments::utils::SilentPaymentAddress,
-    spclient::{derive_keys_from_seed, SpClient, SpWallet, SpendKey},
+    bitcoin::{secp256k1::SecretKey, Network, OutPoint},
+    silentpayments::SilentPaymentAddress,
+    SpClient, SpendKey,
 };
 
 use crate::MutexExt;
@@ -21,24 +21,11 @@ pub fn lock_freezed_utxos() -> Result<MutexGuard<'static, HashSet<OutPoint>>, Er
         .lock_anyhow()
 }
 
-pub fn generate_sp_wallet(label: Option<String>, network: Network) -> anyhow::Result<SpWallet> {
-    let mut seed = [0u8; 64];
-    rand::thread_rng().fill(&mut seed);
-    let (scan_sk, spend_sk) = derive_keys_from_seed(&seed, network)?;
-    let sp_client = SpClient::new(
-        label.unwrap_or("default".into()),
-        scan_sk,
-        SpendKey::Secret(spend_sk),
-        None,
+pub fn generate_sp_wallet(network: Network) -> anyhow::Result<SpClient> {
+    let mut rng = rand::thread_rng();
+    SpClient::new(
+        SecretKey::new(&mut rng),
+        SpendKey::Secret(SecretKey::new(&mut rng)),
         network,
-    )?;
-    let our_address: SilentPaymentAddress = sp_client.get_receiving_address().try_into()?;
-    sdk_common::log::info!(
-        "Created client for sp with address: {}",
-        our_address.to_string()
-    );
-
-    let res = SpWallet::new(sp_client, None, vec![])?;
-
-    Ok(res)
+    )
 }