Flipping technology
https://youtu.be/WeBS-dNo0Bk
Keep calm and carry on hodling
Topic: Blockchain split of 4 July 2015 - page 21. (Read 45635 times)
wasn't the problem fixed shortly ?
those pools went back to valid chain so what are we worrying about ?
those pools went back to valid chain so what are we worrying about ?
so two chinese pools went unintentionally rogue and forked bitcoin. however, they made a rollback and fixed the problem, does that summarize the issue?
I'm using multibit, so I assume I should also wait approx. 30 confirmations just to be safe, right?
(waiting for updates here on how long this "glitch" will last)
(waiting for updates here on how long this "glitch" will last)
This is actually a good thing. I bet people who were resistant on upgrading were terrified that they would lose their bitcoins. I'm sure a large percentage of them have upgraded now.
Google Translated to English
Quote
July 4 bitcoin block chain bifurcation Comments
I think Bitcoin 2015-07-04 16:09 Posted in Bitcoin 1 139
Today Bitcoin block start diverging from 363,731 Beijing time, to 363,737 returned to normal, the bifurcation five blocks, which lasted one hour or so, most people do not know, and thus did not cause a big impact. Bifurcation 1 block is a normal thing, on a daily basis. But bifurcation five blocks on is not normal, it is necessary to analyze them, in order to avoid this from happening again.
1, mainly due to: block version upgrade from 2 to 3
Today happens to be the block version upgrade from 2 to 3 times, but this time is not scheduled in advance, but is automatically controlled by the program. Upgrade Rules: recent 1000 version blocks 950 blocks of 3, then refused to release the blocks 2 to 3 whole blocks chain upgrading.
Version 2 and version 3 of the difference between: BIP66, namely defining signature DER encoded, no longer accept derive DER encoded, DER accept only standard coding; BIP66 into force method: a recent version 750 block of 3 1 000 blocks, the rules are in effect;
Thus, the upgrade is upgraded in three stages:
(1) When the [0-75%) of the blocks with a version 3, the beginning is compatible with all DER encoding formats, as well as version 2 and 3;
(2) When the> = 75% of the blocks with a version 3, then began to enable BIP66, but is also compatible with version 2;
(3) When the> = 95% of the blocks with a version 3, version 2 is no longer compatible, allowing only 3 version exists.
BTC Nuggets have not been upgraded bitcoind, July 1 and 2, it dug two blocks, then it should not reach the 95% ratio.
9:56 GMT today BTC Nuggets out of the block a version 2 363 726, causing bifurcation, but is bifurcated handling mechanism program resolved.
10:09 BTC Nuggets then a block of 363 731 version 2, which is a fish pond and failed to properly handle ant pool, causing split ends.
2, after the mining bifurcation
After bifurcation within one hour, followed by a fish pond and ants pool of V2 block BTC Nuggets continue dug five blocks, Slush, BitFury and another unknown mineral pool in the main chain dug up four blocks, No other mineral pools dug blocks. Seeing a growing bifurcation, pond and pool ant to BitFury this chain dig, dig the branched five blocks aside, ants dig two pools and BitFury, currency dig a network so that the network is restored normal.
Ponds and pools where ants at BTC Nuggets version 2 block mining, this is confusing. I consulted the fish god, God said that the ants fish tank to the distribution network central node (Note: 5 large ore mine pool after pool conference jointly established a block distribution network designed to block rapid access to the latest, in order to accelerate the mining machine Task Update, improve mining efficiency) Error submitted BTC Nuggets of 363,731 blocks, pond and pool without ant blocks verification in the 363,731 block dug five blocks in a row.
Then I contacted pool 潘志彪 ant, ant pool Panzhi Biao confirmed errors are caused, ants have a node to report the BTC Nuggets version 2 blocks, so that the pond and pool ants are in the wrong block mining.
In short ponds and pools ant task generation process is not to verify the legitimacy of the blocks, resulting in this big fork. Bitcoin bifurcation mechanism can not handle, can only be resolved through a fallback, pond and pool ant rapid rollback, go to the main chain of mining, solved a big problem bifurcation.
3. Summary
Suggestions: (1) bifurcation is not terrible, the most important fast processing (2) Block distribution network is a good thing, but the code to scrutiny (3) the mine pool to make money at the same time, we want more for bitcoin block chain security reasons, do long-term business.
I think Bitcoin 2015-07-04 16:09 Posted in Bitcoin 1 139
Today Bitcoin block start diverging from 363,731 Beijing time, to 363,737 returned to normal, the bifurcation five blocks, which lasted one hour or so, most people do not know, and thus did not cause a big impact. Bifurcation 1 block is a normal thing, on a daily basis. But bifurcation five blocks on is not normal, it is necessary to analyze them, in order to avoid this from happening again.
1, mainly due to: block version upgrade from 2 to 3
Today happens to be the block version upgrade from 2 to 3 times, but this time is not scheduled in advance, but is automatically controlled by the program. Upgrade Rules: recent 1000 version blocks 950 blocks of 3, then refused to release the blocks 2 to 3 whole blocks chain upgrading.
Version 2 and version 3 of the difference between: BIP66, namely defining signature DER encoded, no longer accept derive DER encoded, DER accept only standard coding; BIP66 into force method: a recent version 750 block of 3 1 000 blocks, the rules are in effect;
Thus, the upgrade is upgraded in three stages:
(1) When the [0-75%) of the blocks with a version 3, the beginning is compatible with all DER encoding formats, as well as version 2 and 3;
(2) When the> = 75% of the blocks with a version 3, then began to enable BIP66, but is also compatible with version 2;
(3) When the> = 95% of the blocks with a version 3, version 2 is no longer compatible, allowing only 3 version exists.
BTC Nuggets have not been upgraded bitcoind, July 1 and 2, it dug two blocks, then it should not reach the 95% ratio.
9:56 GMT today BTC Nuggets out of the block a version 2 363 726, causing bifurcation, but is bifurcated handling mechanism program resolved.
10:09 BTC Nuggets then a block of 363 731 version 2, which is a fish pond and failed to properly handle ant pool, causing split ends.
2, after the mining bifurcation
After bifurcation within one hour, followed by a fish pond and ants pool of V2 block BTC Nuggets continue dug five blocks, Slush, BitFury and another unknown mineral pool in the main chain dug up four blocks, No other mineral pools dug blocks. Seeing a growing bifurcation, pond and pool ant to BitFury this chain dig, dig the branched five blocks aside, ants dig two pools and BitFury, currency dig a network so that the network is restored normal.
Ponds and pools where ants at BTC Nuggets version 2 block mining, this is confusing. I consulted the fish god, God said that the ants fish tank to the distribution network central node (Note: 5 large ore mine pool after pool conference jointly established a block distribution network designed to block rapid access to the latest, in order to accelerate the mining machine Task Update, improve mining efficiency) Error submitted BTC Nuggets of 363,731 blocks, pond and pool without ant blocks verification in the 363,731 block dug five blocks in a row.
Then I contacted pool 潘志彪 ant, ant pool Panzhi Biao confirmed errors are caused, ants have a node to report the BTC Nuggets version 2 blocks, so that the pond and pool ants are in the wrong block mining.
In short ponds and pools ant task generation process is not to verify the legitimacy of the blocks, resulting in this big fork. Bitcoin bifurcation mechanism can not handle, can only be resolved through a fallback, pond and pool ant rapid rollback, go to the main chain of mining, solved a big problem bifurcation.
3. Summary
Suggestions: (1) bifurcation is not terrible, the most important fast processing (2) Block distribution network is a good thing, but the code to scrutiny (3) the mine pool to make money at the same time, we want more for bitcoin block chain security reasons, do long-term business.
Did anybody else notice that (at the time of writing this) the 3 biggest pools have exactly 51% of the total hashrate between them?
I do not think it is relevant. Just an observation.
I do not think it is relevant. Just an observation.
How about you copy the text here or at least the important part of it. I can rarely access that website from my location.
So, we have to wait 30 confirmations to make sure that it's a real transaction? 
Just make sure you're using version 0.10.x. Although you should wait a day or two just to be sure. 
So, we have to wait 30 confirmations to make sure that it's a real transaction?
Update your wallets to Bitcoin Core 0.10.x or 0.9.5 and import your private keys there.
This is quite unfortunate. We've just started seeing a small positive trend and now this happens. However, it seems that there has been no effect on the price yet. The majority probably don't even know.
My question is, if this has been resolved (or at least partially)? At whom should we point our fingers of shame?
My question is, if this has been resolved (or at least partially)? At whom should we point our fingers of shame?
Well this is a big deal, and the timing for this is strange. We have this whole Core vs XT discussion going on and the miners from China just flexed their muscles.
I see this as a small test run for things to come in the future, and we should take this as a serious threat.
Where are all the counter measures, everyone was talking about, when Ghash pushed for the 51% attack? The alert should have gone out, before this happened.
Just more ammunition for the damn shills.
I see this as a small test run for things to come in the future, and we should take this as a serious threat.
Where are all the counter measures, everyone was talking about, when Ghash pushed for the 51% attack? The alert should have gone out, before this happened.
Just more ammunition for the damn shills.
Then is there any solution to understand if the btc sent to me are safe?
To know for sure, you'd have to run Bitcoin Core... As a rough approximation, you can compare the results of several block explorer sites. insight.bitpay.com and chain.com are apparently on the correct chain in this case.
Thank you.
that is worrying situation if somebody received coins and sent them to other address after 1 confirmation than what will happen to that transaction if that is from wrong side of block, mostly i use blockchain's online wallet for instant transaction should i have to wait for 30 confirmations for this wallet too?
Then is there any solution to understand if the btc sent to me are safe?
To know for sure, you'd have to run Bitcoin Core... As a rough approximation, you can compare the results of several block explorer sites. insight.bitpay.com and chain.com are apparently on the correct chain in this case.
Somebody correct me, if I am wrong, but you just have to look on blockchain.info, if your transaction is confirmed.
blockchain.info has a history of being grossly inaccurate, including in this case.
Then is there any solution to understand if the btc sent to me are safe?
Somebody correct me, if I am wrong, but you just have to look on blockchain.info, if your transaction is confirmed.
blockchain.info has a history of being grossly inaccurate, including in this case.
I use a coinbase wallet. is this wallet affected by this problem? Thanks.
you can try to send one transaction with a very small amount, to see if it is affected, but if they have the last version it should be not
Thank you!
And if I will receive btc it is the same problem? Depends everything from the version of they who send btc? If they have not the last version what happen? I must wait to have 30 confirmations? And if these 30 confirmations don't arrive what happen to btc sent?
To many questions but I wait btc from a cloud mining site and must know how to act.
Thanks.
Nobody can steal your Bitcoin, somebody could just try to trick you into thinking, he sent you Bitcoin. So, as long, as you are not planing to sell something for BTC, there isn't any problem for you.
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