True On-Chain Art: Code-Generated NFTs Live Forever on Ethereum
**What makes art truly "on-chain"?**
Most NFTs store tokens on blockchain but keep artwork on IPFS, Arweave, or servers. The blockchain only points to your art - it doesn't contain it.
**Owls NFTs are different:**
- Entire artwork exists as Solidity contract logic
- Contract generates SVG in real-time with zero external calls
- No storage lookups, just pure code execution
**How it works:**
- At mint, contract reads blockhash and combines with token ID
- Creates immutable DNA through keccak256 hashing
- 256-bit seed determines every trait via bit-shifting
**True permanence:**
Your owl replicates across thousands of Ethereum nodes worldwide. As long as the network exists, your art renders identically and deterministically forever.
*Art Blocks recently achieved 90% on-chain artwork* - a milestone showing the industry's shift toward permanent digital art preservation.