Glossary 
Definitions for key Twin.fun terminology.
- Twin ID: 16-byte identifier (bytes16) that uniquely references a digital twin on-chain.
- Key (Share): Unit of access for a twin, priced by the bonding curve and recorded in contract mappings.
- Subject Fee: Fee share paid to the twin owner on every trade.
- Protocol Fee: Fee share routed to the protocol treasury on every trade.
- MinSharesToCreate: Minimum keys required on the first buy when supply is zero.
- Bonding Curve: Quadratic price function where marginal price increases with supply.
- Subgraph: Off-chain index of on-chain events used for analytics, dashboards, and integrations.
