Parity Development Stack

Tomasz Drwięga

@tomusdrw

Parity Technologies

6th Dec, Tech Deep Dive

What we do in Parity Tech?

Core & Protocol Development
(Rust)

Second Layer / Middleware
(Node.js / Rust)

Dapps/UI
& Dev. Libraries (JavaScript)

Core & Protocol Development

• Ethereum
• Bitcoin
• IPFS
• Polkadot

• Light Client
• Whisper
• Secret Store

Parity Ethereum Client

Pluggable consensus

• Ethash
• AuRa (PoA)
• Tendermint (PBFT)
• InstantSeal (Dev)

Standards compliant

• JSON-RPC
  (http, ws, ipc)
• PUB-SUB
• Custom extensions

Unique features of Parity

• Warp-Sync
• State-trie pruning
• Tracing API
• FatDB
• Generic Pub-Sub

• Secure Transaction Signer
• Parity Light Protocol
• On-Chain Auto-Updating
• Network Permissions
• Private transactions

Middlewares

• SMS Verification
• E-mail Verification
• PICOPS
• Transaction Scheduler
• Network Bridges

Certifier Interface

• All certifiers using a common ABI
• Easy to integrate new Certifiers (Registry)
• Easy to use existing certifiers

ID Service APIs

• Regular ReSTful API for ID
• Easy to integrate without touching the chain
• Open-Source you can setup your own

Dapps & UI tools

• Parity 1.9 contains a revamped Wallet
• Thin Kernel (Shell) + Dapps
• Each part of the Wallet can be customized
• Dapp Store

Mobile Signer

Parity Wallet

Chrome Extension

• Integrate with web3-enabled websites
• Connects to your local node
• Future plans:
  • augment identities

Contract IDE

Dapp

Development Libraries

• @parity/api
• oo7 toolchain

@parity/api

• Web3 replacement
• Smaller, simpler and promise-based
• PubSub support
• Support for parity-specific RPCs
• For Node.js & Browser

oo7 & oo7-parity

• Reactive bonds for Ethereum
• No need to poll - you subscribe for updates
• Easily composable

oo7 & oo7-parity

// npm i oo7-parity
import {Bonds, hexToAscii} from 'oo7-parity'

const bonds = Bonds()

// A bond for latest block number
bonds.blockNumber
    .tie(console.log) // 5971971

// A bond for latest block extra data
bonds.blocks[bonds.blockNumber]
    .extraData
    .map(hexToAscii)
    .tie(console.log) // Parity.1.7

oo7 & oo7-parity

// npm i oo7-parity
import {Bonds, formatBalance} from 'oo7-parity'

const bonds = Bonds()

bonds.balance(bonds.me)
    .map(formatBalance)
    .tie(console.log) // 4.45 ETH

Bonds also work for contract queries and transactions

oo7-react

// Import reactive element
import {Rspan} from 'oo7-react'
import {Bonds, formatBalance} from 'oo7-parity'

const bond = new Bond()

class App extends Component {
  render() {
    return (
      <Rspan>
        {bonds.me} has 
        {bonds.balance(bonds.me).map(formatBalance)}
      </Rspan>
    );
  }
}

parity-reactive-ui

import {Bonds} from 'oo7-parity'
import {AccountIcon} from 'parity-reactive-ui'

const bonds = Bonds();

class App extends React.Component {
  render () {
    return (
        <AccountIcon address={bonds.me} />
    )
  }
}

Thank you!

Tomasz Drwięga

@tomusdrw

Parity Technologies