Just an update if anyone is interested.

Tried my damndest to use Electrum on my laptop and Android tablet to use the air-gapped signing method and Electrum would absolutely not recognize my transactions properly and never presented me with a "Sign" button on the Android app when scanning the finalized, unsigned transaction from my laptop.  Will never use this POS wallet again.

Used Mycelium on my new tablet, swept my wallets and sent them.  It handled my big daddy (35 inputs, ~3500 vB in size) like a champ, close to US$800 in Tx fees for quick confirmation.

My BTC is now all snug as a bug in a rug on my BIP39 seed (Billfodl backed-up) now, love my new Ledger Nano X.  

Mycelium comes through just like it always did.

All the best and thanks for being here everyone.

Oh man, thanks for that!!!

Just one clarification, do I "import" the private key to Electrum or do I "sweep" it, which are two different things as far as I can gather?  No idea how to actually connect Electrum to my Ledger (which I don't have yet).

Thanks so very much!

Thanks very much for your help and patience.  I don't have an issue with doing what you suggest as I've already prepared a couple of "test wallets" with small amounts.   Creating 3 different wallets on electrum then importing my private key to all three, etc. as you gents explain is where I start to sweat colors and not just sweat.  I'm quite scared in general but the procedure explained to me to be able to do this in electrum is freaking me out and beyond my ability or self-confidence.

I generated the p2sh SegWit Wallet offline intially with a downloaded web site from  https://segwitaddress.org/ and then received all the inputs over time.  These inputs are comprised of all 3 formats but my total balance in my wallet is a total of all of these?  Does that make sense?

No, this paper wallet was generated offline with a downloaded web site from  https://segwitaddress.org/.

This would be done on a brand new Android tablet that will only be used to download Mycelium onto it.  Then the transaction would occur.

From the looks of things using electrum and all that entails (from my other post in the Bitcoin Technical Forum) is equally risky for a technically-inept n00b like me.  

I'm considering a fresh machine with a fresh Mycelium installation less risky than setting-up 3 wallets on electrum (3 different derivation paths), importing the key to each (?) and doing the transaction because an offline transaction with Electrum is beyond me.  From what I gather I cannot use QR codes in Electrum for this transaction because of the size? 

Just trying to find the most dependable and viable option because the electrum option could be just as dangerous if not more so for an idiot like me.

Thanks very much for that explanation.  So then I would "import" the private key 3 times, once to each one of the new wallets?  Thanks for being so patient and for the amazing help!



This is completely beyond my ability.

Of course but I've been given no reason why Mycelium can't handle this transaction and will calculate transaction fees properly?  I have experience scanning a private cold storage wallet and sending it but the electrum thing is beyond me.

With the apparent complications in using Electrum for this, which is beyond any tech ability and confidence I have, I'm just thinking of using Mycelium to sweep the private key, executing a transaction and taking my chances?

I installed wget and was able to download and verify the Electrum download anyway...

What a nightmare.

It's not "in" Mycelium but on a paper wallet, so no worries there.  It would only be on Mycelium when I scan the private key and execute the transaction to send to my Ledger address.

In a nutshell, you're saying that Mycelium is perfectly capable of handling this transaction and that it is a perfectly viable option.  Again, I don't care if it costs me $3K in transaction fees as long as it is a solid option.

Electrum is becoming a non-starter for me as from what others say in the Bitcoin board, I need to create 3 different wallets in Electrum to handle all the derication paths of the inputs in this single wallet and then do an offline transaction with a usb stick and...
It's just beyond my technical capability.

Edit:  Will Mycelium have any issue with 3 different formats/inputs contained in a single private key (like Electrum does apparently) or is it a sweep-and-go operation with Mycelium handling the technicalities?

Thanks so much!  Can't tell you how much I appreciate the help with this!

Thanks guys, I'm a n00b obviously and this is a bit beyond me. 

I can't get the wget command to work in Gnupg to even download and verfiy Electrum.

This is why I was asking if it's just "easier" to setup a full node and do this with Core?

Really appreciate it everyone, thanks very much!

But I only have one wallet and one private key that happens to contain a mixture of inputs?   How can I possibly seperate these inputs?

Thanks very, very much @BitMaxz and @seoincorporation!

Installing GnuGPG and the adventure continues...

Just to clarify, I'm "importing" the private key and not sweeping it in Electrum?

Are there any concerns or considerations I should be aware of when importing the key, entering it into Electrum and then executing the transaction?

Do I need to password the wallet and back anything up just in case?  Any settings i need to pay attention to?  Is it really as simple as importing the private key into electrum and then executing a transaction to move funds to my Ledger-generated wallet?

Cheers everyone.

Edit:  Installed Brew and Gnupg.  Now I'm stuck...

When entering:  gpg --recv-keys 2BD5824B7F9470E6

I get:

gpg: keyserver receive failed: General error

FIXED WITH:  gpg --keyserver keyserver.ubuntu.com --recv-key 2BD5824B7F9470E6

Now the wget command isn't being recognized...

FIXED WITH:  brew install wget

I'm dealing with one SegWit private key on a paper wallet (LM...), not a BIP39 seed.

Creating 3 different wallets in Electrum makes no sense to me, I think you're misunderstanding but thanks for the help.

Thank-you @jackg!

I don't understand what you mean that I can't use a QR code?  To scan the wallet with Mycelium or to scan the receiving address?

Or do you mean I need to use a raw private key if I use Electrum?  I'd rather not deal with Electrum in this context but glad you bring-up the fact I can't use QR scanning in Electrum?

When I try a dummy run and click on "Clipboard" Mycelium gives me a small error pop-up that it's an Unrecognized Format" so I assume you're referencing Electrum?

I'd rather move it all in one transaction not knowing what any of these given wallets will do with change under the circumstances.

Everything is in one private key and it's a whole lot more than 0.1 BTC...

Please clarify if you can?

Really curious if Mycelium would handle this without issue.

All the best

Hi everyone,

So, dumb question, of course I should if I can...

However, this is being considered because I need to make a large transaction as safely as possible.

I have a p2sh SegWit BTC paper wallet and need to move it all in one transaction to a Ledger hardware wallet.  I need to get it off paper and into a proper, secure BIP39 wallet.  This is over 30 inputs and a mix of all 3 formats (Legacy, SegWit and Native SegWit) with a total raw data size of well over 30,000 bytes.  This is also a life-changing amount of BTC.

Unfortunately I'm learning the not-so-positive details of all this later rather than sooner.

Is setting-up a node on a solid computer and importing the private key into a Core wallet be an ideal, dependable and safe way to eventually move these funds in one shot?  Would this be the best possible option for such a transaction?  I don't care about massive transaction fees.  Is this idea unsound for some reason given the details of the existing paper wallet?

People have suggested importing it into Electrum or just sweeping it with Mycelium but I need to get responsible and do the optimum thing for a change.  I can't get my copy of Electrum 4.1.2 to validate in GPG suite on my Macbook Pro running Mojave, when I try my Finder window just flashes once.  No doubt I'm doing something wrong but it immediately concerns me.

So, would setting-up a Core node be the best way to ensure the funds in this wallet get safely transferred to my Ledger?

Thanks to all for reading and any comments!

All the best

Hi everyone,

Can anyone please comment on any maximum transaction size that Mycelium would not be able to handle?

I have a p2sh SegWit paper wallet with well over 30 inputs (mixed with Legacy, SegWit and Native SegWith inputs) and raw data size of well over 30,000 bytes.  I need to move this to a Ledger-generated address on a new hardware wallet.  Also, this is a life-changing amount of BTC.

These days I suspect a significant transaction fee to move it in one output, which I need to do, in the hundreds or thousands of $ to have it confirmed quickly?  Cost of the transaction is of no concern, only that the wallet can handle it easily without issue.

I've always had very good luck using Mycelium which is the only reason I'm considering using it for this.

Would Mycelium have no problem sweeping this wallet and with this transaction in general or is it best to consider other options?

I'm an idiot learning the hard way in this regard and in a bit of a spot so thanks for any comments on this.

All the best