Bitcoin Core 0.9.2 release candidate 1 is available

Bitcoin Core version 0.9.2rc1 is now available from:

  https://bitcoin.org/bin/0.9.2/test

This is a release candidate for a new minor version release, bringing mostly bug fixes and some minor improvements. Release candidates are wide-scale testing releases, so use with care. Non-technical users may want to wait until 0.9.2 final.

Please report bugs using the issue tracker at github:

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

Upgrading and downgrading ==========================

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 for older versions), then run the installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).

If you are upgrading from version 0.7.2 or earlier, the first time you run 0.9.0 your blockchain files will be re-indexed, which will take anywhere from 30 minutes to several hours, depending on the speed of your machine.

Downgrading warnings --------------------

The 'chainstate' for this release is not always compatible with previous releases, so if you run 0.9.x and then decide to switch back to a 0.8.x release you might get a blockchain validation error when starting the old release (due to 'pruned outputs' being omitted from the index of unspent transaction outputs).

Running the old release with the -reindex option will rebuild the chainstate data structures and correct the problem.

Also, the first time you run a 0.8.x release on a 0.9 wallet it will rescan the blockchain for missing spent coins, which will take a long time (tens of minutes on a typical machine).

Important changes ==================

Gitian OSX build -----------------

The deterministic build system that was already used for Windows and Linux builds is now used for OSX as well. Although the resulting executables have been tested quite a bit, there could be possible regressions. Be sure to report these on the Github bug tracker mentioned above.

Compatibility of Linux build -----------------------------

For Linux we now build against Qt 4.6, and filter the symbols for libstdc++ and glibc. This brings back compatibility with

- Debian 6+ / Tails
- Ubuntu 10.04
- CentOS 6.5

0.9.2 Release notes =======================

RPC: - Add `getwalletinfo`, `getblockchaininfo` and `getnetworkinfo` calls (will replace hodge-podge `getinfo` at some point) - Add a `relayfee` field to `getnetworkinfo` - Fix RPC related shutdown hangs and leaks - Always show syncnode in `getpeerinfo` - `sendrawtransaction`: report the reject code and reason, and make it possible to re-send transactions that are already in the mempool - `getmininginfo` show right genproclimit

Command-line options: - Fix `-printblocktree` output - Show error message if ReadConfigFile fails

Block-chain handling and storage: - Fix for GetBlockValue() after block 13,440,000 (BIP42) - Upgrade leveldb to 1.17

Protocol and network code: - Per-peer block download tracking and stalled download detection - Add new DNS seed from bitnodes.io - Prevent socket leak in ThreadSocketHandler and correct some proxy related socket leaks

Wallet: - Make GetAvailableCredit run GetHash() only once per transaction (performance improvement) - Lower paytxfee warning threshold from 0.25 BTC to 0.01 BTC - Fix importwallet nTimeFirstKey (trigger necessary rescans) - Log BerkeleyDB version at startup

Build system: - Add OSX build descriptors to gitian - Fix explicit --disable-qt-dbus - Don't require db_cxx.h when compiling with wallet disabled and GUI enabled - Improve missing boost error reporting - Upgrade miniupnpc version to 1.9 - gitian-linux: --enable-glibc-back-compat for binary compatibility with old distributions - gitian: don't export any symbols from executable - gitian: build against Qt 4.6 - devtools: add script to check symbols from Linux gitian executables - Remove build-time no-IPv6 setting

GUI: - Fix various coin control visual issues - Show number of in/out connections in debug console - Show weeks as well as years behind for long timespans behind - Enable and disable the Show and Remove buttons for requested payments history based on whether any entry is selected. - Show also value for options overridden on command line in options dialog - Fill in label from address book also for URIs - Fixes feel when resizing the last column on tables (issue #2862) - Fix ESC in disablewallet mode - Add expert section to wallet tab in optionsdialog - Do proper boost::path conversion (fixes unicode in datadir) - Only override -datadir if different from the default (fixes -datadir in config file) - Show rescan progress at start-up - Show importwallet progress - Get required locks upfront in polling functions (avoids hanging on locks) - Catch Windows shutdown events while client is running - Optionally add third party links to transaction context menu - Check for !pixmap() before trying to export QR code (avoids crashes when no QR code could be generated) - Fix "Start bitcoin on system login"

Miscellaneous:

- Replace non-threadsafe C functions (gmtime, strerror and setlocale) - Add missing cs_main and wallet locks - Avoid exception at startup when system locale not recognized - Changed bitrpc.py's raw_input to getpass for passwords to conceal characters during command line input - devtools: add a script to fetch and postprocess translations

Credits --------

Thanks to everyone who contributed to this release:

- Addy Yeow
- Altoidnerd
- Andrea D'Amore
- Andreas Schildbach
- Bardi Harborow
- Brandon Dahler
- Bryan Bishop
- Chris Beams
- Christian von Roques
- Cory Fields
- Cozz Lovan
- daniel
- Daniel Newton
- David A. Harding
- ditto-b
- duanemoody
- Eric S. Bullington
- Fabian Raetz
- Gavin Andresen
- Gregory Maxwell
- gubatron
- Haakon Nilsen
- harry
- Hector Jusforgues
- Isidoro Ghezzi
- Jeff Garzik
- Johnathan Corgan
- jtimon
- Kamil Domanski
- langerhans
- Luke Dashjr
- Manuel Araoz
- Mark Friedenbach
- Matt Corallo
- Matthew Bogosian
- Meeh
- Michael Ford
- Michagogo
- Mikael Wikman
- Mike Hearn
- olalonde
- paveljanik
- peryaudo
- Philip Kaufmann
- philsong
- Pieter Wuille
- R E Broadley
- richierichrawr
- Rune K. Svendsen
- rxl
- shshshsh
- Simon de la Rouviere
- Stuart Cardall
- super3
- Telepatheic
- Thomas Zander
- Torstein Husebø
- Warren Togami
- Wladimir J. van der Laan
- Yoichi Hirai

On Wed, Jun 4, 2014 at 8:37 AM, Wladimir <laanwj@gmail•com> wrote:

> Bitcoin Core version 0.9.2rc1 is now available from:
>
>   https://bitcoin.org/bin/0.9.2/test
>
> This is a release candidate for a new minor version release, bringing
> mostly bug fixes and some minor improvements.

Almost forgot to mention: new translations from Transifex,

Much thanks to everyone who submitted translations there as well (I don't have a list handy right now)!

Wladimir