An alternative full node bitcoin implementation written in Go (golang)
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addrmgr Relicense to the btcsuite developers. May 1, 2015
blockchain Removed BFFastAdd from connectBestChain call so we do a bit more veri… Dec 7, 2015
btcec docs: Make various README.md files consistent. Oct 23, 2015
btcjson adds filteraddrs param to searchrawtransactions API Nov 15, 2015
chaincfg Removed hardcoded pruning buffer size Dec 7, 2015
cmd Prepare for release 0.12.0. Nov 21, 2015
database Added pruning when more than 10 blocks are stored in the database Dec 7, 2015
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limits Relicense to the btcsuite developers. May 1, 2015
peer Use new connections for peers in TestOutboundPeer Nov 16, 2015
release Update release script to correct btcctl location. Feb 28, 2015
txscript Add signature hash calculation tests from Bitcoin Core. Nov 15, 2015
wire Implement BIP0065 changeover logic for v4 blocks. Oct 28, 2015
.gitignore Convert .gitignore line endings to unix. Aug 7, 2013
.travis.yml Update TravisCI to test against golang 1.5.1. Sep 17, 2015
CHANGES Prepare for release 0.12.0. Nov 21, 2015
LICENSE Relicense to the btcsuite developers. May 1, 2015
README.md Update README.md Dec 21, 2016
blocklogger.go Add support for an optional address-based transaction index. Feb 5, 2015
blockmanager.go Bug fixes related to initial block download Dec 2, 2015
btcd.go Output error to stderr if the limits can't be set. Sep 2, 2015
chainindexer.go Convert block heights to int32. Aug 11, 2015
config.go peer: Refactor peer code into its own package. Oct 23, 2015
cpuminer.go Integrate a valid ECDSA signature cache into btcd Oct 9, 2015
deps.txt Add 0.12.0 deps to deps.txt. Nov 20, 2015
discovery.go Relicense to the btcsuite developers. May 1, 2015
doc.go config: New option --minrelaytxfee Oct 20, 2015
goclean.sh Correct a few style related issues found by golint. Oct 20, 2015
log.go peer: Refactor peer code into its own package. Oct 23, 2015
mempool.go mempool: convert orphansByPrev from a list to a map. Nov 13, 2015
mempoolerror.go Relicense to the btcsuite developers. May 1, 2015
mining.go Implement BIP0065 changeover logic for v4 blocks. Oct 28, 2015
params.go chaincfg: Move DNS Seeds to chaincfg. Nov 9, 2015
policy.go mempool: Move checkTransactionStandard to policy. Nov 11, 2015
policy_test.go mempool: Move checkTransactionStandard to policy. Nov 11, 2015
rpcserver.go adds filteraddrs param to searchrawtransactions API Nov 15, 2015
rpcserverhelp.go adds filteraddrs param to searchrawtransactions API Nov 15, 2015
rpcserverhelp_test.go Relicense to the btcsuite developers. May 1, 2015
rpcwebsocket.go Add a websocket session RPC. Sep 17, 2015
sample-btcd.conf config: New option --minrelaytxfee Oct 20, 2015
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upnp.go Fixed DeletePortMapping documentation typo Jan 1, 2015
version.go Prepare for release 0.12.0. Nov 21, 2015

README.md

Note: This is not maintained, and I have no plans to update it. Bitcoin Core now has an implementation of pruning (not sure about btcd).

btcd-prune ("Pruning Nodes")

Team Members: Cyrus Malekpour (cm7bv)

My project is to create a new class of node that actively prunes the blockchain it stores, and to explore the implications of such a node on the Bitcoin network. This new class of node, called a "pruning node", would only store the UTXO set, and the X latest blocks it has seen to confirm incoming transactions. As new blocks are read in, the node would push out the oldest blocks so the total disk space usage never increases. I also hope to write up findings about operations of the node and research what would happen if a majority of nodes began pruning.

Currently, this repository is just a fork of btcd. I am actively working on implementing pruning functionality, and will rely on checkpoints to help with the initial blockchain download problem.


[Build Status] (https://travis-ci.org/btcsuite/btcd)

btcd is an alternative full node bitcoin implementation written in Go (golang).

This project is currently under active development and is in a Beta state. It is extremely stable and has been in production use for over 6 months as of May 2014, however there are still a couple of major features we want to add before we come out of beta.

It properly downloads, validates, and serves the block chain using the exact rules (including bugs) for block acceptance as Bitcoin Core. We have taken great care to avoid btcd causing a fork to the block chain. It passes all of the 'official' block acceptance tests (https://github.com/TheBlueMatt/test-scripts) as well as all of the JSON test data in the Bitcoin Core code.

It also relays newly mined blocks, maintains a transaction pool, and relays individual transactions that have not yet made it into a block. It ensures all transactions admitted to the pool follow the rules required by the block chain and also includes the same checks which filter transactions based on miner requirements ("standard" transactions) as Bitcoin Core.

One key difference between btcd and Bitcoin Core is that btcd does NOT include wallet functionality and this was a very intentional design decision. See the blog entry here for more details. This means you can't actually make or receive payments directly with btcd. That functionality is provided by the btcwallet and btcgui projects which are both under active development.

Requirements

Go 1.3 or newer.

Installation

Windows - MSI Available

https://github.com/btcsuite/btcd/releases

Linux/BSD/MacOSX/POSIX - Build from Source

  • Install Go according to the installation instructions here: http://golang.org/doc/install

  • Ensure Go was installed properly and is a supported version:

$ go version
$ go env GOROOT GOPATH

NOTE: The GOROOT and GOPATH above must not be the same path. It is recommended that GOPATH is set to a directory in your home directory such as ~/goprojects to avoid write permission issues.

  • Run the following command to obtain btcd, all dependencies, and install it:
$ go get -u github.com/btcsuite/btcd/...
  • btcd (and utilities) will now be installed in either $GOROOT/bin or $GOPATH/bin depending on your configuration. If you did not already add the bin directory to your system path during Go installation, we recommend you do so now.

Updating

Windows

Install a newer MSI

Linux/BSD/MacOSX/POSIX - Build from Source

  • Run the following command to update btcd, all dependencies, and install it:
$ go get -u -v github.com/btcsuite/btcd/...

Getting Started

btcd has several configuration options avilable to tweak how it runs, but all of the basic operations described in the intro section work with zero configuration.

Windows (Installed from MSI)

Launch btcd from your Start menu.

Linux/BSD/POSIX/Source

$ ./btcd

IRC

  • irc.freenode.net
  • channel #btcd
  • webchat

Mailing lists

  • btcd: discussion of btcd and its packages.
  • btcd-commits: readonly mail-out of source code changes.

To subscribe to a given list, send email to list+subscribe@opensource.conformal.com

Issue Tracker

The integrated github issue tracker is used for this project.

Documentation

The documentation is a work-in-progress. It is located in the docs folder.

GPG Verification Key

All official release tags are signed by Conformal so users can ensure the code has not been tampered with and is coming from the btcsuite developers. To verify the signature perform the following:

  • Download the public key from the Conformal website at https://opensource.conformal.com/GIT-GPG-KEY-conformal.txt

  • Import the public key into your GPG keyring:

    gpg --import GIT-GPG-KEY-conformal.txt
  • Verify the release tag with the following command where TAG_NAME is a placeholder for the specific tag:

    git tag -v TAG_NAME

License

btcd is licensed under the copyfree ISC License.