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Checkpoint NFT

The Points NFT are soulbound (non-transferable) NFTs that serve as immutable receipts for your points deposits. They provide a permanent, onchain record of your points history and are essential for participating in the Checkpoint ecosystem. Checkpoint NFT Screen Grab Light

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What are Soulbound NFTs?

Soulbound NFTs are a special type of NFT that cannot be transferred to other addresses. They are permanently bound to the wallet that created them, ensuring

Authentic Ownership

Proves you are the original depositor of the points

Immutable History

Creates a permanent record of your points activity

Fraud Prevention

Prevents transfer of points receipts to other users

Audit Trail

Complete transparency of your points journey

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How Point NFTs Work

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Creation Process

When you deposit points into Checkpoint:
  1. Points Verification: Oracle verifies your offchain points
  2. NFT Minting: A unique soulbound NFT is minted to your address
  3. Metadata Recording: Points amount, project, and timestamp are recorded
  4. Permanent Storage: NFT becomes a permanent part of your wallet

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NFT Properties

Each Point NFT contains:
  • Points Amount: The exact amount of points deposited
  • Project ID: Which project the points belong to
  • Deposit Timestamp: When the points were deposited
  • Unique Token ID: A unique identifier for this specific deposit
  • Metadata URI: Link to additional metadata and artwork

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Metadata Structure

{
  "name": "Checkpoint Deposit Receipt for [Project Name]",
  "description": "The Checkpoint Deposit Receipt tracks your points on the blockchain and allows you to sell and trade them on https://checkpoint.exchange",
  "image": "https://metadata.checkpoint.exchange/[chainId]/[pointsId]/[tokenId].png",
  "attributes": [
    {
      "trait_type": "Chain",
      "value": "1"
    },
    {
      "trait_type": "Points ID",
      "value": "1"
    },
    {
      "trait_type": "Points",
      "value": "1337"
    },
    {
      "trait_type": "Rank",
      "value": "420"
    },
    {
      "trait_type": "Protocol",
      "value": "[Project Name]"
    },
    {
      "trait_type": "Address",
      "value": "0x1234.."
    }
  ]
}

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Technical Details

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Smart Contract

Point NFTs are implemented as:
  • ERC-721 Compliant: Standard NFT interface for maximum compatibility
  • Soulbound Extension: Custom logic preventing transfers

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Storage and Retrieval

  • Onchain Data: Core data stored directly onchain
  • Historical Preservation: All historical data is permanently preserved
  • Queryable: Data is queryable onchain via the NFT

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Getting Started

  1. Deposit Points: Start by depositing points from a supported project
  2. Receive NFT: Automatically receive your soulbound Point NFT
  3. View in Wallet: See your NFT in any compatible wallet
  4. Use for Trading: Use the NFT to create trading offers
  5. Track History: Use NFTs to track your complete points history
Important: Point NFTs are soulbound and cannot be transferred. They serve as permanent records of your points deposits and are required for trading activities.