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2621  Other / Beginners & Help / Re: Does anyone keep $10k+ Worth of BTC in Coinbase/Blockchain? on: January 01, 2015, 06:15:19 AM
I don't have $10k worth of BTC but to answer your Question, No, I don't even keep $100 worth BTC in any on-line wallet/exchange.
2622  Economy / Games and rounds / Re: ♦ ♣ ♥ ♠ Happy New Year from LuckyFlop.eu 100mbtc giveaway♦ ♣ ♥ ♠ on: January 01, 2015, 05:54:01 AM
I can't seem to be getting the verification email. (
Got it Smiley

Username: twister
Thanks
2623  Other / Beginners & Help / Re: Double spent on: January 01, 2015, 04:57:40 AM
So these were merely an attempt at double spends but only 1 of those Tx was confirmed, right? And other one was rejected.

Yes - it would be better if they (blockchain.info) used the term "double spend attempt" (as that is far more technically correct).

Note that even that description is perhaps a little "emotionally loaded" as in fact it may just be someone who made a genuine *mistake* by omitting a fee trying to resend with an appropriate fee (currently a "replace with proper fee" is not supported).

Thus the existence of two such txs doesn't imply that someone is actually trying to cheat someone else at all (but if you have received funds in such a manner of course it would be better to be aware of the situation than not - although as has been pointed out accepting 0 confirmations is never a very good idea).

As far as alt coins go - any blockchain that doesn't prevent double spends is *useless* so even if they don't use the same consensus method as Bitcoin one would assume they don't allow "actual double spends".


Yeah, it portrays to the general audience that there are so many double spends happening with bitcoin and gives the impression that maybe it's unsafe. When it's not actually true.

2624  Other / Beginners & Help / Re: Double spent on: January 01, 2015, 04:39:48 AM
It is really confusing, what are the double spends they show at blockchain?
https://blockchain.info/double-spends

These are not true double spends.  In every one of the cases listed at that link, there was never more than one transaction of the transactions that actually made it permanently into the blockchain.

Those are all situations where a previously unspent output was used as an input to one transaction, and then that exact same output was used as an input into the other transaction.  In some cases, both the transactions were seen on the network with zero confirmations at the same time, in other cases the second transaction wasn't transmitted until after the first transaction failed to get confirmed as was already dropped from the memory pool of most peers.

There are legitimate reasons to re-use an unspent output, and as I already mentioned in my previous post in this thread there are fraudulent reasons to do so.  Unless you were either the sender or the receiver of one of the transactions, it is impossible to know which (if any) of these are attempted scams and which occurred for legitimate reasons.



So these were merely an attempt at double spends but only 1 of those Tx was confirmed, right? And other one was rejected.

But Blockchain saw 2 tx from same unspent outputs and called it double spends but they weren't actually any double spends?
2625  Other / Beginners & Help / Re: Double spent on: January 01, 2015, 01:43:28 AM
A true double spend has never happened and cannot happen.  It is not possible for two different transactions to both include as inputs the same unspent outputs, and for both of those transactions to be permanently recorded in the blockchain.

However, people that don't understand the technical details of how bitcoin works like to use the words "double spend" to describe a variety of scams that allow an attacker to fool their target into believing that they've received bitcoins that they never actually received.

So, if you are asking about a true double spend, then no, it hasn't ever happened.  It never will.

If you are asking about a scam where someone is tricked into believing that they've received bitcoins that they haven't due to the target's own misunderstanding about how bitcoin works, then yes.  That has happened many times.

It is really confusing, what are the double spends they show at blockchain?
https://blockchain.info/double-spends
2626  Alternate cryptocurrencies / Service Discussion (Altcoins) / Re: How Do I Get My Coins Out Of MintPal? on: January 01, 2015, 01:33:38 AM
Sorry OP. You're late, if you were here before there were threads hinting that something is up with mintpal and some people were lucky to withdraw their funds just before they ran away. How much did you had there?
2627  Economy / Games and rounds / Re: Free 0.01BTC Giveaway!!!!! EXP:Jan 6th on: January 01, 2015, 01:11:51 AM
When will you people learn? OP is gaining free followers and in the end he'll declare one of his alts as winner. Don't be suckers, use your brains.
2628  Economy / Currency exchange / Re: I want to trade PayPal Cash for Bitcoins, will pay a premium.. on: December 31, 2014, 07:36:23 AM
Can't one transfer from PP to their bank accounts? I think that would be the best and safest option, just transfer it to your bank and then buy BTC from it.

Yeah, but if the buyer charges back, the seller's account goes into a negative balance, and they'll harass you to pay it off. If you try transferring money to the bank of the owner, there's no escrow service; thus it's difficult to tell whether or not the buyer/seller will actually follow through.

I know about the charge-backs. I meant why not OP withdraws his money to his bank account and then buy BTC from that? Like using a debit card with circle or coinbase.

In his OP it says he doesn't have a bank account Tongue
Hm. Does Virwox allow UN-verified Paypal?
2629  Economy / Economics / Re: Buy and Sell Bitcoins Live within 5 Min ? on: December 31, 2014, 07:30:33 AM
IMO it would actually probably be better to create, design and program any bot that you plan on using yourself. Bots tend to need to access your exchange account and if they are malicious then they can potentially steal money from your account, either by withdrawing funds or by causing you to make crazy trades that the creator knows about ahead of time

Yeah, better build one yourself or do it manually. I would never leave my money in hands of a bot. A little bug or bad script can make you lose a lot of money. So, make sure you test it with small amounts if you must use one.
2630  Economy / Services / Re: 777Coin AD Design Competition on: December 31, 2014, 07:23:57 AM
working on it now Smiley



Hope this is good to win Smiley

Wow, this certainly looks impressive, add a little "777" in between that wheel if you can.
2631  Economy / Micro Earnings / Re: SatoshiQuiz : Knowledge is Money : 500 satoshis per min on: December 31, 2014, 07:13:01 AM
Good site, although I think there is some problem with the questions, I am pretty sure I answered some of them correctly but it kept showing as incorrect. And the Captcha should be simpler.
2632  Economy / Trading Discussion / Re: How can I buy BTC with $3k cash / Western Union / Pro form statement 10k colltrl on: December 31, 2014, 07:02:00 AM
Contact DannyHamilton I think I saw him somewhere Selling Bitcoin for Western-Union, don't know whether he's selling or not right now. Or just open a thread in trading section, there are sellers who buy/sell for WU. Just make sure you use an Escrow. But you don't need one with Danny Smiley. GL

Here's his profile: https://bitcointalk.org/index.php?action=profile;u=60820
Even if he's not selling, he'll point you into right direction.
Btw here's my add : 1FeWC9i1riDXeQMqf2MJGf1k1MwNCak36B
2633  Other / Beginners & Help / Re: what happens when all bitcoins are mined? on: December 31, 2014, 06:54:46 AM
I'm fairly new to bitcoin and I'm still trying to understand some of the basics, but I'm curious about what will happen when all bitcoins have been mined. What will happen to all the "mining industry" that seems to drive the bitcoin world?

This question has been discussed several times, you'll find a lot of answers here:

https://bitcointalk.org/index.php?topic=176365.0
https://bitcointalk.org/index.php?topic=52673.0
https://bitcointalk.org/index.php?topic=3326.0
2634  Economy / Currency exchange / Re: I want to trade PayPal Cash for Bitcoins, will pay a premium.. on: December 31, 2014, 06:49:57 AM
Can't one transfer from PP to their bank accounts? I think that would be the best and safest option, just transfer it to your bank and then buy BTC from it.

Yeah, but if the buyer charges back, the seller's account goes into a negative balance, and they'll harass you to pay it off. If you try transferring money to the bank of the owner, there's no escrow service; thus it's difficult to tell whether or not the buyer/seller will actually follow through.

I know about the charge-backs. I meant why not OP withdraws his money to his bank account and then buy BTC from that? Like using a debit card with circle or coinbase.
2635  Economy / Services / Re: Up to 0.035 BTC weekly for YOUR SIGNATURE *New rules on: December 31, 2014, 06:44:08 AM
I am in. Completed all the steps mentioned in the OP. One question though; My week will be counted from today, right? Or is there a fixed day every week for the payments?
2636  Economy / Services / Re: Cryptomine.io - Enter your name for Jan - Sporadic posters, look here on: December 31, 2014, 06:21:32 AM
Payment received. Thanks

Too bad I didn't made it to the next month, I was really hoping that I would make the cut.  Embarrassed

All the payments for the Dec campaign have been sent
https://blockchain.info/tx/44abb219dee19e6e68e02ceee90a92625026ff29e99b812ff1ad9f31f2b09f3a
https://blockchain.info/tx/608f43e78a56963dcd4a71329459ed57a660acf59fcd7d4d54b923a2840f1241
https://blockchain.info/tx/b3e29ffb869146d07e199322a2b2f90373fb846b9c55a7e85587e2094affeff8

The list of re-enrolled paricipants. Please check you address and starting post number.

The list of new participants will be published soon, and they will have till 2nd Jan to update their signatures.

It seems quite a few posters attempted to reach the 100 posts and due to that the quality suffered. From next month disqualification criteria will be applied strictly. Its better to have 50 quality posts than 140 junk posts, the former will result in the payout for 50 posts and re-enrollment (if the campaign continues), and the latter may lead to 0 payout and no re-enrollment.

Happy New Year all Smiley


Removing sig. Kindly let me know if their is room and I'll re-add it.
2637  Economy / Games and rounds / Re: Giveaway 0.00010000 to 0.00020000 BTC tips per member www.cryptiv.com on: December 30, 2014, 10:44:01 AM

  • Sign up for www.cryptiv.com so that i can send you 0.00010000 BTC via twitter which you can claim from this website

Can you explain what you mean by this? I don't mind tweeting for 10k sats as it would help pay a Tx fee but I would prefer it directly in my wallet than going places to get it.
2638  Economy / Speculation / Re: January approaching. Bull run about to begin? on: December 30, 2014, 10:39:07 AM
Let's hear those reasons.  Wink

I do hope you're right though but I don't think Jan is it.
2639  Economy / Currency exchange / Re: I want to trade PayPal Cash for Bitcoins, will pay a premium.. on: December 30, 2014, 10:37:14 AM
Can't one transfer from PP to their bank accounts? I think that would be the best and safest option, just transfer it to your bank and then buy BTC from it.
2640  Economy / Gambling / Re: Is it safe to invest in Win88 on: December 30, 2014, 10:35:03 AM
Your profit will depend on player's losses. But if someone hit big you'll end up losing your investment.
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