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Merge bitcoin/bitcoin#30239: Ephemeral Dust
5c2e291060 bench: Add basic CheckEphemeralSpends benchmark (Greg Sanders)
3f6559fa58 Add release note for ephemeral dust (Greg Sanders)
71a6ab4b33 test: unit test for CheckEphemeralSpends (Greg Sanders)
21d28b2f36 fuzz: add ephemeral_package_eval harness (Greg Sanders)
127719f516 test: Add CheckMempoolEphemeralInvariants (Greg Sanders)
e2e30e89ba functional test: Add ephemeral dust tests (Greg Sanders)
4e68f90139 rpc: disallow in-mempool prioritisation of dusty tx (Greg Sanders)
e1d3e81ab4 policy: Allow dust in transactions, spent in-mempool (Greg Sanders)
04b2714fbb functional test: Add new -dustrelayfee=0 test case (Greg Sanders)

Pull request description:

  A replacement for https://github.com/bitcoin/bitcoin/pull/29001

  Now that we have 1P1C relay, TRUC transactions and sibling eviction, it makes sense to retarget this feature more narrowly by not introducing a new output type, and simple focusing on the feature of allowing temporary dust in the mempool.

  Users of this can immediately use dust outputs as:
  1. Single keyed anchor (can be shared by multiple parties)
  2. Single unkeyed anchor, ala P2A

  Which is useful when the parent transaction cannot have fees for technical or accounting reasons.

  What I'm calling "keyed" anchors would be used anytime you don't want a third party to be able to run off with the utxo. As a motivating example, in Ark there is the concept of a "forfeit transaction" which spends a "connector output". The connector output would ideally be 0-value, but you would not want that utxo spend by anyone, because this would cause financial loss for the coordinator of the service: https://arkdev.info/docs/learn/concepts#forfeit-transaction

  Note that this specific use-case likely doesn't work as it involves a tree of dust, but the connector idea in general demonstrates how it could be used.

  Another related example is connector outputs in BitVM2: https://bitvm.org/bitvm2.html .

  Note that non-TRUC usage will be impractical unless the minrelay requirement on individual transactions are dropped in general, which should happen post-cluster mempool.

  Lightning Network intends to use this feature post-29.0 if available: https://github.com/lightning/bolts/issues/1171#issuecomment-2373748582

  It's also useful for Ark, ln-symmetry, spacechains, Timeout Trees, and other constructs with large presigned trees or other large-N party smart contracts.

ACKs for top commit:
  glozow:
    reACK 5c2e291060 via range-diff. Nothing but a rebase and removing the conflict.
  theStack:
    re-ACK 5c2e291060

Tree-SHA512: 88e6a6b3b91dc425de47ccd68b7668c8e98c5683712e892c588f79ad639ae95c665e2d5563dd5e5797983e7542cbd1d4353bc90a7298d45a1843b05a417f09f5
2024-11-12 20:05:01 -05:00
.github ci: make ctest stop on failure 2024-11-08 13:06:51 -05:00
.tx qt: Bump Transifex slug for 28.x 2024-07-30 16:14:19 +01:00
ci ci: make ctest stop on failure 2024-11-08 13:06:51 -05:00
cmake Merge bitcoin/bitcoin#31181: cmake: Revamp FindLibevent module 2024-11-11 15:31:58 +00:00
contrib Merge bitcoin/bitcoin#26593: tracing: Only prepare tracepoint arguments when actually tracing 2024-11-11 10:33:28 +00:00
depends Merge bitcoin/bitcoin#31181: cmake: Revamp FindLibevent module 2024-11-11 15:31:58 +00:00
doc Add release note for ephemeral dust 2024-11-12 09:41:24 -05:00
share build: Rename PACKAGE_* variables to CLIENT_* 2024-10-28 12:35:55 +00:00
src bench: Add basic CheckEphemeralSpends benchmark 2024-11-12 09:41:24 -05:00
test Merge bitcoin/bitcoin#30239: Ephemeral Dust 2024-11-12 20:05:01 -05:00
.cirrus.yml Squashed 'src/secp256k1/' changes from 2f2ccc46954..0cdc758a563 2024-11-04 14:59:46 -05:00
.editorconfig code style: update .editorconfig file 2024-09-13 17:55:10 +02:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore Squashed 'src/secp256k1/' changes from 2f2ccc46954..0cdc758a563 2024-11-04 14:59:46 -05:00
.python-version Bump python minimum supported version to 3.10 2024-08-28 15:53:07 +02:00
.style.yapf Update .style.yapf 2023-06-01 23:35:10 +05:30
CMakeLists.txt Merge bitcoin/bitcoin#31173: cmake: Add FindQRencode module and enable libqrencode package for MSVC 2024-11-06 12:11:39 +00:00
CMakePresets.json build, msvc: Enable libqrencode vcpkg package 2024-11-05 16:38:56 +00:00
CONTRIBUTING.md doc: replace Autotools with CMake 2024-08-29 16:06:29 +01:00
COPYING doc: upgrade Bitcoin Core license to 2024 2024-01-10 16:29:01 -06:00
INSTALL.md doc: Added hyperlink for doc/build 2021-09-09 19:53:12 +05:30
libbitcoinkernel.pc.in build: Rename PACKAGE_* variables to CLIENT_* 2024-10-28 12:35:55 +00:00
README.md Squashed 'src/secp256k1/' changes from 2f2ccc46954..0cdc758a563 2024-11-04 14:59:46 -05:00
SECURITY.md Update security.md contact for achow101 2023-12-14 18:14:54 -05:00
vcpkg.json build, msvc: Enable libqrencode vcpkg package 2024-11-05 16:38:56 +00:00

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/.

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 during the generation of the build system) with: ctest. 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: build/test/functional/test_runner.py (assuming build is your build directory).

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.