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Topic: new feature - bitcoin v.9 (Read 4526 times)

newbie
Activity: 28
Merit: 0
July 10, 2013, 11:24:37 AM
#63
I love this feature!
newbie
Activity: 22
Merit: 0
July 10, 2013, 10:52:32 AM
#62
I like this feauture, thanks
newbie
Activity: 28
Merit: 0
July 10, 2013, 10:41:51 AM
#61
Figure out a way for late adopters to not have to download +8gb of data when they first start Bitcoin-qt.


Use a web wallet. Problem solved.

Yes, there are tradeoffs, but everything in life is about tradeoffs.

TradeFortress is it true your Satoshi?
legendary
Activity: 905
Merit: 1000
July 10, 2013, 10:37:07 AM
#60
They're built using it, not inspired by it. bitcoinj is the module that handles all the communication with the Bitcoin network. The apps add a GUI on top.

Thank you.  I will fix it.  I was trying really hard to give everyone credit, and I still dicked it up.

legendary
Activity: 1526
Merit: 1134
July 10, 2013, 10:30:38 AM
#59
They're built using it, not inspired by it. bitcoinj is the module that handles all the communication with the Bitcoin network. The apps add a GUI on top.
legendary
Activity: 905
Merit: 1000
July 10, 2013, 10:04:25 AM
#58
I am using Bitcoin Wallet by Schildbach on my Android tablet.  It is fast and cool, although I still don't know how it works.


Now I know how it works:
https://bitcointalksearch.org/topic/m.2690447

And Schildbach is:
http://schildbach.de/

MultiBit by Jim Burton (lead developer) with Gary Rowe and Tim Molter (contributors), and Android "Bitcoin Wallet" by Andreas Schildbach, with both projects incorporating the innovative code from bitcoinj by Mike Hearn https://code.google.com/p/bitcoinj/
yvv
legendary
Activity: 1344
Merit: 1000
.
July 09, 2013, 05:17:26 PM
#57
When measuring exponential growth, average block size is more useful than total block size. Since 2011, average block size is doubling only once per year.

Its a pity that my disk does not know anything about average block size.

Sorry if I did not make my point clear. I'll elaborate.

We are talking about the sum of a geometric series. However, this sum is not strictly exponential. The formula is proportional to (1−qn)/(1−q), where q is the growth factor in average block size and n is the number of blocks. When n is large, the formula can then be approximated as qn−1. When n is small, however, this approximation is not successful.

Consequently, to predict future block sizes, we must take into account the fact that the future approximation does not currently hold. A better prediction is to use the ratios of q itself, which is the growth factor in average block size.

Regardless the details upon which growth factor depends (you can't predict it precisely anyway), competition between blockchain size and hard drive densities is silly. Waste of resources. Bitcoin blockchain is just quick and dirty solution, and I hope, in the future, a crypto-coin will come out wich solves this problem in more elegant way.
legendary
Activity: 1470
Merit: 1006
Bringing Legendary Har® to you since 1952
July 09, 2013, 04:22:15 PM
#56
http://thegenesisblock.com/significant-merchant-improvements-planned-for-bitcoin-v0-9/

seems like innovation is continuing. what do people think? what should be added to v1?

Coin control.
Confirmed. Coin control.
legendary
Activity: 3038
Merit: 1032
RIP Mommy
July 09, 2013, 04:13:38 PM
#55
Doesn't MultiBit still store private keys unencrypted by default, and require major gymnastics every session to encrypt then delete unencrypted version?

"all private keys are kept encrypted on your local machine (or on a USB stick)"
http://www.multibit.org/features.html

Ah, just downloaded and poked the .wallet files in ~User\Library\Application Support\Multibit with the TextEdit stick. They aren't in clear text anymore. Cool.
legendary
Activity: 1246
Merit: 1077
July 09, 2013, 03:41:30 PM
#54
When measuring exponential growth, average block size is more useful than total block size. Since 2011, average block size is doubling only once per year.

Its a pity that my disk does not know anything about average block size.

Sorry if I did not make my point clear. I'll elaborate.

We are talking about the sum of a geometric series. However, this sum is not strictly exponential. The formula is proportional to (1−qn)/(1−q), where q is the growth factor in average block size and n is the number of blocks. When n is large, the formula can then be approximated as qn−1. When n is small, however, this approximation is not successful.

Consequently, to predict future block sizes, we must take into account the fact that the future approximation does not currently hold. A better prediction is to use the ratios of q itself, which is the growth factor in average block size.
yvv
legendary
Activity: 1344
Merit: 1000
.
July 09, 2013, 03:30:06 PM
#53
When measuring exponential growth, average block size is more useful than total block size. Since 2011, average block size is doubling only once per year.

Its a pity that my disk does not know anything about average block size.
legendary
Activity: 1246
Merit: 1077
July 09, 2013, 03:23:55 PM
#52

If blockchain size doubles every half year, and hard drive density doubles every year, I wonder, who will finally win?..


When measuring exponential growth, average block size is more useful than total block size. Since 2011, average block size is doubling only once per year.
yvv
legendary
Activity: 1344
Merit: 1000
.
July 09, 2013, 03:09:11 PM
#51

If blockchain size doubles every half year, and hard drive density doubles every year, I wonder, who will finally win?..
legendary
Activity: 1246
Merit: 1077
July 09, 2013, 02:46:14 PM
#50
10 GB block chain size is an issue.  We are only 4 years into the use of bitcoin with relatively low amount of transactions.  Fast forward 10-15 years once bitcoin is main stream, and block size definitely could become a major issue.  It would be nice if a "new" genesis block could be created every 5 years or so.  All the past transactions could be rolled up into an offline archive.  The block chain size also becomes an issue for mobile (phones) devices.  Nobody wants to download a 25-50 GB file before they can use their phone wallet.

Take into account that blockchain size doubled since early this year. If it continues to grow at same rate, in early 2017 it will exceed 1TB, in the middle of 2018 10TB, by the middle of 2020 100TB, etc.

No, this is not an issue at all  Grin

I wonder what else doubles every year...
legendary
Activity: 905
Merit: 1000
July 09, 2013, 01:53:17 PM
#49
Doesn't MultiBit still store private keys unencrypted by default, and require major gymnastics every session to encrypt then delete unencrypted version?

"all private keys are kept encrypted on your local machine (or on a USB stick)"
http://www.multibit.org/features.html

"Faster to synchronize - usually a minute or so"

But how does it work?  described here:  https://bitcointalksearch.org/topic/block-chain-sizestorage-and-slow-downloads-for-new-users-252937
legendary
Activity: 1526
Merit: 1134
July 09, 2013, 09:38:52 AM
#48
We've changed the default client recommendation on bitcoin.org to be MultiBit, so new users should be downloading that instead. MultiBit syncs the block chain in a few seconds for new users, because it's an SPV client. The security model is stronger than a web wallet and not quite as strong as Bitcoin-Qt, it's somewhere in the middle.

Basically - as long as the majority of mining power is honest, MultiBit is secure. Caveat: unconfirmed transactions when you have a malicious internet connection, then, you may see bogus unconfirmed transactions that are garbage and will never confirm.
kjj
legendary
Activity: 1302
Merit: 1026
July 09, 2013, 07:39:15 AM
#47
Use a web wallet. Problem solved.
Not for web wallet. With exponentially growing blockchain size, it will become a problem for them very soon.
Of course not: a web wallet would host only a *single* copy of the blockchain for all its users, not one for each of them.


Of course yes. They will need to double their storage every several month. Do not think that it will be for free.

I have visions of sysadmins frantically purchasing new drive after new drive to add to their servers, all sitting empty.

Hint: with the current block size limit, a 1 TB drive will die of old age long before it fills up in 2032 (at the soonest).
yvv
legendary
Activity: 1344
Merit: 1000
.
July 09, 2013, 07:15:57 AM
#46
Use a web wallet. Problem solved.
Not for web wallet. With exponentially growing blockchain size, it will become a problem for them very soon.
Of course not: a web wallet would host only a *single* copy of the blockchain for all its users, not one for each of them.


Of course yes. They will need to double their storage every several month. Do not think that it will be for free.
hero member
Activity: 630
Merit: 500
Bitgoblin
July 09, 2013, 05:36:33 AM
#45
Use a web wallet. Problem solved.
Not for web wallet. With exponentially growing blockchain size, it will become a problem for them very soon.
Of course not: a web wallet would host only a *single* copy of the blockchain for all its users, not one for each of them.
newbie
Activity: 9
Merit: 0
July 08, 2013, 05:47:07 PM
#44
Dont you guys agree with that?
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