diff --git a/.github/workflows/ddc-tcc.yml b/.github/workflows/ddc-tcc.yml
index f8247ea..8c80637 100644
--- a/.github/workflows/ddc-tcc.yml
+++ b/.github/workflows/ddc-tcc.yml
@@ -29,7 +29,13 @@ jobs:
       - name: Setup tcc
         run: ./.github/workflows/scripts/setup.sh $( [[ "${{ inputs.compromise-tcc }}" == 'true' ]] && echo "-c" )
       - name: Perform DDC
-        run: ./.github/workflows/scripts/ddc.sh
+        run: ./.github/workflows/scripts/ddc.sh -e ${{ matrix.os }}
+      - name: Upload hashes
+        id: upload_hashes  
+        uses: actions/upload-artifact@v4
+        with:
+          name: hashes
+          path: /tmp/${{ matrix.os }}.txt
       - name: Create tar
         if: ${{ github.event.inputs.upload-results == 'true' }}
         run: tar -czf ./build-${{matrix.os}}.tar.gz ./build
@@ -39,4 +45,17 @@ jobs:
         with:
           if-no-files-found: error
           path: ./build-${{matrix.os}}.tar.gz
-          name: build-${{matrix.os}}.tar.gz
\ No newline at end of file
+          name: build-${{matrix.os}}.tar.gz
+  
+  summary:
+    runs-on: ubuntu-latest
+    needs: [DDC]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Fetch hashes
+        uses: actions/download-artifact@v4
+        with:
+          name: hashes
+          path: hashes
+      - run: |
+          cat hashes/*
\ No newline at end of file
diff --git a/.github/workflows/scripts/ddc.sh b/.github/workflows/scripts/ddc.sh
index 89ccd44..c8b98ec 100755
--- a/.github/workflows/scripts/ddc.sh
+++ b/.github/workflows/scripts/ddc.sh
@@ -8,16 +8,20 @@ build_dir=$(realpath "./build")
 
 # default config
 untrusted_cc="tcc"
+ddc_env="none"
 untrusted_src_dir="tinycc-f6385c0"
 trusted_cc="gcc"
 extra_flags="-s -fno-stack-protector"
 
-OPTSTRING="cst"
+OPTSTRING="cste:"
 while getopts ${OPTSTRING} opt; do
   case ${opt} in
     c)
       untrusted_cc=${OPTARG}
       ;;
+    e)
+      ddc_env=${OPTARG}
+      ;;
     s)
       untrusted_src_dir=${OPTARG}
       ;;
@@ -64,9 +68,13 @@ ln -sfT ${build_dir}/stage1-tcc${prefix} ./tcc-root
 make
 objcopy -D libtcc.a
 make install DESTDIR=${build_dir}/stage2-tcc
-echo "___________BINARIES___________"
-sha256sum ${build_dir}/cp-tcc${prefix}/bin/tcc ${build_dir}/ca-tcc${prefix}/bin/tcc ${build_dir}/stage2-tcc${prefix}/bin/tcc 
-echo "___________LIBTCC___________"
-sha256sum ${build_dir}/cp-tcc${prefix}/lib/libtcc.a ${build_dir}/ca-tcc${prefix}/lib/libtcc.a ${build_dir}/stage2-tcc${prefix}/lib/libtcc.a
-echo "___________LIBTCC1___________"
-sha256sum ${build_dir}/cp-tcc${prefix}/lib/tcc/libtcc1.a ${build_dir}/ca-tcc${prefix}/lib/tcc/libtcc1.a ${build_dir}/stage2-tcc${prefix}/lib/tcc/libtcc1.a
+# save & print hashes
+log_file=/tmp/${ddc_env}.txt
+echo "***********${ddc_env}***********" >> ${log_file}
+echo "___________BINARIES___________" >> ${log_file}
+sha256sum ${build_dir}/cp-tcc${prefix}/bin/tcc ${build_dir}/ca-tcc${prefix}/bin/tcc ${build_dir}/stage2-tcc${prefix}/bin/tcc >> ${log_file}
+echo "___________LIBTCC___________" >> ${log_file}
+sha256sum ${build_dir}/cp-tcc${prefix}/lib/libtcc.a ${build_dir}/ca-tcc${prefix}/lib/libtcc.a ${build_dir}/stage2-tcc${prefix}/lib/libtcc.a >> ${log_file}
+echo "___________LIBTCC1___________" >> ${log_file}
+sha256sum ${build_dir}/cp-tcc${prefix}/lib/tcc/libtcc1.a ${build_dir}/ca-tcc${prefix}/lib/tcc/libtcc1.a ${build_dir}/stage2-tcc${prefix}/lib/tcc/libtcc1.a >> ${log_file}
+cat ${log_file}