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Poll
Question: Flipping a Bitcoin more often:
Lands on Heads - 2 (4.5%)
Lands on Tails - 2 (4.5%)
Lands on Edge - 2 (4.5%)
Rolls under the sofa - 8 (18.2%)
Defies gravity and just keeps flipping - 6 (13.6%)
Gets stolen by hackers - 24 (54.5%)
Total Voters: 43

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Author Topic: Heads or Tails?  (Read 1637 times)
cbeast
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April 04, 2012, 02:59:08 AM
 #1

This poll is not about Casacius physical Bitcoinsm but the actual money we spend for our favorite Bitcoin stuff.

Any significantly advanced cryptocurrency is indistinguishable from Ponzi Tulips.
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Kettenmonster
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bool eval(bool b){return b ? b==true : b==false;}


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April 06, 2012, 01:00:29 PM
 #2

Defies gravity and just keeps flipping, provided you speed it up properly.

The paining (sic!) is done with the QPainter class inside the paintEvent() method.
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April 06, 2012, 06:35:18 PM
 #3

surely flipping a coin increases its goxedness asymptotically to 1

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BubblesBit.com


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April 11, 2012, 09:32:44 PM
 #4

Tails never fails!

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Kettenmonster
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bool eval(bool b){return b ? b==true : b==false;}


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April 11, 2012, 10:35:52 PM
 #5

current majority: 40% Gets stolen by hackers
wtf?!? Hackers don´t steal! Them hackers point out weaknesses!

btw keep in mind: Money is never gone, it´s just elsewhere.

The paining (sic!) is done with the QPainter class inside the paintEvent() method.
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Poor impulse control.


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April 12, 2012, 12:52:21 PM
 #6

Stupid question, but which side is heads, again?

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cbeast
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Let's talk governance, lipstick, and pigs.


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April 12, 2012, 01:02:27 PM
 #7

Stupid question, but which side is heads, again?
Which side do you think it is?  Tongue

Any significantly advanced cryptocurrency is indistinguishable from Ponzi Tulips.
organofcorti
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April 12, 2012, 02:26:35 PM
 #8

Stupid question, but which side is heads, again?
Which side do you think it is?  Tongue

OK, you got me! I'll admit I have no idea which side heads is. Doesn't it depend on the current difficulty? Or network hashrate? Or something?

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April 12, 2012, 03:04:50 PM
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OK, you got me! I'll admit I have no idea which side heads is. Doesn't it depend on the current difficulty? Or network hashrate? Or something?

you think that is bitcoin that you are seeing? hmm... (c) senzonbakura

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cbeast
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April 12, 2012, 05:45:18 PM
 #10

Stupid question, but which side is heads, again?
Which side do you think it is?  Tongue

OK, you got me! I'll admit I have no idea which side heads is. Doesn't it depend on the current difficulty? Or network hashrate? Or something?
I suppose the analogy could be extended to such things, or even trading price. But then we would be speculating and that is yet another coin toss.

Any significantly advanced cryptocurrency is indistinguishable from Ponzi Tulips.
organofcorti
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April 12, 2012, 09:17:09 PM
 #11

Stupid question, but which side is heads, again?
Which side do you think it is?  Tongue

OK, you got me! I'll admit I have no idea which side heads is. Doesn't it depend on the current difficulty? Or network hashrate? Or something?
I suppose the analogy could be extended to such things, or even trading price. But then we would be speculating and that is yet another coin toss.

Analogy? You've stumped me again. I just wanted to play two-up with my bitcoins on the 25th. I'll need to know which side is heads.

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April 12, 2012, 10:03:06 PM
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Stupid question, but which side is heads, again?
Which side do you think it is?  Tongue

OK, you got me! I'll admit I have no idea which side heads is. Doesn't it depend on the current difficulty? Or network hashrate? Or something?
I suppose the analogy could be extended to such things, or even trading price. But then we would be speculating and that is yet another coin toss.

Well,when I "flip" my coins,I always get more of em  Grin

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September 15, 2012, 06:27:50 AM
 #13

rolls under the sofa, almost every single time ... I suck at coin flipping -.-
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September 15, 2012, 07:22:23 PM
 #14

Wait a minute.

Would coin tossing with a bitcoin transaction actually be possible?

Couldn't you use any random data generated by a transaction to determine either state '1' or '0'? One that's publicly visible and unpredictable of course.



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September 16, 2012, 07:16:23 AM
 #15

Wait a minute.

Would coin tossing with a bitcoin transaction actually be possible?

Couldn't you use any random data generated by a transaction to determine either state '1' or '0'? One that's publicly visible and unpredictable of course.




Maybe. I don't see how you'd get the data to stay on the kip and the flip effectively. It would totally suck for two-up. I'm sticking with the old pennies.

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September 16, 2012, 03:57:01 PM
 #16

Wait a minute.

Would coin tossing with a bitcoin transaction actually be possible?

Couldn't you use any random data generated by a transaction to determine either state '1' or '0'? One that's publicly visible and unpredictable of course.




Maybe. I don't see how you'd get the data to stay on the kip and the flip effectively. It would totally suck for two-up. I'm sticking with the old pennies.

Isn't a transaction ID created at random?

Couldn't you use that to determine 1/0?


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September 16, 2012, 05:06:45 PM
 #17

Wait a minute.

Would coin tossing with a bitcoin transaction actually be possible?

Couldn't you use any random data generated by a transaction to determine either state '1' or '0'? One that's publicly visible and unpredictable of course.

Maybe. I don't see how you'd get the data to stay on the kip and the flip effectively. It would totally suck for two-up. I'm sticking with the old pennies.

Isn't a transaction ID created at random?

Couldn't you use that to determine 1/0?

in order to calculate the ID hash of the Tx that is used in the Merkle Tree, one needs to SHA hash the whole Tx message as defined in the Protocol Specification wiki page twice.

So, it is not "random" per se.  Since the creator of the transaction has some choice of what inputs to use and complete control of what outputs to use, they could keep trying different combinations until they got a txid meeting certain criteria (such as being even or odd, for a coin flip.)

Edit: yes, more involved criteria for the txid are harder to find (it takes more tries), but even/odd is easy.

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September 16, 2012, 07:51:06 PM
 #18

^if that were the case then using the same inputs and outputs with the same send amounts twice would also generate the same txid twice. but that can't be.

what makes a txid unique?





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September 17, 2012, 01:43:06 AM
 #19

^if that were the case then using the same inputs and outputs with the same send amounts twice would also generate the same txid twice. but that can't be.

what makes a txid unique?

The fact that you can't use the same input(s) twice -- that's what a double spend is.  An input comes from someone else paying you (or coins being generated), and can only be spent once, spending the whole value at that time. 

If you don't want to actually spend the whole value to other people, you can send the change back to yourself at a "change address."  (Clients do it automatically.)  That change address can then be used as the input for another transaction.

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September 17, 2012, 03:07:03 AM
 #20

scintill,

blockchain.info offers a "Time received" for each transaction. Any chance it gets that info from the blockchain? (But it doesn't seem like it does to me)


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