btcwallet is a daemon handling bitcoin wallet functionality for a single user. It acts as both an RPC client to btcd and an RPC server for wallet clients and legacy RPC applications.
Public and private keys are derived using the heirarchical
deterministic format described by
Unencrypted private keys are not supported and are never written to
disk. btcwallet uses the
m/44'/<coin type>'/<account>'/<branch>/<address index>
HD path for all derived addresses, as described by
Due to the sensitive nature of public data in a BIP0032 wallet, btcwallet provides the option of encrypting not just private keys, but public data as well. This is intended to thwart privacy risks where a wallet file is compromised without exposing all current and future addresses (public keys) managed by the wallet. While access to this information would not allow an attacker to spend or steal coins, it does mean they could track all transactions involving your addresses and therefore know your exact balance. In a future release, public data encryption will extend to transactions as well.
btcwallet is not an SPV client and requires connecting to a local or remote btcd instance for asynchronous blockchain queries and notifications over websockets. Full btcd installation instructions can be found here. An alternative SPV mode that is compatible with btcd and Bitcoin Core is planned for a future release.
No release-ready graphical frontends currently exist, however the proof-of-concept btcgui project shows some of the possibilities of btcwallet. In the coming months a new stable RPC API is planned, at which point a high quality graphical frontend can be finished.
Mainnet support is currently disabled by default. Use of btcwallet on
mainnet requires passing the
--mainnet flag on the command line or
mainnet=1 to the configuration file. Mainnet will be enabled
by default in a future release after further database changes and
Installation and updating
Windows - MSIs Available
Install the latest MSIs available here:
Windows/Linux/BSD/POSIX - Build from source
If necessary, install Go according to the installation instructions here: http://golang.org/doc/install. It is recommended to add
PATHat this point.
Run the following commands to obtain and install btcd, btcwallet and all dependencies:
go get -u -v github.com/btcsuite/btcd/... go get -u -v github.com/btcsuite/btcwallet/...
The following instructions detail how to get started with btcwallet
connecting to a localhost btcd. Commands should be run in
or PowerShell on Windows, or any terminal emulator on *nix.
- Run the following command to start btcd:
btcd --testnet -u rpcuser -P rpcpass
- Run the following command to create a wallet:
btcwallet -u rpcuser -P rpcpass --create
- Run the following command to start btcwallet:
btcwallet -u rpcuser -P rpcpass
If everything appears to be working, it is recommended at this point to copy the sample btcd and btcwallet configurations and update with your RPC username and password.
PowerShell (Installed from MSI):
PS> cp "$env:ProgramFiles\Btcd Suite\Btcd\sample-btcd.conf" $env:LOCALAPPDATA\Btcd\btcd.conf PS> cp "$env:ProgramFiles\Btcd Suite\Btcwallet\sample-btcwallet.conf" $env:LOCALAPPDATA\Btcwallet\btcwallet.conf PS> $editor $env:LOCALAPPDATA\Btcd\btcd.conf PS> $editor $env:LOCALAPPDATA\Btcwallet\btcwallet.conf
PowerShell (Installed from source):
PS> cp $env:GOPATH\src\github.com\btcsuite\btcd\sample-btcd.conf $env:LOCALAPPDATA\Btcd\btcd.conf PS> cp $env:GOPATH\src\github.com\btcsuite\btcwallet\sample-btcwallet.conf $env:LOCALAPPDATA\Btcwallet\btcwallet.conf PS> $editor $env:LOCALAPPDATA\Btcd\btcd.conf PS> $editor $env:LOCALAPPDATA\Btcwallet\btcwallet.conf
Linux/BSD/POSIX (Installed from source):
$ cp $GOPATH/src/github.com/btcsuite/btcd/sample-btcd.conf ~/.btcd/btcd.conf $ cp $GOPATH/src/github.com/btcsuite/btcwallet/sample-btcwallet.conf ~/.btcwallet/btcwallet.conf $ $EDITOR ~/.btcd/btcd.conf $ $EDITOR ~/.btcwallet/btcwallet.conf
Clients wishing to use btcwallet are recommended to connect to the
ws endpoint over a websocket connection. Messages sent to btcwallet
over this websocket are expected to follow the standard Bitcoin JSON
API (partially documented
Websocket connections also enable additional API extensions and
JSON-RPC notifications (currently undocumented). The btcd packages
btcws provide types and functions for creating and
JSON (un)marshaling these requests and notifications.
The integrated github issue tracker is used for this project.
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_NAMEis a placeholder for the specific tag:
git tag -v TAG_NAME
btcwallet is licensed under the liberal ISC License.