The research suggests that the Unlimited Bitcoin proposal has a design flaw in scalability.

The research suggests that the Unlimited Bitcoin proposal has a design flaw in scalability.

The Unlimited Bitcoin, launched in 2016 with the efforts of several developers and developer-developers, was an alternative idea to change the volume of blocks of Bitcoin, which was the center of scalability debate, with a new conceptual approach called a broad agreement.

A new research paper from an IMEC survey shows that the change to Unlimited's proposed Bitcoin, which is implemented with software, can increase the impact of attacks on the network.

The idea was that, instead of having rules such as block volume directly identified in the original code, nodes (nodes) and extractors would also naturally be used to get this connection using free market principles. .

IMEC research findings, however, have shown that extractors with economical resources can both stimulate and exclude smaller miners. The researchers used two models as a representative for choosing a social network, which required the right to choose the hypothesis of how to operate in both secure and challenging conditions. Specifically, this report shows that when extractors and nodes (both nodes) use both the "maximum acceptable block size" and "over-block size" signals as a means of defining the rules, a path The new invasion opens and basically empowers the exploiters if they wish to allow for intentional splitting in the network.

The authors of the report said: "Our results prove that if there is flexibility in the size of the attackers, it is often created in the branch network. "

The research eventually revealed that the nature of the Bitcoin mining business, which most often compete with each other for rewarding, uses the processing power of extraction pools, which means that more powerful extractors capable of processing block sizes with volume They are bigger, they can take their competitors out of the field.

"With changes that have taken place over time, people may declare blocks of different sizes (blocks that are in excessive amounts) to show their support for the block they want, and threaten other exploiters. , Which puts the system in a vulnerable state. Additionally, if the volume of the blocks increases continuously in the system, some other nodes can not continue to service this volume, and this will damage the nature of the decentralized bitcoin. "The article reads:

"In other words, in Unlimited Bitcoin, the nature of the profitability of extractors is inconsistent with the bitcoin decentralization philosophy."

Even in separate experiments, assuming that the extractioners were in exact agreement with the rules, the research showed that extractors with a certain strategy can receive a bonus from the block without reliance on their production power, and the long split mode compared to the limitations The current software is much easier to replay.

Finally, the study states that the security implications of such a change have not been thoroughly investigated.

Unanswered questions

This article, written by researcher Ren Zhang and Bart Preneel, provides a new ground for this technical and scientific debate, often expressed in a tidy manner. Although apparently this article is also influenced by the policies of this problem (Bitcoin scaling).

A possible critique of this article is that the smaller active nodes are considered to be the most decentralized segment of the network, which plays a valuable role in the current protocol. This is a significant advocate for larger blocks that attempt to reduce the cost of nodes high. . This issue should be addressed to fans of larger blocks that are working to reduce the cost of nodes.

In fact, the two ideological approaches can be rooted in their view of extractors and nodes (nodes), which developers do not see as a danger to bitcoin value, while this starter The apos have accepted this category as a side effect of economics and commerce.

Due to the fact that the network is close to activating another offer called Segwit2x, it still remains to see the effects of these events. The proposal, which is being developed by the current developer team of the Bitcoin open source network, will be approved with a code change.

According to an online resource, at the time of writing this, only 10. 75 percent of the ninety (nodes) are signaling to the Unlimited Bitcoin.

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