Crypto glossary
ERC-404
ERC-404 is an experimental, unofficial token design that pairs an ERC-20 balance with NFTs, minting or burning an NFT as holders cross whole-token amounts.
ERC-404 appeared in early 2024 with the Pandora project. It merges fungible and non-fungible behaviour in one contract: holding exactly one whole token means holding one NFT, and buying or selling fractions changes the count. When a wallet's balance drops below a whole unit, the corresponding NFT is burned; when it reaches a new whole unit, a fresh NFT is minted, often with new random traits.
The appeal was liquidity. Instead of waiting for a buyer on an NFT marketplace, holders could trade fractions instantly on decentralised exchanges, and the constant minting and burning of traits created a game around rerolling for rarer pieces. It triggered a short speculative wave and spin-offs such as DN-404, which split the logic across two linked contracts.
Despite the name, ERC-404 never went through the Ethereum Improvement Proposal process and is not an accepted standard. Early contracts were gas-hungry, had bugs and behaved unpredictably with some wallets and marketplaces. Sending fractions can unexpectedly destroy an NFT a holder wanted to keep.
Example
A collector who holds 1.0 of an ERC-404 token sells 0.2 on a DEX; their balance falls below one, so the contract burns their NFT, and the buyer gets no image until they reach a whole unit.
Related terms
Latest articles on ERC-404
- NFT Market Today: Ethereum Dominates with $10M+ in Sales; ERC-404 Pandora Takes the Lead
- Injective Introduces CW-404 Tokens to Rival ERC-404, Making NFT Fractional Ownership Mainstream
- ERC-404 Tokens: Stirring Controversy – Passing Trend or the Future of Blockchain?
- Gas Fees Skyrocket to 8-Month High as Ethereum’s ERC-404 Token Standard Takes Off
- Why Are the New ERC-404 Tokens Becoming the New Boom in the Crypto Market?