差点让比特币系统崩塌的600微秒

The fourth halving of Bitcoin has been completed. This decentralized system has been running successfully for years. However, the vulnerability of Bitcoin core client revealed in 2000 directly threatens the stability of Bitcoin system, which is one of the biggest vulnerabilities of Bitcoin. Today, I will introduce to you the vulnerability of double flowers in the client. What is Bitcoin core? Bitcoin core is initiated by Satoshi Nakamoto, which is considered to be the orthodox Bitcoin client and is currently the most used. This software can verify all transactions that have been done by blockchain. What is the money that can be transferred? There is an extremely serious loophole in the released version, which will lead to the program crash and double-flower problem, that is to say, the input contained in the transaction can be output many times, which will cause unlimited additional issuance and destroy the consensus that the total number of Bitcoin is 10,000 pieces, which will cause inflation and then be listed as why this loophole exists. This goes back to 2000. Yes, although the loophole was discovered in 2000, it has already laid the groundwork in 2000. In 2000, a developer proposed a merger to delete it. Repeated input check in the transaction check will save about microseconds, and then the auditor passed the merger. At this time, the bomb has been buried in the version, and this vulnerability is officially launched in the client code. At this time, if this vulnerability is fully utilized, it will cause the client receiving the broadcast to crash, and it will not affect the data on the chain. Other clients can discard the broadcast of the attacking node, and to trigger this attack, the attacker needs to dig a block. This cost is very high and can only make some customers. The end crash did not bring benefits to the attacker until the developer optimized the structure of the database in the version released in October, and accidentally allowed the client to continue to operate under repeated input, which opened up the possibility of double flowers for this vulnerability. How was the vulnerability discovered? No one discovered this vulnerability until the year, month and year after the release of the version, until the developer found this comment in the code base sitting in the van by the sea at noon, and felt that it was not important to test the usage mode. The result of re-input directly reminds him that this may be exploited, which will lead to the danger of inflation and splitting the chain. After writing, he immediately reported this loophole and repair patch to the development team. He wrote in the review that he was relieved after submitting it. He found a loophole worth millions of dollars, which could have a huge impact on the currency worth hundreds of millions of dollars. In fact, he can rent computing power to short, which can make him directly rich, but He didn't choose to report the vulnerability, released a patch on the same day, fixed the vulnerability, and sent this message to the majority of nodes to urge them to upgrade. After most nodes completed the upgrade, this vulnerability was completely disclosed. However, the impact was not only on Bitcoin but also on all kinds of counterfeit coins with Bitcoin core. Because this vulnerability was the merger of Bitcoin core teams, everyone accused the Bitcoin core team of being latent in the chain because of microsecond changes. After years of waiting, if this loophole is exploited, it may lead to a hard fork. Can the price of Bitcoin still have the current price? Will another one be born just like the hard fork of Ethereum? 比特币今日价格行情网_okx交易所app_永续合约_比特币怎么买卖交易_虚拟币交易所平台

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