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+Bitcoin Core integration/staging tree
+=====================================
+
+https://bitcoincore.org
+
+For an immediately usable, binary version of the Bitcoin Core software, see
+https://bitcoincore.org/en/download/.
+
+Further information about Bitcoin Core is available in the [doc folder](/doc).
+
+What is Bitcoin?
+----------------
+
+Bitcoin is an experimental digital currency that enables instant payments to
+anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate
+with no central authority: managing transactions and issuing money are carried
+out collectively by the network. Bitcoin Core is the name of open source
+software which enables the use of this currency.
+
+For more information read the original Bitcoin whitepaper.
+
+License
+-------
+
+Bitcoin Core is released under the terms of the MIT license. See [COPYING](COPYING) for more
+information or see https://opensource.org/licenses/MIT.
+
+Development Process
+-------------------
+
+The `master` branch is regularly built (see `doc/build-*.md` for instructions) and tested, but it is not guaranteed to be
+completely stable. [Tags](https://github.com/bitcoin/bitcoin/tags) are created
+regularly from release branches to indicate new official, stable release versions of Bitcoin Core.
+
+The https://github.com/bitcoin-core/gui repository is used exclusively for the
+development of the GUI. Its master branch is identical in all monotree
+repositories. Release branches and tags do not exist, so please do not fork
+that repository unless it is for development reasons.
+
+The contribution workflow is described in [CONTRIBUTING.md](CONTRIBUTING.md)
+and useful hints for developers can be found in [doc/developer-notes.md](doc/developer-notes.md).
+
+Testing
+-------
+
+Testing and code review is the bottleneck for development; we get more pull
+requests than we can review and test on short notice. Please be patient and help out by testing
+other people's pull requests, and remember this is a security-critical project where any mistake might cost people
+lots of money.
+
+### Automated Testing
+
+Developers are strongly encouraged to write [unit tests](src/test/README.md) for new code, and to
+submit new unit tests for old code. Unit tests can be compiled and run
+(assuming they weren't disabled in configure) with: `make check`. Further details on running
+and extending unit tests can be found in [/src/test/README.md](/src/test/README.md).
+
+There are also [regression and integration tests](/test), written
+in Python.
+These tests can be run (if the [test dependencies](/test) are installed) with: `test/functional/test_runner.py`
+
+The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS,
+and that unit/sanity tests are run automatically.
+
+### Manual Quality Assurance (QA) Testing
+
+Changes should be tested by somebody other than the developer who wrote the
+code. This is especially important for large or high-risk changes. It is useful
+to add a test plan to the pull request description if testing the changes is
+not straightforward.
+
+Translations
+------------
+
+Changes to translations as well as new translations can be submitted to
+[Bitcoin Core's Transifex page](https://www.transifex.com/bitcoin/bitcoin/).
+
+Translations are periodically pulled from Transifex and merged into the git repository. See the
+[translation process](doc/translation_process.md) for details on how this works.
+
+**Important**: We do not accept translation changes as GitHub pull requests because the next
+pull from Transifex would automatically overwrite them again.
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