Open-sourcing BIP-39 display wordlists in 31 languages

Hi everyone,

I wanted to share an open-source Bitcoin UX project we just published:

https://github.com/osem23/bip39-wordlists-tzur

It is a set of BIP-39 display wordlists in 31 languages: English plus 30 native-language lists.

The goal is simple: let users back up and restore a BIP-39 recovery phrase in their own language, without changing the cryptographic seed.

The seed of record remains the canonical English BIP-39 mnemonic. PBKDF2 still runs on the English form. The native-language lists are only a display and input layer, index-paired to canonical English, so they add no new cryptographic surface.

The repo includes:

30 native-language display wordlists
2048 entries per language
Bidirectional English-to-native mappings
Validation scripts
Test vectors
Documentation
MIT license

Languages include Arabic, Hindi, Bengali, Urdu, Farsi, Turkish, Vietnamese, Thai, Hebrew, Polish, Ukrainian, Romanian, Swedish, Danish, Filipino, Malay, Indonesian, Russian, Dutch, German, Estonian, and others.

Why we built it:

BIP-39 has canonical wordlists for only 10 languages. Most of the world still has to deal with recovery phrases in English or in a language that is not native to them.

We wanted to explore whether wallets can improve recovery UX for non-English users while staying fully compatible with standard BIP-39 flows.

This is not a new seed scheme, not a wallet, not a token, and not a replacement for canonical BIP-39.

It is a display-layer convention for multilingual recovery UX.

We would appreciate review, criticism, native-speaker corrections, and feedback from wallet developers.

GitHub:
https://github.com/osem23/bip39-wordlists-tzur