diff --git a/src/bin/historic_events_processor.rs b/src/bin/historic_events_processor.rs
index ce776faa1..66d498a35 100644
--- a/src/bin/historic_events_processor.rs
+++ b/src/bin/historic_events_processor.rs
@@ -101,6 +101,7 @@ fn main() -> Result<(), anyhow::Error> {
 
     let mut hours_since_0 = 0;
     let mut event_batch = vec![];
+    let mut offset = std::fs::read_to_string("last_offset").map(|s| s.trim().parse::<usize>().unwrap()).unwrap_or(0);
     for result in iter {
         let (number, block) = result.context("failed to read block")?;
         let block = block.into_inner();
@@ -124,13 +125,24 @@ fn main() -> Result<(), anyhow::Error> {
 
             hours_since_0 = timestamp.0 / 3600;
             if !event_batch.is_empty() {
-                let folder_path = format!("events/{}/{:02}/{:02}", date.year(), date.month(), date.day());
+                let folder_path = format!(
+                    "events/ledger_wallet_events/year={}/month={:02}/day={:02}/hour={:02}",
+                    date.year(),
+                    date.month(),
+                    date.day(),
+                    date.hour()
+                );
                 if !std::path::Path::new(&folder_path).exists() {
                     std::fs::create_dir_all(&folder_path)?;
                 }
-                std::fs::write(format!("{}/{:02}", folder_path, date.hour()), event_batch.join("\n"))?;
+                std::fs::write(
+                    format!("{}/ledger_wallet_events+backfill+{:010}.json", folder_path, offset),
+                    event_batch.join("\n"),
+                )?;
+                offset += event_batch.len();
             }
             std::fs::write("last_processed_block", number.to_string())?;
+            std::fs::write("last_offset", offset.to_string())?;
             event_batch.clear();
         }
     }