Immutable settlement protocols for real-world assets: deployed, ownerless, open templates

I have deployed a collection of independent smart contract protocols on Ethereum mainnet. Each one is finished infrastructure: Immutable, ownerless, no upgrade path. This post is a technical introduction to what they are, how they are structured, and how to build on them. The pattern Every protocol follows the same two-component structure: An ERC primitive that represents a physical or digital asset on-chain Immutable smart contracts that handle neutral, deterministic settlement That is the comp