Mining dashboard still runs fine if Bitcoin Core becomes unavailable

backend/src/repositories/BlocksRepository.ts

@@ -121,6 +121,19 @@ class BlocksRepository {
     }
   }
 
+  /**
+   * Return most recent block height
+   */
+  public async $mostRecentBlockHeight(): Promise<number> {
+    try {
+      const [row] = await DB.query('SELECT MAX(height) as maxHeight from blocks');
+      return row[0]['maxHeight'];
+    } catch (e) {
+      logger.err(`Cannot count blocks for this pool (using offset). Reason: ` + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+
   /**
    * Get blocks count for a period
    */