How do I trace and recover my stolen BTC or ETH?

Recovering stolen BTC or ETH can be challenging due to the decentralized and pseudonymous nature of cryptocurrencies. However, here are some steps you can take:

1. **Report to Authorities:** File a report with your local law enforcement. While they may not have direct jurisdiction, it's important to create an official record.

2. **Exchange Notification:** If the theft involved an exchange, report the incident to the exchange. They might be able to track and freeze the stolen funds.

3. **Blockchain Analysis:** Use blockchain explorers to trace the movement of your funds. This won't necessarily reveal the identity of the thief but can provide insights into where the funds are going.

4. **Cybersecurity Expert:** Consult with a cybersecurity professional or a firm specializing in blockchain security. They may have tools and expertise to trace and recover stolen cryptocurrencies.

5. **Social Media and Forums:** Monitor social media platforms and cryptocurrency forums for any information related to your stolen funds. Sometimes, thieves try to sell or move stolen assets in these communities.

6. **Insurance:** If you have cryptocurrency insurance, contact your insurance provider and follow their procedures for reporting a theft.

Remember, the chances of recovering stolen cryptocurrencies are generally low, so it's crucial to prioritize security measures to prevent such incidents in the first place. Always use hardware wallets, enable two-factor authentication, and stay vigilant against phishing attempts.