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Add the following environment variables to your .env file: 
OTIM_APP_ID=
OTIM_PRIVATE_KEY=
OTIM_PUBLIC_KEY=
OTIM_API_KEY=
OTIM_ENVIRONMENT=
For setting OTIM_ENVIRONMENT, there are 2 options:
  • production: mainnet chains
  • sandbox: testnet chains
Now, set up and initialize your Otim server client: 
  import { chains, createOtimServerClient } from '@otim/sdk-server';
  import dotenv from 'dotenv';

  dotenv.config();

  async function main() {
    const client = createOtimServerClient({
      appId: process.env.OTIM_APP_ID,
      privateKey: process.env.OTIM_PRIVATE_KEY,
      publicKey: process.env.OTIM_PUBLIC_KEY,
      apiKey: process.env.OTIM_API_KEY,
      environment: process.env.OTIM_ENVIRONMENT
    });

    await client.init();
    
    console.log('Otim server client initialized successfully');
  }
  
  main().catch((error) => {
    console.error('Error:', error);
    process.exit(1);
  });
Simply check that you’re authenticated by calling the following: 
  const me = await client.auth.getCurrentUser();
  console.log('Me:', JSON.stringify(me, null, 2));