Nostr Web Client

I wanna level up my BTC security by going multi-sig and giving a bunch of keys (probably in the form of steel seedQRs) to my family members. My plan for getting comfortable with multisig is to use a single SeedSigner and have 3 private keys put onto a paper seedQR, and have xpubs (I’m aware that you need to safeguard all m xpubs) in some other form (also QR?). I’m going to test 2 or 3 multisig on testnet via Sparrow. While this will teach me the mechanisms of sending and receiving with multisig it might not be what I necessarily go with. To elaborate: I understand that not trusting a single manufacturer is recommended for your setup.

1. For my real life setup should I generate private keys + xpubs with other devices like Coldcard, Fountain Passport, etc?

2. Should I not have n (n of m multisig) keys generated from devices by the same manufacturer?

3. How does my learning approach sound?

nostr:npub1az9xj85cmxv8e9j9y80lvqp97crsqdu2fpu3srwthd99qfu9qsgstam8y8 nostr:npub1rxysxnjkhrmqd3ey73dp9n5y5yvyzcs64acc9g0k2epcpwwyya4spvhnp8 nostr:npub17tyke9lkgxd98ruyeul6wt3pj3s9uxzgp9hxu5tsenjmweue6sqq4y3mgl

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Discussion

SeedSigner 2y ago

I like the approach. Learn the basics, get comfortable, and then you can decide what hardware to include in your quorum. I personally would never let a device provide me with a key -- my preferred method is to select the seed words at random and then use a tool to calculate the final checksum word.

Vishal 2y ago

Can you use a single seedQR with multiple multisig quorums without giving up privacy? I guess the basic question here is: can you generate multiple xpubs from a single seed?

redsun 2y ago

No need for any hardware for long term store of value home/family multisig

Do it on mainnet just use (10ksats, hold them for few months then try to restore everything and withdraw them)

on desktop PC:

- generate 4 border wallet keys

- make a 2/4 wallet on nunchuk

- send a transaction

- remove the wallet

- restore the wallet and withdraw funds with 2 keys on Sparrow wallet

C.S.Burner 🪙➡️🔥 2y ago

I have generated all seeds for the multisig scheme by throwing dice or coin. Even though I had different HWs, this gave a good sense of how seeds work. With seedsigner the calculation of the last word has become comfortable. Generating entropy by yourself makes you independent of flaws in device gestated entropy.