diff --git a/proxy_docker/app/script/ots.sh b/proxy_docker/app/script/ots.sh
index 807cb5d..52991e4 100644
--- a/proxy_docker/app/script/ots.sh
+++ b/proxy_docker/app/script/ots.sh
@@ -16,14 +16,23 @@ serve_ots_stamp()
   local result
   local returncode
   local errorstring
+  local id_inserted
+  local requested
+  local row
 
   # Already requested?
-  local requested
-  requested=$(sql "SELECT requested FROM stamp WHERE hash='${hash}'")
-  if [ -n "${requested}" ]; then
+  row=$(sql "SELECT id, requested FROM stamp WHERE hash='${hash}'")
+  trace "[serve_ots_stamp] row=${row}"
+
+  if [ -n "${row}" ]; then
     # Hash exists in DB...
     trace "[serve_ots_stamp] Hash already exists in DB."
 
+    requested=$(echo "${row}" | cut -d '|' -f2)
+    trace "[serve_ots_stamp] requested=${requested}"
+    id_inserted=$(echo "${row}" | cut -d '|' -f1)
+    trace "[serve_ots_stamp] id_inserted=${id_inserted}"
+
     if [ "${requested}" -eq "1" ]; then
       # Stamp already requested
       trace "[serve_ots_stamp] Stamp already requested"
@@ -38,6 +47,8 @@ serve_ots_stamp()
     returncode=$?
     trace_rc ${returncode}
     if [ "${returncode}" -eq "0" ]; then
+      id_inserted=$(sql "SELECT id FROM stamp WHERE hash='${hash}'")
+      trace_rc $?
       errorstring=$(request_ots_stamp "${hash}")
       returncode=$?
       trace_rc ${returncode}
@@ -48,10 +59,12 @@ serve_ots_stamp()
     fi
   fi
 
+  result="{\"method\":\"ots_stamp\",\"hash\":\"${hash}\",\"id\":\"${id_inserted}\",\"result\":\""
+
   if [ "${returncode}" -eq "0" ]; then
-    result="{\"method\":\"ots_stamp\",\"hash\":\"${hash}\",\"result\":\"success\""
+    result="${result}success\"}"
   else
-    result="{\"method\":\"ots_stamp\",\"hash\":\"${hash}\",\"result\":\"error\",\"error\":\"${errorstring}\""
+    result="${result}error\",\"error\":\"${errorstring}\"}"
   fi
 
   trace "[serve_ots_stamp] result=${result}"
diff --git a/proxy_docker/app/script/responsetoclient.sh b/proxy_docker/app/script/responsetoclient.sh
index 28121e5..193d0c7 100644
--- a/proxy_docker/app/script/responsetoclient.sh
+++ b/proxy_docker/app/script/responsetoclient.sh
@@ -27,14 +27,20 @@ file_response_to_client()
   local pathfile="${path}${filename}"
   local returncode
 
+  trace "[file_response_to_client] path=${path}"
+  trace "[file_response_to_client] filename=${filename}"
+  trace "[file_response_to_client] pathfile=${pathfile}"
+  local file_length=$(stat -c'%s' ${pathfile})
+  trace "[file_response_to_client] file_length=${file_length}"
+
   [ -r "${pathfile}" ] \
-  && echo -ne "HTTP/1.1 200 OK\r\nContent-Disposition: inline; filename=\"${filename}\"\r\nContent-Length: $(stat -c'%s' ${pathfile})\r\n\r\n" \
+  && echo -ne "HTTP/1.1 200 OK\r\nContent-Type: application/octet-stream\r\nContent-Disposition: inline; filename=\"${filename}\"\r\nContent-Length: ${file_length}\r\n\r\n" \
   && cat ${pathfile}
 
   [ ! -r "${pathfile}" ] && echo -ne "HTTP/1.1 404 Not Found\r\n"
 
   # Small delay needed for the data to be processed correctly by peer
-  sleep 0.2s
+  sleep 0.5s
 }
 
 case "${0}" in *responsetoclient.sh) response_to_client $@;; esac