Bitcoin Core integration/staging tree
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laanwj d570a63894 qt: Update transifex resource blob to 23.0 8 months ago
.github doc: Remove label from good first issue template 2 years ago
.tx qt: Update transifex resource blob to 23.0 8 months ago
build-aux/m4 build: Drop redundant AC_SUBST macros 9 months ago
build_msvc Merge bitcoin/bitcoin#23828: scripted-diff: Rename libbitcoin_server.a to libbitcoin_node.a 9 months ago
ci ci: Drop no longer needed `update-alternatives` 8 months ago
contrib Merge bitcoin/bitcoin#24166: p2p, contrib: add cjdns hardcoded seeds and update the i2p seeds 8 months ago
depends Merge bitcoin/bitcoin#24131: build, qt: Fix Windows cross-compiling with Qt 5.15 8 months ago
doc doc: Install only "-posix" MinGW compiler when possible 8 months ago
share build: force CRCCheck in Windows installer 8 months ago
src Merge bitcoin/bitcoin#24166: p2p, contrib: add cjdns hardcoded seeds and update the i2p seeds 8 months ago
test Merge bitcoin/bitcoin#24219: Fix implicit-integer-sign-change in bloom 8 months ago
.cirrus.yml ci: Bump CentOS 8 image 8 months ago
.editorconfig ci: Drop AppVeyor CI integration 1 year ago
.gitattributes Separate protocol versioning from clientversion 8 years ago
.gitignore build: use a static .tiff for macOS .dmg over generating 9 months ago
.python-version Bump minimum python version to 3.6 2 years ago
.style.yapf test: .style.yapf: Set column_limit=160 4 years ago Use the imperative mood in example subject line 10 months ago
COPYING doc: Update license year range to 2022 9 months ago doc: Added hyperlink for doc/build 1 year ago Merge bitcoin/bitcoin#23784: bitcoin-tx: Require that input amount is provided for witness transactions 9 months ago doc: Rework internal and external links 2 years ago
REVIEWERS reviewers: add tracing 9 months ago doc: Suggest `` as keyserver in 11 months ago scripted-diff: Bump copyright of files changed in 2019 3 years ago build: disable external signer on Windows 8 months ago build: remove libcrypto as internal dependency in libbitcoinconsensus.pc 3 years ago

Bitcoin Core integration/staging tree

For an immediately usable, binary version of the Bitcoin Core software, see

Further information about Bitcoin Core is available in the doc folder.

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.


Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see

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 are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The 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 and useful hints for developers can be found in doc/


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 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/

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: test/functional/

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.


Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process 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.