Out of Gas, full refund! Pak's latest project ASH 2 experienced a failed minting and has already refunded 497 ETH to participants.

Renowned NFT artist Pak launched "CHAPTER TWO – METAMORPHOSIS", where the "burning" of the NFT will yield the token ASH to kickstart the next chapter. However, an "Out of Gas" issue occurred during the minting process, resulting in losses for participants, prompting the official decision to fully compensate them.

Quick Guide to ASH 2

Known as ASH Chapter Two, "CHAPTER TWO – METAMORPHOSIS," each wallet can acquire up to 10 Metamorphosis tokens, with each token representing an artwork created by the Metamorphosis creator, limited to 250 pieces per creator.

Each Metamorphosis token has the ability to "metamorphose." Initially received in its original form, by combining any five tokens, they can transform into another token, resulting in the destruction of four tokens, thereby reducing the supply.

When the token supply of an individual creator falls below 50, they are eligible for a higher level of destruction reward.This series of tokens was initially sold at a price of 50 ASH each.

Out of Gas Incident During Minting, Official Compensation Provided

March 29, Taiwan Time:

• Participants experienced out of gas incidents due to gas estimation issues, leading to transaction failures and resulting in the loss of ETH.
• Bots bought around 6% of the supply, causing a spike in gas prices, preventing actual buyers from purchasing or allowing for mass token minting in a single transaction.

The official decision was made to provide additional tokens in the optimized v2 smart contract to the 430 transactions that experienced an "out of gas" error during minting due to incorrect gas estimation.

Furthermore, addresses affected by the gas estimation error leading to "out of gas" incidents will receive a full refund of the lost ETH.

As of press time, the official ashdrop.eth has compensated participants with 497 ETH within a day. The platform responsible for this release, Manifold, stated: "We will always stand behind the artwork, collaborating artists, and community. We will not stop working until all issues are resolved promptly, allowing us to focus on what matters most: art."

Technical Details and Self-Reflection

Manifold meticulously explained its smart contract design, the issues with EVM gas limit estimation, and the occurrence of out of gas errors. They mentioned that in the future, they will adopt a fixed gas limit policy to address more complex and innovative smart contract function calls.

Additionally, they believe that during large-scale minting events, reliance on MetaMask as the primary source of sales information retrieval should be avoided. Instead, the ability to submit transactions should be retained by the client linked to MetaMask, which could alleviate most issues.

Regarding bots, they suggest implementing security measures such as allowing minting only through the website and captcha verification to prevent direct interaction with the contract. They propose a "pre-registration" system where individuals must authorize spending ASH in advance, extending the minting period until gas prices are lower before proceeding.