1  22.1 Release Notes
  2  ==================
  3  
  4  Bitcoin Core version 22.1 is now available from:
  5  
  6    <https://bitcoincore.org/bin/bitcoin-core-22.1/>
  7  
  8  This release includes new features, various bug fixes and performance
  9  improvements, as well as updated translations.
 10  
 11  Please report bugs using the issue tracker at GitHub:
 12  
 13    <https://github.com/bitcoin/bitcoin/issues>
 14  
 15  To receive security and update notifications, please subscribe to:
 16  
 17    <https://bitcoincore.org/en/list/announcements/join/>
 18  
 19  How to Upgrade
 20  ==============
 21  
 22  If you are running an older version, shut it down. Wait until it has completely
 23  shut down (which might take a few minutes in some cases), then run the
 24  installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on macOS)
 25  or `bitcoind`/`bitcoin-qt` (on Linux).
 26  
 27  Upgrading directly from a version of Bitcoin Core that has reached its EOL is
 28  possible, but it might take some time if the data directory needs to be migrated. Old
 29  wallet versions of Bitcoin Core are generally supported.
 30  
 31  Compatibility
 32  ==============
 33  
 34  Bitcoin Core is supported and extensively tested on operating systems
 35  using the Linux kernel, macOS 10.14+, and Windows 7 and newer.  Bitcoin
 36  Core should also work on most other Unix-like systems but is not as
 37  frequently tested on them.  It is not recommended to use Bitcoin Core on
 38  unsupported systems.
 39  
 40  From Bitcoin Core 22.0 onwards, macOS versions earlier than 10.14 are no longer supported.
 41  
 42  Notable changes
 43  ===============
 44  
 45  Updated settings
 46  ----------------
 47  
 48  - In previous releases, the meaning of the command line option
 49    `-persistmempool` (without a value provided) incorrectly disabled mempool
 50    persistence.  `-persistmempool` is now treated like other boolean options to
 51    mean `-persistmempool=1`. Passing `-persistmempool=0`, `-persistmempool=1`
 52    and `-nopersistmempool` is unaffected. (#23061)
 53  
 54  ### P2P
 55  
 56  ### RPC and other APIs
 57  
 58  - #25237 rpc: Capture UniValue by ref for rpcdoccheck
 59  - #25983 Prevent data race for pathHandlers
 60  - #26275 Fix crash on deriveaddresses when index is 2147483647 (2^31-1)
 61  
 62  ### Wallet
 63  
 64  - #22781 wallet: fix the behavior of IsHDEnabled
 65  - #22949 fee: Round up fee calculation to avoid a lower than expected feerate
 66  - #23333 wallet: fix segfault by avoiding invalid default-ctored external_spk_managers entry
 67  
 68  ### Build system
 69  
 70  - #22820 build, qt: Fix typo in QtInputSupport check
 71  - #23045 build: Restrict check for CRC32C intrinsic to aarch64
 72  - #23148 build: Fix guix linker-loader path and add check_ELF_interpreter
 73  - #23314 build: explicitly disable libsecp256k1 openssl based tests
 74  - #23580 build: patch qt to explicitly define previously implicit header include
 75  - #24215 guix: ignore additional failing certvalidator test
 76  - #24256 build: Bump depends packages (zmq, libXau)
 77  - #25201 windeploy: Renewed windows code signing certificate
 78  - #25985 Revert "build: Use Homebrew's sqlite package if it is available"
 79  - #26633 depends: update qt 5.12 url to archive location
 80  
 81  ### GUI
 82  
 83  - #gui631 Disallow encryption of watchonly wallets
 84  - #gui680 Fixes MacOS 13 segfault by preventing certain notifications
 85  - #24498 qt: Avoid crash on startup if int specified in settings.json
 86  
 87  ### Tests
 88  
 89  - #23716 test: replace hashlib.ripemd160 with an own implementation
 90  - #24239 test: fix ceildiv division by using integers
 91  
 92  ### Utilities
 93  
 94  - #22390 system: skip trying to set the locale on NetBSD
 95  - #22895 don't call GetBlockPos in ReadBlockFromDisk without cs_main lock
 96  - #24104 fs: Make compatible with boost 1.78
 97  
 98  ### Miscellaneous
 99  
100  - #23335 refactor: include a missing <limits> header in fs.cpp
101  - #23504 ci: Replace soon EOL hirsute with jammy
102  - #26321 Adjust .tx/config for new Transifex CLI
103  
104  Credits
105  =======
106  
107  Thanks to everyone who directly contributed to this release:
108  
109  - Andrew Chow
110  - BlackcoinDev
111  - Carl Dong
112  - Hennadii Stepanov
113  - Joan Karadimov
114  - John Moffett
115  - Jon Atack
116  - Kittywhiskers Van Gogh
117  - Marco Falke
118  - Martin Zumsande
119  - Michael Ford
120  - muxator
121  - Pieter Wuille
122  - Ryan Ofsky
123  - Saibato
124  - Sebastian Falbesoner
125  - W. J. van der Laan
126  
127  As well as to everyone that helped with translations on
128  [Transifex](https://www.transifex.com/bitcoin/bitcoin/).