Level 4

This level has very complex setup options, using advanced software/hardware wallets, an offline computer, and a Gnosis Multi-Signature Wallet. This section is only recommended for expert users who are very technical or have a lot of funds to protect.

3 of 5 Gnosis Multi-Signature Wallet, Using an "Offline Computer" 🌨

1. Setup/boot your Air-Gapped Offline Computer.

2. Boot Tails OS via USB on your Offline Computer.

3. Setup 5 Level 2 software or hardware wallets. Record those 5 account addresses offline.

4. Boot your Online Computer.

5. Open https://wallet.gnosis.pm/ in a secured browser.

6. Use your Ledger Nano S to activate the wallet dApp.

7. Select “new”.

8. Specify your 5 account addresses as the owners of the wallet.

9. Specify a daily limit. Keep it reasonable.

10. Deploy the Wallet contract.

11. Test a small submitTransaction transaction withdrawal with all 5 accounts, with the destination set to the account used.

    • By following this withdrawal process, hackers can see that you have potentially read this article and are following these instructions.

12. Once all accounts successfully have withdrawn a small amount of funds from the wallet, deposit an amount slightly larger than the Daily Limit.

13. Attempt a 3-signature withdrawal from the multi-signature wallet.

14. Now you can use that multi-signature wallet as your cold wallet.