Canton QuickStart (cn-quickstart)

Overview

cn-quickstart is the recommended starting point for building on Canton: a reference app that runs a complete stack locally. It includes a Daml model, a Java backend, a React frontend, a LocalNet with simulated Global-Synchronizer nodes, and developer tooling. The demo implements a software-licensing workflow — an App Provider issues licenses to App Users, who request renewals and pay with Canton Coin — exercising the core production patterns: multi-party agreements, propose-accept, and token transfers.

What you get

• A simulated Canton Network (super-validator + sequencer + mediator)
• An App Provider participant running the licensing app
• An App User participant with a wallet
• A React frontend (provider + user roles) and a Java backend (Ledger API + PQS)
• Canton Coin wallets for traffic purchase and payments
• lnav log analysis for debugging

Project structure (the mediated stack)

• daml/ — contract templates, compiled with dpm build
• backend/ — Java service using generated bindings + PQS (repository/, pqs/ modules)
• frontend/ — React app consuming the backend's REST API (no direct Ledger API → no bindings needed)
• LocalNet — validators, PQS, JSON API, wallet services via Docker Compose