In the field of digital currency, the recent explosion of six blocks of F2Pool has attracted widespread attention. It is reported that these blocks involve omitted OFAC sanctions transactions, which has caused a great shock to the Bitcoin community. This incident has caused people to question and worry about the decentralization of Bitcoin. Let's delve into the details behind this incident to reveal the inside story.

 F2Pool's six block explosion incident

As a well-known mining pool, F2Pool plays an important role in the Bitcoin network. However, it has been reported recently that F2Pool exploded six blocks, and what is more worrying is that there are omitted OFAC sanctions transactions in these blocks. OFAC (Office of Foreign Assets Control) is an agency under the U.S. Treasury Department that is responsible for enforcing and supervising economic and trade sanctions against foreign entities. F2Pool's behavior has caused heated discussions inside and outside the industry, and people have begun to question its screening mechanism and compliance management of transactions.

 The omission of OFAC sanctions transactions

The omission of OFAC sanctions transactions is one of the focuses of this incident. In Bitcoin transactions, transactions involving sanctioned entities should be strictly screened and managed to ensure compliance and legal compliance. However, such omissions in the six blocks of the F2Pool explosion have raised questions among industry insiders about its regulatory measures. This also reminds the entire digital currency industry that compliance and risk control are particularly important when facing a complex international legal and political environment.

 Catalyst for doubts about Bitcoin decentralization

This incident also raised doubts about the decentralization of Bitcoin. As a decentralized digital currency, one of the core concepts of Bitcoin is decentralization, that is, there is no centralized management agency or single entity controlling the entire network. However, when mining pools like F2Pool have compliance issues, people begin to worry about the impact of these centralized entities on the Bitcoin network. This also prompted people to re-examine the decentralized nature of Bitcoin and how to better ensure the security and stability of the entire network.

 Enlightenment to the digital currency industry

The F2Pool explosion sounded the alarm for the digital currency industry, reminding us that while pursuing profits, we must not ignore compliance and risk management. The development of digital currency is inseparable from respect and compliance with laws and regulations. Only by establishing a sound compliance system can we win the trust of regulators and investors. This incident also calls on the entire industry to work together to strengthen self-discipline and supervision and jointly promote the healthy development of digital currency.

 Conclusion

The six-block event of F2Pool explosion not only reveals the compliance issues in digital currency transactions, but also triggers people's thinking about the decentralization of Bitcoin. As the digital currency industry continues to grow and develop, we need to remain vigilant and continuously improve the regulatory mechanism to ensure the sustainable development of the industry. I hope that through the reflection and summary of this incident, we can point out the direction for the future development of the digital currency industry and let it move towards a healthier and more sustainable track.

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Coin Circle (120bTC.coM): Bitcoin developer @0xB10C posted on November 21 that according to its Bitcoin mining pool transaction review monitoring service miningpool-
observer monitoring, the world's largest mining pool F2Pool is likely to have deliberately filtered out four transactions involving OFAC (U.S. Treasury Department's Office of Foreign Assets Control) sanctioned addresses in the past few weeks.

Six blocks involving OFAC sanctioned transactions were omitted

According to the monitoring report of the miningpool-
observer project, six blocks were found to have filtered out transactions from OFAC sanctions, of which ViaBTC and FoundryUSA each mined one, while F2Pool mined the remaining four. Specifically, each block did not process a transaction from an OFAC sanctioned address, but analysis pointed out that the omitted transactions of ViaBTC and FoundryUSA mining pools were not intentional screening.

However, the four transactions missed by F2Pool were not like this. The analysis pointed out that F2Pool seemed to have deliberately screened the transactions. In these transactions, the transactions were also transferred from the same OFAC sanctioned address to another address. The block heights were 810727, 811791, 811920, and 813357. As the main mining pool in Asia, why F2Pool screened based on the US OFAC sanctions standards has caused doubts in the cryptocurrency market about whether the Bitcoin network is truly decentralized.

Miners can switch jobs due to mining pool policies

Developers pointed out that there are usually many possible reasons for whether Bitcoin transactions are included in the block. On the one hand, the uneven speed of transaction propagation in the network may cause this situation. Each node has its own valid transaction set, and the mining pool prioritizes transactions according to different standards, such as the priority payment fee received. These factors may affect whether a transaction is mined by the mining pool.

Despite these concerns, the report said, the Bitcoin network as a whole is still operating normally, and the filtering behavior of a single mining pool does not affect the anti-censorship ability of the entire Bitcoin network. However, continuous monitoring of the transaction selection behavior of mining pools can help identify other mining pools that may filter transactions based on factors such as OFAC sanctions.

It is worth mentioning that miners can actually make choices based on the policies of the mining pool and make decisions on whether to switch to other mining pools. If they disagree with the censorship policy of a mining pool, they can actually choose to transfer computing power to other mining pools, which is similar to the original concept of Satoshi Nakamoto using computers to vote.