Inside Bitcoin
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Inside Bitcoin
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The code behind the network, with room to understand it.
Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.
10.19.1 Release Notes2===============================4Bitcoin Core version 0.19.1 is now available from:6<https://bitcoincore.org/bin/bitcoin-core-0.19.1/>8This minor release includes various bug fixes and performance9improvements, as well as updated translations.11Please report bugs using the issue tracker at GitHub:13<https://github.com/bitcoin/bitcoin/issues>15To receive security and update notifications, please subscribe to:17<https://bitcoincore.org/en/list/announcements/join/>19How to Upgrade20==============22If you are running an older version, shut it down. Wait until it has completely23shut down (which might take a few minutes for older versions), then run the24installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on Mac)25or `bitcoind`/`bitcoin-qt` (on Linux).27Upgrading directly from a version of Bitcoin Core that has reached its EOL is28possible, but it might take some time if the datadir needs to be migrated. Old29wallet versions of Bitcoin Core are generally supported.31Compatibility32==============34Bitcoin Core is supported and extensively tested on operating systems using35the Linux kernel, macOS 10.10+, and Windows 7 and newer. It is not recommended36to use Bitcoin Core on unsupported systems.38Bitcoin Core should also work on most other Unix-like systems but is not39as frequently tested on them.41From Bitcoin Core 0.17.0 onwards, macOS versions earlier than 10.10 are no42longer supported, as Bitcoin Core is now built using Qt 5.9.x which requires43macOS 10.10+. Additionally, Bitcoin Core does not yet change appearance when44macOS "dark mode" is activated.46In addition to previously supported CPU platforms, this release's pre-compiled47distribution provides binaries for the RISC-V platform.490.19.1 change log50=================52### Wallet53- #17643 Fix origfee return for bumpfee with feerate arg (instagibbs)54- #16963 Fix `unique_ptr` usage in boost::signals2 (promag)55- #17258 Fix issue with conflicted mempool tx in listsinceblock (adamjonas, mchrostowski)56- #17924 Bug: IsUsedDestination shouldn't use key id as script id for ScriptHash (instagibbs)57- #17621 IsUsedDestination should count any known single-key address (instagibbs)58- #17843 Reset reused transactions cache (fjahr)60### RPC and other APIs61- #17687 cli: Fix fatal leveldb error when specifying -blockfilterindex=basic twice (brakmic)62- #17728 require second argument only for scantxoutset start action (achow101)63- #17445 zmq: Fix due to invalid argument and multiple notifiers (promag)64- #17524 psbt: handle unspendable psbts (achow101)65- #17156 psbt: check that various indexes and amounts are within bounds (achow101)67### GUI68- #17427 Fix missing qRegisterMetaType for `size_t` (hebasto)69- #17695 disable File-\>CreateWallet during startup (fanquake)70- #17634 Fix comparison function signature (hebasto)71- #18062 Fix unintialized WalletView::progressDialog (promag)73### Tests and QA74- #17416 Appveyor improvement - text file for vcpkg package list (sipsorcery)75- #17488 fix "bitcoind already running" warnings on macOS (fanquake)76- #17980 add missing #include to fix compiler errors (kallewoof)78### Platform support79- #17736 Update msvc build for Visual Studio 2019 v16.4 (sipsorcery)80- #17364 Updates to appveyor config for VS2019 and Qt5.9.8 + msvc project fixes (sipsorcery)81- #17887 bug-fix macos: give free bytes to `F_PREALLOCATE` (kallewoof)83### Miscellaneous84- #17897 init: Stop indexes on shutdown after ChainStateFlushed callback (jimpo)85- #17450 util: Add missing headers to util/fees.cpp (hebasto)86- #17654 Unbreak build with Boost 1.72.0 (jbeich)87- #17857 scripts: Fix symbol-check & security-check argument passing (fanquake)88- #17762 Log to net category for exceptions in ProcessMessages (laanwj)89- #18100 Update univalue subtree (MarcoFalke)91Credits92=======94Thanks to everyone who directly contributed to this release:96- Aaron Clauson97- Adam Jonas98- Andrew Chow99- Fabian Jahr100- fanquake101- Gregory Sanders102- Harris103- Hennadii Stepanov104- Jan Beich105- Jim Posen106- João Barbosa107- Karl-Johan Alm108- Luke Dashjr109- MarcoFalke110- Michael Chrostowski111- Russell Yanofsky112- Wladimir J. van der Laan114As well as to everyone that helped with translations on115[Transifex](https://www.transifex.com/bitcoin/bitcoin/).
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