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Seed XOR

Advanced/Tools > Danger Zone > Seed Functions > Seed XOR > Split Existing

Official SeedXOR Docs here

Seed XOR Does Not Strengthen a Seed

Splitting a seed does not add entropy, remove its exposure history, or repair a seed covered by the current advisory. Check the current security status and follow the migration guide before splitting an affected seed. For an amount whose loss would be materially harmful to you, first create the seed on fixed firmware using the standard Dice Rolls option and use a strong, unique BIP-39 passphrase. Seed XOR splits only the seed words; preserve the passphrase separately and test recovery with the intended set of XOR parts before depositing funds.

Last update: August 30, 2026