Remix Ide (ethereum Only)


With all the above being said, I would definitely not say this is a must have — this arguably extends beyond the definition of non-fungibility to a certain degree. The solution proposed by ERC-223 is to only allow transfers to contract addresses that implement the tokenFallback method. This has the nice side effect that the receiving contract gets a chance to do some work when it receives the coins. The basis of this standard is that every NFT is identified by a unique, 256-bit unsigned integer within its tracking contract. The pair will then be a globally unique and fully-qualified identifier for a specific NFT within the Ethereum ecosystem.


The smart contract will answer with the relevant information. In the Ethereum crypto world, assets are also grouped erc-721 into fungibles and non-fungibles. It must follow that two non-fungible tokens are not interchangeable.


What ERC 1155?

ERC-1155 is a digital token standard created by Enjin that can used to create both fungible (currencies) and non-fungible (digital cards, pets and in-game skins) assets on the Ethereum Network. By using the Ethereum network, ERC-1155 tokens are secure, tradable and immune to hacking.

What Are Smart Contracts?

So what is it about non-fungible tokens that gives them this quality? The answer lies in the data or information stored erc-721 within NFTs. A non-secure trasfer transferFrom(), where there is no preliminary authorization verification.

  • ERC-1155 tokens are often described as a “next-generation multi-token standard”, and the focus here is truly a “multi-token” approach.
  • The ERC-721 token standard represents a single unique asset that cannot be interchanged.
  • However, a collection of ERC-721 tokens can prove slow and inefficient, for instance, when transferring multiple armor pieces in a game for a particular character.
  • This is where ERC-1155 comes in, and can offer unique digital NFTs, that allow batch transfers of multiple tokens at once, and at a much faster speed than an ERC-721.
  • The ERC-721 standard is great for tokenizing and creating unique assets that can be transferred from one wallet to another.
  • ERC-1155 is developed by Enjin,and supports both non-fungible tokens as well as fungible tokens.

Erc721 Tokens (non

Unstoppable Domains is powered by the Crypto Name Service , which is also built on the Ethereum blockchain. Fungibility is the key difference between NFTs and other cryptocurrency erc-721 tokens. One Bitcoin in my wallet can be sent to your wallet, and later you may transfer another Bitcoin back; though it may not be the exact same UTXO, it is worth the same value.


All known currencies are fungible as they are representative of equal value, and can be used as a medium of exchange from one person to another. Specific token standards have been created to support the use of blockchain in gaming. These include the erc-721 standard of CryptoKitties, and the more recent ERC-1155 standard. The launch of CryptoPunks In June 2017 paved the way for “rare” art on the Ethereum Blockchain. built from the CryptoPunks model and launched the first marketplace for rare digital art in Oct 2017. /PRNewswire-USNewswire/ — William Entriken, the main author of the ERC-721 non-fungible token (“NFT”) standard and other digital projects, will be joining the BLMP team as an advisor.

What does non fungible mean?

Key Takeaways. Fungibility is the ability of a good or asset to be interchanged for another good or asset of like kind. Like goods and assets that are not interchangeable, such as owned cars and houses, are non-fungible.

The more tokens you want to mint per batch the higher the minting fee, however a minting fee is payable only once for each Smart contract. After that you can erc-721 continue to mint tokens on that same contract for no additional minting fee. When you go to Mintable you will be automatically prompted to connect Metamask.

What is the opposite of fungible?

Definition: of goods or commodities; freely exchangeable for or replaceable by another of like nature or kind in the satisfaction of an obligation. Antonyms: unexchangeable. Definition: not suitable to be exchanged.

BLMP’s innovative efforts to streamline the virtual goods industry will benefit from Entriken’s skill and experience. POAP is a software system that allows humans to collect badges (in the form of non-fungible tokens) every time they participate in an activity, whether in person or remotely. erc-721 That’s the most important thing to know for the ERC721 standard. The rest of the standard is very similar to the ERC20 standard, in particular in terms of token transfers. If you want to know more about the specific functions of the standard, you can read the ERC721 standard document.

The Erc721 Standard

What is the best erc20 wallet?

Best ERC20 Wallets for Android (Mobile)Trust Wallet. Trust Wallet supports Ethereum and all ERC20 tokens minted from Ethereum blockchain.
Enjin Wallet. Enjin Wallet is the best-known mobile wallet for your ERC-20 tokens available at both Google Play and App Store for installing.

ERC721 is a standard interface for Non-Fungible tokens, meaning ERC721 tokens are simply a subset of Ethereum tokens. When someone says they have an “ERC-20” token that just means that the token contract responds to a common set of commands. It means that the token can be transferred, requested, approved, etc in the same way as any other ERC-20 tokens. It does NOT mean the token actually does anything interesting. So if someone is acting all smug they have an ERC-20 token… ignore them. A future EIP may create a global registry of interfaces for contracts.

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