fairDataSociety / fdp-personal-sc

Run verifiable JavaScript apps in the edge using QuickJS/Wasm

FDP Personal Smart Data Contracts API Architecture

Note: Experimental, not ready for production

Run verifiable JavaScript smart contracts in the edge using QuickJS/Wasm

Introduction

This project is a prototype of how we can create smart contracts and execute them in userspace, that is, in the edge (Browser, Mobile, etc) and maintain verifiable and privacy features supported by Swarm.

Architecture

Node

• JSON-RPC at the edge: Where Web3 apps or extensions send transactions to the edge smart contract server.

Transaction handler

• Transaction Executor: EIP-712 aware transactions are default and API supports EIP-5559 Cross Chain Write Deferral Protocol and EIP-3668 CCIP Read: Secure offchain data retrieval

Smart Contract engine

• FDP Personal Smart Contract: Compiled to QuickJS/WASM, it executes and stores states in a Swarm Sequential Feed, as BMT Chunks with data serialization using BeeSon.

Accounts and data

• Verifiable: BMT verifiable inclusions proofs
• Privacy: FDP provides encrypted data at rest

Use cases

• Data unions
• L1 and L2 data integrations
• Oracles
• Data Privacy

Sample

import { Contract, view, call } from '../Contract'

@Contract()
export class Counter {
  public count = 0

  @call() increase() {
    this.count += 1

    return this.count
  }

  @call() decrease() {
    this.count -= 1

    return this.count
  }

  @view() getCount() {
    return this.count
  }
}

Ideas and inspiration

• Near JavaScript Smart contracts SDK

Maintainers

• molekilla

License

MIT