Bitcoin Forum

Bitcoin Core version 0.10.1 is now available from:

https://bitcoin.org/bin/bitcoin-core-0.10.1/

This is a new minor version release, bringing bug fixes and translation
updates. It is recommended to upgrade to this version.

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).

Downgrade warning
------------------

Because release 0.10.0 and later makes use of headers-first synchronization and
parallel block download (see further), the block files and databases are not
backwards-compatible with pre-0.10 versions of Bitcoin Core or other software:

* Blocks will be stored on disk out of order (in the order they are
received, really), which makes it incompatible with some tools or
other programs. Reindexing using earlier versions will also not work
anymore as a result of this.

* The block index database will now hold headers for which no block is
stored on disk, which earlier versions won't support.

If you want to be able to downgrade smoothly, make a backup of your entire data
directory. Without this your node will need start syncing (or importing from
bootstrap.dat) anew afterwards. It is possible that the data from a completely
synchronised 0.10 node may be usable in older versions as-is, but this is not
supported and may break as soon as the older version attempts to reindex.

This does not affect wallet forward or backward compatibility.

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

This is a minor release and hence there are no notable changes.
For the notable changes in 0.10, refer to the release notes for the
0.10.0 release at https://github.com/bitcoin/bitcoin/blob/v0.10.0/doc/release-notes.md

0.10.1 Change log
=================

Detailed release notes follow. This overview includes changes that affect external
behavior, not code moves, refactors or string updates.

RPC:
- `7f502be` fix crash: createmultisig and addmultisigaddress
- `eae305f` Fix missing lock in submitblock

Block (database) and transaction handling:
- `1d2cdd2` Fix InvalidateBlock to add chainActive.Tip to setBlockIndexCandidates
- `c91c660` fix InvalidateBlock to repopulate setBlockIndexCandidates
- `002c8a2` fix possible block db breakage during re-index
- `a1f425b` Add (optional) consistency check for the block chain data structures
- `1c62e84` Keep mempool consistent during block-reorgs
- `57d1f46` Fix CheckBlockIndex for reindex
- `bac6fca` Set nSequenceId when a block is fully linked

P2P protocol and network code:
- `78f64ef` don't trickle for whitelisted nodes
- `ca301bf` Reduce fingerprinting through timestamps in 'addr' messages.
- `200f293` Ignore getaddr messages on Outbound connections.
- `d5d8998` Limit message sizes before transfer
- `aeb9279` Better fingerprinting protection for non-main-chain getdatas.
- `cf0218f` Make addrman's bucket placement deterministic (countermeasure 1 against eclipse attacks, see http://cs-people.bu.edu/heilman/eclipse/)
- `0c6f334` Always use a 50% chance to choose between tried and new entries (countermeasure 2 against eclipse attacks)
- `214154e` Do not bias outgoing connections towards fresh addresses (countermeasure 2 against eclipse attacks)
- `aa587d4` Scale up addrman (countermeasure 6 against eclipse attacks)
- `139cd81` Cap nAttempts penalty at 8 and switch to pow instead of a division loop

Validation:
- `d148f62` Acquire CCheckQueue's lock to avoid race condition

Build system:
- `8752b5c` 0.10 fix for crashes on OSX 10.6

Wallet:
- N/A

GUI:
- `2c08406` some mac specifiy cleanup (memory handling, unnecessary code)
- `81145a6` fix OSX dock icon window reopening
- `786cf72` fix a issue where "command line options"-action overwrite "Preference"-action (on OSX)

Tests:
- `1117378` add RPC test for InvalidateBlock

Miscellaneous:
- `c9e022b` Initialization: set Boost path locale in main thread
- `23126a0` Sanitize command strings before logging them.
- `323de27` Initialization: setup environment before starting QT tests
- `7494e09` Initialization: setup environment before starting tests
- `df45564` Initialization: set fallback locale as environment variable

Credits
=======

Thanks to everyone who directly contributed to this release:

- Alex Morcos
- Cory Fields
- dexX7
- fsb4000
- Gavin Andresen
- Gregory Maxwell
- Ivan Pustogarov
- Jonas Schnelli
- Matt Corallo
- mrbandrews
- Pieter Wuille
- Ruben de Vries
- Suhas Daftuar
- Wladimir J. van der Laan

And all those who contributed additional code review and/or security research:
- 21E14
- Alison Kendler
- Aviv Zohar
- Ethan Heilman
- Evil-Knievel
- fanquake
- Jeff Garzik
- Jonas Nick
- Luke Dashjr
- Patrick Strateman
- Philip Kaufmann
- Sergio Demian Lerner
- Sharon Goldberg

As well as everyone that helped translating on Transifex - https://www.transifex.com/projects/p/bitcoin/

Is it recommended to delete your blockchain and download a fresh one even if it works just ok with your current one? It would be pretty annoying since it's very slow to download the whole thing, but even then, im pretty paranoid and i want a correctly working blockchain.

Great! I didn't upgrade to 0.10.0, but after no serious problems reported with 0.10.0 and these fixes I now feel the urge to do it. :)


I don't think so. Why should you? What I understand is that blockchain issues should only be expected when downgrading.

Great, hopefully this version will fix the problem where my Core closes randomly with no error and nothing shown in the logs.

when i have downloaded this new version it started reindexing whole blockchain, it there any option to stop reindexing

If its reindexing its because it needs to rebuild the index from the block files in order to work properly. You can stop it by closing the client, but you wont be able to use it without it finishing first.

btw: I did not have any problem when updating.

So apparently this was a bug indeed: https://bitcointalk.org/index.php?topic=944369.0 :) Glad it was fixed

awsome, i think its better now , bugs are fixed, liked the wroked done keep it up 8) 8)

nothing changed on my side, 0.1 was wokring flawless, i think that some bugs are not only client related, in the sense that they come out with a bad os configuration/corrupted os

You were right, had 0.10.1 close itself silently on me today.

I haven't noticed much difference from the update though  >:(

Awesome, will have to upgrade soon  ;)

 ::) am still sync it on my networks waiting how does it works ;D

You may upgrade since the users I have discussed it with reported no serious problems and I neither experienced such thing. If the previous version works well at you, why would you not upgrade? And if the previous version was bugged at you, the new one may solve your problems. Anyway, enjoy and feel free to write a feedback how the process went! It was just fine at me.

Upgrading  :)

Having a build issue on Debian Squeeze-LTS:

Wish me luck about to try!! :D will update

Hi, i'm new around here, i was wondering if using wallets that don't require downloading the whole blockchain (multibit) is less safe than Bitcoin Core.

No. SPV clients that allow you control over your private keys (like Multibit or Electrum) are for all general purposes as safe as a full node.

updating, give feedback later. Hope, all bugs issue are solved.

I don't know why but BC 0.10.1 is slower than BC 0.10.0 on my computer ....

Maybe I will downgrade ..

I keep receiving "fatal errors" and the log shows db corruption.  I uninstalled 0.10.1 this morning, deleted the blockchain, reinstalled, and am now re-indexing.  Hopefully that clears it up.

The same for me, i'm going to downgrade this evening!

Join the downgrade party!!  ;D

v10.2 rc1 is ready for the beta user ...  ;)

even with this version, there is still the problem of the synching hanging there sometimes for too much time, is this just a node releated issue? or something wrong with the client?

Updated Today. So far all went smooth...I really hope all bugs had been solved.

https://bitcoin.org/bin/bitcoin-core-0.10.2/

bitcoin core v0.10.2 FiNAL is here (without beta indicator  :D )
now, it's serious !  ;D

http://media.tumblr.com/0bdbb5dcbc234e280b94476f7cd90f7e/tumblr_inline_mi8pklhQLN1qz4rgp.gif

So far with v.10 and v.10.1 I've had to resync the entire blockchain.  I bet with v.10.2 I'll be doing it yet again...  ::)

i'm directly go from 0.9.1 to 0.10.2 without any problem or resync. (yes, i read my debug.log).

wow ! its good to know that bitcoin core has an ugrade too.
further upgrading will lead to a beautiful life. bitcoin is wonderful. its a great way to help people, to earn  income etc..
people should use it more and more.

Same here

If i'm upgrading from v0.9.3 upto 0.10.2 will i have to re-download the whole blockchain again?

No.

very nice information comes
that new version release

Dear All

How Long does it taks to downlaod the whole blockchain. My sync is running since 5 days.

Kind regards Patrick

Excellent :) All upgraded without any issues, with all the hoo haa in this thread i wasnt sure what to expect :)


How fast are you downloading it? its about 47GB...

Did you fix that?
I have the same problem on CentOS 6 with 0.10.2:
util.cpp:729: error: ‘imbue’ is not a member of ‘boost::filesystem::path’

Could someone explain a bit more about it please, and if you can from the  oldest release, thank you very much.

https://en.bitcoin.it/wiki/Bitcoin_Core
https://bitcoin.org/en/version-history

Great! thanks for sharing such a nice information.

Hi, my performance is still extremely poor. I've got a good laptop (i5, 4GB Ram) and it takes ages to load the wallet, then more to sync. It sometimes gets stuck and doesn't download any new block even if I got like 10 peers, so I have to restart it. the .exe is whitelisted on my AV/Firewall.
What can I do to improve performance?

Yes thanks for sharing hopefully I will like this better.

Fabulous! thanks for sharing, nice information.

IF I only new how bitcoin works :(

Wish me luck about to try!!

thank you for sharing this information.
your thread helping me so much.
i will try it.

Thank you dear :)

Happy to hear it  ;D
As per my study :
In previous version Blocks will be stored on disk out of order (in the order they are received, really), which makes it incompatible with some tools.
where as in new version block use headers-first synchronization method.The block index database will now hold headers for which no block is stored on disk. ;D :)

bitcoin world has been moving so fast that bitcoin core is in subversion under 1 - 0.10.1 but blockchain 2.0 is taking shape :)

Do you think there ever will be a Bitcoin Core 1.0? I think it might go as long as "Bitcoin Core 1.0 beta"  ;)

I was using old version of Bitcoin Core, today I wanted to update it to ver. 0.10.2. I downloaded installer and copied files to my old BitcoinCore folder to replace them, but now I am stuck on "block verification x%" even though I have blockchain updated. Is this normal?

Edit: Apparently this procedure was meant to check existing blockchain, not download it from the scratch. It last for couple minutes and everything is fine as far as I can tell.

Hello, since the earlier today fork event, and the scary warning i got on the core wallet, i decide to update.

I was using 0.8.6, uninstalled, installed the win64 bit version 0.10.2 with the installer, and the weird thing is that it didn't reindex anything.
only did a very fast check that probably take like 30 seconds, and start updating blocks.

How can I know if its ok?.

it seems fully updated to me but if there is a way to check it would be great.

I am runing it on a big ass server with 15K sas drives and xeon processors so a reindex probably will not take much on this machine, but at least i was expecting, i don't know, 5 minutes, but not 30 seconds

Thats somewhat expected. The new software is still using the exact same data in a very similar way. There is no reason to rebuild the database or redownload the blockchain.


It was probably just catching up on the missing blocks. You can do a manual reindex if that calms you down. Launch as normal but add -reindex.

E.g. Linux:

bitcoin-cli -reindex from terminal

Windows:

Win + R (for run dialog)
enter c:\Program Files\Bitcoin\bitcoin-qt.exe -reindex
"ok"

Thank you shorena  :)
if you say it's normal, i'm cool  ;D

bitcoin is a payment system through which you can transact funds without any intermediary.... you can search and lean more about it on google.... there are many ways to earn and spend bitcoin..... it is very versatile in nature all though....

Awesome !!