Kameleon

Javascript framework for private and public blockchains powered by Tendermint consensus.

This project is work in progress. It should not be used in production to hold real value.

Features

• Pure Javascript experience for both public and private blockchain development
• P2P and consensus provided by a Tendermint node under the hood
• Extensible using third party middlewares
• Ethereum transaction format and RLP serialization
• Secp256k1 addresses and signing compatible with Ethereum wallet tools
• Transaction signature validation

Installation

Requirements:

• Node.js v.7.6.0 or higher
• Mac or Linux

npm install --save kameleon

Usage

Minimal Viable Kameleon

let kameleon = require('kameleon')

let node = new kameleon({
    initialState: {
        accounts:{}
    }
})

node.use(function(state, tx) {
  state.accounts[tx.from] = true
})

node.query('account',function(state, account){
  return state.accounts[account] === true
})

node.start()

Configuration

new kameleon(Object) creates a new kameleon instance. It can be given an object as an optional argument to configure Kameleon. Below are the default values:

{
    initialState: {},
    queryHandlers:{},
    validators:[],
    verbose: false,
    home: process.cwd(),
    blockSize:1000000, // 1MB
    rpcPort:26657,
    abciPort:26658,
    p2pPort:44446,
    chainId:99,
    validatorPubKeyTypes:['ed25519', 'secp256k1']
}

API

API docs will be deployed on a separate site soon.

Client

To connect to a Kameleon node from a browser or Node.js, use the Kameleon client package.

Acknowledgement

Kameleon was heavily inspired by the great work done by the community. We invite you to also check out their repo.

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

License

GNU GPLv3