erc-1155 | Ethereum Semi Fungible Standard (ERC-1155) | Blockchain library

erc-1155 is a TypeScript library typically used in Blockchain, Ethereum applications. erc-1155 has no bugs, it has no vulnerabilities and it has low support. However erc-1155 has a Non-SPDX License. You can download it from GitHub.

The contracts in this repository follow a standard implementation of an ([ERC-1155] contract. This standard provides basic functionality to track and transfer multiple tokens and the interface provide an API other contracts and off-chain third parties can use. ERC-1155 contracts keep track of many token balances, which can lead to significant efficiency gains when batch transferring multiple token classes simultaneously. This is particularly useful for fungible tokens that are likely to be transfered together, such as gaming items (cards, weapons, parts of objects, minerals, etc.). The possible efficiency gains are more significant if the amount of tokens each address can own is capped, as shown in this implementation examples. This repository contains two main implementations of the ERC-1155 token standards: [ERC1155] ) and [ERC155PackedBalance] ). The latter implementation packs multiple balances within a single uint256 using bitwise operations. This brings the cost of transferring 100 different token classes to 467,173 gas, an average of 4,671 gas per token type transfer. Still using MT, but without balance packing, transferring 100 different token types costs 2,763,399 gas, an average of 27,633 gas per token transfer. The latter is already an improvement over multiple fungible tokens that are stored on different contracts, since cross-contract calls have a base cost of 700 gas. This is ignoring the cost of initial approvals that would need to be set for each user and existing ERC-20 tokens.