Abstract: A method for verifying transactions in a subnet by a validator node of the subnet includes receiving, from a user of the subnet, an encrypted transaction, the transaction being encrypted by a public key associated with an auditor of the subnet. The method further includes providing a decryption request to a digital wallet, the request including encrypted data from the transaction. The method further includes receiving decrypted data from the digital wallet in response to the decryption request, and using the decrypted data, performing a verification operation on the transaction.

Abstract: A computer system operated by a retailer, and optionally by an independent gift service provider, affords the intended recipient of a gift the opportunity to make a virtual gift exchange. Instead of physically receiving the gift, the recipient is enabled by the computer system to view a representation of the gift and to make various selections concerning the disposition of the gift, including exchange for credit, replacement by a product or products of equal, lesser, or greater value, or designation of a new recipient who then stands in the place of the originally designated recipient.