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Topic: probability of generating a block solo mining Bitcoin vs lottery - page 2. (Read 31831 times)

legendary
Activity: 1176
Merit: 1015
I was on eclipsemc pool with my ~950GH, got blocks solved every few days.

Whoa dude thats a lot of hash-power. A ASIC farm?
legendary
Activity: 952
Merit: 1000
I heard that the chance to generate a block is like playing a lottery, like the odds are 1 in 8,000,000. Is this true?

Sort of. For pooled mining, 300MH/s means you're checking 300,000,000 hashes every second to find a valid share, and should get about 4 - 4.5 shares a minute. A share is anything with a difficulty >= 1. If the share's difficulty is over 4.85 million (the current difficulty), then it's a successful block.

For solo mining, we don't care about diff=1 shares. All we care about are the diff>4.85million, or the block solvers. And yes, a diff=4.85million share will pop up about once for every 4.85million diff=1 shares.

So as far as the lottery analogy is concerned, it's more like 1 in 4,850,000, but that lottery happens 4-5 times a second, not once per day like the PowerBall.

4-5 times a second means 84500 (seconds in a day) times 3 which is 338000 and 4,850,000 divided by 338000 is 14, so that's a 1/14 chance a day. So basically 1 block every couple weeks. But somethin' tells me it's a lil harder than that. What do you guys think about this?
No, it's 4-5 shares a minute, not a second. Actually right around 4.7shares / minute. Also, why did you multiple by 3 randomly? 335MH/s will average out to just under 6,800 shares per day (4.7*60*24). With a difficulty of 65.8Million, it's more like 6,800/65800000, which is almost a 1/10,000 chance.
vip
Activity: 980
Merit: 1001
I heard that the chance to generate a block is like playing a lottery, like the odds are 1 in 8,000,000. Is this true?

Sort of. For pooled mining, 300MH/s means you're checking 300,000,000 hashes every second to find a valid share, and should get about 4 - 4.5 shares a minute. A share is anything with a difficulty >= 1. If the share's difficulty is over 4.85 million (the current difficulty), then it's a successful block.

For solo mining, we don't care about diff=1 shares. All we care about are the diff>4.85million, or the block solvers. And yes, a diff=4.85million share will pop up about once for every 4.85million diff=1 shares.

So as far as the lottery analogy is concerned, it's more like 1 in 4,850,000, but that lottery happens 4-5 times a second, not once per day like the PowerBall.

4-5 times a second means 84500 (seconds in a day) times 3 which is 338000 and 4,850,000 divided by 338000 is 14, so that's a 1/14 chance a day. So basically 1 block every couple weeks. But somethin' tells me it's a lil harder than that. What do you guys think about this?
nice bump for old thread, but difficulty went up a bit
The average time to generate a block at 300.0 Mhps, given difficulty of 65750060.1491, is 29 years, 44 weeks, 2 days, 0 hours, 14 minutes, and 50 seconds
and difficulty going up at least 20% in 6 days

Though a guy on my pool did find a block on an overclocked 333mh block eruptor after mining on it a week or 2 - there is luck involved Wink
newbie
Activity: 23
Merit: 0
I heard that the chance to generate a block is like playing a lottery, like the odds are 1 in 8,000,000. Is this true?

Sort of. For pooled mining, 300MH/s means you're checking 300,000,000 hashes every second to find a valid share, and should get about 4 - 4.5 shares a minute. A share is anything with a difficulty >= 1. If the share's difficulty is over 4.85 million (the current difficulty), then it's a successful block.

For solo mining, we don't care about diff=1 shares. All we care about are the diff>4.85million, or the block solvers. And yes, a diff=4.85million share will pop up about once for every 4.85million diff=1 shares.

So as far as the lottery analogy is concerned, it's more like 1 in 4,850,000, but that lottery happens 4-5 times a second, not once per day like the PowerBall.

4-5 times a second means 84500 (seconds in a day) times 3 which is 338000 and 4,850,000 divided by 338000 is 14, so that's a 1/14 chance a day. So basically 1 block every couple weeks. But somethin' tells me it's a lil harder than that. What do you guys think about this?
hero member
Activity: 546
Merit: 500
Was funny how you call it a lottery, though I got 2 when I first started learning about bitcoins. The bad of it like you say you need alot of processing power and I didn't Sad and I missed out. ALSO, even if I did I'm not quite sure I had it setup right to deposit to my account and would have been mining for free Cry.

Might have been the fact that I had a fresh index but I wish I had that luck on a more known lottery in my area. I'm going to try again if I ever get my bitcoin miner Roll Eyes Grin
legendary
Activity: 3248
Merit: 1070
but what about if i get lucky?
easy 25 btc

at 300megahash in a pool you need more than 25 months anyway to get a reward of a block(25bitcoin)

i'm talking at when the diff was 5m
legendary
Activity: 952
Merit: 1000
Thanks.

So it is possible to solo mine and be extremely lucky and hit a block right away, except the chance of this happening is currently 1 in 4,850,000
Yep. Pretty much.
Short answer: Not worth it. Get a pool. I recommend Ozcoin.
Yeah thought so. Smiley cheers pal.
Anytime! Wink
legendary
Activity: 1176
Merit: 1015
Short answer: Not worth it. Get a pool. I recommend Ozcoin.

Yeah thought so. :) cheers pal.
legendary
Activity: 1176
Merit: 1015
I heard that the chance to generate a block is like playing a lottery, like the odds are 1 in 8,000,000. Is this true?

Sort of. For pooled mining, 300MH/s means you're checking 300,000,000 hashes every second to find a valid share, and should get about 4 - 4.5 shares a minute. A share is anything with a difficulty >= 1. If the share's difficulty is over 4.85 million (the current difficulty), then it's a successful block.

For solo mining, we don't care about diff=1 shares. All we care about are the diff>4.85million, or the block solvers. And yes, a diff=4.85million share will pop up about once for every 4.85million diff=1 shares.

So as far as the lottery analogy is concerned, it's more like 1 in 4,850,000, but that lottery happens 4-5 times a second, not once per day like the PowerBall.

Thanks.

So it is possible to solo mine and be extremely lucky and hit a block right away, except the chance of this happening is currently 1 in 4,850,000
legendary
Activity: 952
Merit: 1000
Short answer: Not worth it. Get a pool. I recommend Ozcoin.
legendary
Activity: 952
Merit: 1000
I heard that the chance to generate a block is like playing a lottery, like the odds are 1 in 8,000,000. Is this true?

Sort of. For pooled mining, 300MH/s means you're checking 300,000,000 hashes every second to find a valid share, and should get about 4 - 4.5 shares a minute. A share is anything with a difficulty >= 1. If the share's difficulty is over 4.85 million (the current difficulty), then it's a successful block.

For solo mining, we don't care about diff=1 shares. All we care about are the diff>4.85million, or the block solvers. And yes, a diff=4.85million share will pop up about once for every 4.85million diff=1 shares.

So as far as the lottery analogy is concerned, it's more like 1 in 4,850,000, but that lottery happens 4-5 times a second, not once per day like the PowerBall.
full member
Activity: 196
Merit: 100
I think your chances at finding a block are MUCH better than winning a lottery. That being said I would think at 300 MH\s it would take you 2 years 73 days to generate a block on average.


zif
legendary
Activity: 1176
Merit: 1015
Haha, wow 3 years. Is it possible to work out the odds of solving the next block? (As in the next 10 minutes)
legendary
Activity: 3676
Merit: 1495
At 300MH/s and current difficulty of ~4.8mio you'll need an average of ~800days to generate 1 block,
difficulty will change soon to ~6.8mio, puts your 300MH/s to an average of ~1000days per block.

You might get lucky and solve a block in 1year, or never, which is more likely.
legendary
Activity: 1176
Merit: 1015
Right now, If I were to solo mine Bitcoin with a low hash rate (300mh/s) what are my chances of generating a block?

I heard that the chance to generate a block is like playing a lottery, like the odds are 1 in 8,000,000. Is this true?
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