Blockchain Watch Only | Bitcointalksearch.org

hugeblack

legendary

Activity: 2702

Merit: 4002

Quote from: tianxie on April 08, 2020, 08:25:04 AM

i cannot find the 870 amount, there are over 100 posts, which one is it?

He has returned the money to the support team and that will return it to whoever deserves it "after verifying whether the claim is reasonable or not."
you can find it here ----> https://bitcointalksearch.org/topic/m.9791998

In conclusion, if he had not returned the amount, customers would have lost their money, so do not trust any web wallets, especially those with poor programming, not updated periodically, and the inactive support team.

bitmover

legendary

Activity: 2352

Merit: 6089

bitcoindata.science

Quote from: tianxie on April 08, 2020, 08:25:04 AM

i cannot find the 870 amount, there are over 100 posts, which one is it?

It was distributed among those addresses he mentioned in the first post.

870bitcoin wasn't all that money in that time, back in 2014. It was a pretty high amount of money, but not as near as it is today. Anyway, that was a very honest act from joehoe

tianxie

member

Activity: 95

Merit: 10

Quote from: o_e_l_e_o on April 08, 2020, 04:54:10 AM

Quote from: koch44 on April 08, 2020, 02:48:30 AM

What do you mean by joehoe return 870BTC to the owners?

There was a big security flaw with blockchain.info in which they reused R values, which essentially allows an attacker to calculate the private key from the public key. Several users had their coins stolen, and so the user johoe who first detected the flaw emptied the other wallets which were at risk, to the tune of 870 BTC, and returned the coins back to blockchain.info to be redistributed to the rightful owners.

You can read more in this thread: https://bitcointalksearch.org/topic/reused-r-values-again-581411

i cannot find the 870 amount, there are over 100 posts, which one is it?

o_e_l_e_o

legendary

Activity: 2268

Merit: 18748

Quote from: koch44 on April 08, 2020, 02:48:30 AM

What do you mean by joehoe return 870BTC to the owners?

There was a big security flaw with blockchain.info in which they reused R values, which essentially allows an attacker to calculate the private key from the public key. Several users had their coins stolen, and so the user johoe who first detected the flaw emptied the other wallets which were at risk, to the tune of 870 BTC, and returned the coins back to blockchain.info to be redistributed to the rightful owners.

You can read more in this thread: https://bitcointalksearch.org/topic/reused-r-values-again-581411

koch44

jr. member

Activity: 54

Merit: 11

Quote from: hugeblack on March 29, 2020, 10:40:09 AM

Quote from: koch44 on March 28, 2020, 02:40:57 AM

I wonder what they do with all lost 2FA accounts in their database

It is a buggy wallet, continuing to use it means losing those currencies as there are a lot of historical incidents^[1] that have proven that they are not interested in developing the code^[2] and thus they expose customer money to loss without compensation.
It is best to avoid them and use open source wallets, no one will force you to use them.
In addition, you cannot prove that they cannot access your money. You need to trust them.

[1] @johoe return 870 BTC to the owners (Blockchain.info)
[2] Blockchain,info. more than 12 months and still no segwit support

What do you mean by joehoe return 870BTC to the owners?

hugeblack

legendary

Activity: 2702

Merit: 4002

Quote from: koch44 on March 28, 2020, 02:40:57 AM

I wonder what they do with all lost 2FA accounts in their database

It is a buggy wallet, continuing to use it means losing those currencies as there are a lot of historical incidents^[1] that have proven that they are not interested in developing the code^[2] and thus they expose customer money to loss without compensation.
It is best to avoid them and use open source wallets, no one will force you to use them.
In addition, you cannot prove that they cannot access your money. You need to trust them.

[1] @johoe return 870 BTC to the owners (Blockchain.info)
[2] Blockchain,info. more than 12 months and still no segwit support

hosseinimr93

legendary

Activity: 2380

Merit: 5213

First of all I recommend you to use non-custodial wallets like Electrum instead of blockchain wallet . But if you are going to continue to use blockchain wallet for any reason, I recommend you to backup your seed phrase before anything bad happens (You lose your password, the website become unavailable, etc.)

Select "Security Center" at top of the page.
Scroll down and click on "backup" button. You will get 12 words which is called seed phrase.
Save them in a safe place. If you can't access your blockchain wallet for any reason in future, you can use these words to access your wallet through other tools.

As o_e_l_e_o said, we don't know if they have access to your seed phrase and private keys. But having the seed-phrase can decrease the risk at least.

o_e_l_e_o

legendary

Activity: 2268

Merit: 18748

Quote from: koch44 on March 28, 2020, 02:40:57 AM

I wonder what they do with all lost 2FA accounts in their database

2FA can be reset by inputting your Wallet ID and Email Address in to this form: https://login.blockchain.com/#/reset-2fa

If you forget your password, then they state that they have no way of accessing customers' wallets and no way of recovering lost coins. If this is to be believed, then the accounts will sit dormant forever with the coins essentially "lost" unless someone is able to hack in to them.

However, since they are a closed source third party, we have absolutely no way of knowing if this is true. They may very well be able to access all their customers' accounts if they like, or they may back up seed phrases independently, or they may store passwords in a decryptable format or even in plain text, or any number of other accidental or intentional security flaws. Such are the risks you take using a web wallet.

koch44

jr. member

Activity: 54

Merit: 11

Quote from: pooya87 on December 10, 2019, 10:49:46 PM

Quote from: koch44 on December 10, 2019, 02:00:48 PM

That I know, thanks. Why I wanted this is I have the wallet encrypted and dont want to bother trying to find the password if the wallet is empty. lazy I guess...

when you have a wallet with a third party (blockchain.com web wallet) then things such as a wallet-id are only defined internally in their service. so your only option is to go to the same centralized third party and use their services to get whatever you want (addresses, balances, private keys, create transactions,...).

I wonder what they do with all lost 2FA accounts in their database

pooya87

legendary

Activity: 3472

Merit: 10611

Quote from: koch44 on December 10, 2019, 02:00:48 PM

That I know, thanks. Why I wanted this is I have the wallet encrypted and dont want to bother trying to find the password if the wallet is empty. lazy I guess...

when you have a wallet with a third party (blockchain.com web wallet) then things such as a wallet-id are only defined internally in their service. so your only option is to go to the same centralized third party and use their services to get whatever you want (addresses, balances, private keys, create transactions,...).

koch44

jr. member

Activity: 54

Merit: 11

Quote from: TryNinja on December 10, 2019, 12:59:58 PM

Not with the blockchain wallet ID, since that's an internal number on Blockchain's database. But you can get the wallet's xPub and track it (all addresses + total balance).

Settings -> Wallets & Addresses -> More Options -> Show xPub. Then use it anywhere you want (Electrum's watch-only, blockonomics, Magnum Notifier telegram bot, etc...).

That I know, thanks. Why I wanted this is I have the wallet encrypted and dont want to bother trying to find the password if the wallet is empty. lazy I guess...

K44

TryNinja

legendary

Activity: 2758

Merit: 6830

Not with the blockchain wallet ID, since that's an internal number on Blockchain's database. But you can get the wallet's xPub and track it (all addresses + total balance).

Settings -> Wallets & Addresses -> More Options -> Show xPub. Then use it anywhere you want (Electrum's watch-only, blockonomics, Magnum Notifier telegram bot, etc...).

koch44

jr. member

Activity: 54

Merit: 11

Is there a tools or way to add a blockchain wallet-ID as watch only, not an actually BTC adress

thanks for any inpuch
K44

Topic: Blockchain Watch Only (Read 322 times)