What if you could buy a promise that guarantees your transaction will be included in the NFT first-come, first-served minting block?? -> Let's easily study the term "preconfirmation," which you will hear often in the Ethereum ecosystem! Preconfirmation is a promise provided for a specific block. A simple example is receiving a promise from a validator who will create a block in slot 1123456 saying, "Put my transaction in," and paying them for it. Blocks are created every 12 seconds in Ethereum. The space for putting in this block is called a slot. And 32 slots are gathered to form an epoch. Ethereum predefines which validator will create a block for each epoch, meaning you can know in advance who will create the next 32 blocks. @ETHGasOfficial is a project that provides an auction market allowing validators to sell block space in advance when they become block proposers using preconfirmation. Validators using ETHGas can list the block space they will create for sale and receive transactions in advance when they become block proposers. This can be a single transaction or the Whole Block. If a blue-chip NFT minting is scheduled for a specific slot, it could be a huge profit if you could sell the entire right to configure transactions in that block. What happens if the promise is not kept? Validators who want to register with ETHGas must hold Ethereum as collateral to pay a penalty if they do not keep their promise. This is resolved through a restaking layer like EigenLayer. Validators are changing the most commonly used external module, MEV-Boost, to Commit-Boost to provide preconfirmation. Preconfirmation can enhance user experience through the pre-confirmation of Ethereum transactions and provide validators with a new revenue model beyond MEV, increasing staking APY. Since preconfirmation is a technical element supported by key researchers of the Ethereum Foundation, including Justin Drake, we can expect more teams using this technology, like ETHGas, to emerge in the future.