🎖️ MilestoneNFT Smart Contract

MilestoneNFT is an on-chain reward system that issues NFTs for milestone achievements — ideal for recognizing contributions, performance, or project progress.
Each NFT represents a verified milestone and carries a unique metadata URI.

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📍 Contract Information

• Network: Testnet
• Contract Address: 0x573bC0fc396Cf1703C79090728eE27f416034297
• Standard: Custom ERC-721 (no imports)
• Compiler Version: ^0.8.19
• Admin: Hardcoded inside the contract (must be updated before deployment)
• License: MIT

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⚙️ Features

✅ No Imports / No Constructor – Fully self-contained contract
✅ Admin-Controlled Minting – Only admin can issue milestone NFTs
✅ ERC721-Compatible – Supports transfer, approvals, and balance tracking
✅ Metadata Support – Each NFT can have a custom tokenURI
✅ Milestone Tracking – Each NFT stores an on-chain milestone description
✅ Base URI Customization – Admin can update base metadata URI
✅ Burnable Tokens – Admin or owner can revoke NFTs

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🧠 Core Functions

Function	Description
awardMilestoneNFT(address to, string uri, string milestone)	Admin mints a new NFT as a reward for a milestone.
setBaseURI(string newBase)	Admin updates the base URI for metadata.
milestoneOf(uint256 tokenId)	Returns the milestone text associated with a token.
transferFrom(address from, address to, uint256 tokenId)	Transfer ownership of a token.
burn(uint256 tokenId)	Burn (revoke) an NFT — callable by admin or token owner.
tokensOfOwner(address owner)	Returns all token IDs owned by an address.

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🏷️ Example Workflow

1. Admin awards milestone:

   awardMilestoneNFT(0xUserAddress, "ipfs://QmHashOfMetadata", "Completed Phase 1");
   

2. User checks their NFT:

   tokensOfOwner(0xUserAddress);
    milestoneOf(tokenId);
    tokenURI(tokenId);
   

3. Transfer NFT (optional):

   transferFrom(0xUserAddress, 0xAnotherUser, tokenId);
   

4. Admin updates metadata (if needed):

   setBaseURI("https://myproject-metadata.xyz/nft/");