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April 01, 2015, 09:22:49 AM *
News: Latest stable version of Bitcoin Core: 0.10.0 [Torrent]
 
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1  Other / Meta / Re: Avatars re-enabled on: Today at 06:17:43 AM
Smiley

If you especially dislike the avatar you were given, uploading a new avatar (or reuploading your current one) will give you a random new one. If anyone has any ideas for more "fool" avatars to add, post them here and I might add them later today.

The avatar feature will work properly after April 1.
2  Other / Meta / Re: Avatars re-enabled on: Today at 04:21:02 AM
Can we have animated gifs?

No.
3  Other / Meta / Avatars re-enabled on: Today at 04:08:50 AM
It is now once again possible to upload an avatar to the forum. You must be a full member or above to upload an avatar. Go to this page (also linked in your "Forum Profile Information" settings):
https://bitcointalk.org/index.php?action=avatar

You can only upload new avatars: you can't choose one from the server or use a link as you could before. (If you are currently using one of these types of avatars, the upload avatar page will say that you don't have an avatar.) Also, uploaded avatars are not resized: they are simply rejected if they are too large.
4  Other / Meta / Re: SSL changes 2015-03-31T20:00UTC on: March 31, 2015, 10:46:07 PM
The *.bitcointalk.org cert (used for the image proxy) was renewed a day or two ago. The actual RSA key didn't change. I didn't change the supported cipher suites. The certificate authority does signing using SHA-256 instead of SHA-1 now, though.
5  Other / Meta / Re: Email from Bitcointalk "admin" on: March 31, 2015, 10:42:06 PM
Yeah, it's a scam and not actually from bitcointalk.org. Your email client should have marked it as spam.
6  Other / Meta / Re: Staff Hypocrisy and Selective Enforcement of Rules on: March 28, 2015, 02:38:13 AM
So if some one who trusts me also trusts the default trust, then I become untrusted.

That's not how it works. If someone adds you directly to their trust list, then no exclusions will cause you to be removed.

Your constant obsessive ramblings about this prove that you don't belong in the default trust network.
7  Other / Meta / Re: A more effective way to reduce signature spamming on: March 26, 2015, 03:47:43 PM
Yeah, I'm thinking that a good response to sig spam might be to ban the person for ~5 days and disable all but the most basic styling in their signature for 60+ days. (With times increasing for repeat offenders.)
8  Other / Meta / Re: Why is the trust changing so much? on: March 25, 2015, 05:53:37 AM
The trust score algorithm is pretty stupid. I've been adjusting it in various ways to make it work most of the time, but there's really no good reason why people get particular scores, especially in the negative direction.
9  Other / Meta / Re: Activity & new membergroup limits on: March 21, 2015, 08:22:13 PM
Out of curiosity, how would someone who can read your code be able to accurately predict when someone will become legendary without the secret seed?

I meant that the secret seed is in the code, so if you have access to it then you'll be able to calculate the number directly.
10  Other / Meta / Re: Activity & new membergroup limits on: March 21, 2015, 07:27:18 PM
If I have many examples when one out of two variables is known and the other is unknown and the output is always the same, then I would think that it would be possible to determine what the unknown variable is. I would think it would be similar to figuring out the private key that was created using a weak RNG.

I would think that someone would essentially use some level of computing power to "guess"/hash what the secret seed is based on the above known variables.

Nope:

I must be missing something then.

Let's say I (user id 17768) achieve Legendary status next tuesday, when my activity goes from 798 to 812. That means that:

Code:
799  <= 775 + conv(substr(sha1(concat('17768',secretSeed)), 1, 2), 16, 10) <= 812
24   <=       conv(substr(sha1(concat('17768',secretSeed)), 1, 2), 16, 10) <= 37
0x18 <=            substr(sha1(concat('17768',secretSeed)), 1, 2)          <= 0x25

And by removing the substr(…, 1, 2) part we infer that secretSeed is either:

- some word such as sha1(concat('17768',secretSeed)) results in any hash starting with 18, or
- some word such as sha1(concat('17768',secretSeed)) results in any hash starting with 19, or
- some word such as sha1(concat('17768',secretSeed)) results in any hash starting with 1a, or
...
- some word such as sha1(concat('17768',secretSeed)) results in any hash starting with 25.

And it isn't difficult to find those 14 possible seeds, right?


That's like trying to find the equation of some particular line when you only have one point on the line. You can find an infinite number of possible lines, but there's essentially no chance that you'll find the correct line. And with SHA-1, you won't get any closer to finding the true "line" no matter how many points you have. There are very many possible seeds which would perfectly match the current list of Legendaries, but only one of them will also match all future Legendaries.

I was under the understanding this is why bitcoin related gambling sites generally have their server seed expire after (usually) 24 hours and have their 'rolls' result in a number that is 4 digits (usually two before and two after a decimal).

I'm not sure exactly how those sorts of gambling sites do their provable fairness, but they may be trying to protect against a different type of attack.
11  Other / Meta / Re: Activity & new membergroup limits on: March 21, 2015, 06:15:39 PM
In theory, if you were to monitor when enough users are promoted to legendary status, it would be possible to reverse engineer what the secret seed is (you would however need to take into consideration that the required activity for each member may not be divisible by 14), although it would probably take more effort/work then it is really worth.

If you can find the secret seed by looking at when people are promoted, then you've (more-or-less) broken SHA-1's preimage resistance. This has never been done before, so if you do it, you should probably publish a paper about it. Smiley
12  Other / Meta / Re: What is Bitcoin-Forums.net? on: March 21, 2015, 02:55:15 PM
Google is stupid and has trouble differentiating bitcointalk.org from mirrors. That site is trying to exploit this in order to occasionally place above or near bitcointalk.org in search results, and then use this position to make money in various ways. It seems that currently they were paid to increase the click stats of some specific URLs, and they're doing this by putting some extra iframes in each page.
13  Economy / Auctions / Advertise on this forum - Round 147 on: March 19, 2015, 03:19:27 AM
The forum sells ad space in the area beneath the first post of every topic page. About 25% of ad income goes to the forum moderators as thanks for all of their work. (There are many moderators, so each moderator gets only a small amount -- moderators should be seen as volunteers, not employees.) The rest is stored in the forum's treasury (verifiably), where it sits until the forum needs it.

Ads are allowed to contain any non-annoying HTML/CSS style. No images, JavaScript, or animation. Ads must appear 3 or fewer lines tall in my browser (Firefox, 900px wide). Ad text may not contain lies, misrepresentation, or inappropriate language. Ads may not link directly to any NSFW page. Ads may be rejected for other reasons, and I may remove ads even after they are accepted.

There are 10 total ad slots which are randomly rotated. So one ad slot has a one in ten chance of appearing. Eight of the slots are for sale here. Ads appear only on topic pages with more than one post, and only for people using the default theme.

The ad lasts at least 7 days starting from when I put it up. (However, if you look at the ad history you'll see that ads usually get at least 8 days, and sometimes as many as 10, but this is random and definitely not guaranteed.)

Stats

Exact historical impression counts per slot:
https://bitcointalk.org/adrotate.php?adstats

Info about the current ad slots:
https://bitcointalk.org/adrotate.php?adinfo

Ad blocking

Hero/Legendary members, Donators, VIPs, and moderators have the ability to disable ads. I don't expect many people to use this option. These people don't increase the impression stats for your ads.

I try to bypass Adblock Plus filters as much as possible, though this is not guaranteed. It is difficult or impossible for ABP filters to block the ad space itself without blocking posts. However, filters can match against the URLs in your links, your CSS classes and style attributes, and the HTML structure of your ads.

To prevent matches against URLs: I have some JavaScript which fixes links blocked by ABP. You must tell me if you want this for your ads. When someone with ABP and JavaScript enabled views your ads, your links are changed to a special randomized bitcointalk.org URL which redirects to your site when visited. People without ABP are unaffected, even if they don't have JavaScript enabled. The downsides are:
- ABP users will see the redirection link when they hover over the link, even if they disable ABP for the forum.
- Getting referral stats might become even more difficult.
- Some users might get a warning when redirecting from https to http.

To prevent matching on CSS classes/styles: Don't use inline CSS. I can give your ad a CSS class that is randomized on each pageload, but you must request this.

To prevent matching against your HTML structure: Use only one <a> and no other tags if possible. If your ads get blocked because of matching done on something inside of your ad, you are responsible for noticing this and giving me new ad HTML.

Designing ads

Make sure that your ads look good when you download and edit this test page:
https://bitcointalk.org/ad_test.html
Also read the comments in that file.

I will send you more detailed styling rules if you win slots in this auction (or upon request).

Auction rules

You must be at least a Jr Member to bid. If you are not a Jr Member and you really want to bid, you should PM me first. Tell me in the PM what you're going to advertise. You might be required to pay some amount in advance. Everyone else: Please quickly PM newbies who try to bid here to warn them against impersonation scammers.

Post your bids in this thread. Prices must be stated in BTC per slot. You must state the maximum number of slots you want. When the auction ends, the highest bidders will have their slots filled until all eight slots are filled.

So if someone bids for 8 slots @ 5 BTC and this is the highest bid, then he'll get all 8 slots. If the two highest bids are 8 slots @ 4 BTC and 1 slot @ 5 BTC, then the first person will get 7 slots and the second person will get 1 slot.

The notation "2 @ 5" means 2 slots for 5 BTC each. Not 2 slots for 5 BTC total.

- When you post a bid, the bids in your previous posts are considered to be automatically canceled. You can put multiple bids in one post, however.
- All bid prices must be evenly divisible by 0.05.
- The bidding starts at 0.50.
- I will end the auction at an arbitrary time no more than 12 days from now. (I will probably end the auction 1-3 days before the ads are scheduled to go up.)
- If two people bid at the same price, the person who bid first will have his slots filled first.
- Bids are considered invalid and will be ignored if they do not specify both a price and a max quantity, or if they could not possibly win any slots

If these rules are confusing, look at some of the past forum ad auctions to see how it's done.

I reserve the right to reject bids, even days after the bid is made.

You must pay for your slots within 24 hours of receiving the payment address. Otherwise your slots may be sold to someone else, and I might even give you a negative trust rating. I will send you the payment information via forum PM from this account ("theymos", user ID 35) after announcing the auction results in this thread. You might receive false payment information from scammers pretending to be me. They might even have somewhat similar usernames. Be careful.
14  Economy / Auctions / Re: Advertise on this forum - Round 146 on: March 19, 2015, 03:14:57 AM
Auction ended. Final result:
Slots BTC/Slot Person
4 2.20 betcointm
1 2.20 bitkings
2 2.20 MariaQin
1 2.15 Stunna

You say No images but here https://bitcointalk.org/adrotate.php?adinfo there are 3 images banner. That's not fair.

Sometimes I allow very small (data-wise) data URI images, but you need to pre-approve it with me first.

I prefer that you not do this. It also makes your ad much easier for ad blockers to block.

2 @ 1.05
4@2

You're too new. Read the OP.
15  Other / Meta / Re: CanaryInTheMine is further abusing the trust system [Edit] on: March 17, 2015, 08:30:08 PM
Thank you. I totally missed that link Smiley

Edit: It just comes up as a blank white page for me.

Your high depth causes the page to time out. You'll have to temporarily reduce that.
16  Other / New forum software / Re: Question about accounts with invalid email addresses on: March 17, 2015, 08:21:43 PM
To prevent people from thinking, "This is a phishing site trying to steal my password!", the primary method of resetting your password will be email reset. A secondary (maybe slightly-hidden) method will be to use your current password. So you needn't worry about having an invalid email address now.

A valid email address might be required in the new software, though. I'm not sure about that yet.
17  Other / Meta / Re: Russian section is not moderated on: March 16, 2015, 08:29:28 PM
You guys were having some sort of political election, which is not what we need. This is not an election for Ultimate Dictator of all bitcointalk.org Russians -- you just need a "janitor" who can clean up the spam. I don't know whether fsb4000, Pivo, etc. are good people or have good politics. But they report things only very rarely, so I'm pretty sure that they wouldn't be good moderators.

Please help xandry be a good moderator. If he makes a mistake, calmly try to work it out with him. If that fails, post about it here in Meta. xandry cannot see user IPs, he can only ban newbies, and I can undo anything he does.
18  Other / New forum software / Re: Screenshots from epochtalk on: March 16, 2015, 07:59:23 PM
but it 'appear's' that we need to install bitcointalk.org's forum software on OUR machines before we can login to bitcointalk.org, is this correct?

These are instructions to install the server software that will in the future run on bitcointalk.org. Forum users will not be required to install anything with the new software.

Note that the software is not yet feature-complete (in particular, the Web design is far from done), and the public repository doesn't contain everything already done.
19  Bitcoin / Development & Technical Discussion / Re: How does the protocol broadcast hidden services? on: March 16, 2015, 12:56:52 AM
When the core client runs through Tor and looks for seed nodes. Is DNS still used? And if so, does it go through the Tor proxy too?

Yes, if you configure Bitcoin to use Tor then it will use Tor for the DNS seeds.

A good thing that BitcoinJ does is that it makes sure that it connects to the DNS seeds via at least two(?) different Tor exit nodes. I don't think that Bitcoin Core does this, though it might be a good idea.
20  Bitcoin / Development & Technical Discussion / MOVED: Help install beta of the new forum on: March 15, 2015, 11:19:59 PM
This topic has been moved to New forum software.

https://bitcointalk.org/index.php?topic=991708.0
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