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I recently bought an Ellipal Titan, I was playing around with it to get used to the wallet.

  1. I created a wallet with 12 mnemonic + passphrase.
  2. I erased the wallet.
  3. I tried to recover the wallet with the same 12 word key + different passphrase.
  4. I was able to recover the original wallet with the different passphrase.

I wonder how this happen. Is it supposed to that way, or Titan is messed up? It seems as though using passphrase does not affect the security at all. Any idea?

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  • This is not supposed to happen, different passphrase should lead to a different wallet
    – Mike D
    Sep 10 at 17:06
  • Did you verify that it was the same wallet or just some wallet?
    – Murch
    Sep 23 at 16:52
  • If I remember correctly, the Ellipal Titan creates two wallets, one with the passphrase and one without. This allows some deniability if needed -- you can claim you didn't even know about the passphrase feature and show a wallet that even has some funds while hiding the real wallet -- the one protected by the passphrase. Oct 24 at 2:26
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Unless they mean password instead of passphrase they are not following bip39 specification. A different passphrase changes the BIP39 seed used to generate the deterministic key chain.

https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki

https://en.bitcoin.it/wiki/Seed_phrase#Two-factor_seed_phrases

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  • OP seems to be talking about the passphrase as something distinct from the seed phrase/mnemonic. I'm speculating, but is it possible the wallet uses the passphrase to encrypt the mnemonic on the device/system? So only the mnemonic defines the wallet, but it's locally protecting the wallet with the passphrase. Sep 14 at 23:12

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