ERC-1155 is an Ethereum token standard that allows a single smart contract to create, hold, and transfer multiple token types. Unlike earlier standards that typically require separate contracts for different assets, ERC-1155 supports fungible tokens (interchangeable units), non-fungible tokens (unique items), and even semi-fungible designs where assets can shift behavior over time.
How ERC-1155 works and why it is different
ERC-1155 is often called a multi-token standard because one contract can represent many assets by using token IDs. Each ID can correspond to a distinct token type, such as a game currency, a specific in-game item, or a limited-edition collectible. This design reduces the need to deploy and maintain many contracts, which can simplify development and auditing.
A key feature is batch operations. ERC-1155 can transfer multiple token IDs and amounts in a single transaction. For users, that can mean fewer approvals and fewer on-chain actions. For developers and platforms, it can mean more efficient contract interactions and a smoother experience for applications that routinely move bundles of assets.
Common uses in NFTs, gaming, and marketplaces
ERC-1155 is widely used in blockchain games and NFT ecosystems where players manage inventories containing many items. For example, a game might issue gold as a fungible token and swords or skins as NFTs, all inside one ERC-1155 contract. Marketplaces can also benefit because listing, buying, or airdropping collections of items can be handled in batches rather than as separate token transfers.