diff --git a/shared/inc/sql.hpp b/shared/inc/sql.hpp
index a2449f9..404b94d 100644
--- a/shared/inc/sql.hpp
+++ b/shared/inc/sql.hpp
@@ -47,10 +47,13 @@ namespace sql
   int exec(sqlite3 *db, const char *sql, int (*callback)(void *, int, char **, char **), void *first_arg, char **errmsg);
   int prepare_v2(sqlite3 *db, const char *zSql, int nByte, sqlite3_stmt **pStmt, const char **pzTail);
   int bind_int64(sqlite3_stmt *pStmt, int column, int64_t value);
+  int bind_blob(sqlite3_stmt*pStmt, int column, const void* data, int size);
   int step(sqlite3_stmt *pStmt);
   int column_count(sqlite3_stmt *pStmt);
   int column_type(sqlite3_stmt *pStmt, int column);
   int64_t column_int64(sqlite3_stmt *pStmt, int column);
+  const void* column_blob(sqlite3_stmt *pStmt, int column);
+  int64_t column_bytes(sqlite3_stmt* pStmt, int column);
   int finalize(sqlite3_stmt *pStmt);
   int reset(sqlite3_stmt *pStmt);
   int close(sqlite3 *db);
diff --git a/shared/inc/values/DnaDB.hpp b/shared/inc/values/DnaDB.hpp
index f05f6a3..6206489 100644
--- a/shared/inc/values/DnaDB.hpp
+++ b/shared/inc/values/DnaDB.hpp
@@ -10,6 +10,7 @@ class DnaDB
 public:
   void init(const char *db_name = "data.db");
   void deinit();
+  
   std::vector<int64_t> getUserIds();
   int insertUser(int64_t id, int64_t max_gen);
   int updateUser(int64_t id, int64_t max_gen);
diff --git a/shared/src/sql.cpp b/shared/src/sql.cpp
index efed439..97eb677 100644
--- a/shared/src/sql.cpp
+++ b/shared/src/sql.cpp
@@ -90,6 +90,10 @@ namespace sql
   {
     return sqlite3_bind_int64(pStmt, column, value);
   }
+  int bind_blob(sqlite3_stmt *pStmt, int column, const void *data, int size)
+  {
+    return sqlite3_bind_blob(pStmt, column, data, size, SQLITE_STATIC);
+  }
   int step(sqlite3_stmt *pStmt)
   {
     return sqlite3_step(pStmt);
@@ -106,6 +110,14 @@ namespace sql
   {
     return sqlite3_column_int64(pStmt, column);
   }
+  const void *column_blob(sqlite3_stmt *pStmt, int column)
+  {
+    return sqlite3_column_blob(pStmt, column);
+  }
+  int64_t column_bytes(sqlite3_stmt *pStmt, int column)
+  {
+    return sqlite3_column_bytes(pStmt, column);
+  }
   int finalize(sqlite3_stmt *pStmt)
   {
     return sqlite3_finalize(pStmt);