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Tokenization

Overview​

The tokenization feature enables the creation of Digital Product Passports (DPP), represented as NFTs on compatible blockchains (e.g., Starknet). These DPPs ensure product traceability, authenticity, and post-sale engagement.

Management of these DPPs relies on:

  • an API for bulk minting via JSON Lines,
  • mechanisms to track status and progress,
  • a JavaScript/React SDK for integration into client-facing interfaces (e.g., user wallet).

Creating DPPs (minting)​

API Endpoint​

POST /v1/applications/:appId/dpp/mint

This endpoint launches a minting job using a JSON Lines file. Each line represents a DppMintData object with an identifier (dppId) and product metadata.

Example JSONL payload​

{
  "dppId": "b7cd08...",
  "metadata": {
    "name": "XYZ Mobile 12",
    "description": "Discover the XYZ Mobile 12...",
    "image": "https://dummyimage.com/...",
    "attributes": [
      { "trait_type": "Ean", "value": "9783161484100" },
      { "trait_type": "Serial number", "value": "SN123" }
    ],
    "external_url": "https://www.example.com/product",
    "creator": "IntegratorID",
    "blockchain": "Starknet"
  }
}

⚠️ The dppId field must be unique and stable. We recommend calculating it using a hash (e.g., SHA-256 of a product identifier).

See the API documentation for more details.

Tracking minting jobs​

1. Single status check​

GET /v1/applications/:appId/dpp/mint/:jobId/status

Returns the current status of the job as JSON.

{
  "total": 10,
  "completed": 7,
  "errors": [],
  "results": [...]
}

2. Live progress updates (SSE)​

GET /v1/applications/:appId/dpp/mint/:jobId/status/sse

Returns a Server-Sent Events (SSE) stream that delivers continuous job progress events. Ideal for real-time UI feedback.

See the API documentation for more details.

SDK Integration​

The JavaScript SDK (Core and React) allows:

  • interacting with the user's wallet,
  • claiming a DPP linked to a minted NFT,
  • verifying and displaying metadata.

Example using React​

import React from "react";
import { useKeybanAccount } from "@keyban/sdk-react";

function DppClaimButton() {
  const [account, accountError] = useKeybanAccount();

  if (accountError) {
    return <div>Error: {accountError.message}</div>;
  }
  if (!account) {
    return <div>Loading account...</div>;
  }

  const handleClaim = async () => {
    try {
      const { transactionHash } = await account.dppClaim("b7cd08dc66...");
      console.log("Claim successful, tx hash:", transactionHash);
    } catch (error) {
      console.error("Claim failed:", error);
    }
  };

  return <button onClick={handleClaim}>Claim DPP</button>;
}

See the React SDK documentation for more details.

Learn more​