BrainArk Enterprise API

curl https://rwa.brainark.online/api/v1/write/... \
  -H 'X-API-Key: rwa_live_1adda180d5dab754...' \
  -H 'Content-Type: application/json'

{
  "event": "asset.issued",
  "timestamp": 1721203200000,
  "orgId": "org_ef64296f...",
  "txHash": "0xa887c3d1...",
  "blockNumber": 12741900,
  "data": {
    "tokenId": "73",
    "from": "0x0000000000000000000000000000000000000000",
    "to": "0x0913915e4e0ad31c27CcC0dF108f0bF9C70781eE"
  }
}

const crypto = require('crypto');

function verifyBrainArkSignature(rawBody, signature, secret) {
  const expected = 'sha256=' +
    crypto.createHmac('sha256', secret)
          .update(rawBody)
          .digest('hex');
  return crypto.timingSafeEqual(Buffer.from(signature), Buffer.from(expected));
}

app.post('/webhook/brainark', express.raw({ type: 'application/json' }), (req, res) => {
  const sig = req.headers['x-brainark-signature'];
  if (!sig || !verifyBrainArkSignature(req.body, sig, process.env.WEBHOOK_SECRET)) {
    return res.status(401).json({ error: 'Invalid signature' });
  }
  const event = JSON.parse(req.body);
  // process event.event, event.data ...
  res.json({ received: true }); // respond 2xx within 5s
});

import hmac, hashlib, json, os
from flask import Flask, request, jsonify

WEBHOOK_SECRET = os.environ['WEBHOOK_SECRET']

@app.route('/webhook/brainark', methods=['POST'])
def webhook():
    sig = request.headers.get('X-BrainArk-Signature', '')
    body = request.get_data()
    expected = 'sha256=' + hmac.new(
        WEBHOOK_SECRET.encode(), body, hashlib.sha256
    ).hexdigest()
    if not hmac.compare_digest(sig, expected):
        return jsonify(error='Invalid signature'), 401
    event = json.loads(body)
    return jsonify(received=True)

<script src="https://rwa.brainark.online/sdk/brainark.js"></script>

const BrainArk = require('./brainark.js');

const client = new BrainArk({ apiKey: process.env.BRAINARK_API_KEY });

// Issue a single asset
const { tokenId, txHash } = await client.issueAsset({
  assetType: 'Real Estate',
  name: '123 Main St',
  description: '3BR property',
  stakedAmount: '0.5'
});

// Batch issue
const batch = await client.batchIssue({
  assets: [
    { assetType: 'Bond', name: 'Corp Bond A', description: '5Y fixed' },
    { assetType: 'Bond', name: 'Corp Bond B', description: '3Y float' }
  ]
});

// List on marketplace
await client.listAsset({ tokenId, priceInBAK: '2.5' });