Split BIP39 mnemonics using Shamir's Secret Sharing Scheme
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Ian Coleman
Latest commit 30d17d8 Oct 4, 2017


Shamir39 Tool

A tool for converting BIP39 mnemonic phrases to shamir secret sharing scheme parts whilst retaining the benefit of mnemonics.

Online Version


Standalone offline version

Download standalone.html

Open the file in a browser by double clicking it.

This can be compiled from source using the command python compile.py




Since this project is the efforts of many people, most of which don't appear in the obvious places like code or issues, donating to the project itself causes significant operational difficulties.

As a result, if you would like to support this project financially you are encouraged to donate to one of the many groups that makes the internet a place amenable to projects such as this one.

Donation-accepting organizations and projects

If the list is too difficult to choose from, the EFF is a good choice.

Electronic Frontier Foundation

or for a direct bitcoin address, consider donating to the Free Software Foundation at 1PC9aZC4hNX2rmmrt7uHTfYAS3hRbph4UN

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Making changes

Please do not make modifications to standalone.html, since they will be overwritten by compile.py.

Make changes in src/* and apply them using the command python compile.py




This Shamir39 tool is released under the terms of the MIT license. See LICENSE for more information or see https://opensource.org/licenses/MIT.