Questions tagged [mnemonic-seed]

Mostly BIP39, an open standard for encoding a seed as a series of common words, but also collects other methodologies.

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Trezor Custom Mnemonic

How do I go about using words I pick in a trezor seed? I only want words that I select and in an order I select. I'm not worried about this being a less secure way to generate a seed. I will be doing ...
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1answer
443 views

How can I recover last word of BIP-32/39 mnemonic copay second signature multisig wallet

I've got a multisig 2of2 wallet in copay. I've one wallet correct but have lost second wallet and only have 11 of the 12 words of the seed.I'm pretty sure I miss the last one. I've got some of the ...
6
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1answer
3k views

Recovering a HD wallet from a partial seed phrase

I am attempting to help recover a wallet where the owner only wrote down 11 of the 12 words in the seed phrase. Initially, I thought the task would be a quick and well-defined, but it appears to be a ...
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0answers
671 views

In the BIP39 specification, are seeds generated from encoded or decoded passphrase?

From the BIP39 spec: From mnemonic to seed A user may decide to protect their mnemonic with a passphrase. If a passphrase is not present, an empty string "" is used instead. To create a ...
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1answer
621 views

Ramifications of creating Electrum 2.x seeds which are not BIP39

Electrum 2.0 seeds (mnemonic phrases) are created with a checksum based algorithm (such that the hmac_sha512 starts with 01. It's usually a 13 word seed, but can be 12 in some circumstances. If all ...
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2answers
718 views

Is it safe to store a sha256 hash of my BIP39 seed on the blockchain?

According to https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki a 12 word BIP39 passphrase has entropy of 128 bits. My reason for doing so is that when I want check if I memorized my ...
2
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1answer
238 views

BIP39 Japanese Mnemonic vector unit test process

There is a json for unit tests of Japanese characters which I want to validate using Python, specifically with this fork of pybitcointools, which has bip39 functionality. Unit tests from Trezor's ...
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4answers
2k views

Electrum 2.0: non-BIP39/32 standardisation complicates matters immensely. Why?

Electrum 2.0 has been causing me some frustration, insofar as it seems to be a non-standard implementation of BIP32/BIP39 (HD wallets, mnemonic seed, respectively). The wallet in question is a 2of2 ...
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1answer
1k views

Why are Electrum 2.x mnemonic sentences thirteen words long?

The 2.x version of Electrum uses mnemonic sentences that are 13 words long. However, 1.x versions use a sentence only 12 words long. I realize that 2.x changed the derivation of key pairs ...
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1answer
437 views

Matching KeyPath in application with Wallet32 Keypath for Bip44 wallets

I have an application where I create an HD wallet with a passphrase and save the public master key to the database for the user. Then, I want the user to be able to back up the wallet to their own ...
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2answers
5k views

Pros/Cons/Limitations of Mnemonic Phrases - BIP39

BIP39 mnemonic phrases replace considerations about how to store one private key, with considerations about how to store the seed to a series of private keys. The idea is that the private keys are ...

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