diff --git a/Cargo.toml b/Cargo.toml
index c699b80..e60aae3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 
 members = [
     "lib",
diff --git a/app/src/gui/deposit.rs b/app/src/gui/deposit.rs
index c913de8..f4fdf5a 100644
--- a/app/src/gui/deposit.rs
+++ b/app/src/gui/deposit.rs
@@ -41,7 +41,7 @@ impl Deposit {
             .add_enabled(amount.is_ok() && fee.is_ok(), egui::Button::new("deposit"))
             .clicked()
         {
-            app.deposit(
+            let _ = app.deposit(
                 amount.expect("should not happen"),
                 fee.expect("should not happen"),
             );
diff --git a/app/src/gui/mempool_explorer.rs b/app/src/gui/mempool_explorer.rs
index 5aa5c2f..2581510 100644
--- a/app/src/gui/mempool_explorer.rs
+++ b/app/src/gui/mempool_explorer.rs
@@ -7,19 +7,14 @@ use lib::{
     types::{GetValue, OutPoint},
 };
 
+#[derive(Default)]
 pub struct MemPoolExplorer {
     current: usize,
 }
 
-impl Default for MemPoolExplorer {
-    fn default() -> Self {
-        Self { current: 0 }
-    }
-}
-
 impl MemPoolExplorer {
     pub fn show(&mut self, app: &mut App, ui: &mut egui::Ui) {
-        let transactions = app.node.get_all_transactions().unwrap_or(vec![]);
+        let transactions = app.node.get_all_transactions().unwrap_or_default();
         let utxos = app.wallet.get_utxos().unwrap_or_default();
         egui::SidePanel::left("transaction_picker")
             .resizable(false)
@@ -50,7 +45,7 @@ impl MemPoolExplorer {
                             let txid = &format!("{}", transaction.transaction.txid())[0..8];
                             if value_in >= value_out {
                                 let fee = value_in - value_out;
-                                ui.selectable_value(&mut self.current, index, format!("{txid}"));
+                                ui.selectable_value(&mut self.current, index, txid.to_string());
                                 ui.with_layout(
                                     egui::Layout::right_to_left(egui::Align::Max),
                                     |ui| {
@@ -67,7 +62,7 @@ impl MemPoolExplorer {
                                 );
                                 ui.end_row();
                             } else {
-                                ui.selectable_value(&mut self.current, index, format!("{txid}"));
+                                ui.selectable_value(&mut self.current, index, txid.to_string());
                                 ui.monospace("invalid");
                                 ui.end_row();
                             }
@@ -100,7 +95,7 @@ impl MemPoolExplorer {
                             let output = &utxos[input];
                             let hash = &hash[0..8];
                             let value = bitcoin::Amount::from_sat(output.get_value());
-                            ui.monospace(format!("{kind}",));
+                            ui.monospace(kind.to_string());
                             ui.monospace(format!("{hash}:{vout}",));
                             ui.monospace(format!("{value}",));
                             ui.end_row();
@@ -121,7 +116,7 @@ impl MemPoolExplorer {
                             let address = &format!("{}", output.address)[0..8];
                             let value = bitcoin::Amount::from_sat(output.get_value());
                             ui.monospace(format!("{vout}"));
-                            ui.monospace(format!("{address}"));
+                            ui.monospace(address.to_string());
                             ui.monospace(format!("{value}"));
                             ui.end_row();
                         }
diff --git a/app/src/gui/miner.rs b/app/src/gui/miner.rs
index 3193ee2..c72ab9d 100644
--- a/app/src/gui/miner.rs
+++ b/app/src/gui/miner.rs
@@ -19,7 +19,7 @@ impl Miner {
         let best_hash = &format!("{best_hash}")[0..8];
         ui.monospace(format!("{best_hash}..."));
         if ui.button("mine").clicked() {
-            app.mine();
+            let _ = app.mine();
         }
     }
 }
diff --git a/app/src/gui/mod.rs b/app/src/gui/mod.rs
index d3a4a78..86759d4 100644
--- a/app/src/gui/mod.rs
+++ b/app/src/gui/mod.rs
@@ -53,9 +53,9 @@ impl EguiApp {
         Self {
             app,
             set_seed: SetSeed::default(),
-            miner: Miner::default(),
+            miner: Miner,
             deposit: Deposit::default(),
-            utxo_selector: UtxoSelector::default(),
+            utxo_selector: UtxoSelector,
             utxo_creator: UtxoCreator::default(),
             mempool_explorer: MemPoolExplorer::default(),
             block_explorer: BlockExplorer::new(height),
@@ -136,7 +136,7 @@ impl eframe::App for EguiApp {
                                     self.app.transaction.inputs.iter().enumerate()
                                 {
                                     let output = &self.app.utxos[&outpoint];
-                                    show_utxo(ui, &outpoint, output);
+                                    show_utxo(ui, outpoint, output);
                                     if ui.button("remove").clicked() {
                                         remove = Some(vout);
                                     }
@@ -170,7 +170,7 @@ impl eframe::App for EguiApp {
                                     let address = &format!("{}", output.address)[0..8];
                                     let value = bitcoin::Amount::from_sat(output.get_value());
                                     ui.monospace(format!("{vout}"));
-                                    ui.monospace(format!("{address}"));
+                                    ui.monospace(address.to_string());
                                     ui.with_layout(
                                         egui::Layout::right_to_left(egui::Align::Max),
                                         |ui| {
@@ -222,7 +222,7 @@ impl eframe::App for EguiApp {
         } else {
             egui::CentralPanel::default().show(ctx, |_ui| {
                 egui::Window::new("Set Seed").show(ctx, |ui| {
-                    self.set_seed.show(&mut self.app, ui);
+                    self.set_seed.show(&self.app, ui);
                 });
             });
         }
diff --git a/app/src/gui/utxo_selector.rs b/app/src/gui/utxo_selector.rs
index 2bfd198..93bc8cb 100644
--- a/app/src/gui/utxo_selector.rs
+++ b/app/src/gui/utxo_selector.rs
@@ -20,7 +20,7 @@ impl UtxoSelector {
             .filter(|(outpoint, _)| !selected.contains(outpoint))
             .map(|(_, output)| output.get_value())
             .sum();
-        let mut utxos: Vec<_> = utxos.into_iter().collect();
+        let mut utxos: Vec<_> = utxos.iter().collect();
         utxos.sort_by_key(|(outpoint, _)| format!("{outpoint}"));
         ui.separator();
         ui.monospace(format!("Total: {}", bitcoin::Amount::from_sat(total)));
@@ -57,7 +57,7 @@ pub fn show_utxo(ui: &mut egui::Ui, outpoint: &OutPoint, output: &Output) {
     };
     let hash = &hash[0..8];
     let value = bitcoin::Amount::from_sat(output.get_value());
-    ui.monospace(format!("{kind}",));
+    ui.monospace(kind.to_string());
     ui.monospace(format!("{hash}:{vout}",));
     ui.with_layout(egui::Layout::right_to_left(egui::Align::Max), |ui| {
         ui.monospace(format!("{value}"));
diff --git a/app/src/gui/withdrawals.rs b/app/src/gui/withdrawals.rs
index f510232..24a9bc4 100644
--- a/app/src/gui/withdrawals.rs
+++ b/app/src/gui/withdrawals.rs
@@ -4,14 +4,9 @@ use eframe::egui;
 use lib::bip300301::bitcoin;
 use lib::types::GetValue;
 
+#[derive(Default)]
 pub struct Withdrawals {}
 
-impl Default for Withdrawals {
-    fn default() -> Self {
-        Self {}
-    }
-}
-
 impl Withdrawals {
     pub fn show(&mut self, app: &mut App, ui: &mut egui::Ui) {
         ui.heading("Pending withdrawals");
diff --git a/lib/src/mempool.rs b/lib/src/mempool.rs
index 32ce5af..3b1612b 100644
--- a/lib/src/mempool.rs
+++ b/lib/src/mempool.rs
@@ -32,7 +32,7 @@ impl MemPool {
             self.spent_utxos.put(txn, input, &())?;
         }
         self.transactions
-            .put(txn, &transaction.transaction.txid().into(), &transaction)?;
+            .put(txn, &transaction.transaction.txid().into(), transaction)?;
         Ok(())
     }
 
diff --git a/lib/src/net.rs b/lib/src/net.rs
index 730fe7b..40980f8 100644
--- a/lib/src/net.rs
+++ b/lib/src/net.rs
@@ -67,17 +67,11 @@ pub enum Response {
     TransactionRejected,
 }
 
-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, Default)]
 pub struct PeerState {
     pub block_height: u32,
 }
 
-impl Default for PeerState {
-    fn default() -> Self {
-        Self { block_height: 0 }
-    }
-}
-
 impl Net {
     pub fn new(bind_addr: SocketAddr) -> Result<Self, Error> {
         let (server, _) = make_server_endpoint(bind_addr)?;
diff --git a/lib/src/node.rs b/lib/src/node.rs
index eeba2f7..43ecc4b 100644
--- a/lib/src/node.rs
+++ b/lib/src/node.rs
@@ -96,8 +96,8 @@ impl Node {
     ) -> Result<(), Error> {
         {
             let mut txn = self.env.write_txn()?;
-            self.validate_transaction(&txn, &transaction)?;
-            self.mempool.put(&mut txn, &transaction)?;
+            self.validate_transaction(&txn, transaction)?;
+            self.mempool.put(&mut txn, transaction)?;
             txn.commit()?;
         }
         for peer in self.net.peers.read().await.values() {
@@ -206,13 +206,13 @@ impl Node {
                 .await?;
             let mut txn = self.env.write_txn()?;
             let height = self.archive.get_height(&txn)?;
-            self.state.validate_body(&txn, &body, height)?;
-            self.state.connect_body(&mut txn, &body)?;
+            self.state.validate_body(&txn, body, height)?;
+            self.state.connect_body(&mut txn, body)?;
             self.state
                 .connect_two_way_peg_data(&mut txn, &two_way_peg_data, height)?;
             let bundle = self.state.get_pending_withdrawal_bundle(&txn)?;
-            self.archive.append_header(&mut txn, &header)?;
-            self.archive.put_body(&mut txn, &header, &body)?;
+            self.archive.append_header(&mut txn, header)?;
+            self.archive.put_body(&mut txn, header, body)?;
             for transaction in &body.transactions {
                 self.mempool.delete(&mut txn, &transaction.txid())?;
             }
@@ -320,7 +320,7 @@ impl Node {
                         send.write_all(&response)
                             .await
                             .map_err(crate::net::Error::from)?;
-                        return Err(err.into());
+                        return Err(err);
                     }
                     Ok(_) => {
                         {
diff --git a/lib/src/state.rs b/lib/src/state.rs
index ac425f9..3ac6200 100644
--- a/lib/src/state.rs
+++ b/lib/src/state.rs
@@ -185,7 +185,7 @@ impl State {
         let commitment = hash(&inputs);
         let script = script::Builder::new()
             .push_opcode(opcodes::all::OP_RETURN)
-            .push_slice(&commitment)
+            .push_slice(commitment)
             .into_script();
         let inputs_commitment_txout = bitcoin::TxOut {
             value: 0,
@@ -321,7 +321,7 @@ impl State {
         &self,
         txn: &RoTxn,
     ) -> Result<Option<bitcoin::BlockHash>, Error> {
-        Ok(self.last_deposit_block.get(&txn, &0)?)
+        Ok(self.last_deposit_block.get(txn, &0)?)
     }
 
     pub fn connect_two_way_peg_data(
diff --git a/lib/src/types/mod.rs b/lib/src/types/mod.rs
index 7e3c536..9e2028b 100644
--- a/lib/src/types/mod.rs
+++ b/lib/src/types/mod.rs
@@ -4,12 +4,12 @@ use std::{cmp::Ordering, collections::HashMap};
 
 mod address;
 mod hashes;
-mod types;
+mod transaction;
 
 pub use blake3;
 pub use bs58;
 pub use serde;
-pub use types::*;
+pub use transaction::*;
 
 /*
 // Replace () with a type (usually an enum) for output data specific for your sidechain.
@@ -29,7 +29,7 @@ pub struct Header {
 
 impl Header {
     pub fn hash(&self) -> BlockHash {
-        types::hash(self).into()
+        transaction::hash(self).into()
     }
 }
 
@@ -41,13 +41,13 @@ pub enum WithdrawalBundleStatus {
 
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct WithdrawalBundle {
-    pub spent_utxos: HashMap<types::OutPoint, types::Output>,
+    pub spent_utxos: HashMap<transaction::OutPoint, transaction::Output>,
     pub transaction: bitcoin::Transaction,
 }
 
 #[derive(Default, Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct TwoWayPegData {
-    pub deposits: HashMap<types::OutPoint, types::Output>,
+    pub deposits: HashMap<transaction::OutPoint, transaction::Output>,
     pub deposit_block_hash: Option<bitcoin::BlockHash>,
     pub bundle_statuses: HashMap<bitcoin::Txid, WithdrawalBundleStatus>,
 }
@@ -66,7 +66,7 @@ pub struct DisconnectData {
 
 #[derive(Eq, PartialEq, Clone, Debug)]
 pub struct AggregatedWithdrawal {
-    pub spent_utxos: HashMap<OutPoint, types::Output>,
+    pub spent_utxos: HashMap<OutPoint, transaction::Output>,
     pub main_address: bitcoin::Address<bitcoin::address::NetworkUnchecked>,
     pub value: u64,
     pub main_fee: u64,
diff --git a/lib/src/types/types.rs b/lib/src/types/transaction.rs
similarity index 100%
rename from lib/src/types/types.rs
rename to lib/src/types/transaction.rs
diff --git a/lib/src/wallet.rs b/lib/src/wallet.rs
index 2aca388..73c5520 100644
--- a/lib/src/wallet.rs
+++ b/lib/src/wallet.rs
@@ -44,7 +44,7 @@ impl Wallet {
 
     pub fn set_seed(&self, seed: &[u8; 64]) -> Result<(), Error> {
         let mut txn = self.env.write_txn()?;
-        self.seed.put(&mut txn, &0, &seed)?;
+        self.seed.put(&mut txn, &0, seed)?;
         self.address_to_index.clear(&mut txn)?;
         self.index_to_address.clear(&mut txn)?;
         self.utxos.clear(&mut txn)?;
@@ -129,7 +129,7 @@ impl Wallet {
         if total < value {
             return Err(Error::NotEnoughFunds);
         }
-        return Ok((total, selected));
+        Ok((total, selected))
     }
 
     pub fn delete_utxos(&self, outpoints: &[OutPoint]) -> Result<(), Error> {