Bitcoin Core 0.16.1 Released

[achow101]

Bitcoin Core version 0.16.1 is now available from:

  <https://bitcoincore.org/bin/bitcoin-core-0.16.1/>

This is a new minor version release, including new features, 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/>

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).

The first time you run version 0.15.0 or newer, your chainstate database will be converted to a
new format, which will take anywhere from a few minutes to half an hour,
depending on the speed of your machine.

Note that the block database format also changed in version 0.8.0 and there is no
automatic upgrade code from before version 0.8 to version 0.15.0 or higher. Upgrading
directly from 0.7.x and earlier without re-downloading the blockchain is not supported.
However, as usual, old wallet versions are still supported.

Downgrading warning
-------------------

Wallets created in 0.16 and later are not compatible with versions prior to 0.16
and will not work if you try to use newly created wallets in older versions. Existing
wallets that were created with older versions are not affected by this.

Compatibility
==============

Bitcoin Core is extensively tested on multiple operating systems using
the Linux kernel, macOS 10.8+, and Windows Vista and later. Windows XP is not supported.

Bitcoin Core should also work on most other Unix-like systems but is not
frequently tested on them.

Notable changes
===============

Miner block size removed
------------------------

The `-blockmaxsize` option for miners to limit their blocks' sizes was
deprecated in version 0.15.1, and has now been removed. Miners should use the
`-blockmaxweight` option if they want to limit the weight of their blocks'
weights.

0.16.1 change log
------------------

### Policy
- #11423 `d353dd1` [Policy] Several transaction standardness rules (jl2012)

### Mining
- #12756 `e802c22` [config] Remove blockmaxsize option (jnewbery)

### Block and transaction handling
- #13199 `c71e535` Bugfix: ensure consistency of m_failed_blocks after reconsiderblock (sdaftuar)
- #13023 `bb79aaf` Fix some concurrency issues in ActivateBestChain() (skeees)

### P2P protocol and network code
- #12626 `f60e84d` Limit the number of IPs addrman learns from each DNS seeder (EthanHeilman)

### Wallet
- #13265 `5d8de76` Exit SyncMetaData if there are no transactions to sync (laanwj)
- #13030 `5ff571e` Fix zapwallettxes/multiwallet interaction. (jnewbery)

### GUI
- #12999 `1720eb3` Show the Window when double clicking the taskbar icon (ken2812221)
- #12650 `f118a7a` Fix issue: "default port not shown correctly in settings dialog" (251Labs)
- #13251 `ea487f9` Rephrase Bech32 checkbox texts, and enable it with legacy address default (fanquake)

### Build system
- #12474 `b0f692f` Allow depends system to support armv7l (hkjn)
- #12585 `72a3290` depends: Switch to downloading expat from GitHub (fanquake)
- #12648 `46ca8f3` test: Update trusted git root (MarcoFalke)
- #11995 `686cb86` depends: Fix Qt build with Xcode 9 (fanquake)
- #12636 `845838c` backport: #11995 Fix Qt build with Xcode 9 (fanquake)
- #12946 `e055bc0` depends: Fix Qt build with XCode 9.3 (fanquake)
- #12998 `7847b92` Default to defining endian-conversion DECLs in compat w/o config (TheBlueMatt)

### Tests and QA
- #12447 `01f931b` Add missing signal.h header (laanwj)
- #12545 `1286f3e` Use wait_until to ensure ping goes out (Empact)
- #12804 `4bdb0ce` Fix intermittent rpc_net.py failure. (jnewbery)
- #12553 `0e98f96` Prefer wait_until over polling with time.sleep (Empact)
- #12486 `cfebd40` Round target fee to 8 decimals in assert_fee_amount (kallewoof)
- #12843 `df38b13` Test starting bitcoind with -h and -version (jnewbery)
- #12475 `41c29f6` Fix python TypeError in script.py (MarcoFalke)
- #12638 `0a76ed2` Cache only chain and wallet for regtest datadir (MarcoFalke)
- #12902 `7460945` Handle potential cookie race when starting node (sdaftuar)
- #12904 `6c26df0` Ensure bitcoind processes are cleaned up when tests end (sdaftuar)
- #13049 `9ea62a3` Backports (MarcoFalke)
- #13201 `b8aacd6` Handle disconnect_node race (sdaftuar)

### Miscellaneous
- #12518 `a17fecf` Bump leveldb subtree (MarcoFalke)
- #12442 `f3b8d85` devtools: Exclude patches from lint-whitespace (MarcoFalke)
- #12988 `acdf433` Hold cs_main while calling UpdatedBlockTip() signal (skeees)
- #12985 `0684cf9` Windows: Avoid launching as admin when NSIS installer ends. (JeremyRand)

### Documentation
- #12637 `60086dd` backport: #12556 fix version typo in getpeerinfo RPC call help (fanquake)
- #13184 `4087dd0` RPC Docs: `gettxout*`: clarify bestblock and unspent counts (harding)
- #13246 `6de7543` Bump to Ubuntu Bionic 18.04 in build-windows.md (ken2812221)
- #12556 `e730b82` Fix version typo in getpeerinfo RPC call help (tamasblummer)

Credits
=======

Thanks to everyone who directly contributed to this release:

- 251
- Ben Woosley
- Chun Kuan Lee
- David A. Harding
- e0
- fanquake
- Henrik Jonsson
- JeremyRand
- Jesse Cohen
- John Newbery
- Johnson Lau
- Karl-Johan Alm
- Luke Dashjr
- MarcoFalke
- Matt Corallo
- Pieter Wuille
- Suhas Daftuar
- Tamas Blummer
- Wladimir J. van der Laan

As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).


Note this thread will be self-moderated to keep out the spam that usually appears in these release announcement threads.

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[jnano]

Too bad #11658 didn't make it into this version.

[achow101]

Too bad #11658 didn't make it into this version.

That isn't a bug fix or a critical change, so it isn't eligible for a minor release anyways.

[Icon]

Too bad #11658 didn't make it into this version.

That isn't a bug fix or a critical change, so it isn't eligible for a minor release anyways.

"This is a new major version release, including new features, various bugfixes
and performance improvements, as well as updated translations."


So which is it major or minor release?

Icon

[jnano]

That isn't a bug fix or a critical change, so it isn't eligible for a minor release anyways.

Oh, right. It is a bug of sorts, but yeah, not in the strictest sense of the word.

"This is a new major version release, including new features, various bugfixes
and performance improvements, as well as updated translations."

So which is it major or minor release?

That's a bug in the release notes. To be fixed in 0.16.2.

[Lutpin]

"This is a new major version release, including new features, various bugfixes
and performance improvements, as well as updated translations."
So which is it major or minor release?

That's a typo/mistake, it's a minor release (0.16.X), the next major release would be 0.17.0

[DireWolfM14]

Pardon my ubernoobiness, but what is this for?

I have plenty of room on my mining rig's D drive, should I install it there?  If it's adventitious to the community, I'm happy to help.

[achow101]

Pardon my ubernoobiness, but what is this for?

I have plenty of room on my mining rig's D drive, should I install it there?  If it's adventitious to the community, I'm happy to help.

Bitcoin Core is a full node software that powers the Bitcoin network. It receives, verifies, and relays all blocks and transactions broadcast to the Bitcoin network. It is also a wallet software.

[DireWolfM14]

Pardon my ubernoobiness, but what is this for?

I have plenty of room on my mining rig's D drive, should I install it there?  If it's adventitious to the community, I'm happy to help.

Bitcoin Core is a full node software that powers the Bitcoin network. It receives, verifies, and relays all blocks and transactions broadcast to the Bitcoin network. It is also a wallet software.

Thank you for the explanation.  Would it be of any help if I load it on my GPU mining machine?  I have an off-line machine I use to generate wallets, so I wouldn't be using it for that.

[achow101]

Thank you for the explanation.  Would it be of any help if I load it on my GPU mining machine?  I have an off-line machine I use to generate wallets, so I wouldn't be using it for that.

Help in what way? By running Bitcoin Core on any machine, you are helping the Bitcoin network.

[DireWolfM14]

Thank you for the explanation.  Would it be of any help if I load it on my GPU mining machine?  I have an off-line machine I use to generate wallets, so I wouldn't be using it for that.

Help in what way? By running Bitcoin Core on any machine, you are helping the Bitcoin network.

@ achow101
That's the answer I was looking  for,  I was wondering if it would help the network at all.  Thanks, I'll install it on at least one on-line machine this weekend.  And sorry for being such a noob that I drew the ire of so many wise-cracking burner accounts. 

[ajpandey]

Thank you for the explanation.  It is really helps for the ones who are interested in Learning about Bitcoins. Am interested in Learning about bitcoin and Crypto trading, So I think this forum would be a great resource for me.

[astralliam]

What would happen if all work stopped on bitcoin core? I can see why some altcoin projects need lots of development but bitcoin users don't see any difference from how it was years ago.

[RGBKey]

What would happen if all work stopped on bitcoin core? I can see why some altcoin projects need lots of development but bitcoin users don't see any difference from how it was years ago.

The Bitcoin network and ecosystem are constantly evolving with new technology advances and threats. Halting development on the most used full node software could possibly open it up to security vulnerabilities, and would stop future improvements from being made.

[sahan sandeepa]

yes, bitcoin core version 0.16.1 officially released according to an announcement made June 15. This release includes various bugfixes and performance improvements and a lot more than previous bitcoin core client version. there is another important fact,  this upgrade only affected wallets which were created in 0.16 and later

[Drgxt]

How do I start the RPC server for a solo mining?
With the current config is not work, the TCP port does not open.

Code:

daemon=1
server=1
listen=1
rpcuser=user
rpcpassword=pass
rpcallowip=192.168.1.105
rpcport=9999

With the command line keys too.

[RGBKey]

How do I start the RPC server for a solo mining?
With the current config is not work, the TCP port does not open.

Code:

daemon=1
server=1
listen=1
rpcuser=user
rpcpassword=pass
rpcallowip=192.168.1.105
rpcport=9999

With the command line keys too.

Solo mining has not been profitable for a very long time. You will only waste electricity and decrease the life of your hardware by solo CPU mining.

If you're using core as a node to connect ASICs however, "port" will control which port is used for node connections. I'm not sure whether or not you're looking for that however. Could you provide more information?

[aliichaudhary]

That isn't a bug fix or a critical change, so it isn't eligible for a minor release anyways. But not in the strictest sense of the world.

[Agaguk24]

Was this new core version applied to Electrum wallet as well? I didn't see a new Electrum wallet version come out.

[OluseyiOba1]

"Wallets created in 0.16 and later are not compatible with versions prior to 0.16
and will not work if you try to use newly created wallets in older versions."

So what happens to assets in such wallets? Would they be lost or not?