diff --git a/.gitignore b/.gitignore
index ccf9db4..18f8e7e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ bin/
 pkg/
 wasm-pack.log
 .vscode
+!zwaves_setup/src/bin
diff --git a/zwaves_setup/src/bin/contribute.rs b/zwaves_setup/src/bin/contribute.rs
new file mode 100644
index 0000000..46bd5eb
--- /dev/null
+++ b/zwaves_setup/src/bin/contribute.rs
@@ -0,0 +1,67 @@
+use bellman::{Circuit, ConstraintSystem, SynthesisError};
+use sapling_crypto::jubjub::{JubjubEngine, JubjubParams, JubjubBls12};
+use pairing::bls12_381::{Bls12, Fr};
+use rand::os::OsRng;
+use rand::Rng;
+
+use std::fs::File;
+use std::io::{Write, Read};
+use zwaves_circuit::circuit::{UtxoAccumulator, Transfer};
+
+use hex::encode;
+
+
+fn main() -> std::io::Result<()> {
+    let rng = &mut OsRng::new().unwrap();
+    let jubjub_params = JubjubBls12::new();
+
+    let params_file = File::open("mpc_params_accumulator")?;
+    let mut params = phase2::MPCParameters::read(&params_file, true)?;
+    drop(params_file);
+
+    let contributions = params.verify(UtxoAccumulator::<Bls12> {
+        params: &jubjub_params,
+        note_hashes: [None, None],
+        index: None,
+        old_proof: None,
+        new_proof: None
+    }).expect("parameters should be valid!");
+
+
+    let hash = params.contribute(rng);
+
+    println!("Contributed with hash {}", encode(hash.as_ref()));
+
+
+    let params_file = File::create("mpc_params_accumulator")?;
+    params.write(params_file)?;
+
+
+    let params_file = File::open("mpc_params_transfer")?;
+    let mut params = phase2::MPCParameters::read(&params_file, true)?;
+    drop(params_file);
+
+    let contributions = params.verify(Transfer::<Bls12> {
+        params: &jubjub_params,
+        receiver: None,
+        in_note: [None, None],
+        out_note: [None, None],
+        in_proof: [None, None],
+        root_hash: None,
+        sk: None,
+        packed_asset:None,
+    }).expect("parameters should be valid!");
+
+
+    let hash = params.contribute(rng);
+
+    println!("Contributed with hash {}", encode(hash.as_ref()));
+
+
+    let params_file = File::create("mpc_params_transfer")?;
+    params.write(params_file)?;
+
+
+    println!("MPC params saved OK");
+    Ok(())
+}
diff --git a/zwaves_setup/src/bin/list.rs b/zwaves_setup/src/bin/list.rs
new file mode 100644
index 0000000..3b27e49
--- /dev/null
+++ b/zwaves_setup/src/bin/list.rs
@@ -0,0 +1,62 @@
+use bellman::{Circuit, ConstraintSystem, SynthesisError};
+use sapling_crypto::jubjub::{JubjubEngine, JubjubParams, JubjubBls12};
+use pairing::bls12_381::{Bls12, Fr};
+
+
+use std::fs::File;
+use std::io::Read;
+
+use zwaves_circuit::circuit::{Transfer, UtxoAccumulator};
+use hex::encode;
+
+
+fn main() -> std::io::Result<()> {
+    let jubjub_params = JubjubBls12::new();
+
+
+    let params_file = File::open("mpc_params_accumulator")?;
+    let mut params = phase2::MPCParameters::read(&params_file, true)?;
+    drop(params_file);
+
+    let contributions = params.verify(UtxoAccumulator::<Bls12> {
+        params: &jubjub_params,
+        note_hashes: [None, None],
+        index: None,
+        old_proof: None,
+        new_proof: None
+    }).expect("parameters should be valid!");
+
+    println!("List of all contributions:");
+
+    contributions.into_iter().enumerate().for_each(|(i, h)| {
+        println!("{}. {}", i, encode(h.as_ref()));
+    });
+
+    
+
+    let params_file = File::open("mpc_params_transfer")?;
+    let mut params = phase2::MPCParameters::read(&params_file, true)?;
+    drop(params_file);
+
+    let contributions = params.verify(Transfer::<Bls12> {
+        params: &jubjub_params,
+        receiver: None,
+        in_note: [None, None],
+        out_note: [None, None],
+        in_proof: [None, None],
+        root_hash: None,
+        packed_asset: None,
+        sk: None
+    }).expect("parameters should be valid!");
+
+    println!("List of all contributions:");
+
+    contributions.into_iter().enumerate().for_each(|(i, h)| {
+        println!("{}. {}", i, encode(h.as_ref()));
+    });
+
+    
+
+ 
+    Ok(())
+}
diff --git a/zwaves_setup/src/bin/new.rs b/zwaves_setup/src/bin/new.rs
new file mode 100644
index 0000000..76476c0
--- /dev/null
+++ b/zwaves_setup/src/bin/new.rs
@@ -0,0 +1,43 @@
+use sapling_crypto::jubjub::{JubjubEngine, JubjubParams, JubjubBls12};
+use pairing::bls12_381::{Bls12, Fr};
+use std::fs::File;
+use std::io::Write;
+
+use zwaves_circuit::circuit::{UtxoAccumulator, Transfer};
+
+
+
+
+
+fn main() -> std::io::Result<()> {
+    let jubjub_params = JubjubBls12::new();
+/*
+    let params = phase2::MPCParameters::new(UtxoAccumulator::<Bls12> {
+        params: &jubjub_params,
+        note_hashes: [None, None],
+        index: None,
+        old_proof: None,
+        new_proof: None
+    }).unwrap();
+
+    let params_file = File::create("mpc_params_accumulator")?;
+    params.write(params_file)?;*/
+
+
+    let params = phase2::MPCParameters::new(Transfer::<Bls12> {
+        params: &jubjub_params,
+        receiver: None,
+        in_note: [None, None],
+        out_note: [None, None],
+        in_proof: [None, None],
+        root_hash: None,
+        packed_asset: None,
+        sk: None
+    }).unwrap();
+
+    let params_file = File::create("mpc_params_transfer")?;
+    params.write(params_file)?;
+
+    println!("MPC params saved OK");
+    Ok(())
+}