diff --git a/setup.py b/setup.py
index 88324ed..ffe30fc 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@
 
 setup(
     name="science-synapse",
-    version="2.2.10",
+    version="2.2.12",
     description="Client library and CLI for the Synapse API",
     author="Science Team",
     author_email="team@science.xyz",
diff --git a/synapse-api b/synapse-api
index 60bdb2f..de75a2c 160000
--- a/synapse-api
+++ b/synapse-api
@@ -1 +1 @@
-Subproject commit 60bdb2fdc8af14f19cef3b324232f1125ce33ead
+Subproject commit de75a2cb1d9159994bf9a0f2d2c601757c400b09
diff --git a/synapse/cli/offline_hdf5_plotter.py b/synapse/cli/offline_hdf5_plotter.py
index 7bba75d..a1db238 100644
--- a/synapse/cli/offline_hdf5_plotter.py
+++ b/synapse/cli/offline_hdf5_plotter.py
@@ -117,11 +117,60 @@ def load_h5_data(data_file, console, time_range=None):
         # Get frame data info
         frame_data = f["/acquisition/ElectricalSeries"]
         total_samples = len(frame_data)
-        samples_per_channel = total_samples // number_of_channels
 
-        console.print(
-            f"Total duration: {samples_per_channel / sample_rate:.2f} seconds"
-        )
+        timestamps_ns = f["/acquisition/timestamp_ns"]
+        total_duration = timestamps_ns[-1] - timestamps_ns[0]
+        console.print(f"Total duration: {total_duration / 1e9:.2f} seconds")
+
+        sequence_number = f["/acquisition/sequence_number"]
+
+        # Check for gaps in sequence numbers with progress bar
+        gaps_found = []
+
+        with Progress(console=console) as progress:
+            task = progress.add_task(
+                "Checking sequence numbers...", total=len(sequence_number)
+            )
+
+            # Convert to numpy array for faster processing
+            seq_array = sequence_number[:]
+
+            # Start with the first sequence number as the expected value
+            expected_sequence = seq_array[0]
+
+            for i in range(len(seq_array)):
+                current_seq = seq_array[i]
+                if current_seq != expected_sequence:
+                    gaps_found.append(
+                        {
+                            "index": i,
+                            "expected": expected_sequence,
+                            "actual": current_seq,
+                            "gap_size": current_seq - expected_sequence,
+                        }
+                    )
+                expected_sequence = current_seq + 1
+                progress.update(task, advance=1)
+
+        if gaps_found:
+            console.print(
+                f"[red]⚠️  Found {len(gaps_found)} gaps in sequence numbers:[/red]"
+            )
+            for gap in gaps_found:
+                console.print(
+                    f"[red]  Index {gap['index']}: Expected {gap['expected']}, got {gap['actual']} (gap of {gap['gap_size']})[/red]"
+                )
+        else:
+            console.print(
+                f"[green]✓ Sequence numbers are continuous ({seq_array[0]} to {seq_array[-1]})[/green]"
+            )
+
+        # Print first few and last few sequence numbers for reference
+        if len(seq_array) > 10:
+            console.print(f"First 5 sequence numbers: {seq_array[:5].tolist()}")
+            console.print(f"Last 5 sequence numbers: {seq_array[-5:].tolist()}")
+        else:
+            console.print(f"All sequence numbers: {seq_array[:].tolist()}")
 
         # Determine time range to load
         start_index = 0
diff --git a/synapse/cli/streaming.py b/synapse/cli/streaming.py
index d1e51ec..ad3df6d 100644
--- a/synapse/cli/streaming.py
+++ b/synapse/cli/streaming.py
@@ -161,7 +161,16 @@ def __init__(self, output_dir: str):
 
         # Create datasets with chunking and compression for better performance
         self.timestamp_dataset = self.file.create_dataset(
-            "/acquisition/timestamp",
+            "/acquisition/timestamp_ns",
+            shape=(0,),
+            maxshape=(None,),
+            dtype="uint64",
+            chunks=True,
+            compression="gzip",
+            compression_opts=1,  # Fast compression
+        )
+        self.unix_timestamp_dataset = self.file.create_dataset(
+            "/acquisition/unix_timestamp_ns",
             shape=(0,),
             maxshape=(None,),
             dtype="uint64",
@@ -354,6 +363,7 @@ def _write_buffer(self, frame_buffer: list):
             new_frame_size = current_frame_size + (num_frames * samples_per_frame)
 
             self.timestamp_dataset.resize(new_timestamp_size, axis=0)
+            self.unix_timestamp_dataset.resize(new_timestamp_size, axis=0)
             self.sequence_dataset.resize(new_timestamp_size, axis=0)
             self.frame_data_dataset.resize(new_frame_size, axis=0)
 
@@ -361,16 +371,21 @@ def _write_buffer(self, frame_buffer: list):
             timestamps = []
             sequences = []
             all_frame_data = []
+            unix_timestamps = []
 
             for frame in frame_buffer:
                 timestamps.append(frame.timestamp_ns)
                 sequences.append(frame.sequence_number)
                 all_frame_data.extend(frame.frame_data)
+                unix_timestamps.append(frame.unix_timestamp_ns)
 
             # Write all data at once (more efficient)
             self.timestamp_dataset[current_timestamp_size:new_timestamp_size] = (
                 timestamps
             )
+            self.unix_timestamp_dataset[current_timestamp_size:new_timestamp_size] = (
+                unix_timestamps
+            )
             self.sequence_dataset[current_timestamp_size:new_timestamp_size] = sequences
             self.frame_data_dataset[current_frame_size:new_frame_size] = all_frame_data