Mycelium Bitcoin Wallet

[Richy_T]

Yeah, I didn't even know about it but Open Bazaar has just done a release on the testnet so I mined a few for myself. I still have a bunch on a regular bitcoin wallet but I like Mycelium better for regular use.

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[PilotofBTC]

What's the best channel to get support for Mycelium Android wallet?

I have an issue where one of my accounts isn't showing all the transactions. Is there a limit to how many show? I tried reload account to no avail.

Also, is there a way to get a list of all the public addresses in an Account so I can use a block explorer to compare the balances?

[Michail1]

Channel or forum?  I believe this is the best forum for support.   IRC channel #bitcoin or #bitcoin-otc would be a good live resource.

I have only ever needed to reload account to load up the transactions; however, you can also delete mycelium from the phone and then install / restore from your master seed.  This takes some time, but also rescans and shows transactions.

There is no way to output a list from mycelium.  You can export the public key and then use pycoin to generate the public keys for as many addresses as you want.
And, if you don't have to many transactions, you could select to Sign Message with an address which gives you a list as well of the used addresses in order to sign the message.

[PilotofBTC]

Ok thanks.

I did figure out what was going on after more investigation. It seems that the miner started sending coins to an older address in another wallet.

So all is well. It wasn't a wallet issue.

Thanks for the info about sigh message to list addresses. It would be nice though if there was a way to get/export a list of addresses so that they could be watched in another wallet.

[birr]

It would be nice though if there was a way to get/export a list of addresses so that they could be watched in another wallet.

People have put together tools for doing exactly that on websites, and on github, but I don't have the links handy.  Unfortunately, such tools aren't built into mycelium.  But mycelium uses standard HD, so you can derive the entire chain of addresses from your seed.

https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki
https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki

[CCIEMan]

How exactly does Mycelium backup work? You get 12 English words as backup key for your wallet. What is mechanism behind this? Where are private keys kept? How are they secured? How are they retrieved with 12 words?

[BitcoinNewsMagazine]

How exactly does Mycelium backup work? You get 12 English words as backup key for your wallet. What is mechanism behind this? Where are private keys kept? How are they secured? How are they retrieved with 12 words?

Try this link https://www.reddit.com/r/Bitcoin/comments/2ik8jq/mycelium_bitcoin_wallet_20_hd_is_out/

Remember your private keys are kept on your phone and could be compromised. For ultimate security use Mycelium with a Trezor, that way your private keys are in the Trezor immune to malware.

[arorts]

Mycelium seems to be poorly integrated with Trezor: I keep getting stuck at "scanning Accounts" for 5 minutes before it can find (when successful. It's a hit and miss) any btc account in the trezor device.
In addition, it doesn't seem to be correctly adding up the full balance shown as when I use Electrum instead with the same exact Trezor. 


Any pointers?

 

[BitcoinSupremo]

I had blockchain on my mobile before, I am very glad to have found this, its very useful for betting on the go and I only keep small amounts in it, so I am not bothering if someone stole or not my private key in this max amount I keep here is 0.05 BTC just for betting on the go. So far its a great app and of great usage on the go.

[dooglus]

How exactly does Mycelium backup work? You get 12 English words as backup key for your wallet. What is mechanism behind this?

BIP39 is what Mycelium uses to generate the 12 words. See https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki

Where are private keys kept? How are they secured? How are they retrieved with 12 words?

It uses BIP44 to generate the private keys from the 12 words. See https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki

You can play about here with BIP39 and BIP44 to see how the words correspond to public and private keys:

    https://dcpos.github.io/bip39/

If you put your Mycelium backup words into the first field, you'll see all your Mycelium addresses and private keys in the BIP44 tab when you scroll down. There are risks involved with entering your backup on an online machine, of course. Depending on how safe you want to be you might prefer to make a copy of that web page on a memory stick and play about with it on an offline machine. Or use a different set of words completely.

I put in these 12 words: "ketchup meat mesh gift youth dentist early chef luggage delay old enhance". That is all the information you need to generate addresses:

    1LnBZHUP3qBoBCsUBnAxPpHMunqWtA18kD, 1KoDCzwjk6YrosZefW9rh75iGZYLgYmyPT, 1FrJWybjo8epKhvCFbXhAkmUx4WsUNqm4Q, ...

and the corresponding private keys. The sequence of addresses goes on forever and all you need to store are the 12 seed words.

[MrWhiteBites]

i have just downloaded Mycelium as i see it as a good option for paying for items on Open Bazaar.

BUT as the RECEIVE address changes with one use, can i use this wallet to accept payments? Or will i have to change the address after it is used once?

Or will i be able to accept many payment using the one address.

Also in my address book, it shows nothing.

[birr]

i have just downloaded Mycelium as i see it as a good option for paying for items on Open Bazaar.

BUT as the RECEIVE address changes with one use, can i use this wallet to accept payments? Or will i have to change the address after it is used once?

Or will i be able to accept many payment using the one address.

Also in my address book, it shows nothing.

Mycelium uses each address once, by default, but it remembers every address it generates.  If someone sends funds to one of the used addresses, Mycelium will find them; nothing gets lost.
Occasionally you might have to refresh the wallet.  That happens sometimes even if you are not receiving at old addresses.

[MrMagpie]

Hi, been using this wallet fine for ages however sent a transaction 30 mins ago & its stuck on 0 confirmations, nothing in the blockchain & still says sending x.xxxx on the my balance page...any ideas?  Is there an official support for mycellium?

[Newar]

Hi, been using this wallet fine for ages however sent a transaction 30 mins ago & its stuck on 0 confirmations, nothing in the blockchain & still says sending x.xxxx on the my balance page...any ideas?  Is there an official support for mycellium?

If it's still stuck, go to the Transaction tab, tap on the tx and it will give you the option to rebroadcast.

[gentlemand]

What do we make of this then? - https://www.reddit.com/r/Bitcoin/comments/4gkxox/mycelium_new_wallet_announcement/

Plus crowd sale too.

[bitkilo]

What do we make of this then? - https://www.reddit.com/r/Bitcoin/comments/4gkxox/mycelium_new_wallet_announcement/

Plus crowd sale too.

Looks good to me, the crowdsale is an interesting offer.
And they are adding some alt coins to the wallet, already a great wallet and now only getting better.

Good work guys!

[gentlemand]

I think it might be the first crowd sale that's actually tempted me. I'm a long time user and their plans are compelling.

[birr]

If they can integrate Monero it will be heaven.

[TookDk]

I think it might be the first crowd sale that's actually tempted me. I'm a long time user and their plans are compelling.

I feel the same way, thinking about how useful Mycelium has been to me the last couple of years, then would I not mind supporting/investing in the company.

However, I find it a problem that you do not know exactly how much your invest correspond to in shares.
The more others invest in the initial crowd sale, the less your share is worth.

Wouldn't it be more fair that you issue a fixed number of shares (or tokens) at an initial price per share and let the market decide the value of the shares?
 

[birr]

You shouldn't use the word "shares."  This is not an offering or issuance.  And it isn't a security.
What is it?  What are they selling?

Full disclosure:  I'm a longtime Mycelium fan.  I signed up for the pre-sale.  But only if I get some answers, will I send them my money.