Thanks a lot for all the help, I think I finally have some understanding of fees and the mempool!!

I think I understand that part. If you look at the transaction

There are 2 inputs, both with the same address. One is that 0.1BTC which is transferred to that other address and the other is 0.036BTC from which the fee is subtracted and "OutputB" is the same address as InputA/B, which makes sense. But the question is, why 2 inputs?, why not just one input with 0.1BTC + fee? And also, why is that second input 0.036BTC, which is a lot more than the fee

One last question. In this image you see a part of the transaction. The thing that I don't understand is that I move 0.1BTC (InputA) but there is also an InputB with 0.03..BTC. Both InputA and InputB are the same address. OutputA is the address I moved my BTC to, and OutputB is the same address as InputA/B (minus the fee). Why is there 0.03 added to the transaction? Why not just 1 input of 0.13BTC?

Thanks for the answers. Waiting sounds like the best option for now

I'm using Coolwallet. The problem with this wallet is, that it is not BIP39, but something else. So I'm not sure if my seed will work with an other wallet like Sparrow or Electrum

Hello

I have a question about transaction fees. I think I did a transaction for which the transaction fee was lower than the Low Prio fee (mempool.space). It is now +/- $15 and I think I payed +/- $10. That amount was suggested by my app and I accepted it blindly. I did not expect it to be so low. Anyway, the question I have is, what will now happen with that transaction. Is my btc lost in transit forever?

Unfortunate, in my app I don't have the possibility to bump the fee

One final question. As the fee is expressed in sats/vb. How do I know how many vbytes my transaction is?

I think multisig sounds perfect for my HODL strategy! I hope that my Keystone pro supports this!

Thanks a lot for all the replies, it was really helpful!!

I was trying to setup a hardware bitcoin-only wallet. I had, for the generation of the seed, 2 options: single and Shamir seed backup.

I noticed that the single seed had 24 words and the Shamir 20. This made me wonder which of them is hardest to guess/hack.

In case of a single, 24 words seed, one has to guess 24 words. But how does this work with Shamir? Suppose you have setup a Shamir with 3 shares and a threshold of 2. Do you have to guess 20, 40 or also 24 words (or something else) to hack it?

This also brings me to Multisig. If you require two seed to sign a transaction, does this mean that an attacker needs to guess 48 words in total, or can this whole multisig process be reduced to an other set 24 words?