In embodiments of the present invention, methods are provided for maintaining a plurality of public addresses, and a plurality of virtual representations of a plurality of respective items. For each virtual representation, a set of digital tokens may respectively correspond to an item represented by the virtual representation, and each digital token may be cryptographically linked with the corresponding virtual representation. Owners of a token may request redemption of the digital token and have ownership information and fulfillment details verified. Fulfillment details may be provided to a fulfillment system that satisfies transactions for items.

In embodiments of the disclosure a method is disclosed for exchanging digital tokens from a message-based application is disclosed. The method includes displaying, by a digital wallet GUI, an inventory of tokens that are owned by a user. Each token is linked to a virtual representation of an item and redeemable for an instance of the item. The method also includes receiving an instruction to transfer a digital token from the inventory of tokens to a recipient and displaying a keyboard that includes a selectable media content that represents the item linked to the token. The method also includes receiving a selection of the media content and embedding a token identifier of the token in a text-based message that is sent to the recipient, such that the recipient can select the selectable media content to accept to the digital token into a respective digital wallet of the recipient.

In embodiments of the present invention, systems are provided for an interface configured to handle a unique identifier for a first digital token, a cryptographic token generation system that generates a second digital token that is unique and cryptographically secure, and a linking system configured to generate a one-to-at-least-one link between the second digital token generated by the cryptographic token generation system and the first digital token, such that the second digital token provides a unique digital tokenization of the first digital token. In embodiments, a rule system is configured to manage and apply a set of rules to the second digital token, wherein the set of rules includes a lock rule that restricts one or more transaction actions involving the second digital token and an unlock rule that removes the restriction of the one or more transaction actions involving the second digital token.

In embodiments of the present invention, methods are provided for maintaining a plurality of public addresses and a plurality of virtual representations and digital tokens of a plurality of items where each digital token is cryptographically linked to a respective instance of the item represented by the virtual representation. A request may be received to participate in a transaction for an item represented by a specific virtual representation and a transfer request received to transfer the specific digital token to a different user, where the transfer request includes a digital-token identifier that identifies the specific digital token and a public address of the different user, and a token validation and redemption process is completed.

In embodiments of the present invention, methods are provided for executing a smart contract that facilitates electronic transfer of non-fungible tokens to a user according to a recipe. Each respective non-fungible token may be cryptographically linked with a digital representation of a respective asset that can be won by the user. A recipe may define a respective probability that the respective non-fungible token is awarded to the user and a manner by which the respective non-fungible token is awarded to the user. A smart contract may be generated using a random number and one of the non-fungible tokens selected based on the random number and the recipe and transferred to a digital wallet of the user.

A method for peer-to-peer prepaid card accounts can create a prepaid card that can receive donations through a QR code disposed on the physical card. Restrictions can also be placed on the card to control where or how the funds may be used. The method can, in response to receiving a request at a card management service to create an account, obtain account information, wherein the account information comprises a user name, an account number, a QR code image, and optionally a biometric data. The account information can be stored as a card account for the user, which is funded by receiving a payment from a second party using the QR code. Then, when a card holder uses the card for a transaction, the card management service can function as an issuer to authorize its use.

Methods and systems disclosed herein may communicate information, such as alerts and notifications, to a cardholder via a color-changing transaction card. In particular, the cardholder may configure one or more thresholds that establish when a transaction card may change colors. For instance, a transaction card may change colors at, or while approaching, a first threshold. The transaction card may change colors at, or while approaching, a second threshold. When the cardholder's balance goes below the thresholds, the transaction card may revert back to the lower threshold color or the original color of the transaction card. Using the techniques described herein a financial institution may convey information to a cardholder in a way that does not require the cardholder to digital engage with the financial institution.

A method includes receiving a communication identifying a remote database and a first value stored in the remote database that is being transferred to a first entity by a second entity. That first value is capable of being modified by the second entity. Modification of the first value stored in the remote database by the second entity is prevented by identifying an application programming interface allowing operations to be performed on the remote database, and using that API to transfer the first value so as to be associated with one or more other identifiers unknown to the second entity. After modification of the first value stored by the second entity is prevented, a transfer of a second value to a database record associated with the second entity is triggered. Related systems and applications of the method and those systems are also disclosed.

A method for peer-to-peer prepaid card accounts can create a prepaid card that can receive donations through a QR code disposed on the physical card. Restrictions can also be placed on the card to control where or how the funds may be used. The method can, in response to receiving a request at a card management service to create an account, obtain account information, wherein the account information comprises a user name, an account number, a QR code image, and optionally a biometric data. The account information can be stored as a card account for the user, which is funded by receiving a payment from a second party using the QR code. Then, when a card holder uses the card for a transaction, the card management service can function as an issuer to authorize its use.

In embodiments of the present invention, methods are provided for receiving a request to collateralize a collateral item of a user seeking a loan, along with information and a photograph of the collateral item. A processing system may generate a virtual representation of the collateral item based on the information and photograph and generate a digital token based on the virtual representation. Ownership of the digital token may be assigned to the user seeking the loan and an instance of a smart contract governing the loan may be generated and deployed, the instance of the smart contract indicating an amount to be paid back by the user to the lender and one or more conditions that cause ownership of the digital token to be transferred to the lender.