An API for dApp frontends to communicate with the RChain blockchain.

The RChain Cooperative is developing a decentralized, economically sustainable public compute infrastructure. Decentralized applications or "dApps" will run their business logic as smart contracts on the blockchain. Their user interfaces will be more traditional programs that interact with the blockchain as a backend. This separation allows dApp developers to create nice abstract interfaces, and allows end users to create their own sovereign interfaces should they choose to do so.

At the moment that likely means running your own RNode. We're working on a community node at rnode-test.rhobot.net

Make note of your RNode's hostname and gRPC port. If you're not sure, localhost and 40401 are good guesses.

Clone this repository with eg git clone https://github.com/JoshOrndorff/RChain-API

And install dependencies with npm install

Run rnodeAPI.js with host and port arguments, as in: node rnodeAPI.js rnode-test.rhobot.net 50000.

You should see something like:

stuffToSign serialized {
  "type": "Buffer",
  "data": "0a300a110a0f2a031a01784a08000000000000000012112a051a036162634a0800000000000000002a0800000000000000004a080000000000000000"
}
...
doDeploy result: { success: true, message: 'Success!' }
@@createBlock():  {
  "block": {
    "blockHash": {
      "type": "Buffer",
      "data": "3c5d97e2627432026b6d4a17c8027afb95b72e8d08a936d785b58459eff5859e"

There are not yet nice truffle-style build tools, so you will probably deploy your code directly using the rnode deploy thin client or using RChain-API itself.

const myNode = RNode('localhost', 40401);
rchain.doDeploy({
  term: '@"aliceUpdates"!("Having fun traveling!")',
  timestamp: clock().valueOf(),
  // from: '0x1',
  // nonce: 0,
})

TODO Better docs would be great.

For now see the integration test examples in rnodeAPI.js

• Nth Caller a minimal RChain-based dApp game that uses RChain-API
• Status a moderately complex dapp that uses more RChain-API features as well as RSign
• Coin Faucet An advanced robust dApp that use raspberry PI to airdrop tokens to devices in physical proximity
• RChain-dbr A web-of-trust based distributed budgeting and rewards dApp
• RSign A chrome extension for generating client-side signatures akin to metamask
• node-client A similar but less mature RChain API written in python

• Commit hash 27d722e

Copyright 2018 RChain Cooperative

Apache 2.0 License (See LICENSE.txt)

Contributions welcome (See CONTRIBUTING.md)