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r/Bitcoin: 2-of-2 multisig versus single-sig with a passphrase

reddit-duosig-versus-passphrase

https://www.reddit.com/r/Bitcoin/comments/1vgizkf/with_all_the_talk_about_passphrases_doesnt_a_22/

Organisation
reddit
Evidence role
Community discussion
Published
not established
Source changes
0
Detected differences
0
Unreviewed
0
Copies held
1

Every check is recorded, including checks that found no text change. A detected edit is therefore bounded between two checks. The publisher's exact save time is not observable from this record. Last checked .

  1. Earliest copy held Current
    seen · Captured here 12,040 chars
    Extracted text as captured
    post: 1vgizkf
    author: bullett007
    created_utc: 1785961622
    title: With all the talk about passphrases, doesn't a 2-2 multisig make more sense?
    body:
    **Single sig vs "Duosig".**
    
    **2-2 Multisig Positives v singlesig+passphrase:**
    
    * Two secrets both containing at least 128 bit of entropy eliminating weak entropy passphrases.
    * Both secrets contain checksums.
    * Avoids having to type long-string passphrases on a small hardware signer display.
    * Avoids the requirement of collating two secrets on a single device for transaction signing.
    
    **2-2 Multisig Negatives v singlesig+passphrase:**
    
    * Higher transaction fees.
    * Multisig Descriptor backup.
    * Key Redundancy - however, there is also no key redundancy in single sig+passphrase.
    
    Anything else I'm missing?
    
    comment: p1xi6jg
    parent: t3_1vgizkf
    author: flutecop
    created_utc: 1785962319
    edited: false
    body:
    I've never used multisig. But isn't it the case that you wouldn't need to backup the descriptor in a 2 of 2? If you have all the signatures in the quorum the descriptor can be rebuilt.
    
    comment: p1xjl42
    parent: t3_1vgizkf
    author: tippiecat
    created_utc: 1785962697
    edited: false
    body:
    I don’t think it matters, unless it helps your mental health to add layers of security. But, it doesn’t make a difference if your private keys are exposed. The coldcard situation is not that the wallets were hacked. The problem is they generated private keys using mnemonics that were way too easy to guess. In this case, the private keys were accessible so number of required wallet signatures wouldn’t even make a difference. 
    
    comment: p1xk5fj
    parent: t3_1vgizkf

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