A chain of title is the chronological sequence of ownership, transfers, and legal interests affecting a property over time. It establishes the historical record of who owned the property, how ownership changed, and any encumbrances (e.g., mortgages, easements) or legal restrictions (e.g., by-laws, Planning Act controls) affecting the land. In Ontario, a thorough chain of title is critical for real estate transactions to confirm clear ownership and compliance with legal requirements, particularly under the Registry Act, Land Titles Act and the Planning Act.