Code and Logic Review Highlights

Dispatchable Calls (Core Audit Focus)

Call	Security Risk	Mitigation
register_property()	Malformed input / unauthorized entry	Bounded input, requires Signed origin
update_property()	Tampering by non-owner	Uses ensure_owner() check
transfer_ownership()	Reassignment by spoofing	Origin match + storage verification
deprecate_property()	Unauthorised deletion or misuse	ensure_root() required

Error Handling and Hardening

• All extrinsics return typed Result

• Invalid state transitions explicitly mapped to Error::<T>::*

• panic!() is avoided in favour of graceful error returns

Event Logging

Every extrinsic action emits an event. Events are:

• Typed and namespaced: Event::PropertyRegistered, etc.

• Indexed for external systems to query

• Compliant with audit logging under FCA SYSC guidelines