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Author Topic: Blockchain.info - Bitcoin Block explorer & Currency Statistics  (Read 233531 times)
giszmo
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November 16, 2012, 05:53:43 PM
 #1641

What about this... The owner of a website puts a file on their website called bitcoin_tags.json or something like that. This would server a similar purpose to sitemap.xml but instead contains a number of bitcoin addresses and labels.

For example http://wikileaks.org/bitcoin_tags.json

{
 "tags" : {
  "address" : "1HB5XMLmzFVj8ALj6mfBsbifRoD4miY36v",
  "tag" : "Donations",
  "sig" : "signature of concatenated tag and domain"
 }
}

Once the owner of a website has added the file they can suggest that blockchain.info indexes it, once indexed blockchain.info will display the new tag accordingly. This has the advantage of.

* maintainable, webmaster can update bitcoin_tags.json as they choose. Deadlinks will be removed from the database.
* Decentralised, any service can index tags.
* More secure, both the domain and the address signature is verified. Tags can be independently verified if necessary and little moderation is needed.
You should only trust tags fetched via https, otherwise a man-in-the-middle could hijack the .json file and replace the address and signature.
True … sort of. I'd be more interested in such a man in the middle being found in the wild than that I fear the risk of it aka I consider https being optional should be fine. It could be marked in the list as extra feature. Also showing historic tags or at least the timestamp of when a tag changed would help to get people aware of potential issues.

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November 17, 2012, 02:01:06 PM
 #1642

There is a problem with the mixer: it does not pay a fee for the outgoing transaction, so often it takes ages to confirm.  I have been waiting four hours so far  Sad
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November 18, 2012, 07:56:23 AM
 #1643

Has their always been a password on the iphone app? I've used mine a few months and right when I sent a large transaction to my phone the app stopped working. I logged in with my pc about a month ago and backed up the wallet or atleast I though. I linked my email to my account but now it says email not found, and without a password my wallet file doesn't let me access it either.
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November 18, 2012, 02:26:53 PM
 #1644

But it looks like blockchain.info has a failure mode where it looses connection to some backend, and data does not update.

Apologies, yes one server lost it's database connection. If it problem ever occurs again it should auto-reconnect now.

This would make most sense for you as this would be an incentive to open an account on blockchain.info. Up/Down-voting could be done by "donation" addresses which again would be good for you.
As long as you show the amount of donations as justification to rate something high, you should not be blamed for misrepresenting stuff and upon clear abuse you could close accounts or users and mark the tag as coming from a closed account. Showing tags from closed accounts last, only optionally or not at all would also be very clear to the user.r liability.

For now a tag submission page is available at http://blockchain.info/tags. Also for a bit of geeky fun I indexed the addresses contained in signatures from bitcointalk.org example: http://blockchain.info/address/1H4sGgNSRvRuiUsbucsQBNFWhZcLnL2KW1

It doesn't include up or down voting as the tags in this context probably serve a slightly different purpose than your original idea giszmo. Which was to allow people to tag addresses as belonging to scammers, add comments etc? While I could see this being useful in some situations it has the danger of morphing into a blacklist which in my opinion is a bad idea all round.

You should only trust tags fetched via https, otherwise a man-in-the-middle could hijack the .json file and replace the address and signature.
(and I think you'd want "tags" to be an Array of Objects...)

Yep, your right on both counts. Extending this feed idea a bit further, what if it wasn't just for individuals websites but could the feeds could serve as a public directory of users as well. Basically a map of label@domain.org.

For example wallet services could all have a "Make address public" option which would then publish an address and label to the wallet services bitcoin_tags.json feed. Other wallet services can then index the feed of each service to build a public address book.

e.g. If I published the label "piuk" in the blockchain feed. Instawallet could then index the feed and resolve "piuk@blockchain.info" to the correct address. Bitcoin-Qt could publish to a @bitcoinfoundation.org feed, Electrum to @ecdsa.org etc.

RE: adding data to the blockchain: Did you see Stefan Thomas' nifty idea for using ECC math to tie a hash to a transaction without any blockchain bloat?

It's a nice trick, but is missing the most desired property that embedding data in the blockchain has, in that data is guaranteed to be permanently stored for as long as the bitcoin network is running.

There is a problem with the mixer: it does not pay a fee for the outgoing transaction, so often it takes ages to confirm.  I have been waiting four hours so far  Sad

This should be patched this now, the mixer will be much more likely to pay a fee from now on.

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November 18, 2012, 09:29:35 PM
 #1645

my gtalk notifications seem to have stopped working... anyone else getting this?

[EDIT 21:50 UTC they all just came through...]

Will

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November 19, 2012, 12:09:24 AM
 #1646

This would make most sense for you as this would be an incentive to open an account on blockchain.info. Up/Down-voting could be done by "donation" addresses which again would be good for you.
As long as you show the amount of donations as justification to rate something high, you should not be blamed for misrepresenting stuff and upon clear abuse you could close accounts or users and mark the tag as coming from a closed account. Showing tags from closed accounts last, only optionally or not at all would also be very clear to the user.r liability.

For now a tag submission page is available at http://blockchain.info/tags. Also for a bit of geeky fun I indexed the addresses contained in signatures from bitcointalk.org example: http://blockchain.info/address/1H4sGgNSRvRuiUsbucsQBNFWhZcLnL2KW1

It doesn't include up or down voting as the tags in this context probably serve a slightly different purpose than your original idea giszmo. Which was to allow people to tag addresses as belonging to scammers, add comments etc? While I could see this being useful in some situations it has the danger of morphing into a blacklist which in my opinion is a bad idea all round.


This service should used every WordPress bloggers for micropayments ,donation & Crowdfund blogging.

Supporting people with beautiful creative ideas. Bitcoin is because of the developers,miners and users work together.
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November 19, 2012, 02:21:22 AM
 #1647

For now a tag submission page is available at http://blockchain.info/tags. Also for a bit of geeky fun I indexed the addresses contained in signatures from bitcointalk.org example: http://blockchain.info/address/1H4sGgNSRvRuiUsbucsQBNFWhZcLnL2KW1

Hey, cool, I'm happy Smiley

It doesn't include up or down voting as the tags in this context probably serve a slightly different purpose than your original idea giszmo. Which was to allow people to tag addresses as belonging to scammers, add comments etc? While I could see this being useful in some situations it has the danger of morphing into a blacklist which in my opinion is a bad idea all round.

Well, if the blacklist doesn't come simply because nobody does it, I'm sure, somebody will do it some day.
Only if there is something some people might use as a black list, awareness rises and proposals to have clients launder by default will have a chance to get implemented for whatever reason.

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November 19, 2012, 03:55:43 AM
 #1648

For now a tag submission page is available at http://blockchain.info/tags. Also for a bit of geeky fun I indexed the addresses contained in signatures from bitcointalk.org example: http://blockchain.info/address/1H4sGgNSRvRuiUsbucsQBNFWhZcLnL2KW1

Hey, cool, I'm happy Smiley

… but would be happier if I would see tags in the taint analysis Wink

teste
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November 19, 2012, 02:17:29 PM
 #1649

I would like to suggest a feature to create a donation list.

1- Add on wallet home tab a button: (Create a Donation List)
2- When the user click on the button, will open a window to add some informations like:
2.1- Option to add bitcoin addresses that you will donate.
2.2- Frequency of donation. Monthly, weekly, annually...
2.3- Percentage that each address of the list will receive. Or if all addresses will receive evenly.
2.4- Maximum of Btc or Btc Fiat price that all addresses on the list will receive on the frequency stated on 2.2.
3- Will be interesting index all users donation list in one public list and show many informations like: addresses that have more people donating, addresses that received more donations,....

What do you think?

Stephen Gornick
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November 20, 2012, 02:23:33 AM
 #1650

The API page mentions the "Unspent outpus" API method, but the implementation differs from the online documentation.

Quote
Unspent outputs   
http://blockchain.info/unspent/?address=$hash_160&address=$hash_160
Multiple Addresses Allowed

 - http://blockchain.info/api/blockchain_api

But it appears it is only responding properly when using $bitcoin_address not $hash_160,

Also, the example shows a trailing slash in the URL path.  There should be no trailing slash.  e.g.,   /unspent?address=   instead of  /unspent/?address=


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November 20, 2012, 01:24:38 PM
 #1651

… but would be happier if I would see tags in the taint analysis Wink

You Can. Here is a real life use case:

The users "mralbi" has had 600 BTC stolen by a Trojan on his/her PC (https://bitcointalk.org/index.php?topic=126024.0). The address the funds were sent to is http://blockchain.info/address/1Q3KFL7Z1BTpUboDaU6Qj3t9xCXWpzNntS. On the Taint analysis you can see there are two addresses tagged: "nyana" and Mt.Gox" http://blockchain.info/taint/1Q3KFL7Z1BTpUboDaU6Qj3t9xCXWpzNntS. Theoretically the owners of these tags could be contacted and offered a bounty to provide any information they can on the address 1Q3KFL7Z1BTpUboDaU6Qj3t9xCXWpzNntS. Perhaps they have sent a transaction to that address before. This is just the beginnings of what might be possible in future but does stress the importance of keeping addresses isolated from one another if anonymity is desired.

I would like to suggest a feature to create a donation list.

1- Add on wallet home tab a button: (Create a Donation List)
2- When the user click on the button, will open a window to add some informations like:
2.1- Option to add bitcoin addresses that you will donate.
2.2- Frequency of donation. Monthly, weekly, annually...
2.3- Percentage that each address of the list will receive. Or if all addresses will receive evenly.
2.4- Maximum of Btc or Btc Fiat price that all addresses on the list will receive on the frequency stated on 2.2.
3- Will be interesting index all users donation list in one public list and show many informations like: addresses that have more people donating, addresses that received more donations,....

What do you think?

If I understand correctly, recurring payments for donations? Recurring payments are problematic because we cannot send transactions on the users behalf. However it would certainly be possible to show a reminder when the user next logs in. I have added it to the ideas list, thanks.

The API page mentions the "Unspent outpus" API method, but the implementation differs from the online documentation.

Thanks, I've updated the documentation now.

-------

HTML 5 Desktop notifications can now be enabled in Account Settings. Currently supported in Safari and chrome.


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November 20, 2012, 03:13:27 PM
 #1652

Yes, what I meant is recurring payments for donations. I think show a reminder is okay.

teste
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November 20, 2012, 03:21:38 PM
 #1653

Piuk,

I still reproduce this problem: https://bitcointalk.org/index.php?topic=40264.msg1308240#msg1308240

Did you look it?

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November 20, 2012, 04:09:49 PM
 #1654

I logged on wallet today and see something strange:

I clicked on btc balance to switch to USD currency. The popup window with information: This show the balance....  (is very big) and I only can hide the popup if I click again on the balance. I think the popup should hide if I click in any place of the page.

I'm on a Blackberry Tablet.

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November 20, 2012, 07:39:10 PM
 #1655

… but would be happier if I would see tags in the taint analysis Wink

You Can. Here is a real life use case:

The users "mralbi" has had 600 BTC stolen by a Trojan on his/her PC (https://bitcointalk.org/index.php?topic=126024.0). The address the funds were sent to is http://blockchain.info/address/1Q3KFL7Z1BTpUboDaU6Qj3t9xCXWpzNntS. On the Taint analysis you can see there are two addresses tagged: "nyana" and Mt.Gox" http://blockchain.info/taint/1Q3KFL7Z1BTpUboDaU6Qj3t9xCXWpzNntS. Theoretically the owners of these tags could be contacted and offered a bounty to provide any information they can on the address 1Q3KFL7Z1BTpUboDaU6Qj3t9xCXWpzNntS. Perhaps they have sent a transaction to that address before. This is just the beginnings of what might be possible in future but does stress the importance of keeping addresses isolated from one another if anonymity is desired.

Oh, well hidden. Now I see it. Searching for "(" helps finding them. Can I haz filter for tagged addresses? Pleeez Smiley

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November 20, 2012, 07:41:31 PM
 #1656

http://blockchain.info/address/17By91NmAZ6sYnfZHnkyDgM76V7eztytDq

You might want to change the layout for the tag thingy though. Now this looks like porn advertisement (which it is but you are not earning from showing it which it looks like).

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November 20, 2012, 08:28:57 PM
 #1657

Currently aware of an issue affecting one server. Rebooting now.

Edit: Resolved

Stephen Gornick
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November 20, 2012, 08:47:37 PM
 #1658

Currently aware of an issue affecting one server. Rebooting now.

Edit: Resolved

Problems yet?

My wallet isn't showing any funds or any transactions.  It looks like a new, empty wallet.


Oh, still shows "disconnected".

[Update: Ok, that was user error.

The wallet shows 0 balance because I had "archived" the couple of addresses that still had funds in them.

Feature request: Would it be possible for me to remove the filter in My Transactions which only shows transactions for addresses that I haven't archived?  The pull-down says "All" but that apparently means "All that aren't archived".]

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November 20, 2012, 11:22:27 PM
 #1659

Piuk,

I still reproduce this problem: https://bitcointalk.org/index.php?topic=40264.msg1308240#msg1308240

Did you look it?

I can't reproduce this. The popup summary is shown in a frame so you may have to wait for it to load the new transaction.

You might want to change the layout for the tag thingy though. Now this looks like porn advertisement (which it is but you are not earning from showing it which it looks like).

Maybe a disclaimer is needed, I don't mind it being liberal what text is shown though.

Feature request: Would it be possible for me to remove the filter in My Transactions which only shows transactions for addresses that I haven't archived?  The pull-down says "All" but that apparently means "All that aren't archived".

Sure, this can be added. The select box would probably be better as Active (Default), All, Sent, Received Escrow.

* SD winnings statistics should now be accurate (Reload the page, clear cache is necessary).

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November 21, 2012, 07:09:48 AM
 #1660

You might want to change the layout for the tag thingy though. Now this looks like porn advertisement (which it is but you are not earning from showing it which it looks like).

Maybe a disclaimer is needed, I don't mind it being liberal what text is shown though.
Yes, it is not obvious at all that it is a tag associated with the address, it looks like it is just an ad being run by your site.  Perhaps you should add a label saying something like "owner-supplied address tag".  I am sure you can find a better wording Smiley
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