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Bitcoin Core version 0.14.2 is now available from:
estimatefee / estimatepriority RPC methods New RPC methods: return an estimate of the fee (or priority) a transaction needs to be likely to confirm in a given number of blocks. Mike Hearn created the first version of this method for estimating fees. It works as follows: For transactions that took 1 to N (I picked N=25) blocks to confirm, keep N buckets with at most 100 entries in each recording the fees-per-kilobyte paid by those transactions. (separate buckets are kept for transactions that confirmed because they are high-priority) The buckets are filled as blocks are found, and are saved/restored in a new fee_estiamtes.dat file in the data directory. A few variations on Mike's initial scheme: To estimate the fee needed for a transaction to confirm in X buckets, all of the samples in all of the buckets are used and a median of all of the data is used to make the estimate. For example, imagine 25 buckets each containing the full 100 entries. Those 2,500 samples are sorted, and the estimate of the fee needed to confirm in the very next block is the 50'th-highest-fee-entry in that sorted list; the estimate of the fee needed to confirm in the next two blocks is the 150'th-highest-fee-entry, etc. That algorithm has the nice property that estimates of how much fee you need to pay to get confirmed in block N will always be greater than or equal to the estimate for block N+1. It would clearly be wrong to say "pay 11 uBTC and you'll get confirmed in 3 blocks, but pay 12 uBTC and it will take LONGER". A single block will not contribute more than 10 entries to any one bucket, so a single miner and a large block cannot overwhelm the estimates.
11 years ago
<https://bitcoin.org/bin/bitcoin-core-0.14.2/>
This is a new minor version release, including various bugfixes 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/>
Compatibility
==============
Bitcoin Core is extensively tested on multiple operating systems using
the Linux kernel, macOS 10.8+, and Windows Vista and later.
Microsoft ended support for Windows XP on [April 8th, 2014](https://www.microsoft.com/en-us/WindowsForBusiness/end-of-xp-support),
No attempt is made to prevent installing or running the software on Windows XP, you
can still do so at your own risk but be aware that there are known instabilities and issues.
Please do not report issues about Windows XP to the issue tracker.
Bitcoin Core should also work on most other Unix-like systems but is not
frequently tested on them.
Notable changes
===============
miniupnp CVE-2017-8798
----------------------------
Bundled miniupnpc was updated to 2.0.20170509. This fixes an integer signedness error
(present in MiniUPnPc v1.4.20101221 through v2.0) that allows remote attackers
(within the LAN) to cause a denial of service or possibly have unspecified
other impact.
This only affects users that have explicitly enabled UPnP through the GUI
setting or through the `-upnp` option, as since the last UPnP vulnerability
(in Bitcoin Core 0.10.3) it has been disabled by default.
If you use this option, it is recommended to upgrade to this version as soon as
possible.
Known Bugs
==========
Since 0.14.0 the approximate transaction fee shown in Bitcoin-Qt when using coin
control and smart fee estimation does not reflect any change in target from the
smart fee slider. It will only present an approximate fee calculated using the
default target. The fee calculated using the correct target is still applied to
the transaction and shown in the final send confirmation dialog.
0.14.2 Change log
=================
Detailed release notes follow. This overview includes changes that affect
behavior, not code moves, refactors and string updates. For convenience in locating
the code changes and accompanying discussion, both the pull request and
git merge commit are mentioned.
### RPC and other APIs
- #10410 `321419b` Fix importwallet edge case rescan bug (ryanofsky)
### P2P protocol and network code
- #10424 `37a8fc5` Populate services in GetLocalAddress (morcos)
- #10441 `9e3ad50` Only enforce expected services for half of outgoing connections (theuni)
### Build system
- #10414 `ffb0c4b` miniupnpc 2.0.20170509 (fanquake)
- #10228 `ae479bc` Regenerate bitcoin-config.h as necessary (theuni)
### Miscellaneous
- #10245 `44a17f2` Minor fix in build documentation for FreeBSD 11 (shigeya)
- #10215 `0aee4a1` Check interruptNet during dnsseed lookups (TheBlueMatt)
### GUI
- #10231 `1e936d7` Reduce a significant cs_main lock freeze (jonasschnelli)
### Wallet
- #10294 `1847642` Unset change position when there is no change (instagibbs)
Credits
=======
Thanks to everyone who directly contributed to this release:
- Alex Morcos
- Cory Fields
- fanquake
- Gregory Sanders
- Jonas Schnelli
- Matt Corallo
- Russell Yanofsky
- Shigeya Suzuki
- Wladimir J. van der Laan
As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).