slip39 1.1.0

The slip39 module implements SLIP39 recovery for Ethereum accounts

Creating Ethereum accounts is complex and fraught with potential for loss of funds.

A BIP-39 seed recovery phrase helps, but a single lapse in security dooms the account. If someone finds your recovery phrase, the account is /gone/.

The SLIP-39 standard allows you to split the seed between 1 or more groups of multiple recovery phrases. This is better, but creating such accounts is difficult; presently, only the Trezor supports these, and they can only be created “manually”. Writing down 5 or more sets of 20 words is difficult and time consuming.

The python-slip39 project exists to assist in the safe creation and documentation of Ethereum HD Wallet accounts, with various SLIP-39 sharing parameters. It generates the new wallet seed, generates standard Ethereum account(s) (at derivation path =m/66’/40’/0’/0/0= by default) with Ethereum wallet address and QR code, produces the required SLIP-39 phrases, and outputs a single PDF containing all the required printable cards to document the account.

On an secure (ideally air-gapped) computer, new accounts can safely be generated and the PDF saved to a USB drive for printing (or directly printed without the file being saved to disk.)