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Never show to somebody your private balance. No matter what.
If you really want show a screen balance, use a decoy testnet.
If is a serious situation when you really have to prove the stake, then use as I said, sign a message from that address, so you prove you are the rightful owner of that address.
Then they can check on eny block explorer the balance of that address.
here is a full guide how to use Electrum and sign a message from a specific address
https://armantheparman.com/electrum/
Thanks for the info, if I where to show them a balance directly it would be on a dedicated wallet with just the amount they need.
Also i'm planning to recicle an old laptop as a air-gapped PC with Tails and Electrum.
Thanks for the guide, I see it works with SeedSigner too, it's pretty cool. I have a raspberry pi so I might try it out.
If I would need to have a proof from somebody else about having that amount, I will always ask to sign a message from that address.
I will never trust any screenshot from a wallet. That is NOT proof.
The only proof is Bitcoin Blockchain.
That's a point of view I didn't consider at first, I just imagined this to be just in person, of course don't trust, verify. 😎
Scenario, you ask me to show my balance:
I can show you a wallet, in person, fine. But no details about which address / UTXo etc, just a stupid screen.
But then after that I go and move the funds to another wallet.
So you will not have anymore the real proof of the address and also option to track to see if I still have the balance in that specific address.
So you can give me whatever I want based on your wrong assumption that I still have that balance.
Also another aspect... IMPORTANT!
Let's say will send you the BTC from that balance...
But then after you go, I will make a RBF/CPFP on that tx and push it with a higher fee to another address of mine. You will not receive the BTC because you didn't wait for 6 confirmations and you have bad assumptions that I have that balance for you.
You just have been scammed.
Remember this aspects.
If you do an onchain tx ALWAYS wait for 6 confirmations.
About showing the amount, given your security concerns I could probably go with a temporary wallet where I just move in the said amount from other wallets and then move them back the originals or to other wallets.
I'm aware of the 6 confirmations of a tx, but wouldn't it be fine to go with Lightning payments in case one need a faster feedback?
LN payments always should be the 1st option. But if the amount is higher, let's say 0.5 or 1BTC, I would go for onchain tx.
Indeed, LN payments are instant settlement. Once are done, there's no way back.
I see, maybe renting a small apartment would be around 0.01~ BTC? That would be fine in LN.
Thanks, the watch-only was just one of the possible solutions I thought of.
This is just a use case that came to mind earlier (lack of sleep) and was wondering how would I go about it.
What I thought was if someone would say "How can I tell you have the money?", after pointing it out it would be enough to show them a screen with the amount they should expect.