HomeCoinsZilliqa (ZIL)ZRC-7 is officially in place: What does this mean for our NFTs?...

ZRC-7 is officially in place: What does this mean for our NFTs? | by Aparna Narayanan | Feb, 2022

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Aparna Narayanan

Greetings all,

In early Feb 2022, we introduced and requested public feedback on ZRC-7: The Metadata standard for Zilliqa’s NFTs and creator economy. ZRC-7 complements NFT standards, i.e., ZRC-1 and ZRC-6 by providing a structured format to describe the functionalities of a given NFT. This effectively means that developers in the Zilliqa can follow a unified structure for NFTs, enabling better composability (FYI — Compostability refers to a token’s ability to be seamlessly inter-operable between various protocols).

We have since received great feedback from the community and have incorporated the required changes into ZRC-7. Now, we’re happy to share that the ZRC-7 has been finalised as an official standard for the Zilliqa ecosystem. Details can be found on Github.

ZRC-7 Specifications: https://github.com/Zilliqa/ZRC/blob/master/zrcs/zrc-7.md

To support use cases like these, we have added the following attributes:

  1. MIME types — Describes type of resource, e.g., PDF, JPEG
  2. Integrity — Built for the user to verify that the resource has not been tampered with

*However, developers should be aware of potential gas consumption and ensure that the Data URL is optimal and does not consume too much contract storage space.

Improvements to ZRC-6

Since the finalisation of ZRC-6, we’ve continued to receive great feedback from the Zilliqa community, and actioned some of the changes within the token standard.

  • “SetSpender”
  • “AddOperator”
  • “RemoveOperator”

(This update will provide more verbose information for events emitted. It will be useful for use cases like NFT indexer and frontend interacting with ZRC-6 contracts)

2. Support Data URL for token URI

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