Understanding token standards
ERC-721
The standard for non-fungible tokens, often used for collectibles and games. This set of interfaces, contracts, and utilities are all related to the ERC721 Non-Fungible Token Standard.
ERC-1155
A novel standard for multi-tokens, allowing for a single contract to represent multiple fungible and non-fungible tokens, along with batched operations for increased gas efficiency. ERC1155 Multi Token Standard.