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Author Topic: Blockchain.info - Bitcoin Block explorer & Currency Statistics  (Read 414017 times)
chainedcracker
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March 08, 2014, 10:00:19 AM
 #3061

It is my assumtion this is my best wallet that i currently have so i wont change for anyothers
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March 09, 2014, 03:50:55 PM
 #3062

I have a question about blockchain.info implementation

https://bitcoin.stackexchange.com/questions/23052/does-blockchain-info-retain-the-wallet-password-in-client-side-memory

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When you log into blockchain.info - you enter the password on the client side.

Does the password remain stored in a local javascript variable on the client side after the login process is over?

While I haven't yet read through the blockchain.info source code (it is open source, so you are welcome to do so if you like), the fact that I can create a new address without having to re-enter the password would seem to be an indication that the password must be stored client side.

Note, that the password is never sent server side.  When you "log in", the javascript requests encrypted private keys from the server using the "Identifier", and not sending a password at all (If you have 2FA turned on, then the server send a request for the 2nd factor authorization before sending the encrypted private keys).  Then the local javascript uses the password entered to decrypt those private keys and provide functionality to the wallet.

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If yes, does that count as real a security risk? What kind of attack vectors does that open you to?

I'm not sure what you mean by "as real a security risk", but any malware running on the computer where you are accessing the blockchain.info wallet theoretically has the ability to capture the password (or private keys) and therefore steal any bitcoins associated with the wallet.  This would be true of any desktop wallet.

Note that blockchain.info is essentially just a desktop wallet that runs in a browser and uses cloud based storage of encrypted private keys.  It's a bit like storing an encrypted MultiBit wallet in dropbox.  Then you could download MultiBit to any computer you wanted to use it on, temporarily grab your wallet from dropbox, and decrypt it.  When you're done using it you'd just re-encrypt and send the updated wallet back to dropbox.  blockchain.info just automates all of this for you.

Thanks, this confirms what I know.
I was just wondering whether storing the password client-side in browser memory was really any worse to just using the password one type to decrypt the wallet, and then forgetting it - I guess the answer is "yes, but it's difficult to quantify by how much, and any malware has access to it anyway, so it doesn't matter ... and besides you need the password to be saved in order to save your updates".

Please do not pm me, use ron@bitcoin.org.il instead
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solex
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March 12, 2014, 09:27:05 PM
 #3063

blockchain.info team, can you look at this chart and correct the y-values which have been showing as zero for some time?

https://blockchain.info/charts/avg-block-size?showDataPoints=false&timespan=&show_header=true&daysAverageString=1&scale=0&address=



vkrisz81
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March 13, 2014, 10:20:53 AM
 #3064

hi! i would like to get a help . if i detected a cheaters adress, is there any way to block that address? to block miners to include to cblockchain his address activities? this is the only way to break our money stealing!


is there any way to block it?? or bitcoin is only for cheaters by being unstoppable?Huh?
as i can see bitcoin system made for to be able to cheat!
Hawkix
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March 13, 2014, 06:20:13 PM
 #3065

So you think it would be wise to be able to block other Bitcoins just because you may think they are stolen? Think more.

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organofcorti
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Poor impulse control.


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March 13, 2014, 09:16:48 PM
 #3066

hi! i would like to get a help . if i detected a cheaters adress, is there any way to block that address? to block miners to include to cblockchain his address activities? this is the only way to break our money stealing!


is there any way to block it?? or bitcoin is only for cheaters by being unstoppable?Huh?
as i can see bitcoin system made for to be able to cheat!

You are unlikely to find anyone to agree with you. However, if you do wish to contact miners, you should post a new thread to the Mining board: https://bitcointalk.org/index.php?board=14.0

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Bitgoblin


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March 15, 2014, 11:04:22 AM
 #3067

hi! i would like to get a help . if i detected a cheaters adress, is there any way to block that address? to block miners to include to cblockchain his address activities? this is the only way to break our money stealing!


is there any way to block it?? or bitcoin is only for cheaters by being unstoppable?Huh?
as i can see bitcoin system made for to be able to cheat!
cash is cash is cash.

Apparently you fail to understand what cash is, and what fungibility is.

1LohorisJie8bGGG7X4dCS9MAVsTEbzrhu
DefaultTrust is very BAD.
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March 18, 2014, 01:00:33 PM
 #3068

does anyone know what will happen while sending btc to blockchain.info wallet during maintenance time? will i receive my bitcoin in wallet?
the site's still in the maintenance  Huh

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Hawkix
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March 18, 2014, 01:04:51 PM
 #3069

You are sending to BTC address, not to blockchain.info wallet.

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hungpham
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March 18, 2014, 01:48:57 PM
 #3070

You are sending to BTC address, not to blockchain.info wallet.
it means that i'll receive btc in blockchain.info account when it comes back? (sorry, i'm new in btc)

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March 18, 2014, 01:57:05 PM
 #3071

You are sending to BTC address, not to blockchain.info wallet.
it means that i'll receive btc in blockchain.info account when it comes back? (sorry, i'm new in btc)
Yes. Assuming you own that address. If you created that address in your Blockchain.info account, you should own it (also, you have saved it in your backup, if you got it).

Meanwhile, you can check amount on the address on blockexplorer.com.

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¡ɥɔʇɐʍ ʇsnɾ &#7


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March 18, 2014, 05:34:30 PM
 #3072

Hi Piuk! I have a feature request. Could you please make these symbols in the second row green? Grin

Edit: blockchain.info still is lightyears ahead of greenaddress.it but with nlock time and multisig they proof they go for a certain direction that could obsolete any existing wallet in the blink of an eye. These are the ingredients of micro transaction channels and I would bet they are sooooo close to publishing a working wallet for that and then it's network effect that will get everybody on board.

tryexcept
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March 19, 2014, 01:01:08 AM
 #3073

we just added some sweep key feature in receive money for both compressed and uncompressed WIF  Roll Eyes

GreenAddress - The safer wallet that puts you in control  (open source / instant confirmation / multisig / deterministic / multiplatform)
Mitchell
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Verified awesomeness ✔


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March 19, 2014, 07:33:06 AM
 #3074

Hi Piuk! I have a feature request. Could you please make these symbols in the second row green? Grin

Edit: blockchain.info still is lightyears ahead of greenaddress.it but with nlock time and multisig they proof they go for a certain direction that could obsolete any existing wallet in the blink of an eye. These are the ingredients of micro transaction channels and I would bet they are sooooo close to publishing a working wallet for that and then it's network effect that will get everybody on board.
They have instant confirmation, so I am guessing it's something like Inputs.io, which is an instant no-go.

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March 19, 2014, 10:14:10 AM
 #3075

We will have instant confirmation out of band via the payment protocol (memo field)

No, not like inputs.io, quite a bit different from the original greenaddress concept coined by Jan Vornberger https://en.bitcoin.it/wiki/Green_address .
Our design is some same idea that Gavin also had in 2013 https://gist.github.com/gavinandresen/5616606

Will update the site to better reflect this so there's less confusion and you don't have to guess.

GreenAddress - The safer wallet that puts you in control  (open source / instant confirmation / multisig / deterministic / multiplatform)
leepsteer00
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March 20, 2014, 09:20:33 AM
 #3076

Anyone having this bug in their acc?

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March 20, 2014, 12:18:21 PM
 #3077

By the way, I'm couldn't receiving any email notification. Anyone else having the same issue?
bills4
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March 20, 2014, 02:46:51 PM
 #3078

i am using your API to receive bitcoin
but from 03/18/2014 to now it get error
when my customer send bitcoin to new address bitcoin created by API , they don't send bitcoin to my account and it can't run file callback .

check it , only have 1 Transactions , it need to make 2 Transactions , one receive bitcoin from my customer and one send bitcoin to my address bitcoin and call file callback .

https://blockchain.info/address/1DufSyUhYfaAw1iG51RGmTgSizkDukguWq
https://blockchain.info/address/1Gg31ETUSnEkddUx6JUHkQNpQEewEw2sv2
https://blockchain.info/address/17kvK4QUJCctocbBLnGip8yHbQTEP3biGb
and so much ,
my customer angry with me , but you don't send bitcoin to my address , and it don't call file callback , fix it please
leepsteer00
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March 20, 2014, 04:55:27 PM
 #3079

Anyone having this bug in their acc?



Update: It's working now.
MoneyGod
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March 20, 2014, 05:29:39 PM
 #3080

By the way, I'm couldn't receiving any email notification. Anyone else having the same issue?
today I have very bad day some one have my all coins and I have no notification from blockchain about this

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