Current Status: PROPOSED STANDARD
            This protocol does not exist yet. This documentation describes what we believe should be built.
         
        The Problem We Want to Solve
        
            Bitcoin NFTs are too expensive and slow
            
                - 10,000 NFT collection costs $25,000+ to inscribe
 
                - Each trade takes 10+ minutes to confirm
 
                - Trading fees are $2-5 per transaction
 
                - No instant settlement option
 
            
         
        What We Want This Protocol to Enable
        
            1. Cheap NFT Creation
            Use recursive inscriptions to reference parent traits instead of duplicating data:
            
                - Inscribe each trait once (background, body, eyes, etc.)
 
                - NFTs just reference trait IDs (500 bytes vs 50KB)
 
                - Target: $2,000 for 10K collection instead of $25,000
 
            
         
        
            2. Instant Trading via Lightning
            Enable sub-second NFT trades through Lightning Network:
            
                - Payment settles instantly via Lightning
 
                - Ownership transfer queued for next block
 
                - HTLC ensures atomic swap
 
                - Target: <10ms payment, 10min ownership finality
 
            
         
        
            3. Marketplace Detection
            Simple protocol marker for marketplace integration:
            
{
  "p": "sparkle",
  "v": 1,
  "lightning": true
}
            
            Marketplaces can detect and show Lightning badge on compatible NFTs.
         
        What Needs to Be Built
        
            For Developers
            
                - Indexer that detects Sparkle protocol markers
 
                - Integration between ord and Lightning node
 
                - HTLC coordination for atomic swaps
 
                - State checkpointing mechanism
 
            
         
        
            For Users
            
                - Wallet that supports both ordinals and Lightning
 
                - Simple UI for instant NFT trading
 
                - Clear indication of Lightning-enabled NFTs
 
                - Transparent fee structure
 
            
         
        
            For Marketplaces
            
                - Protocol detection in indexer
 
                - Lightning invoice generation
 
                - Payment monitoring via spark.money or similar
 
                - Badge/indicator for Lightning-enabled NFTs
 
            
         
        How It Could Be Adopted
        
            Natural Adoption Path
            
                - Proof of Concept: Someone builds a working demo
 
                - Cost Savings Drive Interest: 92% reduction attracts creators
 
                - One Major Collection: High-profile project uses it
 
                - Marketplace Integration: One marketplace adds support
 
                - Network Effects: More users demand Lightning trading
 
            
         
        Why It Makes Sense
        
            
                - Bitcoin has Lightning: Infrastructure already exists
 
                - spark.money works: Lightning payments are proven
 
                - Recursive inscriptions work: Technology is ready
 
                - Cost pressure is real: $25K for 10K NFTs is prohibitive
 
                - Speed matters: 10-minute trades limit volume
 
            
         
        What We're NOT Claiming
        
            
                - This is NOT built yet
 
                - There is NO SDK available
 
                - There is NO production deployment
 
                - There are NO partnerships confirmed
 
                - This is a PROPOSAL, not a product
 
            
         
        Next Steps for Someone Who Wants to Build This
        
            
                - Test recursive inscription cost model
 
                - Build proof-of-concept indexer
 
                - Create Lightning HTLC coordinator
 
                - Deploy test collection on testnet
 
                - Measure actual costs and speeds
 
                - Open source the implementation
 
                - Propose to Bitcoin/Ordinals community