389cf32aca
92c1d7d1f8664fe2d259cc609c87f603609b2b60 validation: Use MAX_TIMEWARP constant as testnet4 timewarp defense delta (Fabian Jahr) 4b2fad502e5c264012e94d2915476f4dfcbd192d doc: Add release notes for 29775 (Fabian Jahr) f7cc97313b91483ed4fed298919ecb16054931ee doc: Align deprecation warnings (Fabian Jahr) 1163b08378a50a9be00ced434d55f1b04bc9dea6 chainparams: Add initial minimum chain work for Testnet4 (Fabian Jahr) Pull request description: This completes follow-ups left open in #29775. - Adds release notes - Addresses the [misalignment](https://github.com/bitcoin/bitcoin/pull/29775#discussion_r1706982102) in deprecation warnings and hints at the intention to remove support for Testnet3. - Adds initial minimum chainwork for Testnet4. - Use the `MAX_TIMEWARP` constant as the timewarp defense delta, equal to `MAX_FUTURE_BLOCK_TIME`. ACKs for top commit: Sjors: ACK 92c1d7d1f8664fe2d259cc609c87f603609b2b60 achow101: ACK 92c1d7d1f8664fe2d259cc609c87f603609b2b60 tdb3: re ACK 92c1d7d1f8664fe2d259cc609c87f603609b2b60 Tree-SHA512: 7ebdac7809f96231f75ca62706af59cd1ed27f713a4c7be5e2ad69fae95832b146b3ea23c712fb03b412da1deda7e8a5dae55bb2bbd2dcfd9f926e85c2a72666
Bitcoin Core integration/staging tree
For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.
What is Bitcoin Core?
Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.
Further information about Bitcoin Core is available in the doc folder.
License
Bitcoin Core is released under the terms of the MIT license. See 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 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 and useful hints for developers can be found in 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 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.
There are also regression and integration tests, written
in Python.
These tests can be run (if the test dependencies 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.
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.