For Integrators

Protocols integrating rwaUSD need deterministic, on-chain answers for:

• total supply and issuance

• profile-level caps and utilization

• oracle freshness and restrictions

• pause state

• reserve health signals (optional)

15.1 Recommended view functions

Ledger / RiskRegistry / PriceRouter expose:

function totalIssued() external view returns (uint256);

function profileParams(bytes32 profileId) external view returns (
  address token,
  address adapter,
  uint256 safetyFactor,
  uint256 haircut,
  uint256 mintCap,
  uint256 totalPrincipal,
  bool borrowEnabled,
  bool collateralEnabled
);

function price(bytes32 profileId) external view returns (
  uint256 priceUsd,
  uint8 status,
  uint256 updatedAt
);

function systemFlags() external view returns (uint256 flags);

15.2 Recommended invariants for integrators

• rwaUSD mint/burn authority is limited to Ledger

• Ledger does not perform external token calls

• price status is explicit and machine-readable