Mycelium 2.0 HD - Welcome to the future

[BitGroin]

I recently reset my phone to factory condition and forgot I had Mycelium with a small share of a bitcoin on it. Not too much, so it won't really harm me if it's lost, but enough to be annoying.

Went looking through my notes for a backup and found something in this form created in July 2014 with whatever version of Mycelium was current at the time:
xxx xxx xxx xxx xxx x
Every x is a seemingly random capital letter. After re-installing Mycelium, I can't find a way to enter this as a seed code, instead it asks for a word list of at least 12 English words.

Does anyone recognize what this backup code is and can tell me how to use it?

[1714861208]

1714861208

[1714861208]

1714861208

[1714861208]

1714861208

[1714861208]

1714861208

[1714861208]

1714861208

[cetus]

…
xxx xxx xxx xxx xxx x
…
Does anyone recognize what this backup code is and can tell me how to use it?

This code is for an old style paper (PDF) backup.  If you have it, look for the encrypted key QR code in it, scan it with Mycelium, and it will ask you for this code.  This code is useless without the printout or PDF.

If you can’t find the printout, chances are you may still have the PDF somewhere, as it was generated at the same time as this code.  The file name pattern is mycelium-backup-*.pdf, where * stands for the date and time.  It may even be somewhere on an SD card or some data partition which is not cleaned by a factory reset.

[BitGroin]

Thanks! Very helpful.

[Stephan1973]

Hello guys and girls. I want to mine bitcoin with Hashflare. So i made a Mycelium bitcoin wallet. Now i have this little problem... This is so confusing to me; What address do i have to provide to the mining application when they ask for wallet address ? is it the mycelium public key in Account button or the key that is shown in Receive button

Thanks in advance guys/girls!! Your help is much appreciated.

[PilotofBTC]

Hello guys and girls. I want to mine bitcoin with Hashflare. So i made a Mycelium bitcoin wallet. Now i have this little problem... This is so confusing to me; What address do i have to provide to the mining application when they ask for wallet address ? is it the mycelium public key in Account button or the key that is shown in Receive button

Thanks in advance guys/girls!! Your help is much appreciated.

Your receive address.  Keep in mind, it will change every time you receive bitcoin. But, all the addresses remain valid.

[birr]

Might want to use a legacy (static) address for that, especially with fees so high now.

[TryNinja]

Might want to use a legacy (static) address for that, especially with fees so high now.

Why? I thought multiple addresses didn't increase the fee because multiple payments are always counted as a new input regardless of the number of different addresses?

[birr]

Might want to use a legacy (static) address for that, especially with fees so high now.

Why? I thought multiple addresses didn't increase the fee because multiple payments are always counted as a new input regardless of the number of different addresses?

Maybe I'm wrong about the fees.  I was thinking that sending from a single address would use a smaller transaction than sending from multiple addresses.

[PilotofBTC]

Might want to use a legacy (static) address for that, especially with fees so high now.

Why? I thought multiple addresses didn't increase the fee because multiple payments are always counted as a new input regardless of the number of different addresses?

Maybe I'm wrong about the fees.  I was thinking that sending from a single address would use a smaller transaction than sending from multiple addresses.

I'm pretty sure the inputs are the same size whether they come from one address or multiple addresses. So, the size of the transaction should be the same either way.

But, don't make the mistake I made by creating a new "Account" (derivation path) for your mining or small receives, because then when you spend from you main wallet account, it can't grab a small output from the other account to fill the tx if needed, and will have to break up a larger output you might have sitting in the main account.

[HCP]

Maybe I'm wrong about the fees.  I was thinking that sending from a single address would use a smaller transaction than sending from multiple addresses.

Yes, you are wrong. The data size of the transaction has nothing to do with the addresses being used. It is all to do with the number of inputs and outputs. So, a transaction that uses 10 inputs from 1 address, will likely have the same data size as a transaction that uses 1 input from 10 addresses... they both have 10 inputs.

There will be some variation depending on compressed vs. uncompressed addresses and legacy vs. segwit, but in general it won't matter (from a data size perspective) if you used one address or 100 addresses.