Bitcoin Forum

Bitcoin Core version 29.1 is now available from:

https://bitcoincore.org/bin/bitcoin-core-29.1/ (https://bitcoincore.org/bin/bitcoin-core-29.1/)

This release includes various bug fixes and performance
improvements, as well as updated translations.

Please report bugs using the issue tracker at GitHub:

https://github.com/bitcoin/bitcoin/issues (https://github.com/bitcoin/bitcoin/issues)

To receive security and update notifications, please subscribe to:

https://bitcoincore.org/en/list/announcements/join/ (https://bitcoincore.org/en/list/announcements/join/)

How to Upgrade

If you are running an older version, shut it down. Wait until it has completely
shut down (which might take a few minutes in some cases), then run the
installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on macOS)
or bitcoind/bitcoin-qt (on Linux).

Upgrading directly from a version of Bitcoin Core that has reached its EOL is
possible, but it might take some time if the data directory needs to be migrated. Old
wallet versions of Bitcoin Core are generally supported.

Compatibility

Bitcoin Core is supported and tested on operating systems using the
Linux Kernel 3.17+, macOS 13+, and Windows 10+. Bitcoin
Core should also work on most other Unix-like systems but is not as
frequently tested on them. It is not recommended to use Bitcoin Core on
unsupported systems.

Notable changes

Mempool Policy

• The maximum number of potentially executed legacy signature operations in a
  single standard transaction is now limited to 2500. Signature operations in all
  previous output scripts, in all input scripts, as well as all P2SH redeem
  scripts (if there are any) are counted toward the limit. The new limit is
  assumed to not affect any known typically formed standard transactions. The
  change was done to prepare for a possible BIP54 deployment in the future.
  
• #32521 (https://github.com/bitcoin/bitcoin/pull/32521) policy: make pathological transactions packed with legacy sigops non-standard
  
• The minimum block feerate (-blockmintxfee) has been changed to 1 satoshi per kvB. It can still be changed using the
  configuration option.
  
• The default minimum relay feerate (-minrelaytxfee) and incremental relay feerate (-incrementalrelayfee) have been
  changed to 100 satoshis per kvB. They can still be changed using their respective configuration options, but it is
  recommended to change both together if you decide to do so.
  
  • Other minimum feerates (e.g. the dust feerate, the minimum returned by the fee estimator, and all feerates used by
    the wallet) remain unchanged. The mempool minimum feerate still changes in response to high volume.
  • Note that unless these lower defaults are widely adopted across the network, transactions created with lower fee
    rates are not guaranteed to propagate or confirm. The wallet feerates remain unchanged; -mintxfee must be changed
    before attempting to create transactions with lower feerates using the wallet.
• #33106 (https://github.com/bitcoin/bitcoin/pull/33106) policy: lower the default blockmintxfee, incrementalrelayfee, minrelaytxfee
  

Logging

Unconditional logging to disk is now rate limited by giving each source location
a quota of 1MiB per hour. Unconditional logging is any logging with a log level
higher than debug, that is info, warning, and error. All logs will be
prefixed with if there is at least one source location that is currently
being suppressed. (#32604 (https://github.com/bitcoin/bitcoin/pull/32604))

When -logsourcelocations is enabled, the log output now contains the entire
function signature instead of just the function name. (#32604 (https://github.com/bitcoin/bitcoin/pull/32604))

RPC

• The dumptxoutset RPC now requires a type parameter to be specified. To maintain pre
  v29.0 behavior, use the latest parameter. Documenting this change was missed in the v29.0
  release notes. (#30808 (https://github.com/bitcoin/bitcoin/pull/30808))

Updated Settings

• The -maxmempool and -dbcache startup parameters are now capped on
  32-bit systems to 500MB and 1GiB respectively.
  
• #32530 (https://github.com/bitcoin/bitcoin/pull/32530) node: cap -maxmempool and -dbcache values for 32-bit
  

Wallet

• #31757 (https://github.com/bitcoin/bitcoin/pull/31757) wallet: fix crash on double block disconnection
• #32553 (https://github.com/bitcoin/bitcoin/pull/32553) wallet: Fix logging of wallet version

P2P

• #32826 (https://github.com/bitcoin/bitcoin/pull/32826) p2p: add more bad ports

Test

• #32069 (https://github.com/bitcoin/bitcoin/pull/32069) test: fix intermittent failure in wallet_reorgsrestore.py
• #32286 (https://github.com/bitcoin/bitcoin/pull/32286) test: Handle empty string returned by CLI as None in RPC tests
• #32312 (https://github.com/bitcoin/bitcoin/pull/32312) test: Fix feature_pruning test after nTime typo fix
• #32336 (https://github.com/bitcoin/bitcoin/pull/32336) test: Suppress upstream -Wduplicate-decl-specifier in bpfcc
• #32463 (https://github.com/bitcoin/bitcoin/pull/32463) test: fix an incorrect feature_fee_estimation.py subtest
• #32483 (https://github.com/bitcoin/bitcoin/pull/32483) test: fix two intermittent failures in wallet_basic.py
• #32630 (https://github.com/bitcoin/bitcoin/pull/32630) test: fix sync function in rpc_psbt.py
• #32765 (https://github.com/bitcoin/bitcoin/pull/32765) test: Fix list index out of range error in feature_bip68_sequence.py
• #32742 (https://github.com/bitcoin/bitcoin/pull/32742) test: fix catchup loop in outbound eviction functional test
• #32823 (https://github.com/bitcoin/bitcoin/pull/32823) test: Fix wait_for_getheaders() call in test_outbound_eviction_blocks_relay_only()
• #32833 (https://github.com/bitcoin/bitcoin/pull/32833) test: Add msgtype to msg_generic slots
• #32841 (https://github.com/bitcoin/bitcoin/pull/32841) feature_taproot: sample tx version border values more
• #32850 (https://github.com/bitcoin/bitcoin/pull/32850) test: check P2SH sigop count for coinbase tx
• #32859 (https://github.com/bitcoin/bitcoin/pull/32859) test: correctly detect nonstd TRUC tx vsize in feature_taproot
• #33001 (https://github.com/bitcoin/bitcoin/pull/33001) test: Do not pass tests on unhandled exceptions

Indexes

• #33212 (https://github.com/bitcoin/bitcoin/pull/33212) index: Don't commit state in BaseIndex::Rewind

Util

• #32248 (https://github.com/bitcoin/bitcoin/pull/32248) Remove support for RNDR/RNDRRS for aarch64

Build

• #32356 (https://github.com/bitcoin/bitcoin/pull/32356) cmake: Respect user-provided configuration-specific flags
• #32437 (https://github.com/bitcoin/bitcoin/pull/32437) crypto: disable ASan for sha256_sse4 with Clang
• #32469 (https://github.com/bitcoin/bitcoin/pull/32469) cmake: Allow WITH_DBUS on all Unix-like systems
• #32439 (https://github.com/bitcoin/bitcoin/pull/32439) guix: accomodate migration to codeberg
• #32551 (https://github.com/bitcoin/bitcoin/pull/32551) cmake: Add missed SSE41_CXXFLAGS
• #32568 (https://github.com/bitcoin/bitcoin/pull/32568) depends: use "mkdir -p" when installing xproto
• #32678 (https://github.com/bitcoin/bitcoin/pull/32678) guix: warn and abort when SOURCE_DATE_EPOCH is set
• #32690 (https://github.com/bitcoin/bitcoin/pull/32690) depends: fix SHA256SUM command on OpenBSD (use GNU mode output)
• #32716 (https://github.com/bitcoin/bitcoin/pull/32716) depends: Override host compilers for FreeBSD and OpenBSD
• #32760 (https://github.com/bitcoin/bitcoin/pull/32760) depends: capnp 1.2.0
• #32798 (https://github.com/bitcoin/bitcoin/pull/32798) build: add root dir to CMAKE_PREFIX_PATH in toolchain
• #32805 (https://github.com/bitcoin/bitcoin/pull/32805) cmake: Use HINTS instead of PATHS in find_* commands
• #32814 (https://github.com/bitcoin/bitcoin/pull/32814) cmake: Explicitly specify Boost_ROOT for Homebrew's package
• #32837 (https://github.com/bitcoin/bitcoin/pull/32837) depends: fix libevent _WIN32_WINNT usage
• #32943 (https://github.com/bitcoin/bitcoin/pull/32943) depends: Force CMAKE_EXPORT_NO_PACKAGE_REGISTRY=TRUE
• #32954 (https://github.com/bitcoin/bitcoin/pull/32954) cmake: Drop no longer necessary "cmakeMinimumRequired" object
• #33073 (https://github.com/bitcoin/bitcoin/pull/33073) guix: warn SOURCE_DATE_EPOCH set in guix-codesign

Gui

• #864 (https://github.com/bitcoin/bitcoin/pull/864) Crash fix, disconnect numBlocksChanged() signal during shutdown
• #868 (https://github.com/bitcoin/bitcoin/pull/868) Replace stray tfm::format to cerr with qWarning

Doc

• #32333 (https://github.com/bitcoin/bitcoin/pull/32333) doc: Add missing top-level description to pruneblockchain RPC
• #32353 (https://github.com/bitcoin/bitcoin/pull/32353) doc: Fix fuzz test_runner.py path
• #32389 (https://github.com/bitcoin/bitcoin/pull/32389) doc: Fix test_bitcoin path
• #32607 (https://github.com/bitcoin/bitcoin/pull/32607) rpc: Note in fundrawtransaction doc, fee rate is for package
• #32679 (https://github.com/bitcoin/bitcoin/pull/32679) doc: update tor docs to use bitcoind binary from path
• #32693 (https://github.com/bitcoin/bitcoin/pull/32693) depends: fix cmake compatibility error for freetype
• #32696 (https://github.com/bitcoin/bitcoin/pull/32696) doc: make -DWITH_ZMQ=ON explicit on build-unix.md
• #32708 (https://github.com/bitcoin/bitcoin/pull/32708) rpc, doc: update listdescriptors RCP help
• #32711 (https://github.com/bitcoin/bitcoin/pull/32711) doc: add missing packages for BSDs (cmake, gmake, curl) to depends/README.md
• #32719 (https://github.com/bitcoin/bitcoin/pull/32719) doc, windows: CompanyName "Bitcoin" => "Bitcoin Core project"
• #32776 (https://github.com/bitcoin/bitcoin/pull/32776) doc: taproot became always active in v24.0
• #32777 (https://github.com/bitcoin/bitcoin/pull/32777) doc: fix Transifex 404s
• #32846 (https://github.com/bitcoin/bitcoin/pull/32846) doc: clarify that the "-j N" goes after the "--build build" part
• #32858 (https://github.com/bitcoin/bitcoin/pull/32858) doc: Add workaround for vcpkg issue with paths with embedded spaces
• #33070 (https://github.com/bitcoin/bitcoin/pull/33070) doc/zmq: fix unix socket path example
• #33088 (https://github.com/bitcoin/bitcoin/pull/33088) doc: move cmake -B build -LH up in Unix build docs
• #33133 (https://github.com/bitcoin/bitcoin/pull/33133) rpc: fix getpeerinfo ping duration unit docs
• #33119 (https://github.com/bitcoin/bitcoin/pull/33119) rpc: Fix 'getdescriptoractivity' RPCHelpMan, add test to verify fix
• #33236 (https://github.com/bitcoin/bitcoin/pull/33236) doc: Remove wrong and redundant doxygen tag

CI

• #32184 (https://github.com/bitcoin/bitcoin/pull/32184) ci: Add workaround for vcpkg's libevent package
• #33261 (https://github.com/bitcoin/bitcoin/pull/33261) ci: return to using dash in CentOS job

Misc

• #32187 (https://github.com/bitcoin/bitcoin/pull/32187) refactor: Remove spurious virtual from final ~CZMQNotificationInterface
• #32454 (https://github.com/bitcoin/bitcoin/pull/32454) tracing: fix invalid argument in mempool_monitor
• #32771 (https://github.com/bitcoin/bitcoin/pull/32771) contrib: tracing: Fix read of pmsg_type in p2p_monitor.py
• #33086 (https://github.com/bitcoin/bitcoin/pull/33086) contrib: [tracing] fix pointer argument handling in mempool_monitor.py

Credits

Thanks to everyone who directly contributed to this release:

• 0xB10C
• achow101
• Antoine Poinsot
• benthecarman
• bigspider
• Brandon Odiwuor
• brunoerg
• Bufo
• Christewart
• Crypt-iQ
• davidgumberg
• deadmanoz
• dergoegge
• enirox001
• fanquake
• furszy
• glozow
• instagibbs
• Hennadii Stepanov
• hodlinator
• ismaelsadeeq
• jb55
• jlopp
• josibake
• laanwj
• luisschwab
• MarcoFalke
• Martin Zumsande
• monlovesmango
• nervana21
• pablomartin4btc
• rkrux
• romanz
• ryanofsky
• Sjors
• theStack
• willcl-ark
• zaidmstrr

As well as to everyone that helped with translations on
Transifex (https://explore.transifex.com/bitcoin/bitcoin/).