diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9044d436d..09fb16e0b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,30 +15,36 @@ jobs:
       - name: setup python
         uses: actions/setup-python@v5
         with:
-          # use the minimum py ver we support to
-          # generate the wheel
+          # use the minimum py ver we support to generate the wheel
           python-version: 3.8
 
-      - name: install packages
-        run: >-
+      - name: install build deps
+        run: |
+          python -m pip install -U pip build
           python -m pip install -r proto/requirements.txt
 
-      - name: build a binary
-        run: >-
-          python -m
-          build
-          --wheel
-          --outdir dist/
-          .
+      - name: build otaclient package
+        run: |
+          python -m build --wheel --outdir dist/ .
 
       - name: build a proto binary
         run: |
-          cd proto
+          pushd proto
           make
+          popd
+          cp proto/pb2/dist/*.whl dist
+
+      - name: calculate checksum
+        run: |
+          for WHL in dist/*.whl; \
+            do \
+              sha256sum ${WHL} | sed -E "s@(\w+)\s+.*@sha256:\1@" > \
+                ${WHL}.checksum; \
+            done
 
       - name: release
         uses: softprops/action-gh-release@v1
         with:
           files: |
             dist/*.whl
-            proto/pb2/dist/*.whl
+            dist/*.checksum
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 37a6c6ab6..3992bbacf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,168 @@
+# Byte-compiled / optimized / DLL files
 __pycache__/
-ota-image.*
-venv/*
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
 .coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+# build related
+build
+*.egg-info
+
+# local vscode configs
+.devcontainer
+.vscode
diff --git a/otaclient/.gitignore b/otaclient/.gitignore
new file mode 100644
index 000000000..fe775bed5
--- /dev/null
+++ b/otaclient/.gitignore
@@ -0,0 +1,2 @@
+# generated version file by build
+_version.py
\ No newline at end of file