Add Informational BIP: Multilingual mnemonic display and input conventions#2192
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osem23 wants to merge 2 commits into
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Add Informational BIP: Multilingual mnemonic display and input conventions#2192osem23 wants to merge 2 commits into
osem23 wants to merge 2 commits into
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jonatack
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Jun 6, 2026
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This adds an Informational BIP draft, "Multilingual mnemonic display and input conventions."
A display wordlist is a 2048-entry list in a target language, index-parallel to the canonical English BIP-39 wordlist. PBKDF2 runs only on the canonical
English mnemonic; native-language renderings are a display and input layer with no new cryptographic surface; every seed produced under the convention is
restorable in any BIP-39 wallet via its English form.
Reference implementation (MIT): https://github.com/osem23/bip39-wordlists-tzur
It ships 30 index-paired display wordlists with bidirectional mappings, the 10 canonical BIP-39 wordlists preserved byte-for-byte for spec comparison, a
reference validator enforcing every MUST clause, reference decoders in Python, JavaScript, and Swift producing byte-identical seeds, and per-language
conformance test vectors across the five BIP-39 entropy lengths.
Shipped in production by the TZUR Wallet suite (iPhone and Windows).
Per BIP-2, announced on the bitcoindev mailing list (post pending list moderation; archive link to follow).
I have not self-assigned a BIP number. License: BSD-2-Clause (document), MIT (reference implementation).