A system and method for monitoring third party access to a restricted item is provided. Key data is embedded in the restricted item, the key data being associated with a store of value and usable to conduct a transaction against the store of value. A record of the transaction becomes visible in a transaction ledger. The transaction ledger is monitored to determine whether a transaction against the store of value has occurred, and the restricted item is designated as accessed by a third party in the event that a transaction against the store of value has occurred.