比特币现代革命的过去遗迹？

OP_CAT 操作码（也称为 BIP-420）是一项功能，如果重新集成到比特币中，可能会深刻改变区块链的运行方式。

An old line of code, long forgotten, could well transform the cutting-edge blockchain that is Bitcoin. This potential resurrection is sparking heated debates within the community, with everyone pondering the possible impacts of such an update.

一段早已被遗忘的旧代码很可能会改变比特币这一尖端区块链。这种潜在的复活在社区内引发了激烈的争论，每个人都在思考这种更新可能产生的影响。

The OP_CAT opcode, also known as BIP-420, is a feature that, if re-integrated into Bitcoin, could deeply change how the blockchain operates.

OP_CAT 操作码（也称为 BIP-420）是一项功能，如果重新集成到比特币中，可能会深刻改变区块链的运行方式。

This line of code is not new. In fact, it was part of the original Bitcoin protocol, but was removed by Satoshi in 2010 due to security concerns. Today, with more robust security systems, some developers believe the time has come to reintroduce this feature.

这行代码并不新鲜。事实上，它是原始比特币协议的一部分，但出于安全考虑，于 2010 年被中本聪删除。如今，随着安全系统更加强大，一些开发人员认为是时候重新引入此功能了。

The main interest of OP_CAT lies in its ability to allow “covenants,” smart contracts that can impose specific conditions before a payment is validated.

OP_CAT 的主要兴趣在于它允许“契约”的能力，即可以在验证付款之前施加特定条件的智能合约。

However, not everyone is convinced.

然而，并不是所有人都相信。

Linus, a recognized developer, criticizes this approach, stating that while technically possible, using OP_CAT to mimic these covenants would be inefficient, both in terms of fees and blockchain space.

Linus 是一位公认的开发人员，他批评了这种方法，指出虽然在技术上是可行的，但使用 OP_CAT 来模仿这些契约在费用和区块链空间方面都是低效的。

He points out that more suitable alternatives exist, notably through soft forks specifically designed for this type of transaction.

他指出，存在更合适的替代方案，特别是通过专门为此类交易设计的软分叉。

Despite these reservations, OP_CAT continues to garner interest. Some believe this feature could offer opportunities far beyond simple covenants, becoming a versatile tool for those developing on Bitcoin.

尽管存在这些保留，OP_CAT 仍然引起人们的兴趣。一些人认为，这一功能可以提供远远超出简单契约的机会，成为比特币开发人员的多功能工具。

This raises the question: Is OP_CAT a mere relic of the past or the key to major future innovation for the blockchain?

这就提出了一个问题：OP_CAT 仅仅是过去的遗迹还是区块链未来重大创新的关键？

One of the reasons OP_CAT divides the community so much is related to the issue of security.

OP_CAT 社区如此分裂的原因之一与安全问题有关。

Those opposed to its reintroduction fear it could create vulnerabilities or perverse incentives for miners, like the infamous Maximum Extractable Value (MEV).

那些反对重新引入它的人担心它可能会给矿工带来漏洞或不正当的激励，例如臭名昭​​著的最大可开采价值（MEV）。

MEV refers to the gains miners can make by reordering transactions within a block, a practice that could disrupt Bitcoin’s current balance and lead to transaction censorship.

MEV 指的是矿工通过重新排序区块内的交易可以获得的收益，这种做法可能会破坏比特币的当前平衡并导致交易审查。

Linus has expressed strong concerns about this, emphasizing that the introduction of OP_CAT could pave the way for unpredictable forms of MEV, making the Bitcoin blockchain less fair and less secure.

Linus 对此表示强烈担忧，强调 OP_CAT 的引入可能为不可预测的 MEV 形式铺平道路，使比特币区块链变得不那么公平和安全。

Others, like Bodily from Bioniq, believe these fears are overstated. According to him, OP_CAT would actually offer increased flexibility to migrate complex transactions off the main chain to layer 2 solutions, which are less costly and faster.

其他人，比如来自 Bioniq 的博迪利，则认为这些担忧被夸大了。据他介绍，OP_CAT 实际上会提供更大的灵活性，将复杂的交易从主链迁移到第 2 层解决方案，成本更低、速度更快。

However, questions remain. For example, some doubt the real utility of OP_CAT, arguing that the promises made by its proponents could be exaggerated.

然而，问题仍然存在。例如，一些人怀疑 OP_CAT 的真正实用性，认为其支持者做出的承诺可能被夸大了。

Paul Sztorc, creator of the BIP 300 “Drivechains” proposal, admits that while reintegrating OP_CAT seems safe, he would like to see concrete tests to evaluate its real benefits before adopting it definitively. In the meantime, an Ethereum is experiencing a disastrous quarter!

BIP 300“传动链”提案的创建者 Paul Sztorc 承认，虽然重新集成 OP_CAT 看起来很安全，但他希望在最终采用之前看到具体的测试来评估其真正的好处。与此同时，以太坊正在经历一个灾难性的季度！