diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
new file mode 100644
index 0000000..244f826
--- /dev/null
+++ b/.github/workflows/rust.yml
@@ -0,0 +1,48 @@
+name: Rust
+
+on: 
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+env:
+  SCCACHE_GHA_ENABLED: "true"
+  RUSTC_WRAPPER: "sccache"
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@v3
+      - uses: Swatinem/rust-cache@v2
+      - name: Run sccache-cache
+        uses: mozilla-actions/sccache-action@v0.0.3
+        with: 
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Setup protoc
+        uses: arduino/setup-protoc@v1.1.2
+      - uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --all
+  lints:
+    name: fmt check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Source
+        uses: actions/checkout@v3
+      - uses: Swatinem/rust-cache@v2
+      - name: Run sccache-cache
+        uses: mozilla-actions/sccache-action@v0.0.3
+        with: 
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Setup protoc
+        uses: arduino/setup-protoc@v1.1.2
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all --check
diff --git a/Cargo.lock b/Cargo.lock
index 375648e..ac51390 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4891,6 +4891,7 @@ dependencies = [
 [[package]]
 name = "tower-batch-control"
 version = "0.2.41-beta.11"
+source = "git+https://github.com/willemolding/zebra?rev=185e404bed938e3aa916aee1ae6999a70efceddb#185e404bed938e3aa916aee1ae6999a70efceddb"
 dependencies = [
  "futures",
  "futures-core",
@@ -4924,6 +4925,7 @@ dependencies = [
 [[package]]
 name = "tower-fallback"
 version = "0.2.41-beta.11"
+source = "git+https://github.com/willemolding/zebra?rev=185e404bed938e3aa916aee1ae6999a70efceddb#185e404bed938e3aa916aee1ae6999a70efceddb"
 dependencies = [
  "futures-core",
  "pin-project",
@@ -5851,6 +5853,7 @@ dependencies = [
 [[package]]
 name = "zebra-chain"
 version = "1.0.0-beta.35"
+source = "git+https://github.com/willemolding/zebra?rev=185e404bed938e3aa916aee1ae6999a70efceddb#185e404bed938e3aa916aee1ae6999a70efceddb"
 dependencies = [
  "bitflags 2.5.0",
  "bitflags-serde-legacy",
@@ -5908,6 +5911,7 @@ dependencies = [
 [[package]]
 name = "zebra-consensus"
 version = "1.0.0-beta.35"
+source = "git+https://github.com/willemolding/zebra?rev=185e404bed938e3aa916aee1ae6999a70efceddb#185e404bed938e3aa916aee1ae6999a70efceddb"
 dependencies = [
  "bellman",
  "blake2b_simd",
@@ -5943,6 +5947,7 @@ dependencies = [
 [[package]]
 name = "zebra-node-services"
 version = "1.0.0-beta.35"
+source = "git+https://github.com/willemolding/zebra?rev=185e404bed938e3aa916aee1ae6999a70efceddb#185e404bed938e3aa916aee1ae6999a70efceddb"
 dependencies = [
  "zebra-chain",
 ]
@@ -5950,6 +5955,7 @@ dependencies = [
 [[package]]
 name = "zebra-script"
 version = "1.0.0-beta.35"
+source = "git+https://github.com/willemolding/zebra?rev=185e404bed938e3aa916aee1ae6999a70efceddb#185e404bed938e3aa916aee1ae6999a70efceddb"
 dependencies = [
  "displaydoc",
  "thiserror",
@@ -5960,6 +5966,7 @@ dependencies = [
 [[package]]
 name = "zebra-state"
 version = "1.0.0-beta.35"
+source = "git+https://github.com/willemolding/zebra?rev=185e404bed938e3aa916aee1ae6999a70efceddb#185e404bed938e3aa916aee1ae6999a70efceddb"
 dependencies = [
  "bincode",
  "chrono",
@@ -5993,6 +6000,7 @@ dependencies = [
 [[package]]
 name = "zebra-test"
 version = "1.0.0-beta.35"
+source = "git+https://github.com/willemolding/zebra?rev=185e404bed938e3aa916aee1ae6999a70efceddb#185e404bed938e3aa916aee1ae6999a70efceddb"
 dependencies = [
  "color-eyre",
  "futures",
diff --git a/Cargo.toml b/Cargo.toml
index 5ade780..7de7ad9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,15 +49,16 @@ members = [ "cartezcash-lightwalletd", "tiny-cash", "tower-cartesi"]
 [workspace.dependencies]
 
 # patched zebra crates to support TinyCash network and expose things we need
-# zebra-consensus = { git = "https://github.com/willemolding/zebra", rev = "a8d1aa146fc702878ca84f63fe5c32898ffbdfcc", default-features = false }
-# zebra-state = { git = "https://github.com/willemolding/zebra", rev = "a8d1aa146fc702878ca84f63fe5c32898ffbdfcc", default-features = false }
-# zebra-test = { git = "https://github.com/willemolding/zebra", rev = "a8d1aa146fc702878ca84f63fe5c32898ffbdfcc", default-features = false }
-# zebra-chain = { git = "https://github.com/willemolding/zebra", rev = "a8d1aa146fc702878ca84f63fe5c32898ffbdfcc", default-features = false }
+zebra-consensus = { git = "https://github.com/willemolding/zebra", rev = "185e404bed938e3aa916aee1ae6999a70efceddb", default-features = false }
+zebra-state = { git = "https://github.com/willemolding/zebra", rev = "185e404bed938e3aa916aee1ae6999a70efceddb", default-features = false }
+zebra-test = { git = "https://github.com/willemolding/zebra", rev = "185e404bed938e3aa916aee1ae6999a70efceddb", default-features = false }
+zebra-chain = { git = "https://github.com/willemolding/zebra", rev = "185e404bed938e3aa916aee1ae6999a70efceddb", default-features = false }
 
-zebra-consensus = { path = "../zebra/zebra-consensus", default-features = false }
-zebra-state = { path = "../zebra/zebra-state", default-features = false }
-zebra-test = { path = "../zebra/zebra-test", default-features = false }
-zebra-chain = { path = "../zebra/zebra-chain", default-features = false }
+# uncomment for local dev when modifying zebra
+# zebra-consensus = { path = "../zebra/zebra-consensus", default-features = false }
+# zebra-state = { path = "../zebra/zebra-state", default-features = false }
+# zebra-test = { path = "../zebra/zebra-test", default-features = false }
+# zebra-chain = { path = "../zebra/zebra-chain", default-features = false }
 
 
 [patch.crates-io]
diff --git a/cartezcash-lightwalletd/src/service_impl.rs b/cartezcash-lightwalletd/src/service_impl.rs
index 1cd39af..6755acb 100644
--- a/cartezcash-lightwalletd/src/service_impl.rs
+++ b/cartezcash-lightwalletd/src/service_impl.rs
@@ -14,11 +14,11 @@ use crate::proto::compact_formats::*;
 use crate::proto::service::compact_tx_streamer_server::CompactTxStreamer;
 use crate::proto::service::*;
 
+use ethers::middleware::SignerMiddleware;
 use ethers::prelude::abigen;
 use ethers::providers::{Http, Provider};
 use ethers::signers::{LocalWallet, Signer};
 use ethers::types::{Address, Bytes};
-use ethers::middleware::SignerMiddleware;
 
 abigen!(
     IInputBox,
@@ -57,13 +57,15 @@ where
     ) -> std::result::Result<tonic::Response<SendResponse>, tonic::Status> {
         tracing::info!("send_transaction called. Fowarding to InputBox contract");
 
-        let provider =
-            Provider::<Http>::try_from("http://127.0.0.1:8545").unwrap();
+        let provider = Provider::<Http>::try_from("http://127.0.0.1:8545").unwrap();
         let wallet: LocalWallet =
             "ac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"
                 .parse()
                 .unwrap();
-        let client = std::sync::Arc::new(SignerMiddleware::new(provider, wallet.with_chain_id(31337_u64)));
+        let client = std::sync::Arc::new(SignerMiddleware::new(
+            provider,
+            wallet.with_chain_id(31337_u64),
+        ));
 
         // Instantiate the contract
         let contract = IInputBox::new(
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..624eb0e
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "1.76.0"
diff --git a/src/main.rs b/src/main.rs
index 0de4645..7f47d78 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -43,7 +43,12 @@ async fn main() -> Result<(), anyhow::Error> {
 
     let network = Network::Mainnet;
 
-    println!("Withdraw address is: {}", UnifiedAddress::from_receivers(Some(tiny_cash::mt_doom_address()), None).unwrap().encode(&MAIN_NETWORK));
+    println!(
+        "Withdraw address is: {}",
+        UnifiedAddress::from_receivers(Some(tiny_cash::mt_doom_address()), None)
+            .unwrap()
+            .encode(&MAIN_NETWORK)
+    );
 
     // TODO: Enable this when not debugging
     // tracing::info!("Initializing Halo2 verifier key");
@@ -59,8 +64,7 @@ async fn main() -> Result<(), anyhow::Error> {
     let state_service = Buffer::new(state_service, 30);
     let state_read_service = Buffer::new(state_read_service.boxed(), 30);
 
-    let mut cartezcash_app =
-        CarteZcashApp::new(network, state_service).await;
+    let mut cartezcash_app = CarteZcashApp::new(network, state_service).await;
 
     let svc = CompactTxStreamerServer::new(CompactTxStreamerImpl { state_read_service });
     let addr = grpc_addr.parse()?;
@@ -79,14 +83,12 @@ async fn main() -> Result<(), anyhow::Error> {
 }
 
 struct CarteZcashApp {
-    cartezcash: Buffer<BoxService<Request, service::Response, Box<dyn Error + Sync + Send>>, Request>,
+    cartezcash:
+        Buffer<BoxService<Request, service::Response, Box<dyn Error + Sync + Send>>, Request>,
 }
 
 impl CarteZcashApp {
-    pub async fn new(
-        network: Network,
-        state_service: StateService,
-    ) -> Self {
+    pub async fn new(network: Network, state_service: StateService) -> Self {
         // set up the services needed to run the rollup
         let verifier_service = tx::Verifier::new(network, state_service.clone());
         let mut tinycash = Buffer::new(
@@ -100,10 +102,7 @@ impl CarteZcashApp {
         initialize_network(&mut tinycash).await.unwrap();
 
         Self {
-            cartezcash: Buffer::new(
-                BoxService::new(CarteZcashService::new(tinycash)),
-                10,
-            ),
+            cartezcash: Buffer::new(BoxService::new(CarteZcashService::new(tinycash)), 10),
         }
     }
 }
diff --git a/src/service/mod.rs b/src/service/mod.rs
index e0a9449..ed6bb86 100644
--- a/src/service/mod.rs
+++ b/src/service/mod.rs
@@ -2,7 +2,6 @@ use futures_util::future::FutureExt;
 use std::future::Future;
 use std::pin::Pin;
 use tower::{BoxError, Service, ServiceExt};
-use zebra_chain::amount::{Amount, NonNegative};
 
 pub use request::Request;
 
diff --git a/src/service/request.rs b/src/service/request.rs
index 9c54202..6392efd 100644
--- a/src/service/request.rs
+++ b/src/service/request.rs
@@ -66,16 +66,12 @@ impl TryFrom<(tower_cartesi::AdvanceStateMetadata, Vec<u8>)> for Request {
                     transaction bytes // arbitrary size
                  */
 
-                let txn = zebra_chain::transaction::Transaction::zcash_deserialize(payload.as_slice())?;
+                let txn =
+                    zebra_chain::transaction::Transaction::zcash_deserialize(payload.as_slice())?;
 
-                tracing::info!(
-                    "Received transaction request {}",
-                    txn.hash()
-                );
+                tracing::info!("Received transaction request {}", txn.hash());
 
-                Ok(Request::Transact {
-                    txn,
-                })
+                Ok(Request::Transact { txn })
             }
             _ => anyhow::bail!("unrecognised sender {}", metadata.msg_sender.to_string()),
         }
@@ -88,14 +84,8 @@ impl std::fmt::Debug for Request {
             Request::Deposit { amount, to } => {
                 write!(f, "Deposit {} to {}", amount, to)
             }
-            Request::Transact {
-                txn,
-            } => {
-                write!(
-                    f,
-                    "Transact hash {}",
-                    txn.hash(),
-                )
+            Request::Transact { txn } => {
+                write!(f, "Transact hash {}", txn.hash(),)
             }
         }
     }
diff --git a/tiny-cash/src/write.rs b/tiny-cash/src/write.rs
index 89e35a8..2ef8b7c 100644
--- a/tiny-cash/src/write.rs
+++ b/tiny-cash/src/write.rs
@@ -8,7 +8,6 @@ use std::{
 };
 use tower::{Service, ServiceExt};
 
-use zebra_chain::{transaction::{Memo, Transaction}, transparent::Script};
 use zebra_chain::transparent;
 use zebra_chain::{
     amount::{Amount, NonNegative},
@@ -18,6 +17,10 @@ use zebra_chain::{
     work::{difficulty::CompactDifficulty, equihash::Solution},
 };
 use zebra_chain::{block, serialization::ZcashDeserialize};
+use zebra_chain::{
+    transaction::{Memo, Transaction},
+    transparent::Script,
+};
 use zebra_consensus::transaction as tx;
 
 use crate::extract_burn_info;
@@ -253,9 +256,5 @@ fn mint_coinbase_txn(
 }
 
 fn empty_coinbase_txn(height: Height) -> Transaction {
-    mint_coinbase_txn(
-        Amount::zero(),
-        &Script::new(&[0x0; 32]),
-        height,
-    )
+    mint_coinbase_txn(Amount::zero(), &Script::new(&[0x0; 32]), height)
 }
diff --git a/tower-cartesi/examples/echo.rs b/tower-cartesi/examples/echo.rs
index 9872243..0eedafa 100644
--- a/tower-cartesi/examples/echo.rs
+++ b/tower-cartesi/examples/echo.rs
@@ -1,12 +1,12 @@
+use futures_util::FutureExt;
 use std::env;
-use std::future::Future;
 use std::error::Error;
+use std::future::Future;
 use std::pin::Pin;
-use std::task::{Poll, Context};
-use futures_util::FutureExt;
+use std::task::{Context, Poll};
 
-use tower_service::Service;
 use tower_cartesi::{listen_http, Request, Response};
+use tower_service::Service;
 
 type BoxError = Box<dyn Error + Send + Sync>;
 
@@ -35,24 +35,22 @@ impl Service<Request> for EchoApp {
     type Error = Box<dyn Error + Send + Sync>;
     type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>> + Send>>;
 
-    fn poll_ready(
-        &mut self,
-        _cx: &mut Context<'_>,
-    ) -> Poll<Result<(), Self::Error>> {
+    fn poll_ready(&mut self, _cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
         Poll::Ready(Ok(()))
     }
 
     fn call(&mut self, req: Request) -> Self::Future {
         match req {
             Request::AdvanceState { metadata, payload } => {
-                println!("Received advance state request {:?} \npayload {:?}:", metadata, payload);
+                println!(
+                    "Received advance state request {:?} \npayload {:?}:",
+                    metadata, payload
+                );
             }
             Request::InspectState { payload } => {
                 println!("Received inspect state request {:?}", payload);
             }
         }
-        async {
-            Ok(tower_cartesi::Response::empty_accept())
-        }.boxed()
+        async { Ok(tower_cartesi::Response::empty_accept()) }.boxed()
     }
 }
diff --git a/tower-cartesi/src/response.rs b/tower-cartesi/src/response.rs
index 165f9b6..bb8f57c 100644
--- a/tower-cartesi/src/response.rs
+++ b/tower-cartesi/src/response.rs
@@ -17,7 +17,10 @@ impl Response {
     }
 
     pub fn add_voucher(&mut self, destination: ethereum_types::Address, payload: &[u8]) {
-        self.outputs.push(Output::Voucher{destination, payload: payload.to_vec() });
+        self.outputs.push(Output::Voucher {
+            destination,
+            payload: payload.to_vec(),
+        });
     }
 
     pub fn finish_message(&self) -> Finish {