diff --git a/rust/pczt/build.rs b/rust/pczt/build.rs
new file mode 100644
index 000000000..257ea8d40
--- /dev/null
+++ b/rust/pczt/build.rs
@@ -0,0 +1,4 @@
+fn main() -> Result<(), std::io::Error> {
+    prost_build::Config::new().out_dir("src/pb").compile_protos(&["src/protos/pczt.proto"], &["src/"])?;
+    Ok(())
+}
diff --git a/rust/pczt/src/lib.rs b/rust/pczt/src/lib.rs
index 7d12d9af8..f73d222b4 100644
--- a/rust/pczt/src/lib.rs
+++ b/rust/pczt/src/lib.rs
@@ -1,14 +1,5 @@
-pub fn add(left: usize, right: usize) -> usize {
-    left + right
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
+#![no_std]
 
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
+pub mod protos {
+    include!("pb/pczt.rs");
 }
diff --git a/rust/pczt/src/pb/pczt.rs b/rust/pczt/src/pb/pczt.rs
new file mode 100644
index 000000000..04180369c
--- /dev/null
+++ b/rust/pczt/src/pb/pczt.rs
@@ -0,0 +1,167 @@
+// This file is @generated by prost-build.
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PartiallyCreatedTransaction {
+    /// The version of this wire format, for storage.
+    #[prost(uint32, tag = "1")]
+    pub proto_version: u32,
+    #[prost(message, optional, tag = "2")]
+    pub global: ::core::option::Option<PcztGlobal>,
+    #[prost(message, optional, tag = "3")]
+    pub transparent: ::core::option::Option<PcztTransparent>,
+    #[prost(message, optional, tag = "4")]
+    pub sapling: ::core::option::Option<PcztSapling>,
+    #[prost(message, optional, tag = "5")]
+    pub orchard: ::core::option::Option<PcztOrchard>,
+}
+#[derive(Clone, Copy, PartialEq, ::prost::Message)]
+pub struct PcztGlobal {
+    #[prost(uint32, tag = "1")]
+    pub tx_version: u32,
+    /// is versionGroupId still needed?
+    #[prost(fixed32, tag = "2")]
+    pub version_group_id: u32,
+    #[prost(uint32, tag = "3")]
+    pub lock_time: u32,
+    #[prost(uint32, tag = "4")]
+    pub expiry_height: u32,
+    #[prost(uint32, tag = "5")]
+    pub consensus_branch_id: u32,
+    #[prost(uint32, tag = "6")]
+    pub network_id: u32,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztTransparent {
+    #[prost(message, repeated, tag = "1")]
+    pub inputs: ::prost::alloc::vec::Vec<PcztTransparentInput>,
+    #[prost(message, repeated, tag = "2")]
+    pub outputs: ::prost::alloc::vec::Vec<PcztTransparentOutput>,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztTransparentInput {
+    #[prost(bytes = "vec", tag = "1")]
+    pub pubkey: ::prost::alloc::vec::Vec<u8>,
+    #[prost(message, optional, tag = "2")]
+    pub previous_coin: ::core::option::Option<PcztTransparentCoin>,
+    #[prost(message, optional, tag = "3")]
+    pub previous_outpoint: ::core::option::Option<PcztTransparentOutpoint>,
+    #[prost(message, optional, tag = "4")]
+    pub path: ::core::option::Option<PcztDerivationPath>,
+    #[prost(bytes = "vec", repeated, tag = "5")]
+    pub signatures: ::prost::alloc::vec::Vec<::prost::alloc::vec::Vec<u8>>,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztTransparentCoin {
+    #[prost(uint64, tag = "1")]
+    pub value: u64,
+    #[prost(bytes = "vec", tag = "2")]
+    pub script_pubkey: ::prost::alloc::vec::Vec<u8>,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztTransparentOutput {
+    #[prost(message, optional, tag = "1")]
+    pub coin: ::core::option::Option<PcztTransparentCoin>,
+    /// if an output has path, it is a change output
+    #[prost(message, optional, tag = "2")]
+    pub path: ::core::option::Option<PcztDerivationPath>,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztTransparentOutpoint {
+    #[prost(bytes = "vec", tag = "1")]
+    pub tx_hash: ::prost::alloc::vec::Vec<u8>,
+    #[prost(uint32, tag = "2")]
+    pub index: u32,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztDerivationPath {
+    /// the 32 bytes seed fingerprint;
+    #[prost(bytes = "vec", tag = "1")]
+    pub seed_fingerprint: ::prost::alloc::vec::Vec<u8>,
+    /// for orchard it should be pk_d(DiversifiedTransmissionKey)
+    /// hardware wallet should check this with the derived key from it self.
+    #[prost(bytes = "vec", tag = "2")]
+    pub pubkey: ::prost::alloc::vec::Vec<u8>,
+    #[prost(message, repeated, tag = "3")]
+    pub path_components: ::prost::alloc::vec::Vec<PathComponent>,
+}
+#[derive(Clone, Copy, PartialEq, ::prost::Message)]
+pub struct PathComponent {
+    #[prost(uint32, tag = "1")]
+    pub value: u32,
+    #[prost(bool, tag = "2")]
+    pub harden: bool,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztOrchard {
+    #[prost(uint32, tag = "1")]
+    pub flag: u32,
+    #[prost(int64, tag = "2")]
+    pub value_balance: i64,
+    #[prost(bytes = "vec", tag = "3")]
+    pub anchor: ::prost::alloc::vec::Vec<u8>,
+    #[prost(message, repeated, tag = "4")]
+    pub actions: ::prost::alloc::vec::Vec<PcztOrchardAction>,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztOrchardAction {
+    #[prost(bytes = "vec", tag = "1")]
+    pub nf: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "2")]
+    pub rk: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "3")]
+    pub cmx: ::prost::alloc::vec::Vec<u8>,
+    /// (epk, enc_ciphertext, out_ciphertext)
+    #[prost(bytes = "vec", tag = "4")]
+    pub encrypted_note: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "5")]
+    pub cv_net: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "6")]
+    pub alpha: ::prost::alloc::vec::Vec<u8>,
+    /// the serilized spend note(rho, rseed, value, receipent) of this action, to verify the nf and cmx in this action.
+    #[prost(bytes = "vec", tag = "7")]
+    pub spend_note: ::prost::alloc::vec::Vec<u8>,
+    #[prost(message, optional, tag = "8")]
+    pub path: ::core::option::Option<PcztDerivationPath>,
+    #[prost(bytes = "vec", repeated, tag = "9")]
+    pub signatures: ::prost::alloc::vec::Vec<::prost::alloc::vec::Vec<u8>>,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztSapling {
+    #[prost(int64, tag = "1")]
+    pub value_balance: i64,
+    #[prost(message, repeated, tag = "2")]
+    pub spends: ::prost::alloc::vec::Vec<PcztSaplingSpend>,
+    #[prost(message, repeated, tag = "3")]
+    pub outputs: ::prost::alloc::vec::Vec<PcztSaplingOutput>,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztSaplingSpend {
+    #[prost(bytes = "vec", tag = "1")]
+    pub nf: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "2")]
+    pub cv: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "3")]
+    pub rk: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "4")]
+    pub proof: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "5")]
+    pub anchor: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "6")]
+    pub alpha: ::prost::alloc::vec::Vec<u8>,
+    #[prost(message, optional, tag = "7")]
+    pub path: ::core::option::Option<PcztDerivationPath>,
+    #[prost(bytes = "vec", repeated, tag = "8")]
+    pub signatures: ::prost::alloc::vec::Vec<::prost::alloc::vec::Vec<u8>>,
+}
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct PcztSaplingOutput {
+    #[prost(bytes = "vec", tag = "1")]
+    pub cv: ::prost::alloc::vec::Vec<u8>,
+    #[prost(bytes = "vec", tag = "2")]
+    pub cmu: ::prost::alloc::vec::Vec<u8>,
+    /// (epk, enc_ciphertext, out_ciphertext)
+    #[prost(bytes = "vec", tag = "3")]
+    pub encrypted_note: ::prost::alloc::vec::Vec<u8>,
+    /// if an output has path, it is a change output
+    #[prost(message, optional, tag = "4")]
+    pub path: ::core::option::Option<PcztDerivationPath>,
+}
diff --git a/rust/pczt/src/protos/pczt.proto b/rust/pczt/src/protos/pczt.proto
index cb6914aea..ca0b48a76 100644
--- a/rust/pczt/src/protos/pczt.proto
+++ b/rust/pczt/src/protos/pczt.proto
@@ -1,5 +1,7 @@
 syntax = "proto3";
 
+package pczt;
+
 message PartiallyCreatedTransaction {
     // The version of this wire format, for storage.
     uint32 protoVersion = 1;