diff --git a/rust/pczt/Cargo.lock b/rust/pczt/Cargo.lock
new file mode 100644
index 000000000..311f51241
--- /dev/null
+++ b/rust/pczt/Cargo.lock
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diff --git a/rust/pczt/Cargo.toml b/rust/pczt/Cargo.toml
new file mode 100644
index 000000000..ee82114ba
--- /dev/null
+++ b/rust/pczt/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "pczt"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+prost = { version = "0.13", default-features = false }
+prost-types = {version = "0.13", default-features = false}
+
+[build-dependencies]
+prost-build = "0.13"
+
diff --git a/rust/pczt/src/lib.rs b/rust/pczt/src/lib.rs
new file mode 100644
index 000000000..7d12d9af8
--- /dev/null
+++ b/rust/pczt/src/lib.rs
@@ -0,0 +1,14 @@
+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}
diff --git a/rust/pczt/src/protos/pczt.proto b/rust/pczt/src/protos/pczt.proto
new file mode 100644
index 000000000..cb6914aea
--- /dev/null
+++ b/rust/pczt/src/protos/pczt.proto
@@ -0,0 +1,121 @@
+syntax = "proto3";
+
+message PartiallyCreatedTransaction {
+    // The version of this wire format, for storage.
+    uint32 protoVersion = 1;
+    PcztGlobal global = 2;
+    optional PcztTransparent transparent = 3;
+    optional PcztSapling sapling = 4;
+    optional PcztOrchard orchard = 5;
+}
+
+message PcztGlobal {
+    uint32 txVersion = 1;
+    
+    //is versionGroupId still needed?
+    fixed32 versionGroupId = 2;
+    
+    uint32 lockTime = 3;
+    uint32 expiryHeight = 4;
+    uint32 consensusBranchId = 5;
+    uint32 networkId = 6;
+}
+
+message PcztTransparent {
+    repeated PcztTransparentInput inputs = 1;
+    repeated PcztTransparentOutput outputs = 2;
+}
+
+message PcztTransparentInput{
+    bytes pubkey = 1;
+    PcztTransparentCoin previousCoin = 2;
+    PcztTransparentOutpoint previousOutpoint = 3;
+    PcztDerivationPath path = 4;
+    repeated bytes signatures = 5;
+}
+
+message PcztTransparentCoin {
+    uint64 value = 1;
+    bytes scriptPubkey = 2;
+}
+
+message PcztTransparentOutput{
+    PcztTransparentCoin coin = 1;
+    
+    // if an output has path, it is a change output
+    optional PcztDerivationPath path = 2;
+}
+
+message PcztTransparentOutpoint {
+    bytes txHash = 1;
+    uint32 index = 2;
+}
+
+message PcztDerivationPath {
+    // the 32 bytes seed fingerprint;
+    bytes seedFingerprint = 1;
+    
+    // for orchard it should be pk_d(DiversifiedTransmissionKey)
+    // hardware wallet should check this with the derived key from it self.
+    bytes pubkey = 2;
+    
+    repeated PathComponent pathComponents = 3;
+}
+
+message PathComponent {
+    uint32 value = 1;
+    bool harden = 2;
+}
+
+message PcztOrchard {
+    uint32 flag = 1;
+    int64 valueBalance = 2;
+    bytes anchor = 3;
+    repeated PcztOrchardAction actions = 4;
+}
+
+message PcztOrchardAction {
+    bytes nf = 1;
+    bytes rk = 2;
+    bytes cmx = 3;
+    //(epk, enc_ciphertext, out_ciphertext)
+    bytes encryptedNote = 4;
+    bytes cv_net = 5;
+
+    bytes alpha = 6;
+    
+    //the serilized spend note(rho, rseed, value, receipent) of this action, to verify the nf and cmx in this action.
+    bytes spend_note = 7;
+    PcztDerivationPath path = 8;
+    repeated bytes signatures = 9;
+}
+
+message PcztSapling {
+    int64 valueBalance = 1;
+    repeated PcztSaplingSpend spends = 2;
+    repeated PcztSaplingOutput outputs = 3;
+}
+
+message PcztSaplingSpend {
+    bytes nf = 1;
+    bytes cv = 2;
+    bytes rk = 3;
+    bytes proof = 4;
+
+    bytes anchor = 5;
+
+    bytes alpha = 6;
+
+    PcztDerivationPath path = 7;
+    repeated bytes signatures = 8;
+}
+
+message PcztSaplingOutput {
+    bytes cv = 1;
+    bytes cmu = 2;
+    //(epk, enc_ciphertext, out_ciphertext)
+    bytes encryptedNote = 3;
+
+    // if an output has path, it is a change output
+    optional PcztDerivationPath path = 4;
+}
diff --git a/rust/third_party/Cargo.lock b/rust/third_party/Cargo.lock
index 41b7d9ea4..aa6d49a3a 100644
--- a/rust/third_party/Cargo.lock
+++ b/rust/third_party/Cargo.lock
@@ -685,9 +685,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.56"
+version = "1.0.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
+checksum = "b3e4daa0dcf6feba26f985457cdf104d4b4256fc5a09547140f3631bb076b19a"
 dependencies = [
  "unicode-ident",
 ]
@@ -1094,7 +1094,7 @@ dependencies = [
 [[package]]
 name = "ur-parse-lib"
 version = "0.2.0"
-source = "git+https://git@github.com/KeystoneHQ/keystone-sdk-rust.git?tag=0.0.36-alpha0#2996f57ad2fce0132cfc0258a3981749d1bf9969"
+source = "git+https://git@github.com/KeystoneHQ/keystone-sdk-rust.git?tag=zcash-alpha.0#2996f57ad2fce0132cfc0258a3981749d1bf9969"
 dependencies = [
  "hex",
  "ur",
@@ -1104,7 +1104,7 @@ dependencies = [
 [[package]]
 name = "ur-registry"
 version = "0.1.0"
-source = "git+https://git@github.com/KeystoneHQ/keystone-sdk-rust.git?tag=0.0.36-alpha0#2996f57ad2fce0132cfc0258a3981749d1bf9969"
+source = "git+https://git@github.com/KeystoneHQ/keystone-sdk-rust.git?tag=zcash-alpha.0#2996f57ad2fce0132cfc0258a3981749d1bf9969"
 dependencies = [
  "bs58",
  "core2",
diff --git a/rust/third_party/Cargo.toml b/rust/third_party/Cargo.toml
index 279aa9720..477a03fcf 100644
--- a/rust/third_party/Cargo.toml
+++ b/rust/third_party/Cargo.toml
@@ -20,8 +20,8 @@ rsa = { version = "0.8.2", default-features = false }
 sha1 = { version = "0.10.5", default-features = false }
 cty = "0.2.2"
 cstr_core = "0.2.6"
-ur-registry = { git = "https://git@github.com/KeystoneHQ/keystone-sdk-rust.git", tag = "0.0.36-alpha0" }
-ur-parse-lib = { git = "https://git@github.com/KeystoneHQ/keystone-sdk-rust.git", tag = "0.0.36-alpha0" }
+ur-registry = { git = "https://git@github.com/KeystoneHQ/keystone-sdk-rust.git", tag = "zcash-alpha.0" }
+ur-parse-lib = { git = "https://git@github.com/KeystoneHQ/keystone-sdk-rust.git", tag = "zcash-alpha.0" }
 ed25519-bip32-core = { version = "0.1.1", default-features = false }
 cryptoxide = "0.4"
 itertools = { version = "0.10.5", default-features = false, features = [