The blockchain is a publicly visible general ledger that records all changes in the cryptocurrency, and the largest bitcoin block in history has appeared on the blockchain. It is 999kb in size and full of transaction data. When it came out, a user in the chat room of the Bitcoin developer called it "RIP Bitcoin".
We know who cast this block: the fish pond. This is one of China's major mining pools, which are formed by some miners who combine their mining resources into a mine to better identify the blocks. We also know why anyone is doing this. This is because some people, perhaps a group of people, have sent a large number of tiny bitcoin transactions on the Internet. People refer to this kind of transaction as “dust tradingâ€, which is similar to an attack method to achieve blocking. The trading pipeline even destroys the role of the Bitcoin system. At least, it temporarily plays such a role.
What we don't know is who initiated these junk transactions and why they did it. The attack is still in progress, and there are currently tens of thousands of transactions waiting to be packaged into the blockchain, and miners are also struggling to cope with spam attacks.
Could someone try to reduce or even destroy the power of the Chinese mining pool? Maybe the Bitcoin community simply wants to test the system? Could it be that a fierce bitcoin developer wants to prove anything? Here is the best conspiracy theory behind the scenes of this matter.
Fierce developerIn the past few months, the Bitcoin community has been involved in a debate about whether a code change should be implemented to increase the size of the block to allow Bitcoin to adapt to the increase in acceptance worldwide. The increase in the volume of transactions coming. The downside is that in the process it will lead to inevitable blockchain forks, as this requires everyone to migrate to the new version of the ledger.
The supporters of this debate, led by developer Gavin Anderson, believe that linear systems are clearly unable to cope with the massive flows and transactions, as evidenced by the dust trades that are now taking place.
But not everyone sees it this way. Some developers and powerful Chinese mining pools – China’s mining pools have more than half of the total network computing power – have expressed dissatisfaction with Gavin Anderson’s plan because This may bring inevitable confusion to the current bitcoin system.
To test Anderson's claims, Bitcoin Coinwallet.eu has conducted two separate "stress tests" -- essentially what is happening now, but smaller in size -- to test whether the system can handle these activities. In both stress tests, the Bitcoin system performed poorly.
At the beginning of this more serious junk trade attack, some Red Di net users said that the stalker behind them might be a Bitcoin developer supporting Anderson. The attack was to prove their point: we need a bigger area. Piece.
Many junk trades are sent to known addresses and easily broken down phrases, which makes it hard to clean up these transactions. This may just mean that the people behind the attack are not like destroying bitcoin, which is to alert them. No matter who is behind the attack, he does not want to see Bitcoin destruction, just to remind the weaknesses of the existing Bitcoin system.
Someone tried to hit the Chinese mining poolThe mighty Chinese mining pool stood on the opposite side of the proposal to change bitcoin. Their main reason is that they have limited bandwidth compared to their small partners in the United States, and if they implement larger blocks, they can't keep up with the rhythm.
Peter Todd, a bitcoin core developer, said: "Many people are very angry about the Chinese mining pool, especially the fish pond. There are many reasons, like Chinese miners jumping out against the Gavin Anderson increase area. Block size proposal. Attacking Chinese mines can reduce the importance of Chinese miners' opinions, so the opinions of Chinese miners are less important."
Mike Hearn, another outstanding bitcoin developer, has pointed out that if Chinese miners refuse to change and continue to extend the old blockchain, they may upgrade through code, which may completely kick Chinese miners. Out of the network. Todd's view is that through the rubbish trading attack, it can attack the image of the fish pond in the eyes of the public. Such a method of weakening the Chinese mining pool is more easily accepted by the public.
Todd said: "And the fish pond, if the attacker knows they will do the dust trading as they do now, the attacker may say, why do I do this useless work? So when you clean up a lot of dust trading People will complain about the fish pond because the transaction blockage is rare and newsworthy."
However, this conspiracy theory against Chinese mining pools is very unlikely. Because in the position of the attacker, it is necessary to predict that it is a fish pond, not other Chinese mining pools, or even a mining pool in North America or Europe, to choose to carry out dust cleaning transactions. If the willingness to act is to fight the fish pond, the final effect is not apparent, because people soon discovered that the miners only cleaned the dust and did not attack the bitcoin network.
Community maintenanceThis interpretation seems to be the most likely. Since it seems that the attack is designed to be easy to solve, since this is not self-directed by the Chinese mining pool, this garbage trading attack can only be interpreted as another "stress test."
Nicholas Vivo, a computer security researcher at the University of California at Berkeley, said in an email to me: "In order to strengthen the need to increase the size of the block, a 'bitcoin stress test' campaign has recently taken place, blocking the network by using junk trades. Trying to convince people that Bitcoin should increase the block size to handle more transactions per second."
In Vivo's view, a bitcoin address used in this stress test is an address used in the stress test initiated by Coinwallet.eu. This is a very crucial piece of evidence. Although Coinwallet.eu had previously publicly stated the stress test, this time it did not.
In the first test, Coinwallet. used 20 bitcoins, worth about $5,000, for attacks on junk trade. However, Vivo said that this attack was much cheaper than the first.
Vivo said: "This attack, the attacker used 3 bitcoins, about 800 dollars, but this attack may be less expensive, when the attack is completed, the transaction fee may return to the attacker's wallet. â€
If Coinwallet.eu is the behind-the-scenes ambassador of the attack, this phenomenon is either because he is smart, he realizes that he does not need to spend $5,000 to pick up bitcoin, or that the specific implementer's budget is more strained. We don't know the truth, but the truth may be worse. Since most of the behaviors happening on the Bitcoin network are hidden and encrypted, it is impossible to verify the attribution of the bitcoin network in this large amount of garbage transactions. At least it is very difficult despite the Vivo. And Todd gave his own guess about who is the attacker. Another object I contacted, Hearn, when I asked him if he couldn’t find out who was manipulating the attack, he answered me and said no. The way - the truth is that we can hardly confirm any guess. Even if it is a fish pond, you can completely get rid of the suspicion, although both Vivo and Todd said that it is very unlikely that the fish pond will be involved in the attack.
However, the most important thing to note is that the attack may worsen. According to Vivo, attackers can easily and slightly increase the transaction fee for their junk trades, so that these junk trades can get the priority of the miners' packaging, and then the real trade will be stuck in the waiting for confirmation. This will reduce the efficiency of the network.
Finally, it seems that Bitcoin will survive this attack safely. Perhaps, after the attack is over, the people behind the scenes will reveal their identity, and everything will become clear at that time. Who knows, maybe this person is Nakamoto Sakamoto himself.
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