Topic: Mycelium Bitcoin Wallet - page 52. (Read 586368 times)

No, the back end software is not openly available.
However, adding support for (self run) insight servers (and later maybe toshi and libbitcoin as well) is in the works.

Is it possible for me to run my own Mycellium backend server? It seems the default ones are overloaded, making the wallet unusable at times. If I could use my own private server the wallet would be useful again.

Thanks, this is a known problem and work is underway to rectify it.  (I'm a Mycelium dev, but am not involved with the wallet myself.)

The best Bitcoin Wallet

Nope

I am talking about local trader. I was sat with a customrr who wanted 4btc.
To do this he had to get out his calculator and multiply my sell rate by 4. When he entered this ammount market price changed and he was only getting 3.98btc. The only option for the buyer using the local trader is the ammount in fiat he wishes to purchase, you cannot change to btc like you can with the normal wallet functions.

We ended up just doing a direct trade without uaing local trader as then the reciever could ent

The option is already there. After pressing Send and Enter Amount it is in the upper right corner.

Can the developers include an option to select btc or local currency when entering ammount to purchase.  I have customers who just want to be able to push 4btc and not just 1000€

https://dooglus.github.io/bip39/ will let you access it. It takes your 12 word backup and gives you your private keys for importing into a decentralised wallet.

The Mycelium Bitcoin Wallet says "Error, Can't synchronize the account. try again later" on my iPhone. It's been over 10 hours like this. WHAT'S GOING ON?

I want my money, but can't access it.

New change goes to new change addresses.


When you make multiple HD wallets in Mycellium, they all have the same mnemonic.

If you go to the 'Mycellium Wallet' tab at https://dcpos.github.io/bip39/, it will only list the addresses of the first HD wallet you created. And only the receiving addresses (not the change addresses). However, if you go to the BIP44 tab at the same page, you can set the "Account" (0 for the first wallet you created, 1 for the 2nd, etc.) and the "Internal / External" (0 for receiving addresses, 1 for change addresses).

I made https://dooglus.github.io/bip39/ which lets you edit the derivation path in the Mycellium Wallet tab. I didn't know about the BIP44 tab when I made that fork, or I wouldn't have bothered.

Very true, no one's likely to do that.
How about if somebody sends btc to an old receiving address, and some, but not all, of that coin gets sent out in the subsequent transaction.  Where does the change go?


You're supposed to type in the mnemonic for the wallet you want to generate.  Isn't that what you're doing?

I tried that, but it seems to only want to generate the addresses of the first HD wallet I ever created. I've since deleted that one.

On the Mycelium tab, 'BIP32 Derivation Path' seems hardcoded to m/44'/0'/0'/0

I figure I need to change one of those 0's to a bigger number to get the addresses for the wallet I'm currently using. I didn't realise I could use the BIP44 tab to edit those numbers individually, so got lost making a fork of the page where you can edit the derivation path on the mycelium tab. But all I needed to go was use the BIP44 tab and change the 'account' from 0 to 1 to see my receiving addresses.

I found that if I used m/44'/0'/1' as the derivation path then the displayed "BIP32 Extended Key" and "BIP32 Extended Key (addresses only)" in the mycelium tab of the bip39 web page match the keys I see in mycelium when I export my wallet. But the addresses it generates with that derivation path aren't right. In order to get the correct address list I have to use m/44'/0'/1'/0 as the derivation path (ie. with the /0 on the end).

My wallet contains 49 private keys according to the accounts tab of mycelium, but only addresses 0 through 17 have been used. I guess the other 31 must be change addresses.

I tried m/44'/0'/1'/1 as a derivation path and saw a list of my change addresses. 0 through 29 have been used. So that's 30 change addresses and 18 receiving addresses that have been used, and I guess one extra receiving address has been displayed but not used, making the displayed total of 49.

I sent some coins to the first receiving address in the list, hit the 2-arrows-in-a-circle icon, and the deposit showed up. So it does look back through at least 17 old receiving addresses.

Not with every synchronization - but they for sure get checked when reloading the account.
But why on earth should anybody send money there?

And the old change addresses, does Mycelium monitor them?

Ahhh that is good to know; I can use it for a weekly transaction then.

Mycelium server source code is not free software (as in freedom) and is not available. Also, Mycelium phone's source code is not free software too as per their license prohibits distribution of modified codes.

I haven't checked (and don't have time for it right now) but is the backend code somehow open source?
Would it be possible for someone who has a full node to run a mycelium backend for himself (and maybe some friends?)
I suppose there are trust issues, so connecting Mycelium to any random backend server might be not advisable, but for personal use it should be ok, and maybe some other trusted organizations would be willing to run Mycelium backends as well.

Onkel Paul

Concerning old receiving addresses: Yes, they are still monitored for incoming transactions.

Concerning server problems:
Better version of the backend is in the works, till it is ready we try to keep the servers up as good as possible while the spam transactions cause severe load.
Sorry for the inconvenience, a more robust and efficient backend is being coded.

Was kind of wondering why my wallet hand't received anything yet today.  Or at least, so it seems.

Relevant /r/bitcoin thread:
https://www.reddit.com/r/Bitcoin/comments/3db7qr/mycelium_servers_down/