Bitcoin Core installation binaries can be downloaded from bitcoincore.org and the source-code is available from the Bitcoin Core source repository.

Table of Contents

22.1 Release Notes

Bitcoin Core version 22.1 is now available from:

https://bitcoincore.org/bin/bitcoin-core-22.1/

This release includes new features, 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

To receive security and update notifications, please subscribe to:

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 extensively tested on operating systems
using the Linux kernel, macOS 10.14+, and Windows 7 and newer. 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.

From Bitcoin Core 22.0 onwards, macOS versions earlier than 10.14 are no longer supported.

Notable changes

Updated settings

In previous releases, the meaning of the command line option
-persistmempool (without a value provided) incorrectly disabled mempool
persistence. -persistmempool is now treated like other boolean options to
mean -persistmempool=1. Passing -persistmempool=0, -persistmempool=1
and -nopersistmempool is unaffected. (#23061)

P2P

RPC and other APIs

#25237 rpc: Capture UniValue by ref for rpcdoccheck
#25983 Prevent data race for pathHandlers
#26275 Fix crash on deriveaddresses when index is 2147483647 (2^31-1)

Wallet

#22781 wallet: fix the behavior of IsHDEnabled
#22949 fee: Round up fee calculation to avoid a lower than expected feerate
#23333 wallet: fix segfault by avoiding invalid default-ctored external_spk_managers entry

Build system

#22820 build, qt: Fix typo in QtInputSupport check
#23045 build: Restrict check for CRC32C intrinsic to aarch64
#23148 build: Fix guix linker-loader path and add check_ELF_interpreter
#23314 build: explicitly disable libsecp256k1 openssl based tests
#23580 build: patch qt to explicitly define previously implicit header include
#24215 guix: ignore additional failing certvalidator test
#24256 build: Bump depends packages (zmq, libXau)
#25201 windeploy: Renewed windows code signing certificate
#25985 Revert “build: Use Homebrew’s sqlite package if it is available”
#26633 depends: update qt 5.12 url to archive location

GUI

#gui631 Disallow encryption of watchonly wallets
#gui680 Fixes MacOS 13 segfault by preventing certain notifications
#24498 qt: Avoid crash on startup if int specified in settings.json

Tests

#23716 test: replace hashlib.ripemd160 with an own implementation
#24239 test: fix ceildiv division by using integers

Utilities

#22390 system: skip trying to set the locale on NetBSD
#22895 don’t call GetBlockPos in ReadBlockFromDisk without cs_main lock
#24104 fs: Make compatible with boost 1.78

Miscellaneous

#23335 refactor: include a missing header in fs.cpp
#23504 ci: Replace soon EOL hirsute with jammy
#26321 Adjust .tx/config for new Transifex CLI

Credits

Thanks to everyone who directly contributed to this release:

Andrew Chow
BlackcoinDev
Carl Dong
Hennadii Stepanov
Joan Karadimov
John Moffett
Jon Atack
Kittywhiskers Van Gogh
Marco Falke
Martin Zumsande
Michael Ford
muxator
Pieter Wuille
Ryan Ofsky
Saibato
Sebastian Falbesoner
W. J. van der Laan

As well as to everyone that helped with translations on
Transifex.