Abstract
A new OPCODE that allows queuing some piece of code with a well defined gas used that will execute at the end of a block. If two transactions queue the same end-of-block code, it will only execute once. Gas costs are covered with ETH in the calling contract.
Motivation
This would enable things like block auctions, by allowing a bunch of people to submit transactions to swap some asset, and then they would all execute together via a block-auction at the end of the block in a way defined by the contract, rather than in a sequential order that they appear. Each transaction would queue the end-of-block code execution. If a single transaction does a swap on some pool, then the end-of-block execution would not change anything from today. If multiple people submit swaps on some pool within a single block, then the contract can execute a block-auction rather than executing the swaps in the order they are received. This allows the contract to get the best price for everyone and combat things like in-block fr

<div><h2><a href="https://ethresear.ch#abstract-1" rel="nofollow"></a>Abstract</h2><p>A new OPCODE that allows queuing some piece of code with a well defined gas used that will execute at the end of a block.  If two transactions queue the same end-of-block code, it will only execute once.  Gas costs are covered with ETH in the calling contract.</p><h2><a href="https://ethresear.ch#motivation-2" rel="nofollow"></a>Motivation</h2><p>This would enable things like block auctions, by allowing a bunch of people to submit transactions to swap some asset, and then they would all execute together via a block-auction at the end of the block in a way defined by the contract, rather than in a sequential order that they appear.  Each transaction would queue the end-of-block code execution.  If a single transaction does a swap on some pool, then the end-of-block execution would not change anything from today.  If multiple people submit swaps on some pool within a single block, then the contract can execute a block-auction rather than executing the swaps in the order they are received.  This allows the contract to get the best price for everyone and combat things like in-block front-running.  This does <em>not</em> address cross-block front-running/back-running, but that is far harder to execute than within-block front-running and sandwiching.</p><h2><a href="https://ethresear.ch#specification-3" rel="nofollow"></a>Specification</h2><p>Mostly TBD, but gas paid by the contract allows for cost sharing strategies between transactors (e.g., split costs and refund at end) and requiring a fixed gas usage for the end-of-block execution helps with solving the bin-filling problem introduced by delayed execution.</p><h2><a href="https://ethresear.ch#considerations-4" rel="nofollow"></a>Considerations</h2><p>It could be useful to allow for specifying dependencies, so one contract could say “I want my end-of-block execution to run after this other contract’s end-of-block execution”.  Care would need to be taken to avoid circular dependencies, but this could be achieved by just asserting that if a circular dependency is detected then all contracts in the circle do not get their end-of-block execution.  This strongly encourages people to <em>only</em> depend on immutable end-of-block executors with fixed dependency trees.</p></div>

Queue End Of Block Transaction OPCODE

抽象的
一種新的 OPCODE，允許使用明確定義的 gas 對一段代碼進行排隊，該代碼將在塊末尾執行。如果兩個交易對相同的塊末尾代碼進行排隊，則它將僅執行一次。gas 成本由調用合約中的ETH支付。
動機
這將實現諸如區塊拍賣之類的功能，允許一群人提交交易來交換某些資產，然後他們將按照合約定義的方式通過The Block末尾的區塊拍賣一起執行，而不是按照它們出現的順序執行。每筆交易都會將區塊末尾的代碼執行排隊。如果單筆交易在某個池上進行交換，那麼區塊末尾的執行不會改變今天的任何事情。如果多個人在單個區塊內對某個池提交交換，那麼合約可以執行區塊拍賣，而不是按照收到的順序執行交換。這使得合約可以為每個人獲得最佳價格，並對抗諸如區塊內交易之類的問題

<div><h2><a href="https://ethresear.ch#abstract-1" rel="nofollow"></a>抽象的</h2><p>一種新的 OPCODE，允許對一段代碼進行排隊，並使用明確定義的 gas，該代碼將在塊末尾執行。如果兩個交易對相同的塊末尾代碼進行排隊，則它將僅執行一次。gas 成本由調用合約中的ETH支付。</p><h2><a href="https://ethresear.ch#motivation-2" rel="nofollow"></a>動機</h2><p>這將實現諸如區塊拍賣之類的功能，允許一群人提交交易來交換某些資產，然後他們將按照合約定義的方式通過The Block末尾的區塊拍賣一起執行，而不是按照它們出現的順序執行。每筆交易都會將區塊末尾的代碼執行排隊。如果單個交易在某個池上進行交換，那麼區塊末尾的執行不會改變今天的一切。如果多個人在單個區塊內的某個池上提交交換，那麼合約可以執行區塊拍賣，而不是按照收到的順序執行交換。這使得合約可以為每個人獲得最優惠的價格，並打擊區塊內搶先交易之類的行為。這<em>並不能解決</em>跨區塊搶先交易/反向交易的問題，但這比區塊內搶先交易和夾持交易要難得多。</p><h2><a href="https://ethresear.ch#specification-3" rel="nofollow"></a>規格</h2><p>大部分情況有待確定，但合約支付的 gas 允許交易者之間分攤成本策略（例如，分攤成本並在最後退款），並且要求在塊末尾執行固定的 gas 使用量有助於解決延遲執行引入的箱子填充問題。</p><h2><a href="https://ethresear.ch#considerations-4" rel="nofollow"></a>注意事項</h2><p>允許指定依賴關係可能很有用，因此一個合約可以說“我希望我的塊結束執行在另一個合約的塊結束執行之後運行”。需要小心避免循環依賴，但這可以通過斷言來實現，如果檢測到循環依賴，則循環中的所有合約都不會獲得其塊結束執行。這強烈鼓勵人們<em>只</em>依賴具有固定依賴樹的不可變塊結束執行器。</p></div>

隊列結束塊事務操作碼

原文標題：How Perplexity + Claude Replace an Entire Analyst Team on Polymarket
原文作者：@0xwhrrari
原文編譯：Peggy，BlockBeats
編者按：本文介紹了一種在 Polymarket 上識別套利機會並將其系統化執行的方法：用 Perplexity 完成研究，定位數據與市場定價之間的偏差；用 Claude 搭建交...

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