WTF is that a screenshot of? Not Mycelium Android...

Ah, whoops, thought it was Mycelium being discussed. Only ever have seen the Electrum GUI for OSX & Android. But in any case, I had to do this for Electrum: https://github.com/TheButterZone/electrum/commit/fca33e290015b475463481fc9b6626489aad5495

Ah, Okay I never tried this option on electrum that there's an edit/manually customize a specific amount of the fee.

Thank you for clarifying this, pardon me earlier.

But I much prefer use mycelium for faster confirmations tho, and electrum for multiple sending.

Please read the later post why I said 'Faster confirmation' using mycelium wallet. We're talking about transaction fee amount here and all you said is right but I'm more convinced that having large fee has the large chance to confirmed first.

Since mycelium fee is much higher than electrum, having such 130 sat/byte as lowest fee IIRC (before the recent update) than electrum having 90sat/byte as the lowest fee or even lower base on number as mentioned of tryninja since I never used that number of fee with electrum...

At the end of the day you are the one choosing how much in fees you want to pay.

It doesn't matter which wallet you are using. Both will provide you with the same confirmation time since both wallets let you send a transaction with the same fee. You can't say that X wallet is "faster" because they charge higher fees. That's just dumb.

i had this too. the transactions are valid. what mycelium is displaying to you is wrong.

i sent out from the wallet while this was happening and it went through fine despite what the wallet was telling. maybe in retrospect i should've waited for it to sort itself out just in case which it did a couple of hours later.

Mycelium will either let you backup/export your master seed (ie. 12 word seed mnemonic) or a "Master Private Key"... aka "xprv".

I'm fairly certain it doesn't dump the individual keys for each address in your HD account... Does the key you see start with "xprv"? If so, it is a Master Private Key.

If there's another Bitcoin fork then you might need those individual keys, it depends on how the wallets choose to incorporate it.

In almost all cases all you'll need is the seed.

If you really need individual keys then this will extract them - https://github.com/iancoleman/bip39  but it doesn't discriminate between used keys and unused ones so you may be in for a lengthy search.

What's wrong with just using Mycelium's 12 word seed as a backup? That is what it is designed for... Why do you want to use the xprv as your backup?

The 12 word seed is much easier to write down and type back in should you ever need to restore your wallet... plus, it backs up ALL the different HD "accounts" within Mycelium (if you have created multiple accounts)... Simply click the "3 dot" menu and select backup.

Mycelium uses BIP39 and BIP44... it uses a Derivation Path of m/44'/0'/0'/0 for receive addresses and m/44'/0'/0'/1 for change addresses (for the default account in Mycelium)...

- Put 12 word seed into here: https://iancoleman.github.io/bip39/ (<insert standard warning about using offline copy here>)
- Click BIP44 tab
- See all your receive addresses AND private keys at the bottom at the bottom (generate as many as you need to find all your coins)
- Change "External/Internal" value from 0 to 1 for change addresses
- See all your change addresses AND private keys for those addresses at the bottom (generate as many as you need to find all your coins)

The xprv and xpub are all generated from the seed... the 12 words are a less error prone method for representing the seed...

For different "accounts" in Mycelium you can just increment the "account" part of the Derivation Path:
m/44'/0'/1'/0 and m/44'/0'/1'/1 - Receive/Change for Account1
m/44'/0'/2'/0 and m/44'/0'/2'/1 - Receive/Change for Account2
etc

You mean like how everyone could just restore their 12 word seed into Electron Cash to regenerate their Mycelium and/or Electrum wallets to access the BCC after the fork?


Personally, I'd rather write down (and double check) 12 words than attempt to make sure that I have transcribed something like: xprv9s21ZrQH143K2EQNBSLkWK1tSFmwprbUHff8sFGVmC4J4qMdJvNR2DVZyaaxA4kHS9hzx4fYtp2 HsXhqFW6UGuB15CotXZrF1uzikqX75nN correctly... but that is just me