Thank you all for your help. Unfortunately, I forgot to ask an important question in my first post:

Can the task of signing a message with my address - so that I can prove I am the owner of a transaction - be done
after the transaction has taken place? For example, if the recipient complains a week later that I am not the person
who initiated the transaction, can I still sign a message at that point?

Please note that I am using Electrum on Tails without persistence, so I would need to recover my Electrum wallet
from the seed.


Thank you!

Hello.

Is there a way to prove that I was the person who sent money to a specific Bitcoin address?
For example, if it is not enough to simply show that a transaction over the amount of 123 arrived at
that address, but if it is required to prove that I am the "owner" (sender) of the Transaction?


Thank you!




PS
I am using Electrum on Tails without persistence, but I did make a backup (Files -> Save backup -> Backup Directory)

 

What are the chances of accidentally sending satoshis to an incorrect (but in use) BTC address, if a single character is mistyped in a Bech32 (SegWit) address?


Thank you!

Thanks, everyone, for your help! I had to test several configurations, including with and without scanning the QR code and rebooting the OS. In the end, it turned out to be a missing or incorrect prefix.

Thanks to this message, it became clear that the problem was probably with the address that was entered incorrectly.
.
An additional uncertainty was that I had entered the wrong public key into blockchain.info and received no clear error message, so for a while I thought I had previously sent all my BTC balance to a wrong address, for example, the one of my one paper wallet.


p2wpkh was the solution

Thank's again for your great help!

Good to know!


Why do you suggest using cold storage? Is it because that's the safest approach if I'm running Electrum on Tails without persistence?

You are right, I have asked similar questions in the past. However, I can assure you that today is the first time
I have had real-world experience with Bitcoin.


In this case, my focus was on whether the initial connection duration of Electrum with the Internet/node/blockchain
has any influence on whether BTC funds can be lost.

Thank you very much for your patience and the good answers. I have learned a lot from them

Hello

My understanding was that, after creating a new Electrum wallet (on Tails), Electrum would prompt me to write down the seed as one of the first steps. However, in my case, this was different...

I did the following steps:
-> Create/Restore wallet -> default_wallet -> Import Bitcoin Address or Private Key (scanned the QR code of the paper
wallet with an USB cam)  -> Wallet -> Private Keys -> Sweep -> scanned the QR code with an USB cam


Error message:
"sweep no input found"


Question:
What I am doing wrong?


Thank you!

Hello

I am wondering what could happen to my BTC funds under the following circumstances...



1.
creating a new wallet in Electrum (on Tails with NO persistence, that means a Linux Live System)


2.
writing down the 12 word seed


3.
sharing the wallet-address to a donor


4.
donor send BTC to my (wallet) address



5.
Power outage of my PC running Electrum (on Tails with NO persistence)



Question:

Does it depend on how long the PC running Electrum on Tails (with NO persistence) was connected to the
internet/blockchain (before the power outage happened), whether my Bitcoins are lost or not?




Thank's a lot!

Hello

Many years ago, I bought a fraction of Bitcoin at a Bitcoin ATM. Now, I intend to
sweep the entire amount from the paper wallet into Electrum running on Tails
(without persistence).

The private Keys do start with K and L.



Questions:
1.
Can I blindly trust and follow this guide?
https://bitcoinelectrum.com/sweeping-your-private-keys-into-electrum/


2.
Does that mean, after creating a new Electrum wallet and writing down the automatically
generated new seed, the computer could be rebooted without loosing any funds?



Thank's lot in advance for any feedback!

.
.
PS:
After the funds have arrived in Electrum, I will transfer them to the Relai app, which is
linked to my IBAN bank account. This makes trading very easy.

Hello

started with Bitcoin about in year 2020 using BRD wallet app and never touched it again. Today I would like to recover my funds into
Electrum of Tails (no persitance) in order to make a donation to GraphneOS.

I will recover the funds into Electrum like shown here:
Recover BRD Wallet (BreadWallet) in Electrum
https://bitcointalk.org/index.php?topic=5204223.0


Question:
Since I am not going to donate the entire BTC funds to this foundation I am wondering what will happen with the rest if I am
going to shutdown Tails..

Are the non spent/donated funds lost this way? What precedure do you recomend?


Thank's a lot in advance,

Hello,

why once a seed(created originally in BRD) is imported into a new Electrum wallet, a new seed should be generated ?

Thank you!

Hello,

does restoring BTC-funds with 12 word seed restore old transactions as well?


Thank you!

An offline device means to me something like a Trezor..

How can a transaction be signed on an offline device and why that is needed?


Thank's in advance for additional help!

My paper wallet was made by Bitcoin ATM machine. In general, are you concerned that I could loose my funds during sweeping the paper wallet into Electrum (preinstalled on Tails) or are you more concerned about privacy?

Thank you!

Why sweeping the private key of a paper wallet isn't a good idea?

Hello

I intend to sweep funds from a paper-wallet and other funds from an old BRD-wallet (12 words known) into Electrum (preinstalled on Tails).


1.
Do I have to care something about during start/setup of Electrum (Tails) if I inted to make a donation to https://grapheneos.org/donate
(there are different addresses listed/suggested at https://grapheneos.org/donate and I don't know which address-type to use) ?




2.
Sometimes in the future I will be required to show simple Bitcoin tasks to an audience. That means a transaction (of about 5 USD) to a
person of the audience should be confirmed withhin about 5-10 minutes. Should i use Bech32m (Taproot) addresses for such a demo?



Thank's in advance!

In an answer of a topic which does not really relate to my question, the following is written:



Question:
How does it work to connect to my own fullnode without IP? Copy the the transaction physically to the full node, e.g. by using an USB stick?

Hello

in a thread with an other subject, a person pasted the follwing statement:



Why is that the case? Does a mixer try to follow the entire way of Bitcoin funds, and if the "path" is intransparent,
mixing is not performed?

Hello,

1.
Is it recommended to generate a new seed after importing funds (with the help of the 12 word phrase from BRD wallet)
to Electurm?


2.
The same, if funds from a paper wallet are sweeped to Electrum?


Thank you!

Hello,

for the case there should be a power outage, will the entire blockchain be downloaded again or only the changes (since the outage)?


Thank you!