diff --git a/src/contexts/UrlContextProvider.tsx b/src/contexts/UrlContextProvider.tsx
index 5b4b3cd2..f7862382 100644
--- a/src/contexts/UrlContextProvider.tsx
+++ b/src/contexts/UrlContextProvider.tsx
@@ -209,7 +209,9 @@ const getWindowUrlHashParams = () => {
         const hashParam = hashParams.get(hashParamName);
         if (null !== hashParam) {
             const parsed = Number(hashParam);
-            urlHashParams[HASH_PARAM_NAMES.LOG_EVENT_NUM] = Number.isNaN(parsed) ?
+
+            // FIXME: hashParamName type
+            urlHashParams[hashParamName] = Number.isNaN(parsed) ?
                 null :
                 parsed;
         }
diff --git a/src/services/decoders/JsonlDecoder/index.ts b/src/services/decoders/JsonlDecoder/index.ts
index 5ea0f626..a1baa1bd 100644
--- a/src/services/decoders/JsonlDecoder/index.ts
+++ b/src/services/decoders/JsonlDecoder/index.ts
@@ -131,7 +131,9 @@ class JsonlDecoder implements Decoder {
             const mid = Math.floor((low + high) / 2);
             const midTimestamp = BigInt(this.#logEvents[mid].timestamp.valueOf());
 
-            if (midTimestamp === timestamp) {
+            console.log(`midTimestamp: ${midTimestamp}, mid: ${mid}, low: ${low}, high: ${high}`);
+            if (midTimestamp == timestamp) {
+                console.error(`result recorded: ${mid}`);
                 result = mid;
                 low = mid + 1;
             } else if (midTimestamp < timestamp) {
diff --git a/src/typings/worker.ts b/src/typings/worker.ts
index 2ccbe1a5..b33da6b0 100644
--- a/src/typings/worker.ts
+++ b/src/typings/worker.ts
@@ -40,7 +40,7 @@ enum CURSOR_CODE {
 type CursorArgMap = {
     [CURSOR_CODE.LAST_EVENT]: null;
     [CURSOR_CODE.EVENT_NUM]: { eventNum: number };
-    [CURSOR_CODE.TIMESTAMP]: { timestamp: number };
+    [CURSOR_CODE.TIMESTAMP]: { timestamp: bigint };
     [CURSOR_CODE.PAGE_NUM]: { pageNum: number, eventPositionOnPage: EVENT_POSITION_ON_PAGE };
 };