Add data zoom to difficulty

backend/src/repositories/BlocksRepository.ts

@@ -274,7 +274,7 @@ class BlocksRepository {
     }
 
     query += ` GROUP BY difficulty
-      ORDER BY blockTimestamp DESC`;
+      ORDER BY blockTimestamp`;
 
     const [rows]: any[] = await connection.query(query);
     connection.release();

backend/src/repositories/HashratesRepository.ts

@@ -41,7 +41,7 @@ class HashratesRepository {
       query += ` WHERE hashrate_timestamp BETWEEN DATE_SUB(NOW(), INTERVAL ${interval}) AND NOW()`;
     }
 
-    query += ` ORDER by hashrate_timestamp DESC`;
+    query += ` ORDER by hashrate_timestamp`;
 
     const [rows]: any[] = await connection.query(query);
     connection.release();