A non-fungible token, or NFT, is a digital asset used to represent ownership of unique items or access, whether digital or physical. Most commonly they are used for digital collectibles. Ownership and transfer of an NFT is secured by the Ethereum blockchain, which ensures that one NFT only has one owner at any given time, and that nobody can modify the history of the token’s ownership.

Cryptocurrency is a digital currency or store of value that uses the blockchain, a digital transaction ledger, to record and secure online transactions. Cryptocurrencies can be used to buy goods and services. Currently, the most traded cryptocurrency is Bitcoin, followed by Ethereum.

A blockchain wallet is a digital storage that enables you to store and transact with cryptocurrency. In its simplest form, a wallet comprises a public and private key, which are cryptographically generated.

To make the process of setting up a wallet user-friendly, there are many software wallets, such as Metamask, which equip you with a wallet address, key vault, secure login, and backup options to manage your digital assets securely. Metamask runs as a browser extension and/or mobile app, and you can be up and running in just a couple minutes. Learn more at Metamask FAQ.

With a digital wallet, you hold the keys and are in charge of your own assets. Your assets are only as safe as your keys, so back them up and keep them safe! Remember to never, ever share your seed phrase to anyone. That is for your eyes only.

You can purchase ETH or MATIC through an online exchange for e.g Coinbase. Once you have purchased ETH, you can transfer the funds into your Metamask or another compatible wallet to purchase an NFT. Please keep in mind that there are limits on the amounts of ETH or MATIC you can buy and sell based on your account and the platform you’re using.

NFT marketplaces enable creators and collectors to buy, sell and create. After connecting your wallet, you can purchase, auction or sell a wide range of NFTs. The leading open NFT marketplace is called Opensea, this is also referred to as the secondary market.

This NFT is minted on the Ethereum blockchain for Decentralized Value Systems 1 — Mantou and Polygon blockchain for Decentralized Value Systems 2 — Pasta.

Gas fees, or minting fees, are a transaction fee on the Ethereum blockchain. When you make transactions, such as purchasing an NFT, you will need enough ETH in your wallet for the initial purchase and the associated gas fees.

The gas fee enables your transaction to be processed on the Ethereum network and stored on the blockchain. The price of gas is volatile and fluctuates based on the supply of miners who receive the gas for the transaction vs the demand from consumers/minters making transactions. At mint time, when a user can enter the gas price they wish to pay, a suggested fee is shown by the wallet (e.g. Metamask) to make the transaction.

If the cost of gas price exceeds the fee you offered to pay, your transaction could fail and the gas fee will be lost without the transaction being confirmed. This means that you will have paid gas, without receiving an NFT. Lost gas fees are non-refundable. Move forward at your own risk.

The likely reason is that all NFTs were sold out before your transaction was confirmed. This can happen when other users offer a higher amount of gas, causing their transaction to be prioritized and processed first

The price of gas is volatile and fluctuates based on the supply of miners who receive the gas for the transaction vs the demand from users making transactions.

If your transaction failed, you only lost the gas fee, not the mint fee. The mint fee (0.2 ETH) was retained by your wallet.

Please see What are gas, gwei or minting fees?” for more information.

Gas fees, or minting fees, are a transaction fee that is charged by the Ethereum network, not by NFT creators. These fees are not set by Chow and Lin and we do not collect them. Hence, we are not liable for gas fees.

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• Decentralized Value Systems 1 — Mantou

• Decentralized Value Systems 2 — Pasta

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