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This standard is an extension of [TEP-62](https://github.com/ton-blockchain/TEPs/blob/master/0062-nft-standard.md). It proposes an additional role (
user
) which can be granted to addresses, and a time where the role is automatically revoked (expires
). Theuser
role represents permission to “use” the NFT, but not the ability to transfer it or set users.This protocol is inspired by ERC4907, so we also refer to this standard as TRC4907 protocol.