Abstract: 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.

Abstract: A system and method of enabling a user to transact using cryptocurrency of a value defined in relation to a different medium of exchange or financial instrument is provided. In the method, a request to create a voucher having a face value remaining defined in relation to the medium of exchange or financial instrument is received. A voucher having key data being associated with a voucher cryptocurrency address holding a token amount of cryptocurrency included therein is generated. A transaction ledger is monitored to determine whether a redeeming transaction against the voucher address has occurred against a destination cryptocurrency address. Responsive to a redeeming transaction against the voucher address occurring, an additional amount of cryptocurrency is transferred to the destination address. The additional amount of cryptocurrency being calculated such that the sum of the token and additional amounts substantially matches a cryptocurrency equivalent of the face value of the voucher.

Abstract: 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.