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Abroad Study Loan
Forum: Mining Tips and Hints
Last Post: vishal1
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Malaysia visa
Forum: Welcome
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12-10-2018, 12:07 PM
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Chances of different bloc...
Forum: Mining Tips and Hints
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12-06-2018, 05:43 PM
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How asic miners work
Forum: Bitcoin Discussion
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12-04-2018, 02:38 PM
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How to Install CANNABISCO...
Forum: Altcoin Discussion
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11-09-2018, 09:18 PM
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update s9 miner speed
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11-08-2018, 05:11 PM
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Introductions
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Is Crypto Investment is b...
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  Abroad Study Loan
Posted by: vishal1 - Yesterday, 07:06 AM - Forum: Mining Tips and Hints - No Replies

Don’t let your financial situation come in the way of your education goals and building a secure future to study abroad. Reach out to us and we will help you find a solution that will take you closer to fulfilling your dreams! Abroad Study Loan

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  Malaysia visa
Posted by: grita0327 - 12-10-2018, 12:07 PM - Forum: Welcome - No Replies

Malaysia Visa for Indians - Apply online and get Malaysia e Visa at just Rs.1,899. To know more about Malaysia visa fees & online application process click here!

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  Chances of different block percentages
Posted by: mjstrand - 12-06-2018, 05:43 PM - Forum: Mining Tips and Hints - No Replies

In case you ever wonder about what the odds are for getting a certain percentage block, the following may help.

Code:
0.39346934028737   50.000%  1 in 1.6
0.63212055882856  100.000%  1 in 2.7
0.77686983985157  150.000%  1 in 4.5
0.86466471676339  200.000%  1 in 7.4
0.95021293163214  300.000%  1 in 20.1
0.98168436111127  400.000%  1 in 54.6
0.99326205300091  500.000%  1 in 148.4
0.99752124782333  600.000%  1 in 403.4
0.99872735771441  666.666%  1 in 785.8
0.99908811803445  700.000%  1 in 1096.6
0.99966453737210  800.000%  1 in 2981.0
0.99987659019591  900.000%  1 in 8103.1
0.99999385578765  1200.000%  1 in 162754.8
0.99999998477002  1800.000%  1 in 65659969.2
0.99999999996225  2400.000%  1 in 26489113602.6
1.00000000000000  3600.000%  1 in 4503599627370496.0

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  How asic miners work
Posted by: mjstrand - 12-04-2018, 02:38 PM - Forum: Bitcoin Discussion - No Replies

Here is a Kano Asic Document that describes how asic's work and also how the AB midstate process works.  It is also stored here.

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  update s9 miner speed
Posted by: mjstrand - 11-08-2018, 05:11 PM - Forum: Mining Tips and Hints - No Replies

If you want to try to update your s9i to go faster (likely will void warranty), go to service.bitmain.com/support/download.  Find the S9 on the left and click on firmware.  Download Antminer-S9-all-201705031838-650M-user-Update2UBI-NF.tar.gz and also Antminer-S9-LPM-20181102.tar.gz.  open up the s9 web interface by typing the ip address in your web browser.  Click on System, Upgrade.  On the bottom is the "Flash new firmware image".  Click browse and select the first tar.gz (has 650M in the filename).  Click Flash image and wait.  This resets everything including the ip address so you will have to find the new ip address again (as you did when you first bought it).  Note that it will also start mining for bitmain with these settings.  Go to Miner Configuration and reset your pools.  On the top url, change the minerConfiguration to minerAdvanced and open that page.  You should see frequencies that you can play around with (defaults to 650).  Dont go over 700 right away with a 1600 watt power supply.  Once you have these setup, go back to System, Upgrade and browse to the second .tar.gz file you downloaded and click flash image.  Once it reboots, you will be in lpm mode and you can play with the frequency

If you don't know your pool info, make sure you go to miner / configuration before you flash the firmware

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  CK Building Material Co.,Ltd
Posted by: lyy150a - 10-22-2018, 12:17 AM - Forum: Marketplace - No Replies

CK Building Material Co.,Ltd, is a industry’s leading manufacture of building materials, such as glass mosaic, glass window, glass dome, murals, etc. 
It was founded in Guangdong,China in 2006 , For over 11 years, We has been shipped and sold around the world, also we have grown our producing technical, product offering ability and service to become one of the largest building material factory in the nation.
CK knows how valuable your time is, that is why we pride ourselves on doing all we can to operate on your timeline, not ours. To serve you better, many of our dedicated employees have full experience and know the concrete industry and the demands that customers needed.
Whether you are looking for something contemporary to work with your home, or something a little warmer and more traditional, you are at the right place for your home decoration materials of all styles and finishes.
We hold the exhibition every year in China and Overseas. 
CK can offer OEM and ODM services as well.We also have professional designer department, export department.So customer can enjoy the factory price with professional export services.
http://www.ck-building.com

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  preCharge World Forum
Posted by: tasmin22 - 10-17-2018, 09:39 AM - Forum: Marketplace - No Replies

preCharge is the wallet of the future. Secure and free of charge. Instant transferring. Using the preCharge debitcard is so easy because its a contactless transactions means..just a simple tap and its done.No worries because its pre charge means its loaded up..thats why its preCharge. Get ur own wallet now. https://precharge.world/

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  How to Install CANNABISCOIN-QT on Ubuntu
Posted by: mjstrand - 10-12-2018, 01:33 PM - Forum: Altcoin Discussion - Replies (1)

The following was copied from https://bitcointalk.org/index.php?topic=...sg10421829

#####################################################
#
# This file contains the sequence for building CannabisCoin wallets on
# ubuntu systems. Builds were successfully completed on Ubuntu LTS
# versions 12.04.5 and 14.04.1; Linux Mint 17.1.
#
# Comments are particularly verbose in an effort to ease newcomers into building
# their own secure wallets on linux systems.
#
# While this file could easily be converted into a shell script please do not do so.
# Some commands must be run as root, most should not. Compile times will cause
# sudo permission sessions to expire, or at least they should and the script will fail.
#
# Commands are written here to be copied and pasted into a terminal session.
# Lines beginning with "#", like this one, are comments to help you understand
# the commands you are about to execute.
#
# Sometimes more than one command is included per line, joined with "&&", this
# is simply to reduce the number of times users need to copy and paste commands.
#
# Good luck and may the source be with you
#
#####################################################

# Open a terminal - Ubuntu users can simply press control-alt-t
#
# Now, everyone ready? Fine, let's begin. This is where we start adding software
# so we can build our lovely fresh and known clean CannabisCoin Qt wallet.
#
# Select and copy the listed commands and paste them into the terminal - then
# press the enter or return key to execute the command. Your prompt will
# not return until the commands have completed execution so just wait for them.
#
# Tip: you can paste into the terminal either via the keyboard with shift-ctrl-v
# or with right-click => paste.

# Be tidy - make a home for our source code and move to that directory

Code:
mkdir src && cd src


# We are going to add a bitcoin repository to grab the required version of BerkeleyDB

Code:
sudo add-apt-repository -y ppa:bitcoin/bitcoin && sudo apt-get update


# Download and install required packages. The next block of text is a single command
# so make sure you copy all of it from "sudo" to "libqrencode-dev"

Code:
sudo apt-get -y install build-essential git qt4-qmake libqtcore4 libqtgui4 libqt4-dev libboost-dev libboost-system-dev libboost-filesystem-dev libboost-program-options-dev libboost-thread-dev libssl-dev libdb4.8++-dev libminiupnpc-dev libqrencode-dev


# A lot of things will scroll by as the package manager installs what we just asked
# it to - that is what we want and expect to happen.


# Download the wallet source code

Code:
git clone https://github.com/cannabiscoindev/cannabiscoin420


# Move to the correct directory to compile our wallet

Code:
cd cannabiscoin420


# Now we set our desired options and generate the makefile, which is the instruction
# set for the compiler.

# To use UPnP for port forwarding behind a NAT router (recommended, as more connections
# overall allow for a faster and more stable user experience) set USE_UPNP=1

# USE_UPNP=0 to compile support for port forwarding but have it turned off by default, users can turn on in wallet options.

# USE_UPNP=- to compile without UPnP support, not sure why you'd do that.

# Notification support for recent Ubuntu family desktops is provided with USE_DBUS=1.

# QR codes are enabled with USE_QRCODE=1, USE_QRCODE=0 to compile without QR code support.

# Because we are linking against a specific BerkelyDB version we will use
# BDB_LIB_SUFFIX=-4.8

# The following should be completely safe as is or you can change the following command
# to suit your desired options.

Code:
qmake USE_UPNP=1 USE_QRCODE=1 USE_DBUS=1 BDB_LIB_SUFFIX=-4.8


# Now that our makefile has been written for us we simply execute the make command
# to build our CannabisCoin wallet

Code:
make


# When your prompt returns you know it worked or it will tell you if not.
# We'll move the executable to a directory on the path so we can run it at will

Code:
sudo mv CannabisCoin-qt /usr/bin


# We should just make our new wallet welcome

Code:
mkdir ~/.CannabisCoin && mv cannabiscoin.conf ~/.CannabisCoin


# Optionally we can add even more nodes to those originally listed in the config file,
# although the wallet will connect perfectly well without them. These last 3 were not
# included in the original file - as before copy and paste the whole text block:

Code:
echo "addnode=seed4.cannabiscoin.net" >> ~/.CannabisCoin/cannabiscoin.conf && echo "addnode=seed5.cannabiscoin.net" >> ~/.CannabisCoin/cannabiscoin.conf && echo "addnode=cann.cryptoservices.net" >> ~/.CannabisCoin/cannabiscoin.conf


# Also optional, the following command will place a shortcut link on the desktop. If
# you prefer you can simply open a terminal and type CannabisCoin-qt at the command
# prompt to run your CannabisCoin wallet at any time.

Code:
ln -s /usr/bin/CannabisCoin-qt ~/Desktop


# If you have started your wallet please stop it now - we are going to speed up the
# block chain sync by importing a bootstrap file.


#########################################
#
# I hate this section - users should not be downloading anything from a random like me!
#
# Please note that the same bootstrap.dat file is available from CannabisCoin's
# core developer, Esotericism, via bittorrent - if you are comfortable with
# torrents the address is
# https://kickass.to/cannabiscoin-bootstra...79152.html
#Update: That torrent is an old version of the bootstrap file - the link has been updated in the download link below
#
# That said, you are still following a link from a forum post, so...
#
########################################

# We will now download a bootstrap file. Its purpose is to dramatically speed up
# synchronisation of the wallet block chain by providing a local source of blocks
# up to January 23, 2015. You don't have to do so but you'll be glad if you do.

# We will use our browser to download the bootstrap file from mega. The
# default browser on Ubuntu is Firefox.

# Please open your web browser and paste in the following link, click the download
# button when it is offered. The file will download to your Downloads folder by
# default. Paste in ALL of it, not just the "https://mega.co.nz/#!PZwzDLjR!" part.

Code:
https://mega.co.nz/#!PZwzDLjR!YBVtMBegci1-o2z9d5_m69EhQ3fobkl77CLNDE0PcA0


# After it finishes downloading we'll move it to where we want it and unpack it
# with the next two commands.

Code:
mv ~/Downloads/bootstrap.dat.845K.zip ~/.CannabisCoin

Code:
cd ~/.CannabisCoin && unzip bootstrap.dat.845K.zip && cd


# Now that we no longer need our downloaded zip file we can remove it.

# Optional

Code:
rm ~/.CannabisCoin/bootstrap.dat.845K.zip


# OK, all being well we can now sync CannabisCoin so either click your desktop shortcut
# or execute the following command in the terminal.

# Tip: if you do run from the terminal open another terminal window so you can proceed
# while the wallet is running - the prompt won't return to the 1st terminal instance
# until the initiated process finishes, that means until you close your CANN-qt wallet.

Code:
CannabisCoin-qt


# Depending on the speed of your computer syncing the blockchain could take some time.

# Tests run on a virtual machine hosted on a 2009-vintage core2 duo permitted just one
# cpu took more than 3 hours to complete.

# If you wish to save drive space you may remove the entire src directory we made
# earlier, which will remove no-longer required source code for CannabisCoin.

# Optional

Code:
rm -Rf ~/src


# After updating is complete we can ditch the now-redundant bootstrap file, which
# the wallet renamed .old when it was finished with it.
#
# Note that if you decide at some later date that you want/need to download the
# blockchain afresh you can simply rename bootstrap.dat.old bootstrap.dat and
# it will be used by the wallet as before.

# Optional

Code:
rm ~/.CannabisCoin/bootstrap.dat.old

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  Avalon 741s W/PSU
Posted by: Encoremining - 10-06-2018, 02:04 PM - Forum: Marketplace - No Replies

I am upgrading my farm and need to get rid of my 741s to make room. 
5 741s W/ 1200 watt PSUs $1000
Ready to hash.

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  Setting up a full node on Ubuntu
Posted by: mjstrand - 10-04-2018, 04:34 PM - Forum: Mining Tips and Hints - No Replies

What Is A Full Node? - repeated from https://bitcoin.org/en/full-node#blocks-only-mode

A full node is a program that fully validates transactions and blocks. Almost all full nodes also help the network by accepting transactions and blocks from other full nodes, validating those transactions and blocks, and then relaying them to further full nodes.
Most full nodes also serve lightweight clients by allowing them to transmit their transactions to the network and by notifying them when a transaction affects their wallet. If not enough nodes perform this function, clients won’t be able to connect through the peer-to-peer network—they’ll have to use centralized services instead.
Many people and organizations volunteer to run full nodes using spare computing and bandwidth resources—but more volunteers are needed to allow Bitcoin to continue to grow. This document describes how you can help and what helping will cost you.

Costs And Warnings
Running a Bitcoin full node comes with certain costs and can expose you to certain risks. This section will explain those costs and risks so you can decide whether you’re able to help the network.

Special Cases
Miners, businesses, and privacy-conscious users rely on particular behavior from the full nodes they use, so they will often run their own full nodes and take special safety precautions. This document does not cover those precautions—it only describes running a full node to help support the Bitcoin network in general.
Please seek out assistance in the community if you need help setting up your full node correctly to handle high-value and privacy-sensitive tasks. Do your own diligence to ensure who you get help from is ethical, reputable and qualified to assist you.

Secure Your Wallet
It’s possible and safe to run a full node to support the network and use its wallet to store your bitcoins, but you must take the same precautions you would when using any Bitcoin wallet. Please see the securing your wallet page for more information.
Minimum Requirements
Bitcoin Core full nodes have certain requirements. If you try running a node on weak hardware, it may work—but you’ll likely spend more time dealing with issues. If you can meet the following requirements, you’ll have an easy-to-use node.

  • Desktop or laptop hardware running recent versions of Windows, Mac OS X, or Linux.
  • 145 gigabytes of free disk space, accessible at a minimum read/write speed of 100 MB/s.
  • 2 gigabytes of memory (RAM)
  • A broadband Internet connection with upload speeds of at least 400 kilobits (50 kilobytes) per second
  • An unmetered connection, a connection with high upload limits, or a connection you regularly monitor to ensure it doesn’t exceed its upload limits. It’s common for full nodes on high-speed connections to use 200 gigabytes upload or more a month. Download usage is around 20 gigabytes a month, plus around an additional 140 gigabytes the first time you start your node.
  • 6 hours a day that your full node can be left running. (You can do other things with your computer while running a full node.) More hours would be better, and best of all would be if you can run your node continuously.
    Note: many operating systems today (Windows, Mac, and Linux) enter a low-power mode after the screensaver activates, slowing or halting network traffic. This is often the default setting on laptops and on all Mac OS X laptops and desktops. Check your screensaver settings and disable automatic “sleep” or “suspend” options to ensure you support the network whenever your computer is running.
Possible Problems
  • Legal: Bitcoin use is prohibited or restricted in some areas.
  • Bandwidth limits: Some Internet plans will charge an additional amount for any excess upload bandwidth used that isn’t included in the plan. Worse, some providers may terminate your connection without warning because of overuse. We advise that you check whether your Internet connection is subjected to such limitations and monitor your bandwidth use so that you can stop Bitcoin Core before you reach your upload limit.
  • Anti-virus: Several people have placed parts of known computer viruses in the Bitcoin block chain. This block chain data can’t infect your computer, but some anti-virus programs quarantine the data anyway, making it more difficult to run Bitcoin Core. This problem mostly affects computers running Windows.
  • Attack target: Bitcoin Core powers the Bitcoin peer-to-peer network, so people who want to disrupt the network may attack Bitcoin Core users in ways that will affect other things you do with your computer, such as an attack that limits your available download bandwidth.
Initial Block Download(IBD)
Initial block download refers to the process where nodes synchronize themselves to the network by downloading blocks that are new to them. This will happen when a node is far behind the tip of the best block chain. In the process of IBD, a node does not accept incoming transactions nor request mempool transactions.
If you are trying to set up a new node following the instructions below, you will go through the IBD process at the first run, and it may take a considerable amount of time since a new node has to download the entire block chain (which is roughly 140 gigabytes now). During the download, there could be a high usage for the network and CPU (since the node has to verify the blocks downloaded), and the client will take up an increasing amount of storage space (reduce storage provides more details on reducing storage).
Before the node finishes IBD, you will not be able to see a new transaction related to your account until the client has caught up to the block containing that transaction. So your wallet may not count new payments/spendings into the balance.
If you are using Bitcoin Core GUI, you can monitor the progress of IBD in the status bar (left bottom corner).
[Image: en-bitcoin-qt-ibd.png?1538575559]
Linux Instructions
The following instructions describe installing Bitcoin Core on Linux systems.
Ubuntu 16.04
*Instructions for Bitcoin Core 0.14.2
If you use Ubuntu Desktop, click the Ubuntu swirl icon to start the Dash and type “term” into the input box. Choose any one of the terminals listed:
[Image: en-dash-term.png?1538575559]
Alternatively, access a console or terminal emulator using another method, such as SSH on Ubuntu Server or a terminal launcher in an alternative desktop environment.
Type the following line to add the Bitcoin Personal Package Archive (PPA) to your system:
Code:
sudo apt-add-repository ppa:bitcoin/bitcoin
You will be prompted for your user password. Provide it to continue. Afterwards, the following text will be displayed:
Code:
Stable Channel of bitcoin-qt and bitcoind for Ubuntu, and their
dependencies

Note that you should prefer to use the official binaries, where possible, to
limit trust in Launchpad/the PPA owner.

No longer supports precise, due to its ancient gcc and Boost versions.
More info: https://launchpad.net/~bitcoin/+archive/ubuntu/bitcoin
Press [ENTER] to continue or ctrl-c to cancel adding it
Press enter to continue. The following text (with some variations) will be displayed and you will be returned to the command line prompt:
Code:
gpg: keyring `/tmp/tmpixuqu73x/secring.gpg' created
gpg: keyring `/tmp/tmpixuqu73x/pubring.gpg' created
gpg: requesting key 8842CE5E from hkp server keyserver.ubuntu.com
gpg: /tmp/tmpixuqu73x/trustdb.gpg: trustdb created
gpg: key 8842CE5E: public key "Launchpad PPA for Bitcoin" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
OK
Type the following line to get the most recent list of packages:
Code:
sudo apt-get update
A large number of lines will be displayed as different update files are downloaded. This step may take several minutes on a slow Internet connection.
To continue, choose one of the following options
  1. To install the Bitcoin Core Graphical User Interface (GUI), type the following line and proceed to the Bitcoin Core GUI section below:
    sudo apt-get install bitcoin-qt
  2. To install the Bitcoin Core daemon (bitcoind), which is useful for programmers and advanced users, type the following line and proceed to the Bitcoin Core Daemon section below:
    sudo apt-get install bitcoind
  3. To install both the GUI and the daemon, type the following line and read both the GUI instructions and the daemon instructions. Note that you can’t run both the GUI and the daemon at the same time using the same configuration directory.
    sudo apt-get install bitcoin-qt bitcoind
After choosing what packages to install, you will be asked whether you want to proceed. Press enter to continue.
Bitcoin Core GUI
To start Bitcoin Core GUI, click the Ubuntu swirl icon to open the Dash, type
Code:
bitcoin
, and click the Bitcoin icon.
[Image: en-dash-bitcoin-qt.png?1538575559]
You will be prompted to choose a directory to store the Bitcoin block chain and your wallet. Unless you have a separate partition or drive you want to use, click Ok to use the default.
[Image: en-bitcoin-qt-welcome.png?1538575559]
Bitcoin Core GUI will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time by closing it; it will resume from the point where it stopped the next time you start it.
[Image: en-bitcoin-qt-ibd.png?1538575559]
After download is complete, you may use Bitcoin Core as your wallet or you can just let it run to help support the Bitcoin network.
Optional: Start Your Node At Login
Starting your node automatically each time you login to your computer makes it easy for you to contribute to the network. The easiest way to do this is to tell Bitcoin Core GUI to start at login.
While running Bitcoin Core GUI, open the Settings menu and choose Options. On the Main tab, click Start Bitcoin on system login. Click the Ok button to save the new settings.
[Image: en-start-on-login.png?1538575559]
The next time you login to your desktop, Bitcoin Core GUI will be automatically started as an icon in the tray.
[Image: en-bitcoin-qt-tray-icon.png?1538575559]
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Bitcoin Core Daemon
If you’re logged in as an administrative user with sudo access, you may log out. The steps in this section should be performed as the user you want to run Bitcoin Core. (If you’re an expert administrator, you can make this a locked account used only by Bitcoin Core.)
From the terminal, type:
Code:
bitcoind -daemon
It will print a message that Bitcoin Core is starting. To interact with Bitcoin Core daemon, you will use the command
Code:
bitcoin-cli
(Bitcoin command line interface).
Note: it may take up to several minutes for Bitcoin Core to start, during which it will display the following message whenever you use
Code:
bitcoin-cli
:
Code:
error: {"code":-28,"message":"Verifying blocks..."}
After it starts, you may find the following commands useful for basic interaction with your node: [/url]
Code:
getblockchaininfo
,
Code:
getnetworkinfo
,
Code:
getnettotals
,
Code:
getwalletinfo
,
Code:
stop
, and
Code:
help
.
For example, to safely stop your node, run the following command:
Code:
bitcoin-cli stop
A complete list of commands is available in the Bitcoin.org developer reference.
When Bitcoin Core daemon first starts, it will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time using the
Code:
stop
command; it will resume from the point where it stopped the next time you start it.
Optional: Start Your Node At Boot
Starting your node automatically each time your computer boots makes it easy for you to contribute to the network. The easiest way to do this is to start Bitcoin Core daemon from your crontab. To edit your crontab, run the following command:
Code:
crontab -e
Scroll to the bottom of the file displayed and add the following line:
Code:
@reboot bitcoind -daemon
Save the file and exit; the updated crontab file will be installed for you. Now Bitcoin Core daemon will be automatically started each time your reboot your computer.
If you’re an Ubuntu expert and want to use an init script instead, see this Upstart script.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Other Linux Distributions
*Instructions for Bitcoin Core 0.14.2
The following instructions describe installing Bitcoin Core using tools available in most mainstream Linux distributions. We assume you use a Bourne-like shell such as
Code:
bash
.
Using any computer, go to the Bitcoin Core download page and verify you have made a secure connection to the server.
[Image: en-secure-connection.png?1538575559]
In the “Linux (tgz)” section of the Download page, choose the appropriate file for your Linux install (either 32-bit or 64-bit) and download the file. If necessary, move the file to the computer you want to use to run Bitcoin Core.
Optional: Verify the release signatures
If you know how to use PGP, you should also click the Verify Release Signatures link on the download page to download a signed list of SHA256 file hashes. The 0.11 and later releases are signed by Wladimir J. van der Laan’s releases key with the fingerprint:
Code:
01EA 5486 DE18 A882 D4C2  6845 90C8 019E 36C2 E964
Earlier releases were signed by Wladimir J. van der Laan’s regular key. That key’s fingerprint is:
Code:
71A3 B167 3540 5025 D447  E8F2 7481 0B01 2346 C9A6
Even earlier releases were signed by Gavin Andresen’s key. His primary key’s fingerprint is:
Code:
2664 6D99 CBAE C9B8 1982  EF60 29D9 EE6B 1FC7 30C1
You should verify these keys belong to their owners using the web of trust or other trustworthy means. Then use PGP to verify the signature on the release signatures file. Finally, use PGP or another utility to compute the SHA256 hash of the archive you downloaded, and ensure the computed hash matches the hash listed in the verified release signatures file.
If you aren’t already logged into the computer you want to install Bitcoin on, login now. Make sure you use an account that can use
Code:
su
or
Code:
sudo
to install software into directories owned by the root user.
If you logged in graphically, start a terminal. If you logged in another way, we will assume you’re already in a shell.
Locate the file you downloaded and extract it using the
Code:
tar
command followed by the argument
Code:
xzf
followed by the file name. The argument
Code:
xzf
means eXtract the gZipped tar archive File. For example, for a 64-bit tar archive in your current directory, the command is:
Code:
tar xzf bitcoin-0.14.2-x86_64-linux-gnu.tar.gz
This will create the directory
Code:
bitcoin-0.14.2
within your current working directory. We will install the contents of its
Code:
bin
subdirectory into the
Code:
/usr/local/bin
directory using the the
Code:
install
command. The install command is part of the GNU coreutils available on nearly every Linux distribution, and the
Code:
/usr/local/bin
directory is a standard location for self-installed executables (you may edit the commands below to use a different location).
If you use
Code:
sudo
to run commands as root, use the following command line:
Code:
sudo install -m 0755 -o root -g root -t /usr/local/bin bitcoin-0.14.2/bin/*
If you use
Code:
su
to run commands as root, use the following command line:
Code:
su -c 'install -m 0755 -o root -g root -t /usr/local/bin bitcoin-0.14.2/bin/*'
To continue, choose one of the following options
  1. To use Bitcoin Core Graphical User Interface (GUI), proceed to the Bitcoin Core GUI section below.
  2. To use the Bitcoin Core daemon (bitcoind), which is useful for programmers and advanced users, proceed to the Bitcoin Core Daemon section below.
  3. To use both the GUI and the daemon, read both the GUI instructions and the daemon instructions. Note that you can’t run both the GUI and the daemon at the same time using the same configuration directory.
Bitcoin Core GUI
In order to use Bitcoin Core GUI, you will need several libraries installed. All of them should be available in all major recently-released Linux distributions, but they may not be installed on your computer yet. To determine whether you’re missing any libraries, open a terminal (if you haven’t already) and run the command
Code:
/usr/local/bin/bitcoin-qt
to start Bitcoin Core GUI.
If all the required libraries are installed, Bitcoin Core will start. If a required library is missing, an error message similar to the following message will be displayed:
Code:
/usr/local/bin/bitcoin-qt: error while loading shared libraries: libQtGui.so.4: cannot open shared object file: No such file or directory
Search your distribution’s package database for the missing file missing and install package containing that file. Then re-run
Code:
/usr/local/bin/bitcoin-qt
to see if it’s missing another file. Repeat until Bitcoin Core GUI starts.
You will be prompted to choose a directory to store the Bitcoin block chain and your wallet. Unless you have a separate partition or drive you want to use, click Ok to use the default.
[Image: en-bitcoin-qt-welcome.png?1538575559]
Bitcoin Core GUI will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time by closing it; it will resume from the point where it stopped the next time you start it.
[Image: en-bitcoin-qt-ibd.png?1538575559]
After download is complete, you may use Bitcoin Core as your wallet or you can just let it run to help support the Bitcoin network.
Optional: Start Your Node At Login
Starting your node automatically each time you login to your computer makes it easy for you to contribute to the network. The easiest way to do this is to tell Bitcoin Core GUI to start at login. This only works in desktop environments that support the autostart specification, such as Gnome, KDE, and Unity.
While running Bitcoin Core GUI, open the Settings menu and choose Options. On the Main tab, click Start Bitcoin on system login. Click the Ok button to save the new settings.
[Image: en-start-on-login.png?1538575559]
The next time you login to your desktop, Bitcoin Core GUI should be automatically started as an icon in the tray.
[Image: en-bitcoin-qt-tray-icon.png?1538575559]
If Bitcoin Core GUI does not automatically start, you may need to add it to an
Code:
.xinit
or
Code:
.xsession
file as described here.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Bitcoin Core Daemon
If you’re logged in as an administrative user with sudo access, you may log out. The steps in this section should be performed as the user you want to run Bitcoin Core. (This can be a locked account used only by Bitcoin Core.) If you changed users in a graphical interface, start a terminal.
Type the following command:
Code:
bitcoind -daemon
It will print a message that Bitcoin Core is starting. To interact with Bitcoin Core daemon, you will use the command
Code:
bitcoin-cli
(Bitcoin command line interface).
Note: it may take up to several minutes for Bitcoin Core to start, during which it will display the following message whenever you use
Code:
bitcoin-cli
:
Code:
error: {"code":-28,"message":"Verifying blocks..."}
After it starts, you may find the following commands useful for basic interaction with your node:
Code:
getblockchaininfo
,
Code:
getnetworkinfo
,
Code:
getnettotals
,
Code:
getwalletinfo
,
Code:
stop
, and
Code:
help
.
For example, to safely stop your node, run the following command:
Code:
bitcoin-cli stop
A complete list of commands is available in the Bitcoin.org developer reference.
When Bitcoin Core daemon first starts, it will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time using the
Code:
stop
command; it will resume from the point where it stopped the next time you start it.
Optional: Start Your Node At Boot
Starting your node automatically each time your computer boots makes it easy for you to contribute to the network. The easiest way to do this is to start Bitcoin Core daemon from your crontab. To edit your crontab on most distributions, run the following command:
Code:
crontab -e
Scroll to the bottom of the file displayed and add the following line:
Code:
@reboot bitcoind -daemon
Save the file and exit; the updated crontab file will be installed for you. On most distributions, this will cause Bitcoin Core daemon to be automatically started each time your reboot your computer.
If you’re a expert system administrator and want to use an init script instead, see the init scripts directory in Bitcoin Core’s source tree.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Windows Instructions
Windows 10
*Instructions for Bitcoin Core 0.14.2 on Windows 10
Go to the Bitcoin Core download page and verify you have made a secure connection to the server.
[Image: en-win10-secure-connection.png?1538575559]
Click the large blue Download Bitcoin Core button to download the Bitcoin Core installer to your desktop.
Optional: Verify the release signatures
If you know how to use PGP, you should also click the Verify Release Signatures link on the download page to download a signed list of SHA256 file hashes. The 0.11 and later releases are signed by Wladimir J. van der Laan’s releases key with the fingerprint:
Code:
01EA 5486 DE18 A882 D4C2  6845 90C8 019E 36C2 E964
Earlier releases were signed by Wladimir J. van der Laan’s regular key. That key’s fingerprint is:
Code:
71A3 B167 3540 5025 D447  E8F2 7481 0B01 2346 C9A6
Even earlier releases were signed by Gavin Andresen’s key. His primary key’s fingerprint is:
Code:
2664 6D99 CBAE C9B8 1982  EF60 29D9 EE6B 1FC7 30C1
You should verify these keys belong to their owners using the web of trust or other trustworthy means. Then use PGP to verify the signature on the release signatures file. Finally, use PGP or another utility to compute the SHA256 hash of the archive you downloaded, and ensure the computed hash matches the hash listed in the verified release signatures file.
After downloading the file to your desktop or your Downloads folder (
Code:
C:\Users\<YOUR USER NAME>\Downloads
), run it by double-clicking its icon. Windows will ask you to confirm that you want to run it. Click Yes and the Bitcoin installer will start. It’s a typical Windows installer, and it will guide you through the decisions you need to make about where to install Bitcoin Core.
[Image: en-win10-installer-start.png?1538575559]
To continue, choose one of the following options
  1. If you want to use the Bitcoin Core Graphical User Interface (GUI), proceed to the Bitcoin Core GUI section below.
  2. If you want to use the Bitcoin Core daemon (bitcoind), which is useful for programmers and advanced users, proceed to the Bitcoin Core Daemon section below.
  3. If you want to use both the GUI and the daemon, read both the GUI instructions and the daemon instructions. Note that you can’t run both the GUI and the daemon at the same time using the same configuration directory.
Bitcoin Core GUI
Press the Windows key (
Code:
⊞ Win
) and start typing “bitcoin”. When the Bitcoin Core icon appears (as shown below), click on it.
[Image: en-win10-start-bitcoin-core.png?1538575559]
You will be prompted to choose a directory to store the Bitcoin block chain and your wallet. Unless you have a separate partition or drive you want to use, click Ok to use the default.
[Image: en-win10-welcome-to-bitcoin-core.png?1538575559]
Your firewall may block Bitcoin Core from making outbound connections. It’s safe to allow Bitcoin Core to use all networks. (Note: you will still need to configure inbound connections as described later in the Network Configuration section.)
[Image: en-win10-bitcoin-core-outgoing-firewall.png?1538575559]
Bitcoin Core GUI will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time by closing it; it will resume from the point where it stopped the next time you start it.
[Image: en-win10-ibd.png?1538575559]
After download is complete, you may use Bitcoin Core as your wallet or you can just let it run to help support the Bitcoin network.
Optional: Start Your Node At Login
Starting your node automatically each time you login to your computer makes it easy for you to contribute to the network. The easiest way to do this is to tell Bitcoin Core GUI to start at login.
While running Bitcoin Core GUI, open the Settings menu and choose Options. On the Main tab, click Start Bitcoin on system login. Click the Ok button to save the new settings.
[Image: en-win10-start-on-login.png?1538575559]
The next time you login to your desktop, Bitcoin Core GUI will be automatically started minimized in the task bar.
Warning: to prevent data corruption, do not force shutdown of your computer from the Windows shutdown screen when you have Bitcoin Core running.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Bitcoin Core Daemon
To start Bitcoin Core daemon, first open a command window: press the Windows key (
Code:
⊞ Win
) and type “cmd”. Choose the option labeled “Command Prompt”.
[Image: en-win10-running-cmd.png?1538575559]
If you installed Bitcoin Core into the default directory, type the following at the command prompt:
Code:
C:\Program Files\Bitcoin\daemon\bitcoind
Bitcoin Core daemon should start. To interact with Bitcoin Core daemon, you will use the command
Code:
bitcoin-cli
(Bitcoin command line interface). If you installed Bitcoin Core into the default location, type the following at the command prompt to see whether it works:
Code:
C:\Program Files\Bitcoin\daemon\bitcoin-cli getblockchaininfo
Note: it may take up to several minutes for Bitcoin Core to start, during which it will display the following message whenever you use
Code:
bitcoin-cli
:
Code:
error: {"code":-28,"message":"Verifying blocks..."}
After it starts, you may find the following commands useful for basic interaction with your node:
Code:
getblockchaininfo
,
Code:
getnetworkinfo
,
Code:
getnettotals
,
Code:
getwalletinfo
,
Code:
stop
, and
Code:
help
.
For example, to safely stop your node, run the following command:
Code:
C:\Program Files\Bitcoin\daemon\bitcoin-cli stop
A complete list of commands is available in the Bitcoin.org developer reference.
When Bitcoin Core daemon first starts, it will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time using the
Code:
stop
command; it will resume from the point where it stopped the next time you start it.
Optional: Start Your Node At Boot
Starting your node automatically each time your computer boots makes it easy for you to contribute to the network. The easiest way to do this is to start Bitcoin Core daemon when you login to your computer.
Start File Explorer and go to:
Code:
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp
Right-click on the File Explorer window and choose New → Text file. Name the file
Code:
start_bitcoind.bat
. Then right-click on it and choose Open in Notepad (or whatever editor you prefer). Copy and paste the following line into the file.
Code:
C:\Program Files\Bitcoin\daemon\bitcoind
(If you installed Bitcoin Core in a non-default directory, use that directory path instead.)
Save the file. The next time you login to your computer, Bitcoin Core daemon will be automatically started.
Warning: to prevent data corruption, do not force shutdown of your computer from the Windows shutdown screen when you have Bitcoin Core running.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Windows 8.x
Instructions for Bitcoin Core 0.14.2 on Windows 8 and 8.1.
Go to the Bitcoin Core download page and verify you have made a secure connection to the server.
[Image: en-secure-connection.png?1538575559]
Click the large blue Download Bitcoin Core button to download the Bitcoin Core installer to your desktop.
Optional: Verify the release signatures
If you know how to use PGP, you should also click the Verify Release Signatures link on the download page to download a signed list of SHA256 file hashes. The 0.11 and later releases are signed by Wladimir J. van der Laan’s releases key with the fingerprint:
Code:
01EA 5486 DE18 A882 D4C2  6845 90C8 019E 36C2 E964
Earlier releases were signed by Wladimir J. van der Laan’s regular key. That key’s fingerprint is:
Code:
71A3 B167 3540 5025 D447  E8F2 7481 0B01 2346 C9A6
Even earlier releases were signed by Gavin Andresen’s key. His primary key’s fingerprint is:
Code:
2664 6D99 CBAE C9B8 1982  EF60 29D9 EE6B 1FC7 30C1
You should verify these keys belong to their owners using the web of trust or other trustworthy means. Then use PGP to verify the signature on the release signatures file. Finally, use PGP or another utility to compute the SHA256 hash of the archive you downloaded, and ensure the computed hash matches the hash listed in the verified release signatures file.
After downloading the file to your desktop or your Downloads folder (
Code:
C:\Users\<YOUR USER NAME>\Downloads
), run it by double-clicking its icon. Windows will ask you to confirm that you want to run it. Click Yes and the Bitcoin installer will start. It’s a typical Windows installer, and it will guide you through the decisions you need to make about where to install Bitcoin Core.
[Image: en-win7-installer-start.png?1538575559]
To continue, choose one of the following options
  1. If you want to use the Bitcoin Core Graphical User Interface (GUI), proceed to the Bitcoin Core GUI section below.
  2. If you want to use the Bitcoin Core daemon (bitcoind), which is useful for programmers and advanced users, proceed to the Bitcoin Core Daemon section below.
  3. If you want to use both the GUI and the daemon, read both the GUI instructions and the daemon instructions. Note that you can’t run both the GUI and the daemon at the same time using the same configuration directory.
Bitcoin Core GUI
Press the Windows key (
Code:
⊞ Win
) and start typing “bitcoin”. When the Bitcoin Core icon appears (as shown below), click on it.
[Image: en-win8-start-bitcoin-core.png?1538575559]
You will be prompted to choose a directory to store the Bitcoin block chain and your wallet. Unless you have a separate partition or drive you want to use, click Ok to use the default.
[Image: en-win7-welcome-to-bitcoin-core.png?1538575559]
Your firewall may block Bitcoin Core from making outbound connections. It’s safe to allow Bitcoin Core to use all networks. (Note: you will still need to configure inbound connections as described later in the Network Configuration section.)
[Image: en-win7-bitcoin-core-outgoing-firewall.png?1538575559]
Bitcoin Core GUI will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time by closing it; it will resume from the point where it stopped the next time you start it.
[Image: en-win7-ibd.png?1538575559]
After download is complete, you may use Bitcoin Core as your wallet or you can just let it run to help support the Bitcoin network.
Optional: Start Your Node At Login
Starting your node automatically each time you login to your computer makes it easy for you to contribute to the network. The easiest way to do this is to tell Bitcoin Core GUI to start at login.
While running Bitcoin Core GUI, open the Settings menu and choose Options. On the Main tab, click Start Bitcoin on system login. Click the Ok button to save the new settings.
[Image: en-win7-start-on-login.png?1538575559]
The next time you login to your desktop, Bitcoin Core GUI will be automatically started minimized in the task bar.
Warning: to prevent data corruption, do not force shutdown of your computer from the Windows shutdown screen when you have Bitcoin Core running.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Bitcoin Core Daemon
To start Bitcoin Core daemon, first open a command window: press the Windows key (
Code:
⊞ Win
) and type “cmd”. Choose the option labeled “Command Prompt”.
[Image: en-win8-running-cmd.png?1538575559]
If you installed Bitcoin Core into the default directory, type the following at the command prompt:
Code:
C:\Program Files\Bitcoin\daemon\bitcoind
Bitcoin Core daemon should start. To interact with Bitcoin Core daemon, you will use the command
Code:
bitcoin-cli
(Bitcoin command line interface). If you installed Bitcoin Core into the default location, type the following at the command prompt to see whether it works:
Code:
C:\Program Files\Bitcoin\daemon\bitcoin-cli getblockchaininfo
Note: it may take up to several minutes for Bitcoin Core to start, during which it will display the following message whenever you use
Code:
bitcoin-cli
:
Code:
error: {"code":-28,"message":"Verifying blocks..."}
After it starts, you may find the following commands useful for basic interaction with your node:
Code:
getblockchaininfo
,
Code:
getnetworkinfo
,
Code:
getnettotals
,
Code:
getwalletinfo
,
Code:
stop
, and
Code:
help
.
For example, to safely stop your node, run the following command:
Code:
C:\Program Files\Bitcoin\daemon\bitcoin-cli stop
A complete list of commands is available in the Bitcoin.org developer reference.
When Bitcoin Core daemon first starts, it will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time using the
Code:
stop
command; it will resume from the point where it stopped the next time you start it.
Optional: Start Your Node At Boot
Starting your node automatically each time your computer boots makes it easy for you to contribute to the network. The easiest way to do this is to start Bitcoin Core daemon when you login to your computer.
Start File Explorer and go to:
Code:
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp
Right-click on the File Explorer window and choose New → Text file. Name the file
Code:
start_bitcoind.bat
. Then right-click on it and choose Open in Notepad (or whatever editor you prefer). Copy and paste the following line into the file.
Code:
C:\Program Files\Bitcoin\daemon\bitcoind
(If you installed Bitcoin Core in a non-default directory, use that directory path instead.)
Save the file. The next time you login to your computer, Bitcoin Core daemon will be automatically started.
Warning: to prevent data corruption, do not force shutdown of your computer from the Windows shutdown screen when you have Bitcoin Core running.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Windows 7
*Instructions for Bitcoin Core 0.14.2
Go to the Bitcoin Core download page and verify you have made a secure connection to the server.
[Image: en-secure-connection.png?1538575559]
Click the large blue Download Bitcoin Core button to download the Bitcoin Core installer to your desktop.
Optional: Verify the release signatures
If you know how to use PGP, you should also click the Verify Release Signatures link on the download page to download a signed list of SHA256 file hashes. The 0.11 and later releases are signed by Wladimir J. van der Laan’s releases key with the fingerprint:
Code:
01EA 5486 DE18 A882 D4C2  6845 90C8 019E 36C2 E964
Earlier releases were signed by Wladimir J. van der Laan’s regular key. That key’s fingerprint is:
Code:
71A3 B167 3540 5025 D447  E8F2 7481 0B01 2346 C9A6
Even earlier releases were signed by Gavin Andresen’s key. His primary key’s fingerprint is:
Code:
2664 6D99 CBAE C9B8 1982  EF60 29D9 EE6B 1FC7 30C1
You should verify these keys belong to their owners using the web of trust or other trustworthy means. Then use PGP to verify the signature on the release signatures file. Finally, use PGP or another utility to compute the SHA256 hash of the archive you downloaded, and ensure the computed hash matches the hash listed in the verified release signatures file.
After downloading the file to your desktop or your Downloads folder (
Code:
C:\Users\<YOUR USER NAME>\Downloads
), run it by double-clicking its icon. Windows will ask you to confirm that you want to run it. Click Yes and the Bitcoin installer will start. It’s a typical Windows installer, and it will guide you through the decisions you need to make about where to install Bitcoin Core.
[Image: en-win7-installer-start.png?1538575559]
To continue, choose one of the following options
  1. If you want to use the Bitcoin Core Graphical User Interface (GUI), proceed to the Bitcoin Core GUI section below.
  2. If you want to use the Bitcoin Core daemon (bitcoind), which is useful for programmers and advanced users, proceed to the Bitcoin Core Daemon section below.
  3. If you want to use both the GUI and the daemon, read both the GUI instructions and the daemon instructions. Note that you can’t run both the GUI and the daemon at the same time using the same configuration directory.
Bitcoin Core GUI
Open the Start menu, type
Code:
bitcoin
into the search box, and click the Bitcoin Core icon.
[Image: en-win7-start-bitcoin-core.png?1538575559]
You will be prompted to choose a directory to store the Bitcoin block chain and your wallet. Unless you have a separate partition or drive you want to use, click Ok to use the default.
[Image: en-win7-welcome-to-bitcoin-core.png?1538575559]
Your firewall may block Bitcoin Core from making outbound connections. It’s safe to allow Bitcoin Core to use all networks. (Note: you will still need to configure inbound connections as described later in the Network Configuration section.)
[Image: en-win7-bitcoin-core-outgoing-firewall.png?1538575559]
Bitcoin Core GUI will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time by closing it; it will resume from the point where it stopped the next time you start it.
[Image: en-win7-ibd.png?1538575559]
After download is complete, you may use Bitcoin Core as your wallet or you can just let it run to help support the Bitcoin network.
Optional: Start Your Node At Login
Starting your node automatically each time you login to your computer makes it easy for you to contribute to the network. The easiest way to do this is to tell Bitcoin Core GUI to start at login.
While running Bitcoin Core GUI, open the Settings menu and choose Options. On the Main tab, click Start Bitcoin on system login. Click the Ok button to save the new settings.
[Image: en-win7-start-on-login.png?1538575559]
The next time you login to your desktop, Bitcoin Core GUI will be automatically started minimized in the task bar.
Warning: to prevent data corruption, do not force shutdown of your computer from the Windows shutdown screen when you have Bitcoin Core running.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Bitcoin Core Daemon
To start Bitcoin Core daemon, first open a command window: press the Windows key (
Code:
⊞ Win
) and type “cmd”. Choose the program named “cmd.exe”
[Image: en-win7-running-cmd.png?1538575559]
If you installed the Bitcoin Core into the default directory, type the following at the command prompt :
Code:
C:\Program Files\Bitcoin\daemon\bitcoind
Bitcoin Core daemon should start. You can now try using Bitcoin Cli Utility.
To interact with Bitcoin Core daemon, you will use the command
Code:
bitcoin-cli
(Bitcoin command line interface). If you installed Bitcoin Core into the default location, type the following at the command prompt to see whether it works:
Code:
C:\Program Files\Bitcoin\daemon\bitcoin-cli getblockchaininfo
Note: it may take up to several minutes for Bitcoin Core to start, during which it will display the following message whenever you use
Code:
bitcoin-cli
:
Code:
error: {"code":-28,"message":"Verifying blocks..."}
After it starts, you may find the following commands useful for basic interaction with your node:
Code:
getblockchaininfo
,
Code:
getnetworkinfo
,
Code:
getnettotals
,
Code:
getwalletinfo
,
Code:
stop
, and
Code:
help
[url=https://bitcoin.org/en/developer-reference#help].
For example, to safely stop your node, run the following command:
Code:
C:\Program Files\Bitcoin\daemon\bitcoin-cli stop
A complete list of commands is available in the Bitcoin.org developer reference.
When Bitcoin Core daemon first starts, it will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time using the
Code:
stop
command; it will resume from the point where it stopped the next time you start it.
Optional: Start Your Node At Boot
Starting your node automatically each time your computer boots makes it easy for you to contribute to the network. The easiest way to do this is to start Bitcoin Core daemon when you login to your computer.
Start File Explorer and go to:
Code:
C:\Users\Example\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\StartUp
You can also access this folder by executing the following command after reaching the
Code:
Execute...
prompt :
Code:
shell:startup
Right-click on the File Explorer window and choose New → Text file. Name the file
Code:
start_bitcoind.bat
. Then right-click on it and choose Open in Notepad (or whatever editor you prefer). Copy and paste the following line into the file.
Code:
C:\Program Files\Bitcoin\daemon\bitcoind
(If you installed Bitcoin Core in a non-default directory, use that directory path instead.)
Save the file. The next time you login to your computer, Bitcoin Core daemon will be automatically started.
Warning: to prevent data corruption, do not force shutdown of your computer from the Windows shutdown screen when you have Bitcoin Core running.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Mac OS X Instructions
Mac OS X Yosemite 10.10.x
Instructions for Bitcoin Core 0.14.2 on Mac OS X Yosemite
Go to the Bitcoin Core download page and verify you have made a secure connection to the server.
[Image: en-osx-safari-secure-connection.png?1538575559]
Click the large blue Download Bitcoin Core button to download the Bitcoin Core installer to your Downloads folder.
Optional: Verify the release signatures
If you know how to use PGP, you should also click the Verify Release Signatures link on the download page to download a signed list of SHA256 file hashes. The 0.11 and later releases are signed by Wladimir J. van der Laan’s releases key with the fingerprint:
Code:
01EA 5486 DE18 A882 D4C2  6845 90C8 019E 36C2 E964
Earlier releases were signed by Wladimir J. van der Laan’s regular key. That key’s fingerprint is:
Code:
71A3 B167 3540 5025 D447  E8F2 7481 0B01 2346 C9A6
Even earlier releases were signed by Gavin Andresen’s key. His primary key’s fingerprint is:
Code:
2664 6D99 CBAE C9B8 1982  EF60 29D9 EE6B 1FC7 30C1
You should verify these keys belong to their owners using the web of trust or other trustworthy means. Then use PGP to verify the signature on the release signatures file. Finally, use PGP or another utility to compute the SHA256 hash of the archive you downloaded, and ensure the computed hash matches the hash listed in the verified release signatures file.
After downloading the file to your Downloads folder (
Code:
/Users/<YOUR USER NAME>/Downloads
), run it by double-clicking its icon. OS X will open a Finder window for you to drag Bitcoin Core to your Applications folder.
[Image: en-osx-dmg-open.png?1538575559]
Bitcoin Core GUI
The first time running Bitcoin Core, Max OS X will ask you to confirm that you want to run it:
[Image: en-osx-security.png?1538575559]
You will be prompted to choose a directory to store the Bitcoin block chain and your wallet. Unless you have a separate partition or drive you want to use, click Ok to use the default.
[Image: en-osx-welcome-to-bitcoin-core.png?1538575559]
Bitcoin Core GUI will begin to download the block chain. This step will take at least several days, and it may take much more time on a slow Internet connection or with a slow computer. During the download, Bitcoin Core will use a significant part of your connection bandwidth. You can stop Bitcoin Core at any time by closing it; it will resume from the point where it stopped the next time you start it.
[Image: en-osx-ibd.png?1538575559]
After download is complete, you may use Bitcoin Core as your wallet or you can just let it run to help support the Bitcoin network.
Optional: Start Your Node At Login
Starting your node automatically each time you login to your computer makes it easy for you to contribute to the network. The easiest way to do this is to tell Bitcoin Core GUI to start at login.
While running Bitcoin Core GUI, open the Bitcoin Core menu and choose Preferences. On the Main tab, click Start Bitcoin on system login. Click the Ok button to save the new settings.
[Image: en-osx-start-on-login.png?1538575559]
The next time you login to your desktop, Bitcoin Core GUI will be automatically started minimized in the task bar.
You have now completed installing Bitcoin Core. If you have any questions, please ask in one of Bitcoin’s many communities, such as Bitcoin StackExchange, BitcoinTalk technical support, or the #bitcoin IRC chatroom on Freenode.
To support the Bitcoin network, you also need to allow incoming connections. Please read the Network Configuration section for details.
Bitcoin Core Daemon
The Bitcoin Core daemon (bitcoind) is not included in the .dmg file you may have downloaded to install Bitcoin-QT. Bitcoind, along with its support binaries, is instead included in the OS X .tar.gz file listed on the official Bitcoin Core download page. To download this file using Terminal, execute the following command:
Code:
curl -O https://bitcoin.org/bin/bitcoin-core-0.17.0/bitcoin-0.17.0-osx64.tar.gz
Optional: Verify the release signatures
If you know how to use PGP, you should also click the Verify Release Signatures link on the download page to download a signed list of SHA256 file hashes. The 0.11 and later releases are signed by Wladimir J. van der Laan’s releases key with the fingerprint:
Code:
01EA 5486 DE18 A882 D4C2  6845 90C8 019E 36C2 E964
Earlier releases were signed by Wladimir J. van der Laan’s regular key. That key’s fingerprint is:
Code:
71A3 B167 3540 5025 D447  E8F2 7481 0B01 2346 C9A6
Even earlier releases were signed by Gavin Andresen’s key. His primary key’s fingerprint is:
Code:
2664 6D99 CBAE C9B8 1982  EF60 29D9 EE6B 1FC7 30C1
You should verify these keys belong to their owners using the web of trust or other trustworthy means. Then use PGP to verify the signature on the release signatures file. Finally, use PGP or another utility to compute the SHA256 hash of the archive you downloaded, and ensure the computed hash matches the hash listed in the verified release signatures file.
Extract bitcoind and its support binaries from th

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