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Author Topic: Blockchain.info - Bitcoin Block explorer & Currency Statistics  (Read 414702 times)
Carlos L.
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February 10, 2014, 05:56:47 PM
 #2981

Just noticed you're sending http notifications when a change is "received".
That doesn't make any sense to me, why on earth I would want to receive a notification for a change?

For example, this is a deposit address for a user.
Someone makes a withdrawl, Bitcoins come from another address inside my wallet, and sends change to that user deposit address.
Blockchain sends me a notification that address has received funds, but in fact just received a change from my wallet.

And now my system is a mess.
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leckey
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February 10, 2014, 06:17:19 PM
 #2982

Or restrict login to only IPs from a certain country.

I definitely second this.

Carlos L.
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February 10, 2014, 06:21:50 PM
 #2983

Just noticed you're sending http notifications when a change is "received".
That doesn't make any sense to me, why on earth I would want to receive a notification for a change?

For example, this is a deposit address for a user.
Someone makes a withdrawl, Bitcoins come from another address inside my wallet, and sends change to that user deposit address.
Blockchain sends me a notification that address has received funds, but in fact just received a change from my wallet.

And now my system is a mess.
And because of this I'm 0.14 short... Haven't I noticed this (by accident) and the loss would be huge.

I can't find anything anywhere about "change" notifications.
Adlai
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February 11, 2014, 11:53:30 PM
 #2984

I get the following error four times in the console when opening the Shared Coin page in the wallet:

Code:
XMLHttpRequest cannot load https://api.sharedcoin.com/?version=3. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://blockchain.info' is therefore not allowed access.

Fetching the page manually returns a 502 error.

Is the server down? Can Shared Coin continue to function by having clients mix with each other, without the server?

Fuel up your volatility harvester! (see profile link)
TJ_Belgrano
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February 12, 2014, 10:27:46 AM
 #2985

Hello!

I have a normal wallet in blockchain.info, and I made a couple paper wallets to store the BTC im not planning on using immediatly.

I used the android app to send the funds to the paper wallets, and also scanned the public keys so I could check the balances, etc.

Both the site and the app consider my watch-only addresses as part of my "total" balance, and assumes the other wallets are (and stay being) mine.

This is annoying because both the app and the site show my total balance, not the balance currently in my ready-to-spend wallet. Its hard to figure out my actual spendable balance, and the total balance is displayed in the app wallet, which I may want to keep private (its not a concern ATM, I have far less than 1 btc, but it would be a concern if I had a lot more and didn't want it to be visible)

I noticed that if I "archive" the paper wallets the balance will not take them into consideration (which is what i want), is that the correct way to deal with this? Any other way to mark a wallet as cold-storage?
Do archived wallet addresses ever "go away" on their own? (like emails in a spam folder, that are automatically deleted after a few days)

Thank you!


Amitabh S
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February 12, 2014, 11:47:41 AM
 #2986

Hi, the API is not working because of cloudshare.. please fix as its causing problems for a lot of services using the API.

dashingriddler
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February 12, 2014, 01:11:59 PM
 #2987

APIs are facing issues due to cloudflare

https://www.unocoin.com - India's most popular bitcoin wallet. We make it super easy to securely buy, sell, store, use and accept bitcoin.

http://www.twitter.com/unocoin | http://www.facebook.com/unocoin | http://www.indiabitcoin.com | http://www.meetup.com/IndiaBitcoin | http://www.bitcoinalliance.in
leckey
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February 12, 2014, 01:29:21 PM
 #2988

Also having API problems. Pausing cloudflare now.

dashingriddler
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February 12, 2014, 01:43:29 PM
 #2989

Also having API problems. Pausing cloudflare now.
I dont think it would matter if you pause it on your server. Blockchain.info need to pause so that our apis will start working.

https://www.unocoin.com - India's most popular bitcoin wallet. We make it super easy to securely buy, sell, store, use and accept bitcoin.

http://www.twitter.com/unocoin | http://www.facebook.com/unocoin | http://www.indiabitcoin.com | http://www.meetup.com/IndiaBitcoin | http://www.bitcoinalliance.in
piuk
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February 12, 2014, 02:40:52 PM
 #2990

Apologies for the issues with the API. I'm expecting a resolution within the next 2 hours.

Cloudflare has been enabled as a temporary measure to reduce load on the database while a crash on one of our database nodes is investigated.

Typically this indicates that a startup just hired a new marketing person.  Typically the first thing they do is to irritate everyone at the shop by coming up with a new logo as a means of demonstrating that they do things.

 Grin

jayc89
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February 12, 2014, 11:08:33 PM
 #2991

Hello, can you tell me if it is possible to identify the source address when receiving payments using the "Receive Payment API"?

When the callback page is called I can see the destination address and the newly created payment deposit address, but no source address from where the payment originated.

Thanks!
btcash
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February 13, 2014, 03:29:32 PM
 #2992

Does Blockchain.info relay non-standard TXs? Just wondering how that 1 satoshi spam got relayed.

The Americans take our data privacy concerns seriously. - Hans-Peter Friedrich (German Federal Minister of the Interior)
jratcliff63367
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February 14, 2014, 04:05:11 PM
 #2993

Sorry, I haven't read through the 151 pages of this thread to see if these suggestions have already been made, but I'll add it here.

Two features that would be nice to add to the wallet:

(1) Have a way to filter out dust/spam transactions when viewing your transaction history.
(2) Have a way to view your 'spendable' balance.  I have many watch only addresses in my wallet, but just a couple that the blockchain wallet has the private key for. 

Thanks,

John
mwww
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February 14, 2014, 05:09:15 PM
 #2994

Today I held a presentation about Rublon (automatic two-factor authentication for web apps) at KBBS 2014 (http://kbbs.uz.zgora.pl). One of your users asked us to get in touch with you because he would like to be able to protect his Blockchain.info account with Rublon.

This is how it works:
http://www.youtube.com/watch?v=JNorW7vvMR0

In comparison to traditional two-factor solutions, Rublon does not require you to use your mobile phone. It's based on trusted devices. Once you add your laptop to your trusted devices, all you will have to do is just enter your password in order to log in.
cenicsoft
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February 14, 2014, 05:50:45 PM
 #2995

Where does blockchain report the pool that solved the block?  Are you talking about this:



Note that it does not say "Solved by", it says "Relayed by".  Blockchain.info is accurately reporting where they first heard about the block (which peer was first to relay the block to them).

No, I'm not talking about the relayed by information, but the Coinbase signature.  For example, look at https://blockchain.info/tx/336820af0a7b342883e7a60d96db82d5e1e329d5702c6316b0afad756347fb12 which you'll see this for the Coinbase:

03885c04094269744d696e746572062f503253482f2cfabe6d6dda14175dc3ce8af0faaa59c23d3 dc93a91ac6f1f32079db879f8c2560e4d6ea0010000000000000009757331602a00000010003a22 d2990200000000
(decoded) �\   BitMinter/P2SH/,�mm�]�Ί��Y�==�:��o2��y��VMn�   us1`*:"ҙ

Inside that, you have BitMinter.  Most pools have an unique Coinbase signature, but blockchain.info doesn't seem to be parsing it correctly. 

Here's the Coinbase of another block that was attributed to BitMinter, but wasn't actually a BitMinter solved block - https://blockchain.info/tx/74f96248d0986d9ca4db75bec14e6bc44d3a9ed487063abf010048329099c64f which has a Coinbase of 03235c0403e23d02062f503253482f
(decoded) #\�=/P2SH/


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cenicsoft
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February 14, 2014, 05:54:16 PM
 #2996

Are there any plans to improve the reporting on blocks solved by pools?  It seems that there are a lot of blocks misallocated to the wrong pools.

For example, look at Block 284562 which is correctly reported as solved by BitMinter.  The CoinBase has BitMinter in it.

Now, take a look at Blocks 284615 and 284640.  Both of them have "P2SH" in the CoinBase, not BitMinter.  It's reporting the wrong pool as being the pool that solved those blocks.

You're using the wrong tool for the job. If you want to get real time attribution (rather than the relayer), try http://blockorigin.pfoe.be/blocklist.php



I'm saying that "Relayed By" shouldn't be used.  The CoinBase signature should be used instead.  The only issue with http://blockorigin.pfoe.be/blocklist.php is that it uses each pool's own website which isn't a great external validation.  Having a third party validate the information would be nice.  Of course, unscrupulous pools could probably change their CoinBase randomly from time to time in order to hide the fact that they solved a block. 

Anyway, Blockchain's use of Relayer causes people to get upset when they report a block is solved by a pool when it isn't.  If they used the CoinBase signature, then it wouldn't be as big of an issue.

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DannyHamilton
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February 14, 2014, 05:56:03 PM
 #2997

Here's the Coinbase of another block that was attributed to BitMinter, but wasn't actually a BitMinter solved block - https://blockchain.info/tx/74f96248d0986d9ca4db75bec14e6bc44d3a9ed487063abf010048329099c64f which has a Coinbase of 03235c0403e23d02062f503253482f
(decoded) #\�=/P2SH/

Huh

Where does blockchain.info "attribute" that block to BitMinter?

The quality of posts has dropped to such a low level that all users who are participating in a paid signature campaign are added to my ignore list. If you'd like a copy of the list to improve your browsing experience, you can find it here: https://bitcointalk.org/index.php?topic=973843.0 (Updated 2016-1-4)
DannyHamilton
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February 14, 2014, 05:58:57 PM
 #2998

I'm saying that "Relayed By" shouldn't be used.  The CoinBase signature should be used instead.

But how is that going to tell me who relayed the block to blockchain.info? 

Anyway, Blockchain's use of Relayer causes people to get upset when they report a block is solved by a pool when it isn't.

Only people who don't bother learning what the word "relayed" means.

If they used the CoinBase signature, then it wouldn't be as big of an issue.

But that wouldn't tell us who "relayed" the block?

Also, is the information in the coinbase a cryptographicly secure signature?  Or is it just a tag placed there by the mining pool?  If it's just a tag, then what keeps others from copying the tag to create a false attribution to the wrong pool?

The quality of posts has dropped to such a low level that all users who are participating in a paid signature campaign are added to my ignore list. If you'd like a copy of the list to improve your browsing experience, you can find it here: https://bitcointalk.org/index.php?topic=973843.0 (Updated 2016-1-4)
cenicsoft
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February 14, 2014, 08:38:51 PM
 #2999

Here's the Coinbase of another block that was attributed to BitMinter, but wasn't actually a BitMinter solved block - https://blockchain.info/tx/74f96248d0986d9ca4db75bec14e6bc44d3a9ed487063abf010048329099c64f which has a Coinbase of 03235c0403e23d02062f503253482f
(decoded) #\�=/P2SH/

Huh

Where does blockchain.info "attribute" that block to BitMinter?

Here - https://blockchain.info/blocks/BitMinter

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cenicsoft
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February 14, 2014, 08:42:49 PM
 #3000

I'm saying that "Relayed By" shouldn't be used.  The CoinBase signature should be used instead.

But how is that going to tell me who relayed the block to blockchain.info? 

Anyway, Blockchain's use of Relayer causes people to get upset when they report a block is solved by a pool when it isn't.

Only people who don't bother learning what the word "relayed" means.

If they used the CoinBase signature, then it wouldn't be as big of an issue.

But that wouldn't tell us who "relayed" the block?

Also, is the information in the coinbase a cryptographicly secure signature?  Or is it just a tag placed there by the mining pool?  If it's just a tag, then what keeps others from copying the tag to create a false attribution to the wrong pool?

I don't really care who relayed the block when it comes to determining who mined the block.  They are two separate things.  I was interested in which pool mined the block.  Just because someone relay's the block, doesn't mean that they mined it, hence the current issue with the way BlockChain.info assigns which pool mines a block.

Yes, someone could place a tag in their Coinbase signature when they mine a block and that could create false attribution.  I just don't see the incentive to do so other than by a pool operator who's trying to hide the fact that they solved a block.  With blocks being solved randomly, it would be pointless to consistency fake the data.

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