mixin

README

mixin

The Mixin BFT-DAG network reference implementation, the Trusted Execution Environment is not integrated into this repository yet.

Get Started

Install golang and setup GOPATH following this guide https://golang.org/doc/install.

$ go get -u github.com/MixinNetwork/mixin
$ cd $GOPATH/src/github.com/MixinNetwork/mixin
$ go build

The mixin command is both the kernel node and tools to communicate with the node RPC interface.

$ mixin

NAME:
   mixin - A free and lightning fast peer-to-peer transactional network for digital assets.

USAGE:
   mixin [global options] command [command options] [arguments...]

VERSION:
   v0.3.2-fac0871857badab82333af6f4ad71d8ecb321e5a

COMMANDS:
     kernel, k              Start the Mixin Kernel daemon
     setuptestnet           Setup the test nodes and genesis
     createaddress          Create a new Mixin address
     decodeaddress          Decode an address as public view key and public spend key
     updateheadreference    Update the cache round external reference, never use it unless agree by other nodes
     removegraphentries     Remove data entries by prefix from the graph data storage
     validategraphentries   Validate transaction hash integration
     signrawtransaction     Sign a JSON encoded transaction
     sendrawtransaction     Broadcast a hex encoded signed raw transaction
     decoderawtransaction   Decode a raw transaction as JSON
     getroundlink           Get the latest link between two nodes
     getroundbynumber       Get a specific round
     getroundbyhash         Get a specific round
     listsnapshots          List finalized snapshots
     getsnapshot            Get the snapshot by hash
     gettransaction         Get the finalized transaction by hash
     getutxo                Get the UTXO by hash and index
     listmintdistributions  List mint distributions
     getinfo                Get info from the node
     help, h                Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --help, -h     show help
   --version, -v  print the version

Mixin Kernel Address

Mixin Kernel address are a pair of ed25519 keys, following the CryptoNote protocol. To create a new address use the createaddress command.

$ mixin createaddress

address:	XINJkpCdwVk3qFqmS3AAAoTmC5Gm2fR3iRF7Rtt7hayuaLXNrtztS3LGPSxTmq5KQh3KJ2qYXYE5a9w8BWXhZAdsJKXqcvUr
view key:	568302b687a2fa3e8853ff35d99ffdf3817b98170de7b51e43d0dcf4fe30470f
spend key:	7c2b5c97278ed371d75610cccd9681af31b0d99be4adc2d66983f3c455fc9702

Share the address to receive assets from other Mixin Kernel addresses, and keep view key and spend key privately and securely.

Both the view key and spend key are required to spend the assets received from others, and the view key iteself is sufficient to decode and view all the transactions sent to address.

Sign and Send Raw Transaction

Basic Mixin Kernel transaction is similar to the transaction in Bitcoin, with following format.

{
  "version": 1,
  "asset": "a99c2e0e2b1da4d648755ef19bd95139acbbe6564cfb06dec7cd34931ca72cdc",
  "extra": "34366362393932382d653636632d343966392d386165632d366462366137346666663638",
  "outputs": [
    {
      "type": 0,
      "amount": "115.06849309",
      "script": "fffe01",
      "accounts": [
        "XINPXu5NBXszhpZDRJ8iA26TbQ2oWTSq1tXqKKeVeYWgLSz8yXGTtVhMogynYytoMewYVFR541wauLhy1YV33zg445E49YA7"
      ]
    }
  ],
  "inputs": [
    {
      "hash": "20001842d6eff5129c11f7c053bf1209f0267bf223f1681c9cb9d19fc773a692",
      "index": 11
    }
  ]
}

This is the same UTXO model used in Bitcoin, but with different field names. Among them version, type and script should not be modified unless you know some advanced topics.

Compact the raw transaction JSON and sign it with the private view and spend key as following.

$ mixin signrawtransaction -n mixin-node:8239 \
    -key 0d48c96d383d325a97eea5295cbf3afa7766c49db477b68fd8032ff7f59b0b00d77e434f96f3f42c2d1796662c7cc90497feaf3863a5815f27ba49fd5e29b906 \
    -raw '{"version":1,"asset":"a99c2e0e2b1da4d648755ef19bd95139acbbe6564cfb06dec7cd34931ca72cdc","extra":"34366362393932382d653636632d343966392d386165632d366462366137346666663638","outputs":[{"type":0,"amount":"115.06849309","script":"fffe01","accounts":["XINPXu5NBXszhpZDRJ8iA26TbQ2oWTSq1tXqKKeVeYWgLSz8yXGTtVhMogynYytoMewYVFR541wauLhy1YV33zg445E49YA7"]}],"inputs":[{"hash":"20001842d6eff5129c11f7c053bf1209f0267bf223f1681c9cb9d19fc773a692","index":11}]}'

Start a Kernel Node

To start a node, create a directory mixin for the config and network data files, then put the genesis.json, nodes.json and config.json files in it.

The main net genesis.json, nodes.json and an example config.example.json files can be obtained from here, you only need to put your own signer spend key in the config.json file.

$ mixin help kernel

NAME:
   mixin kernel - Start the Mixin Kernel daemon

USAGE:
   mixin kernel [command options] [arguments...]

OPTIONS:
   --dir value, -d value   the data directory
   --port value, -p value  the peer port to listen (default: 7239)

Local Test Net

This will setup a minimum local test net, with all nodes in a single device.

$ mixin setuptestnet

$ mixin kernel -dir /tmp/mixin-7001 -port 7001
$ mixin kernel -dir /tmp/mixin-7002 -port 7002
$ mixin kernel -dir /tmp/mixin-7003 -port 7003
$ mixin kernel -dir /tmp/mixin-7004 -port 7004
$ mixin kernel -dir /tmp/mixin-7005 -port 7005
$ mixin kernel -dir /tmp/mixin-7006 -port 7006
$ mixin kernel -dir /tmp/mixin-7007 -port 7007