Topic: Blockchain.info - Bitcoin Block explorer & Currency Statistics - page 102. (Read 482699 times)

OK cheers, I'll have a search and read about it

^^^ That's this "multi-signature transactions" thing that the developers have been working on and talking about for I think almost a year now. It's already implemented in the protocol, and should be a usable feature probably before the end of this year.

I've got an idea that I think would be a great feature for you to implement at some point which is to have co-password accounts for authorizing any spend from a wallet.

Basically the same feature you get with a lot business/shared bank accounts, two or more people would have to confirm the same send two address, amount and their individual passwords to authorize a transaction.

I think this feature would give a lot of people who collaborate together peace of mind, promote collaborative projects using bitcoin and also be used for escro.

hi piuk,

but as a user of your wallet this solution does not help me if i want to get a stucked transaction through. and you (kind of) already do this: after 24h you delete the transaction and i can send a new one - this is also (likely) a double-spend.

btw. most pools dont do your described fee calculation yet. which means if there is a high fee transaction which needs a low-fee input most pools would still ignore the low fee one (because fees dont really matter now; except for spamming protection)

(This is a repost of a post I had deleted. My attempt at using Google Docs to host an image didn't work.  Dropbox should work.)


Just knocked together some PHP a few days ago to turn HTTP POST notifications into Prowl notifications that show up on my phone, but when I went to change settings to use it, this is what I found:



HTTP POST isn't among the options listed here.

*On my computer, I am using ubuntu with Chrome browser (everything seems to be fine on computer)
on my smartphone device, I am using an iPhone 4S, on fw 5.1.1
*I'm not using any password manager
*I did create the wallet from the iPhone app
*I recently imported my old wallet,the one with the shared keys that wouldn't allow me to pair-device again, to my new wallet.

I think this issue should be fixed now. It was a problem with case sensitivity between the shared key.


I don't think re-constructing the transaction and double spending is the best way to handle this.

Either mining pools should offer a service where you can pay a small amount to have a transaction marked as high priority.

Or by an output from the transaction with low fees with a transaction that has a high fee attached the bitcoind transaction priority algorithm should take into account the extra fees which can be gained by mining both transactions, and hence marking the low fee transaction as high priority as well. This way if a merchant wants to increase the confirmation speed of a transaction all they have to do is spend it with a high fee.

as i want him to code it in a way which keeps the transaction intact: no
but you can use the rawtransaction api from bitcoin.7 to do that what you described

0 confirmations are always a risk...

this feature is only intented to push a transaction harder which does not want to go into a block (which is important because blockchain.info has a feature to not pay any transaction fee if the user wants it that way).

edit: more clarification

Can I use this method to pay a merchant with a lower fee, and then 5 minutes later pay that same amount to myself with a higher fee?

Feature request:
Allow to resend a transaction with a higher fee.
if it uses the exact same prevouts their shouldn't be a problem: just resend it and (maybe) use an additional prevout to cover the higher fee.

if the old transaction confirms the new one cannot and the other way around: so it should be safe.

A bug with this has been fixed. Also taint analysis depth has been increased to 100k outputs (up from 50k).


Yes I promise an update for the android app and multisig will be coming soon (Maybe not until I get back from holiday though).


picobit is correct, something is a bit bugged with live update on the homepage. Refreshing the page will fix it.


Could you try and help me pinpoint the problem a bit:

* what browser and Operating system are you using?
* Are you using any password manager (like lastpass)?
* Did you create the wallet on the iPhone app?
* Have you recently imported a wallet backup?

If you login and go to the account settings page again I have added some server side debugging code to help me find the issue.

I often see something like that.  The live update gets messed up, in particular if you suspend the laptop, but sometimes even without doing that.  Refreshing the page often help.

What's going on here?

The newest block is shown as being over an hour ago (there wasn't such a gap between these blocks) and has a size of 0.

I probably suspended my laptop between visiting this page and taking the screenshot, but why would that cause the data to be incorrect?

My share key is present but i still get the error when i tried to pair my iphone.

my new account with the imported address does not seem to load on my iphone either. what would be the best option to get my wallet working again on my phone? :/

Any news on the newest android update and hopefully a nexus 7 fix?

Keep up the good work

Maybe we can get some more widgets too

Thank you piuk!  I am excited for BTCPak to be integrated with my favorite bitcoin website.  He really did a smooth job of integrating our branding with his. 

I cannot say enough good things about blockchain.info

What a beast! 

Withdraw to MoneyPak directly from My Wallet

BTCPak.com is now integrated with My Wallet allowing for quick and easy withdrawls to MoneyPak. MoneyPak can be used to fund any US PayPal Account and a variety of pre-paid debit cards.

If you select the anonymous option blockchain.info will take on the double spend risk making the MoneyPak available within a few minutes. Otherwise transactions must wait 6 confirmations (approx. 1 hour).



I would like blockchain to offer a consistent UI for many bitcoin services, so If you would like your service added please contact me.

Amount you get for tweeting increased


All I can suggest is to remove the app and re-install it. I need to look into this further.

I did just that, export then imported to a new wallet. Seems to be fine on computers but on iOS my transaction history does not show up and on 'My Addresses' tab, i see "Receiving bitcoin addresses"; however, no address are loading  

i am using an iPhone 4s for my wallet and was initially trying to pair an additional device (iPad) with my original wallet. now i'm just trying to have a working wallet again on my iPhone 

Thank You for the bug report. You were being asked for a watch only address because the interface didn't think you had enough available funds in addresses with a private key. I'm not sure exactly why this was the case if the interface was showing sufficient balance. Do you watch only addresses have many hundreds of transactions? The javascript requests from the server the top n outputs, at that point not distinguishing between watch only and having a private key.



This is actually quite a serious error. The Shared Key is used instead of the users password for server side authentication. If the Shared Key does not match you will not be able to update your wallet or change any settings. A quick fix would be to export the wallet and import it into a new wallet.

On [Import / Export] tab click Export Unencrypted, you should see some JSON - is the sharedKey entry present? Are you using just the iphone app or the android app as well?

Changes To Mixer

* Blockchain.info will now pay the miners fees.

* Fixed slight error in fee calculation. If you have recently made a transaction through the mixer you may receive a small refund - but the amounts are very small (~ 0.001 BTC for a 10BTC transaction).

* The taint of the final output address will now be considered. If using a payout address which has received payments previously the mixer will ensure that no funds are sent to it that are already tainted by the existing transactions.

---------

Running a bit of a Twitter promotion. You can get a small amount of btc by tweeting a link to blockchain.info from the My Wallet intro page.