Substrate Kitties NFT Marketplace

A Substrate pallet implementing a complete NFT marketplace for digital collectibles called "Kitties". Each kitty is a unique non-fungible token with randomly generated DNA, ownership tracking, and marketplace functionality.

Features

• NFT Creation: Generate unique kitties with 32-byte DNA signatures
• Ownership Management: Track and transfer ownership between accounts
• Marketplace: Set prices and trade kitties with built-in escrow
• Collection Limits: Bounded collections to prevent storage bloat
• Event System: Comprehensive event emissions for all marketplace activities

Core Functionality

• create_kitty() - Mint new kitties with unique DNA
• transfer() - Transfer ownership between accounts
• set_price() - List kitties for sale or remove from market
• buy_kitty() - Purchase kitties with price validation

Storage

• Tracks total kitty count and individual kitty metadata
• Maps accounts to their owned kitty collections (max 100 per account)
• Stores pricing information for marketplace listings

Development

Build

cargo build

Test

cargo test

Format & Lint

cargo +nightly fmt
cargo +nightly clippy

Dependencies

Built with Polkadot SDK using the latest FRAME v2 architecture.