Hello,

I saw that the founders of Samourai Wallets were arrested and that the website to download the wallet was frozen. I guess this has made users of this wallet unsecured.
Do you think this can happen to other software wallets ? Especially Electrum ?

Hello,

I wanted to export my electrum xpub key to iCloud, however I exported the wallet file containing the private key. The private key is secured by a password.
I deleted the file on iCloud just a few minutes later.

What advice could you give me now ? Should I recreate a cold private key or my security was actually not too much compromised ?

Thanks

Hello,
I created an offline 2/3 multisig wallet on electrum.
The 3 keys are geographically distributed, however 2 of them are very closely located.
I would like to improve this setup by duplicating one of the private key and either:
- Store it in a 4th location
- Store it offline on my iPhone ? Is it possible ? Encrypt it on my computer ?
Any thoughts ?

Hello,
Let’s say I choose to spend an UTXO with Sparrow, set up the fees (let’s say 10 sats/vb), sign offline the transaction but don’t broadcast it immediately.
And imagine that I broadcast the transaction on the internet only 1 year later, when fees are 100 sats/vb.
What happened then ??
Will the fees be adjusted automatically in order to process my transaction ?
Or will I keep 10 sats/vb ?
Or will my transaction never arrive ?

For example, I first sign a transaction with seed 1. Then I sign this transaction with seed 2. The transaction is valid because it is a 2 out of 3 multisig.
Then I copy the first transaction and signed it with seed 3 this time (instead of seed 2). 
So now I have two signed transaction (actually this is the same transaction). Every signature is done offline on my airgapped computer. 
What « happened » if I then don’t broadcast this or these two transactions over the internet ? Is it ok ?

Hi,
Just a noob question.
I "created" a Linux air gapped computer to create a multisig wallet with Electrum.
Thus I generated the seed through the Linux version of Electrum.
Will I be able to restore the wallet with electrum on MacOS or Windows or should I necessary reuse a Linux version of Electrum ?

I have a noob question but if I reuse an address it will create a new utxo right ? So I will have two utxos in the same address ?

Hello,

I created an electrum 2/3 multisig Wallet on an air-gapped device.
The three seeds are geographically distributed.

I want to verify that I have well written the three seeds.
I have to create a "fake" transaction on electrum then sign it with the first key then export the PSBT then sign it with the second seed ? What about the third seed to check it's correct ?

Is there any other solution to check I own the correct seeds ?

More clearer !
So regarding a future transaction I should only take into account UTXO and not TXO right ?
Fees will be determined by UTXOs
Any idea how minimum satoshis should a UTXO contain in order to be spendable so that fees don’t exceed the UTXO balance ? maybe fees in the future will be so high ?

In the tab Coins in Electrum and in the tab UTXOs in Sparrow wallet I have only one UTXO
However on the website blockchain.com it's written output count 4 and unspent output count 1
Is ist normal ? What's the difference between output count and unspent output count ?

Hello,

Where can I find the number of UTXOs my receiving address contain ? Is there any website ?

If I reuse an address to receive bitcoin will it count as a second UTXO ?

Thanks,

Hi,

I was about to generate an offline seed on, however, the computer which was supposed to be used is running on windows 8.1 and Electrum does not longer support 8.1
I specifically used this computer because its wifi card is dead.

How can I do ? Is is the same if I turn off wifi on a more recent PC ?

Any tips for generating seed offline without buying a new machine ?

Would you advise me to create the three seeds through the electrum software or through https://iancoleman.io/bip39/ (BIP39) ?
What would you be the pros and cons of each method?
Thanks!

Yes I mean via block explorer.
Yes entire balance

Otherwise, just paste your MultiSig address and it'll search just like in SingleSig addresses.
[/quote]

you mean reception address right ?

with a singlesig wallet, I can check my balance on the internet thanks to the pub key.
Will it be the same with a multisig as there will be 3 pub keys instead one ?

OMG it is working thanks a lot !!
I am quite new to Python and Programming Bitcoin, any idea where I should start ? which books ?
Thanks !!

Hello,

I would need some help on Python:

I am trying to import helper package on Python with module hash256 like the colored lined of the below code however it’s not working.

from ecc import S256Point, G, N
from helper import hash256
e = int.from_bytes(hash256(b'my secret'), 'big')
z = int.from_bytes(hash256(b'my message'), 'big')
k = 1234567890
r = (k*G).x.num
k_inv = pow(k, N-2, N)
s=(z+r*e)*k_inv%N
point = e*G

print(point) # S256Point(028d003eab2e428d11983f3e97c3fa0addf3b42740df0d211795ffb3be2f6c52, \ 0ae987b9ec6ea159c78cb2a937ed89096fb218d9e7594f02b547526d8cd309e2)
print(hex(z)) # 0x231c6f3d980a6b0fb7152f85cee7eb52bf92433d9919b9c5218cb08e79cce78
print(hex(r)) # 0x2b698a0f0a4041b77e63488ad48c23e8e8838dd1fb7520408b121697b782ef22
print(hex(s)) # 0xbb14e602ef9e3f872e25fad328466b34e6734b7a0fcd58b1eb635447ffae8cb9
Or do you have an idea to do a double sha256 (it is hash256)?

I tried this:

from hashlib import sha256 as h

print(h(h("my secret".encode()).hexdigest().encode()).hexdigest())
It's almost working however the result does not match as it is not starting with 0x.

Hello,

I am going to create a 2-3 multisig wallet with electrum.

Will I be then able to spend funds with other wallets than Electrum ? Or will my wallet only work with Electrum ?

Many thanks,
Regards

Hi,

I am interested in creating a 2-3 multisig wallet.

I want to keep things offline but as far as I know I have to write 3 seeds + 3 pub keys.

I can write the 3 seeds on a paper with a pen but what about the pub keys
Too many characters and a huge risk of mistyping.

Any solution/idea ?

Thanks everyone, I started here:

https://www.youtube.com/watch?v=eWRfhZUzrAc&t=6155s