Bitcoin Wiki - User contributions [en]

Bitcoin Core

2016-10-24T15:08:22Z

Sakamoto1255: /* Criticism */

'''Bitcoin Core''' (formerly '''Bitcoin-Qt''') is the third [[Bitcoin]] [[Clients|client]], developed by [[Wladimir J. van der Laan]] based on the original reference code by [[Satoshi Nakamoto]].<ref name="Bitcoin Client Software">{{cite web|title=Bitcoin Client Software|url=http://bitcoin.org/clients.html|publisher=Bitcoin.org|accessdate=21 October 2012|quote=The original software written by Satoshi Nakamoto, the project's founder.}}</ref><ref>http://gavintech.blogspot.co.uk/2012/03/full-disclosure-bitcoin-qt-on-windows.html, Full disclosure: Bitcoin-Qt on Windows vulnerability, 21st October 2012</ref><ref>http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-4682, Vulnerability Summary for CVE-2012-4682, 21st October 2012</ref> It has been bundled with [[bitcoind]] since version 0.5.<ref name="Bitcoin-Qt/Bitcoind Releases">{{cite web|title=Bitcoin-Qt/Bitcoind Releases|url=http://bitcoin.org/news.html|publisher=Bitcoin.org|accessdate=21 October 2012}}</ref> Bitcoin-Qt has been rebranded to '''[[Bitcoin Core]]''' since version 0.9.0 <ref name="Rebranding to Bitcoin Core">{{cite web|title=Bitcoin Core version 0.9.0 released|url=https://bitcoin.org/en/release/v0.9.0|publisher=Bitcoin.org|accessdate=19 March 2014}}</ref>.

==History==

Bitcoin Core can be used as a desktop client for regular payments or as a server utility for merchants and other payment services.

===Current version===
Source code (and build instructions for supported platforms) can be found at the [https://github.com/bitcoin/bitcoin Bitcoin GitHub page].

==Features==
* Compatibility with Linux (both GNOME and KDE), Mac OS X and Windows
* All functionality of the original wxWidgets client
* Asks for confirmation before sending coins
* CSV export of transactions
* Clearer transaction list with status icons and real-time filtering
* Progress bar on initial block download
* Languages: Dutch, English, German, Chinese and many more. Translations are being done by volunteers on [https://www.transifex.com/projects/p/bitcoin/ Transifex].
* Sendmany support in UI (send to multiple recipients in one transaction)
* Multiple [[Units|unit]] support, can show subdivided bitcoins (mBTC, µBTC) for users that like large numbers (only decimal units)
* Splash screen that details progress
* Debug window
* Payment requests (BIP 70)
* Coin control
* bitcoin-cli as a RPC client, instead of bitcoind executable functioning both as a server and as a RPC client

==Criticism==

===Sync time===
Bitcoin Core is often criticized for being slow in downloading and verifying the Bitcoin transaction database (the [[blockchain]]). The download may be quicker using the [https://bitcointalk.org/index.php?topic=145386.0 bootstrap method]. '''NOTE:''' As of version 0.10.0 it is now slower to download the blockchain via the torrent than it is to download the full blockchain through the P2P client.
Otherwise you can use some provider which allows you to download the full blockchain directory. (For example like [http://www.blockchaindownload.kr], or [http://en.blockchaindownload.nl])

===Bandwidth use===
It has also been criticized for "hogging" upload bandwidth when peers connect to download the blockchain (possible only when run with port 8333 accessible to outside connections).
This perceived "issue" has been [https://github.com/bitcoin/bitcoin/issues/273 discussed extensively on GitHub].
Most modern routers support quality-of-service that can be configured to properly share the internet connection across all services, and even deprioritise Bitcoin traffic.
Bitcoin Core includes a script for Linux to configure QoS on an individual host.<ref>https://github.com/bitcoin/bitcoin/tree/master/contrib/qos, Linux QoS bash script</ref>
Windows users can also use third-party software such as [http://seriousbit.com/netbalancer/ Netbalancer] to throttle the application's upload bandwidth and ensure that one has enough upload bandwidth available for regular computer and internet use to be unaffected.

===Lack of multiwallet support; node+wallet tied together===
Wallet management is also cumbersome. Unlike clients such as [[Armory]], [[MultiBit]], [[Electrum]] and others only one wallet at a time is supported, and its location is required to be the same as the blockchain storage, making it [[Securing_your_wallet#Making_a_secure_workspace|difficult to place the wallet on an encrypted drive]]. It is recommended to backup the wallet.dat file every 50 transactions, due to the way Bitcoin Core handles [[Change|change]].

==External Links==

* [https://bitcoin.org/en/download Download link at bitcoin.org]
* [https://bitcoin.org/en/version-history Version history]
* [https://bitcointalk.org/index.php?topic=15276.0 Forum thread] (includes screenshots)
* [https://github.com/bitcoin/bitcoin Current GitHub repository shared with bitcoind]

<references

/>

==See also==

* [[QBitcoin]]
* [[bitcoind]]

[[es:Bitcoin-Qt]]

[[Category:User Interfaces]]
[[Category:Frontends]]
[[Category:Free Software]]
[[Category:Open Source]]

{{Bitcoin Core documentation}}

Bitcoin Core

2016-10-24T15:07:33Z

Sakamoto1255: /* Sync time */

'''Bitcoin Core''' (formerly '''Bitcoin-Qt''') is the third [[Bitcoin]] [[Clients|client]], developed by [[Wladimir J. van der Laan]] based on the original reference code by [[Satoshi Nakamoto]].<ref name="Bitcoin Client Software">{{cite web|title=Bitcoin Client Software|url=http://bitcoin.org/clients.html|publisher=Bitcoin.org|accessdate=21 October 2012|quote=The original software written by Satoshi Nakamoto, the project's founder.}}</ref><ref>http://gavintech.blogspot.co.uk/2012/03/full-disclosure-bitcoin-qt-on-windows.html, Full disclosure: Bitcoin-Qt on Windows vulnerability, 21st October 2012</ref><ref>http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-4682, Vulnerability Summary for CVE-2012-4682, 21st October 2012</ref> It has been bundled with [[bitcoind]] since version 0.5.<ref name="Bitcoin-Qt/Bitcoind Releases">{{cite web|title=Bitcoin-Qt/Bitcoind Releases|url=http://bitcoin.org/news.html|publisher=Bitcoin.org|accessdate=21 October 2012}}</ref> Bitcoin-Qt has been rebranded to '''[[Bitcoin Core]]''' since version 0.9.0 <ref name="Rebranding to Bitcoin Core">{{cite web|title=Bitcoin Core version 0.9.0 released|url=https://bitcoin.org/en/release/v0.9.0|publisher=Bitcoin.org|accessdate=19 March 2014}}</ref>.

==History==

Bitcoin Core can be used as a desktop client for regular payments or as a server utility for merchants and other payment services.

===Current version===
Source code (and build instructions for supported platforms) can be found at the [https://github.com/bitcoin/bitcoin Bitcoin GitHub page].

==Features==
* Compatibility with Linux (both GNOME and KDE), Mac OS X and Windows
* All functionality of the original wxWidgets client
* Asks for confirmation before sending coins
* CSV export of transactions
* Clearer transaction list with status icons and real-time filtering
* Progress bar on initial block download
* Languages: Dutch, English, German, Chinese and many more. Translations are being done by volunteers on [https://www.transifex.com/projects/p/bitcoin/ Transifex].
* Sendmany support in UI (send to multiple recipients in one transaction)
* Multiple [[Units|unit]] support, can show subdivided bitcoins (mBTC, µBTC) for users that like large numbers (only decimal units)
* Splash screen that details progress
* Debug window
* Payment requests (BIP 70)
* Coin control
* bitcoin-cli as a RPC client, instead of bitcoind executable functioning both as a server and as a RPC client

==Criticism==

===Sync time===
Bitcoin Core is often criticized for being slow in downloading and verifying the Bitcoin transaction database (the [[blockchain]]). The download may be quicker using the [https://bitcointalk.org/index.php?topic=145386.0 bootstrap method]. '''NOTE:''' As of version 0.10.0 it is now slower to download the blockchain via the torrent than it is to download the full blockchain through the P2P client.
Otherwise you can use some provider which allows you to download full blockchain directory. (For example like [http://www.blockchaindownload.kr], or [http://en.blockchaindownload.nl]

===Bandwidth use===
It has also been criticized for "hogging" upload bandwidth when peers connect to download the blockchain (possible only when run with port 8333 accessible to outside connections).
This perceived "issue" has been [https://github.com/bitcoin/bitcoin/issues/273 discussed extensively on GitHub].
Most modern routers support quality-of-service that can be configured to properly share the internet connection across all services, and even deprioritise Bitcoin traffic.
Bitcoin Core includes a script for Linux to configure QoS on an individual host.<ref>https://github.com/bitcoin/bitcoin/tree/master/contrib/qos, Linux QoS bash script</ref>
Windows users can also use third-party software such as [http://seriousbit.com/netbalancer/ Netbalancer] to throttle the application's upload bandwidth and ensure that one has enough upload bandwidth available for regular computer and internet use to be unaffected.

===Lack of multiwallet support; node+wallet tied together===
Wallet management is also cumbersome. Unlike clients such as [[Armory]], [[MultiBit]], [[Electrum]] and others only one wallet at a time is supported, and its location is required to be the same as the blockchain storage, making it [[Securing_your_wallet#Making_a_secure_workspace|difficult to place the wallet on an encrypted drive]]. It is recommended to backup the wallet.dat file every 50 transactions, due to the way Bitcoin Core handles [[Change|change]].

==External Links==

* [https://bitcoin.org/en/download Download link at bitcoin.org]
* [https://bitcoin.org/en/version-history Version history]
* [https://bitcointalk.org/index.php?topic=15276.0 Forum thread] (includes screenshots)
* [https://github.com/bitcoin/bitcoin Current GitHub repository shared with bitcoind]

<references

/>

==See also==

* [[QBitcoin]]
* [[bitcoind]]

[[es:Bitcoin-Qt]]

[[Category:User Interfaces]]
[[Category:Frontends]]
[[Category:Free Software]]
[[Category:Open Source]]

{{Bitcoin Core documentation}}