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Exchange integrations use the Wallet SDK, the Canton Network Token Standard, and the Ledger API to implement deposit and withdrawal workflows for Canton Coin and other CN tokens.

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Integration Support Code

Use the following support code to simplify your integration development:
  • JavaScript/TypeScript — Use the functions from the Wallet SDK to simplify building your integration
  • Java/JVM — Use the sample code from the ex-java-json-api-bindings repository as a starting point
  • Other languages — Use the Wallet SDK or Java sample code as a blueprint

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Wallet SDK (TypeScript)

The primary integration library. Install via npm: 
npm install @canton-network/wallet-sdk
The SDK provides:
  • Token Standard transaction preparation and parsing
  • Transfer preapproval management
  • Transaction history ingestion helpers
  • Scan API client for reading Canton Coin registry data

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Java Sample Code

The Java sample repository demonstrates how to interact with the JSON Ledger API from JVM languages:

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Integration Milestones

The exchange integration guide is structured as incremental milestones:
  1. Canton Coin (CC) with 1-step withdrawal — Deposit and withdrawal of CC using TransferPreapprovals. Includes earning app rewards for CC deposits.
  2. All CN Tokens — Support for all Canton Network tokens (not just CC). Adds multi-step transfers that give receivers the choice to reject incoming transfers and enable asynchronous checks (KYC/AML).
  3. App rewards for all CN tokens — Earn application rewards on both withdrawals and deposits of all CN tokens, with optional reward sharing with customers.

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Next Steps