Technical Architecture

Diamond pattern

The protocol is built on the EIP-2535 Diamond pattern for modularity, upgradeability, and shared storage:

1. Diamond contract: the main entry point, delegating function calls to the appropriate facets.

2. Facets: modular contracts, each implementing one area of functionality.

3. Shared storage: a structured storage layout accessible across all facets, which keeps state consistent and upgrades safe.

Storage architecture

Storage contract	Purpose	Key data structures
AppStorage	Global configuration	System version, collateral whitelist, limits, timeouts, PartyB configurations
AccountStorage	User balances and accounts	Scheduled releases, withdrawal records, nonces
SymbolStorage	Trading instruments	Symbol definitions, oracle references, instrument configurations
TradeStorage	Active positions	Open intents, close intents, active trades
StateControlStorage	System state management	Pause states, emergency flags, suspended addresses
AccessControlStorage	Permission management	User roles, access rights

Facet organization

Account management

• Account Facet: manages user deposits, withdrawals, balances, and collateral allocation.

Trading operations

• PartyA Open Facet and PartyA Close Facet: handle PartyA's position opening and closing intents.

• PartyB Open Facet and PartyB Close Facet: manage PartyB's intent locking, unlocking, and filling.

• Trade Facet: manages trade execution and cancellation.