> For the complete documentation index, see [llms.txt](https://help.tokenpocket.pro/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.tokenpocket.pro/en/wallet-faq-en/btc-wallet/how-to-backup-bitcoin-private-key.md).

# How to backup bitcoin private key?

Best solution: print ten copies of the mnemonic when there is no camera and you have only yourself with you. Put them in a plastic bag to keep them dry. Keep them in a safe place.If possible, you can also laser etch them on the stainless steel plate. 

The next best solution: you can copy them manually, be case-sensitive, and keep them neat. To be careful, you can copy them twice and store them in a plastic bag in a safe place.

Other networking situations, cloud storage or stored in the phone album are likely to be lost or stolen.