**# 🎨 Sui NFT Display Standard Challenge #2

A demonstration of Sui's Display Standard for NFTs, showcasing how metadata can be modified without changing the actual NFT data.

📋 Challenge Overview

This project implements an NFT using Sui's Display Standard, demonstrating the decoupling of hardcoded NFT metadata from flexible display metadata. The challenge culminates in "feeding the NFT to a rabbit" 🐰 which modifies the display metadata without touching the NFT itself.

✨ Features

• NFT with Display Standard: Complete implementation of Sui's Display Standard
• Flexible Metadata: Display templates can be modified independently from NFT data
• Required Fields: Implements name, image_url, and description in both NFT object and Display
• Rabbit-Compatible: Ready to be fed to the challenge's feed_rabbit function

🏗️ Project Structure

.
├── sources/
│   └── display_nft.move    # Main NFT module with Display Standard
├── Move.toml               # Package configuration
└── README.md              # This file

🚀 Quick Start

Prerequisites

• Sui CLI installed and configured
• Active Sui wallet with testnet SUI tokens

1. Build the Project

sui move build

2. Deploy the Package

sui client publish --gas-budget 100000000

Save these IDs from the output:

• Package ID
• Display Object ID (type: Display<MyNFT>)
• Publisher ID

3. Mint Your NFT

sui client call \
  --package <YOUR_PACKAGE_ID> \
  --module display_nft \
  --function mint_nft \
  --args "My Cool NFT" "https://example.com/nft.png" "An amazing NFT for the challenge" \
  --gas-budget 10000000

4. Feed to Rabbit 🐰

sui client call \
  --package 0xaa3e79b37f336fa23ce354ddaa82391a7903690e78e46f61a197537be0b318b3 \
  --module display \
  --function feed_rabbit \
  --type-args <YOUR_PACKAGE_ID>::display_nft::MyNFT \
  --args <YOUR_DISPLAY_OBJECT_ID> \
  --gas-budget 10000000

📦 Deployed Example

Here's a working example deployment:

• Package ID: 0xf34d2ae5187bff8336a98cd62fd8a19a1cbb59217b319d1a53c5fbf472769192
• Display Object ID: 0xe27c39b7f02ee88f4c1a570ac97b732890652e04b089d7407888595e87ff3a0f
• Sample NFT ID: 0x8e1d760cc01a24ea82a5a6a1ef168743c682cf2adb566fb9f83af8474212887a
• NFT Metadata:
  • Name: "WAT"
  • Image: WAT meme
  • Description: "Just WAT"

🔍 Key Concepts

Display Standard

The Display Standard allows developers to create templates for how NFTs are displayed:

let keys = vector[
    string::utf8(b"name"),
    string::utf8(b"image_url"),
    string::utf8(b"description"),
];

let values = vector[
    string::utf8(b"{name}"),      // Template references NFT field
    string::utf8(b"{image_url}"), // Can be modified later
    string::utf8(b"{description}"),
];

NFT Structure

public struct MyNFT has key, store {
    id: UID,
    name: String,        // Original data (immutable)
    image_url: String,   // Original data (immutable)
    description: String, // Original data (immutable)
}

The Magic 🪄

• NFT data stays on-chain and unchanged
• Display object can be modified to change how the NFT appears
• Rabbit function modifies the Display, demonstrating flexibility

📚 Available Functions

mint_nft

Mints a new NFT with custom metadata.

Parameters:

• name: The NFT name
• image_url: URL to the NFT image
• description: Description of the NFT

update_display

Updates the Display object templates (optional).

Parameters:

• display: Mutable reference to Display object
• name_template: New template for name field
• image_template: New template for image_url field
• description_template: New template for description field

Getter Functions

• name(nft: &MyNFT): Returns NFT name
• image_url(nft: &MyNFT): Returns NFT image URL
• description(nft: &MyNFT): Returns NFT description

🎯 Challenge Completion Checklist

• NFT has name, image_url, and description fields
• Display object created with matching fields
• Display object can be transferred and used
• Compatible with feed_rabbit function signature
• Successfully fed to rabbit 🐰

🐰 About feed_rabbit

The feed_rabbit function is provided by the challenge organizers:

public fun feed_rabbit<T: key>(display: &mut Display<T>)

This function takes your Display object and modifies it, demonstrating how display metadata can change without altering the underlying NFT data.

🔗 Useful Links

• Sui Documentation
• Display Standard Guide
• Challenge Package

💡 Tips

1. Save your Display Object ID - You'll need it for the feed_rabbit function
2. Type arguments are required - Don't forget --type-args when calling feed_rabbit
3. Gas budget - Make sure you have enough SUI for transactions
4. Verify on explorer - Check your transactions on Sui Explorer

🏆 Challenge Submission

Deadline: November 24th, 15:00 CET

Make sure to submit:

• Your package ID
• Display object ID
• Transaction hash of feeding to rabbit
• Any additional documentation

📝 License

This project is created for the Sui NFT Display Challenge.

🙏 Acknowledgments

Thanks to the Sui Foundation and challenge organizers for providing this learning opportunity!

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Happy Building on Sui! 🚀✨**