diff --git a/testing/jormungandr-integration-tests/src/jormungandr/bft/block.rs b/testing/jormungandr-integration-tests/src/jormungandr/bft/block.rs
new file mode 100644
index 0000000000..e615fae70f
--- /dev/null
+++ b/testing/jormungandr-integration-tests/src/jormungandr/bft/block.rs
@@ -0,0 +1,53 @@
+use assert_fs::TempDir;
+use chain_impl_mockchain::chaintypes::ConsensusType;
+use jormungandr_lib::interfaces::SlotDuration;
+use jormungandr_testing_utils::testing::{
+    adversary::process::AdversaryNodeBuilder,
+    jormungandr::{ConfigurationBuilder, Starter, StartupVerificationMode},
+    network::LeadershipMode,
+    node::grpc::server::ProtocolVersion,
+    Block0ConfigurationBuilder, FragmentNode,
+};
+use std::time::Duration;
+
+#[test]
+fn block0_with_incorrect_hash() {
+    let block0 = Block0ConfigurationBuilder::new()
+        .with_slot_duration(SlotDuration::new(10).unwrap())
+        .with_block0_consensus(ConsensusType::Bft)
+        .build()
+        .to_block();
+
+    let adversary = AdversaryNodeBuilder::new(block0.clone())
+        .with_protocol_version(ProtocolVersion::Bft)
+        .with_server_enabled()
+        .build();
+
+    assert!(adversary
+        .node_data
+        .read()
+        .unwrap()
+        .get_block(block0.header().id())
+        .is_ok());
+
+    println!("ADVERSARY ADDR:{}", adversary.address());
+    println!("BLOCK0 HASH:   {}", adversary.genesis_block_hash());
+
+    let passive_temp_dir = TempDir::new().unwrap();
+
+    let passive_params = ConfigurationBuilder::default()
+        .with_block0_consensus(ConsensusType::Bft)
+        .with_trusted_peers(vec![adversary.to_trusted_peer()])
+        .with_block_hash(format!("{}", adversary.genesis_block_hash()))
+        .build(&passive_temp_dir);
+
+    let passive = Starter::default()
+        .config(passive_params)
+        .leadership_mode(LeadershipMode::Passive)
+        .start()
+        .unwrap();
+
+    for log in passive.log_content() {
+        println!("{}", log);
+    }
+}
diff --git a/testing/jormungandr-integration-tests/src/jormungandr/bft/mod.rs b/testing/jormungandr-integration-tests/src/jormungandr/bft/mod.rs
index 00d8d257e8..45047b4071 100644
--- a/testing/jormungandr-integration-tests/src/jormungandr/bft/mod.rs
+++ b/testing/jormungandr-integration-tests/src/jormungandr/bft/mod.rs
@@ -1,2 +1,3 @@
-pub mod mempool;
-pub mod start_node;
+mod block;
+mod mempool;
+mod start_node;
diff --git a/testing/jormungandr-testing-utils/src/testing/adversary/process.rs b/testing/jormungandr-testing-utils/src/testing/adversary/process.rs
index 898dcc3da3..fa68b6cb42 100644
--- a/testing/jormungandr-testing-utils/src/testing/adversary/process.rs
+++ b/testing/jormungandr-testing-utils/src/testing/adversary/process.rs
@@ -35,7 +35,7 @@ use std::sync::{Arc, RwLock};
 pub struct AdversaryNode {
     temp_dir: Option<TempDir>,
     alias: String,
-    node_data: Arc<RwLock<NodeData>>,
+    pub node_data: Arc<RwLock<NodeData>>,
     server: Option<MockController>,
     open_client_connections: HashMap<SocketAddr, JormungandrClient>,
 }
diff --git a/testing/jormungandr-testing-utils/src/testing/node/grpc/server/mod.rs b/testing/jormungandr-testing-utils/src/testing/node/grpc/server/mod.rs
index 25bef1374f..ad85f0f5c6 100644
--- a/testing/jormungandr-testing-utils/src/testing/node/grpc/server/mod.rs
+++ b/testing/jormungandr-testing-utils/src/testing/node/grpc/server/mod.rs
@@ -8,6 +8,11 @@ pub use super::proto::{
     },
 };
 
+use chain_core::{
+    mempack::{ReadBuf, Readable},
+    property::Serialize,
+};
+use chain_impl_mockchain::key::Hash;
 use std::sync::RwLock;
 use tokio::sync::mpsc;
 use tokio_stream::wrappers::ReceiverStream;
@@ -150,13 +155,41 @@ impl Node for JormungandrServerImpl {
     }
     async fn get_blocks(
         &self,
-        _request: tonic::Request<BlockIds>,
+        request: tonic::Request<BlockIds>,
     ) -> Result<tonic::Response<Self::GetBlocksStream>, tonic::Status> {
         info!(
             method = %MethodType::GetBlocks,
             "Get blocks request received"
         );
-        let (_tx, rx) = mpsc::channel(1);
+
+        let block_ids = request.into_inner();
+
+        let mut blocks = vec![];
+
+        for block_id in block_ids.ids.iter() {
+            let block_hash = Hash::read(&mut ReadBuf::from(block_id.as_ref())).unwrap();
+
+            blocks.push(
+                self.data
+                    .read()
+                    .unwrap()
+                    .get_block(block_hash)
+                    .map_err(|_| tonic::Status::not_found(format!("{} not available", block_hash))),
+            );
+        }
+
+        let (tx, rx) = mpsc::channel(blocks.len());
+
+        for block in blocks {
+            tx.send(block.map(|b| {
+                let mut bytes = vec![];
+                b.serialize(&mut bytes).unwrap();
+                Block { content: bytes }
+            }))
+            .await
+            .unwrap();
+        }
+
         Ok(Response::new(ReceiverStream::new(rx)))
     }
     async fn get_headers(