ndaxglobal / prova

Prova blockchain for digital assets

Prova

Prova is a distributed consensus system for digital asset tokens written in Go (golang). Prova was built to support RMG, a digitized form of gold introduced by The Royal Mint and CME Group. Features include:

• Asset Issuance

  Prova is a simple, single asset blockchain with asset issuance rather than mining.

• Multi-signature only

  All accounts are multi-signature wallets.

• No “black holes”

  The system enforces rules making it impossible to send to invalid or non-recoverable addresses

• Permissioned Participants

  Prova can enforce only authorized validators and accounts.

• Trusted Technology

  Prova is based on mature blockchain technologies.

  The implementation is derived from btcd.

It downloads, validates, and serves a block chain using consensus rules for block acceptance. It includes a full block validation testing framework.

It relays newly generated blocks, maintains a transaction memory pool, and relays individual transactions that have not yet made it into a block. It ensures all individual transactions admitted to the pool follow the rules required by the block chain.

Prova does NOT include wallet functionality. This means you can't actually make or receive payments directly with Prova. That functionality is provided by Prova wallet implementations.

Requirements

Go 1.6 or newer.

Installation

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

If GOROOT or GOPATH is not set properly, add the following to your ~/.bashrc or /.profile startup files (substitute with proper directories if you have a custom installation of Go):

$ export GOROOT=/usr/local/go
$ export GOPATH=$HOME/go
$ export PATH=$PATH:$GOROOT/bin:$GOPATH/bin

The 'go' binary will be located under GOROOT, while your saved packages will be located under 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 ~/go to avoid write permission issues. It is also recommended to add $GOPATH/bin to your PATH at this point.

• Run the following commands to obtain prova, all dependencies, and install it:

$ go get -u github.com/Masterminds/glide
$ git clone https://github.com/bitgo/prova $GOPATH/src/github.com/bitgo/prova
$ cd $GOPATH/src/github.com/bitgo/prova
$ glide install
$ go install . ./cmd/...

• Prova (and utilities) will now be installed in $GOPATH/bin. If you did not already add the bin directory to your system path during Go installation, we recommend you do so now.

Updating

Linux/BSD/MacOSX/POSIX - Build from Source

• Run the following commands to update Prova, all dependencies, and install it:

$ cd $GOPATH/src/github.com/bitgo/prova
$ git pull && glide install
$ go install . ./cmd/...

Getting Started

Prova 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.

Linux/BSD/POSIX/Source

$ ./prova

Issues

The integrated github issue tracker is used for this project.

When reporting security issues, responsible disclosure is encouraged. The Prova developers at BitGo should be directly contacted at [email protected]

Documentation

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

License

Prova is licensed under the copyfree ISC License.