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441  Bitcoin / Bitcoin Discussion / Re: pet peeve: when people send bitcoins with NO TX FEE on: May 24, 2014, 10:05:48 PM
I am a P2Pool node. If I was operating a large mining pool, I would have my node in a data-center (with faster Internets+CPU).
442  Bitcoin / Development & Technical Discussion / Re: should i add a tx fee to a coldwallet? on: May 24, 2014, 10:00:28 PM
The OP was also asking about storing 1BTC. Fees are not needed to move it again after waiting 1 day.
443  Bitcoin / Development & Technical Discussion / Re: should i add a tx fee to a coldwallet? on: May 24, 2014, 09:46:16 PM
You don't know when you need the funds. You might suddenly need them tomorrow.

That may be enough time to make the transaction high priority, depending on the amount.

Quote from: Transaction fees: Technical info
Transaction priority is calculated as a value-weighted sum of input age, divided by transaction size in bytes:
Code:
priority = sum(input_value_in_base_units * input_age)/size_in_bytes
Transactions need to have a priority above 57,600,000 to avoid the enforced limit (as of client version 0.3.21). This threshold is written in the code as COIN * 144 / 250, suggesting that the threshold represents a one day old, 1 btc coin (144 is the expected number of blocks per day) and a transaction size of 250 bytes.
- Bitcoin Wiki: Transaction fees
444  Bitcoin / Development & Technical Discussion / Re: should i add a tx fee to a coldwallet? on: May 24, 2014, 09:36:20 PM
Cold wallets don't really need a fee. Old coins get priority when they move.
445  Bitcoin / Bitcoin Discussion / Re: pet peeve: when people send bitcoins with NO TX FEE on: May 24, 2014, 09:30:00 PM
I wish miners would just fill blocks...why the artificial scarcity for a few pennies? It'll be a while before tx fees amount to much anyhow, why screw with around with trivial fees _now_?

I currently have my miner set to 500kB blocks. I also told my miner to include up to 196kB of "high priority 0 fee transactions", which is basicly reasonable amount of Bitcoins that have not moved around in a few days.

My miner has two limitations that prevent full 1MB blocks:
  • VDSL connection; only about 5Mbps up. This means that if I send a 1MB block to more than 1 node simultaneously, it will take over a second: possibly increasing the chance of an orphan.
  • I have not upgraded the old CPU yet. Before I can start mining a new block, I have to verify the old one. This can take several seconds. On P2Pool, that means I am going to have a 10% stale rate or so (my mining blade is responsible for the bulk of my stale rate though).
446  Bitcoin / Bitcoin Discussion / Re: [POLL] End the 'bit' controversy: What to (nick)name 100 Satoshi / 1 µXBT on: May 24, 2014, 06:48:48 PM
One suggestion brought up in 2011 is "oros", derived from the Esperanto word for "golden".
447  Bitcoin / Bitcoin Discussion / Re: 1,000,000 bits = 1 bitcoin. Future-proofing Bitcoin for common usage? VOTE on: May 24, 2014, 06:01:11 PM
This is essentially a re-hash of a discussion going back to 2011.

It was decided that trying to move the decimal place (while keeping the same name) would lead to nothing but confusion.

Using "bits" is actually worse than moving the decimal place for "Bitcoin" because it apparently now has 3 (rather than 2) common interpretations. We really need a new word.

Edit: OMG: A June 9, 2011 reference to 1µBTC being equal to 1 bit
448  Bitcoin / Bitcoin Discussion / Re: How to make a custom bitcoin adress? on: May 24, 2014, 05:31:03 PM
Vanitygen: Vanity bitcoin address generator/miner [v0.22].

Note that address re-use has severe privacy implication.

I have been using single-use vanity addresses myself.

Edit: Real life example of somebody regretting vanity addresses.
449  Bitcoin / Bitcoin Discussion / Re: How much is 1 bit? on: May 24, 2014, 04:34:44 PM
megabit and kilobit could also be confusing as they are already used for hard drive sizes and they use the 1024 base system instead of the 1000 base. Which means a megabit (hard drive size) is 1.048.576 bits

I am actually with the Hard drive manufactures on this one. Many GNU/Linux distributions have converted to Binary prefixes, though I don't think Windows or BSD have. Mac OS X has converted to decimal prefixes for disk capacity.

Also, a byte is not always 8 bits. For example, the ASCII character set is 7 bit and may be transmitted over the wire as such (if you really want to; generally 8 bit bytes are used for modem use)

Quote from: TCP/IP Guide
Some older 36-bit computers used 9-bit bytes, and there were also systems that had byte sizes of 6 or 7 bits, or even variable-sized bytes. For this reason, many people, especially techie professionals, prefer the term octet, which clearly and unambiguously implies “eight”. This term is much more common outside North America.
- Binary Information and Representation: Bits, Bytes, Nibbles, Octets and Characters
450  Bitcoin / Bitcoin Discussion / Re: [POLL] End the 'bit' controversy: What to (nick)name 100 Satoshi / 1 µXBT on: May 24, 2014, 04:16:35 PM
Perhaps a better example would be the kilo. Officially a kilo is a kilogram, but in common everyday use we call it just a kilo. But a 1000th of a kilo is not a microkilo but a gram (you drop the kilo from the kilogram and you're left with gram).

You appear to be mis-understanding the metric system (which, incidentally is what prompted that original reddit poster to propose "bit").

The way the metric system works, values are expressed in the following format:
<Conveniently sized number><Prefix (optional)><unit>

Using the same prefix or multiple prefixes is formally not allowed: since it would obviously lead to confusion. (sometimes is happens with really common prefixes though. The SI system formally defines its base-unit for mass as the kilogram)

In the kilogram example, the kilo (meaning x103) is actually the prefix. The "gram" is actually the base-unit. Thus it does not make sense to say 1/1000th of a kilo.

Common prefixes:
  • Mega M(x106)
  • kilo k(x103)
  • (none) (x100)
  • milli m(x10-3)
  • micro µ(x10-6)
Since one µg is 1,000,000,000 times smaller than 1kg, I am not sure why you would expect dividing a kilo by 1000 would give you a microkilo. Maybe  millikilo.

Incidentally, the proposed "mike" short-hand for 100 satoshies does the same thing: (mostly) keep the prefix, but drop the unit (which is implied by context).

451  Bitcoin / Bitcoin Discussion / Re: I just paid the $100K USD via BTC to become a Platinum Member of TBF. on: May 24, 2014, 07:13:21 AM
I actually put that address in a search engine and the 1Burtw... address came up... should have clued in.
452  Bitcoin / Bitcoin Discussion / Re: POLL: How die hard are you? on: May 24, 2014, 07:10:30 AM
Under a 66% attack divesting is impossible, so the first option is the only rational response.
453  Bitcoin / Bitcoin Discussion / Re: I just paid the $100K USD via BTC to become a Platinum Member of TBF. on: May 24, 2014, 06:02:10 AM
I estimate it is a 25:1 long-shot, but this transaction happened at about the right time in the right amount to be the KNC donation. Disclaimer: I only looked at about 15 blocks on April 27th.

225 BTC payment -- or is it a 25BTC payment?

The price of BTC on April 27th appears to have been between $460 and $430 USD.

There were even similarly sized payments in the same block. This one stood out due to the nice round even numbers (and limited number of inputs/outputs).
454  Bitcoin / Bitcoin Discussion / Re: Proposal to define XBT as 0.000001BTC (Vote) on: May 23, 2014, 10:11:46 PM
If logical OR is assumed, even the people opposed will vote Yes!
455  Bitcoin / Bitcoin Discussion / Re: [POLL] End the 'bit' controversy: What to (nick)name 100 Satoshi / 1 µXBT on: May 23, 2014, 08:20:39 PM
Feel free to sell your coins.

I am seriously considering selling a portion. If popularity rather than correctness is what is important, then it would be silly not to invest in the Alt with the highest transaction volume.

Dogecoin does not have this problem because the unit in common usage (1 doge) is worth such a small amount of money (ignoring financial software integration concerns -- that would be an implementation detail: a correctness thing.)
456  Bitcoin / Bitcoin Discussion / Re: [POLL] End the 'bit' controversy: What to (nick)name 100 Satoshi / 1 µXBT on: May 23, 2014, 08:08:08 PM
Also the nice thing is that since bit (general nonbitcoin word) is a discrete unit there is no such concept of sub bit.  Therefore without spelling out "coin" it becomes disambiguous that the speaker is talking about only bitcoin.

"Bits" is a good colloquial for uBTC.  The idea that people won't be able to figure it out is just silly.  "That will be 22 bits please", short, simple, easy.  It still provides two decimal places which means easy integration into legacy accounting software.

(Bold mine)

With a 180 degree turn like that, I am wondering if I should just convert all my BTC to dogecoin (it is more popular after all).
457  Bitcoin / Bitcoin Discussion / Re: Market based energy distribution system from smart property enabled solar panels on: May 23, 2014, 06:35:16 PM
It is not an all or nothing thing. Power storage can be used to even out the peaks and valleys of energy demand. If these thing are really going to eliminate coal plants as advertised, they need to store power, or power storage plants must be added to the grid.

These things are all supposed to be able to keep working with no external power. That means they have to store some energy for running the heater, mircocontroller, sensors and lights anyway. That means a battery. If the battery is to last any where near 20 years, it must not be charged faster than the 1 hour charge rate in full sun.  The numbers above suggest that the arbitrary battery I described would charge at a 2 hour rate in full sun.

So why are we storing power (and doubling or tripling the generation cost) again?

Normally power storage must double generation cost because the power storage plant essentially represents doubled-up generation capacity.

The added cost of power storage in the tiles is essentially the battery. The grid interconnection will be the same with or without the battery. The logic behind these appears to be: we have so much land paved over that small losses (less than about 50%) don't really matter. I am not convinced adding a battery will double the cost of these tiles. Of course, no pricing has been released yet either (somebody said $16/square foot; assuming each panel is 1 square foot I guess $120 raises the cost about 8x).

Edit: DeathAndTaxes found Evidence these don't have batteries Thanks for that (post was deleted for some reason).

From the same page:
Quote from: Solar Roadways FAQ
How much will your panels cost?

We are not yet able to give numbers on cost. We are still in the midst of our Phase II contract with the Federal Highway Administration and we'll be analyzing our prototype costs near the end of our contract which ends in July, 2014. Afterward, we'll be able to do a production-style cost analysis.
458  Bitcoin / Bitcoin Discussion / Re: Market based energy distribution system from smart property enabled solar panels on: May 23, 2014, 06:15:35 PM
The guy is talking about producing 3 times the energy needs of the US with these things. Simply tieing into the grid will not work at that scale. Yes power storage is expensive. The batteries described cost about $3 each ($120 for 40). (Note: not sure they would have the advertized 20 year life though)

They would probably lose about half the stored power in conversion losses. Since these things have microcontrollers, they can store energy when the grid has excess supply, then sell back to the grid during high energy demand.

People can say anything they want.  Nobody seriously thinks it would be a good idea for this to replace all other forms of power.  Even if it was economical in some scenarios it would never be economical to produce all the power of nation during the day and then need to store power on a scale many magnitudes beyond anything the human race has ever accomplished just to use that power at insane cost and complexity at night.   No a smart grid is one which has multiple sources that complement each other.

Not sure what battery you are talking about but there is no $3 battery which can store 600 Wh.

1 10amp-hour 1.2V cell can store 12Wh (I never said 600Wh). These were available grey-market from china at about $48 for 16 less than 10 years ago. The price may have risen a bit since then.  Edit: I edited my earlier post to make it more clear it is the individual cells that cost $3.

I did the math on your 185W figure (for raw solar collection) (times 4 hours) that works out to 740Wh: almost double the 480Wh figure I gave earlier. I was not assuming these devices are responsible for all energy production. They would probably compliment nuclear power nicely (which can't quickly change power output in response to conditions).
459  Bitcoin / Bitcoin Discussion / Re: Market based energy distribution system from smart property enabled solar panels on: May 23, 2014, 05:57:10 PM

If the panels are expecting 4 hours of light per day, they *have to* store energy.

No they don't, the plan is to connect them to the grid.  People have solar panels on their roof and yet their lights still work at night without any batteries (google "grid intertie").   Power storage is expensive and inefficient.  As soon as you include power storage you nearly double the cost of any system and you throw away 20% to 30% of the power generated right off the top.

The guy is talking about producing 3 times the energy needs of the US with these things. Simply tieing into the grid will not work at that scale. Yes power storage is expensive. The batteries cells described cost about $3 each ($120 for a 40 cell battery). (Note: not sure they would have the advertized 20 year life though)

They would probably lose about half the stored power in conversion losses. Since these things have microcontrollers, they can store energy when the grid has excess supply, then sell back to the grid during high energy demand.
460  Bitcoin / Bitcoin Discussion / Re: Market based energy distribution system using Bitcoin and Solar Roadways on: May 23, 2014, 05:46:05 PM

Well storing energy is a non-starter.  The losses make any project to do so unprofitable.   There is also the issue of transmission.  If your panel is at point A and someone needs power at point B how are you going to "trade" energy for bitcoins.   It involves transmission something you don't have.

If the panels are expecting 4 hours of light per day, they *have to* store energy. NiMH battery patents should be expiring in about 2 years. The heated panels should keep the batteries above 0°C, preventing ice formation on the platinum catalyst. However, I have seen nothing on the solar road website about how the electrical interconnection actually works: not even the operating voltage is disclosed. D sized batteries can store about 10 Amp-Hours. At 48V (40 cells), that would work out to 480Wh (0.48kWh) of power storage per panel.

I am also not convinced that all surfaces will lend themselves to solar tiles. Parking garages would essentially have to be built with the required structural integrity out to conventional materials, with the tiles added on top. This will increase the thickness and cost. As was pointed out, it would be much easier to put the panels on the roof (of say the nearby mall) instead.

Edit: forgot to mention, I don't see how this energy trading with Bitcoin would work either. As far as I can tell, the road owner (whoever it is) would be selling the power. Bitcoin does not even have to enter into it.
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