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https://github.com/decred/dcrwallet

A secure Decred wallet daemon written in Go (golang).
https://github.com/decred/dcrwallet

blockchain cryptocurrency decred golang

Last synced: 3 months ago
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A secure Decred wallet daemon written in Go (golang).

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README 

        
dcrwallet

=========



dcrwallet is a daemon handling Decred wallet functionality.  All interaction

with the wallet is performed over RPC.



Public and private keys are derived using the hierarchical

deterministic format described by

[BIP0032](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki).

Unencrypted private keys are not supported and are never written to

disk.  dcrwallet uses the

`m/44'/'/'//
`

HD path for all derived addresses, as described by

[BIP0044](https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki).



dcrwallet provides two modes of operation to connect to the Decred

network.  The first (and default) is to communicate with a single

trusted `dcrd` instance using JSON-RPC.  The second is a

privacy-preserving Simplified Payment Verification (SPV) mode (enabled

with the `--spv` flag) where the wallet connects either to specified

peers (with `--spvconnect`) or peers discovered from seeders and other

peers. Both modes can be switched between with just a restart of the

wallet.  It is advised to avoid SPV mode for heavily-used wallets

which require downloading most blocks regardless.



Not all functionality is available when running in SPV mode.  Some of

these features may become available in future versions, but only if a

consensus vote passes to activate the required changes.  Currently,

the following features are disabled or unavailable to SPV wallets:



  * Voting



  * Revoking tickets before expiry



  * Determining exact number of live and missed tickets (as opposed to

    simply unspent).



Wallet clients interact with the wallet using one of two RPC servers:



  1. A JSON-RPC server inspired by the Bitcoin Core rpc server



     The JSON-RPC server exists to ease the migration of wallet applications

     from Core, but complete compatibility is not guaranteed.  Some portions of

     the API (and especially accounts) have to work differently due to other

     design decisions (mostly due to BIP0044).  However, if you find a

     compatibility issue and feel that it could be reasonably supported, please

     report an issue.  This server is enabled by default as long as a username

     and password are provided.



  2. A gRPC server



     The gRPC server uses a new API built for dcrwallet, but the API is not

     stabilized.  This server is enabled by default and may be disabled with

     the config option `--nogrpc`.  If you don't mind applications breaking

     due to API changes, don't want to deal with issues of the JSON-RPC API, or

     need notifications for changes to the wallet, this is the RPC server to

     use. The gRPC server is documented [here](./rpc/documentation/README.md).



## Installing and updating



### Binaries (Windows/Linux/macOS)



Binary releases are provided for common operating systems and architectures.

Please note that dcrwallet is CLI only. It is included in the

[CLI app suite](https://github.com/decred/decred-release/releases/latest).

If you would prefer a graphical user interface (GUI) instead, consider

downloading the GUI wallet [Decrediton](https://github.com/decred/decrediton).



https://decred.org/downloads/



* How to verify binaries before installing: https://docs.decred.org/advanced/verifying-binaries/

* How to install the CLI Suite: https://docs.decred.org/wallets/cli/cli-installation/

* How to install Decrediton: https://docs.decred.org/wallets/decrediton/decrediton-setup/



### Build from source (all platforms)



- **Install Go 1.21 or 1.22**



  Installation instructions can be found here: https://golang.org/doc/install.

  Ensure Go was installed properly and is a supported version:

  ```sh

  $ go version

  $ go env GOROOT GOPATH

  ```

  NOTE: `GOROOT` and `GOPATH` must not be on the same path. It is recommended

  to add `$GOPATH/bin` to your `PATH` according to the Golang.org instructions.



- **Build or Update dcrwallet**



  Since dcrwallet is a single Go module, it's possible to use a single command

  to download, build, and install without needing to clone the repo. Run:



  ```sh

  $ go install decred.org/dcrwallet/v4@master

  ```



  to build the latest master branch, or:



  ```sh

  $ go install decred.org/dcrwallet/v3@latest

  ```



  for the latest released version.



  Any version, branch, or tag may be appended following a `@` character after

  the package name.  The implicit default is to build `@latest`, which is the

  latest semantic version tag.  Building `@master` will build the latest

  development version.  The module name, including any `/vN` suffix, must match

  the `module` line in the `go.mod` at that version.  See `go help install`

  for more details.



  The `dcrwallet` executable will be installed to `$GOPATH/bin`.  `GOPATH`

  defaults to `$HOME/go` (or `%USERPROFILE%\go` on Windows).



## Getting Started



dcrwallet can connect to the Decred blockchain using either [dcrd](https://github.com/decred/dcrd)

or by running in [Simple Payment Verification (SPV)](https://docs.decred.org/wallets/spv/)

mode. Commands should be run in `cmd.exe` or PowerShell on Windows, or any

terminal emulator on *nix.



- Run the following command to create a wallet:



```sh

dcrwallet --create

```



- To use dcrwallet in SPV mode:



```sh

dcrwallet --spv

```



dcrwallet will find external full node peers. It will take a few minutes to

download the blockchain headers and filters, but it will not download full blocks.



- To use dcrwallet using a localhost dcrd:



You will need to install both [dcrd](https://github.com/decred/dcrd) and

[dcrctl](https://github.com/decred/dcrctl). `dcrctl` is the client that controls

`dcrd` and `dcrwallet` via remote procedure call (RPC).



Please follow the instructions in the documentation, beginning with

[Startup Basics](https://docs.decred.org/wallets/cli/startup-basics/)



## Running Tests



All tests may be run using the script `run_tests.sh`. Generally, Decred only

supports the current and previous major versions of Go.



```sh

./run_tests.sh

```



## Contact



If you have any further questions you can find us at:



https://decred.org/community/



## Issue Tracker



The [integrated github issue tracker](https://github.com/decred/dcrwallet/issues)

is used for this project.



## Documentation



The documentation for dcrwallet is a work-in-progress.  It is located in the

[docs](https://github.com/decred/dcrwallet/tree/master/docs) folder.



Additional documentation can be found on

[docs.decred.org](https://docs.decred.org/wallets/cli/dcrwallet-setup/).



## License



dcrwallet is licensed under the liberal ISC License.