Blockchain supported banknote
AssigneeBundesdruckerei GmbH
InventorsChristoph Boesch, Florian Peters, Joerg Rueckriemen, Piotr Szegvari
Life of this patent
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Abstract
A banknote includes a security element with a processor and a memory. A private cryptographic key of an asymmetric key pair of the banknote is stored in a protected memory area of the memory. The asymmetric key pair is assigned to a banknote-specific blockchain address in a blockchain. A payment method executed with the banknote includes receiving a payment request for a payment with the banknote in the form of a transaction of an amount to be paid from the blockchain address of the banknote to a blockchain address of a payee, signing a transaction approval with the private cryptographic key of the banknote, and sending the signed transaction approval.
Claims18
A banknote comprising a security element including sensors, a processor and a memory with program instructions,
- wherein a banknote-specific private cryptographic key of an asymmetric key pair of the banknote is stored in a protected memory area of the memory, wherein the asymmetric key pair is assigned to a banknote-specific blockchain address in a blockchain managed by a central bank issuing the banknote,
- wherein the processor is configured to execute a payment method with the banknote when executing the program instructions, wherein the payment method comprises:
- monitoring, by the sensors, the security element against unauthorized electrical and physical manipulation;
- receiving a payment request for a payment with the banknote in the form of a transaction of an amount to be paid from the blockchain address of the banknote to a blockchain address of a payee, wherein the payment request specifies the amount to be paid and the blockchain address of the payee;
- signing a transaction approval with the private cryptographic key of the banknote, wherein the transaction approval comprises the blockchain address of the banknote, the blockchain address of the payee, and the amount to be paid;
- and
- sending the signed transaction approval.
A method for using a banknote, wherein the banknote comprises a security element including sensors, a processor and a memory with program instructions,
- wherein a banknote-specific private cryptographic key of an asymmetric key pair of the banknote is stored in a protected memory area of the memory, wherein the asymmetric key pair is assigned to a banknote-specific blockchain address of a blockchain managed by a central bank issuing the banknote,
- wherein the processor is configured to execute a payment method with the banknote when executing the program instructions, wherein the payment method comprises:
- monitoring, by sensors, the security element against unauthorized electrical and physical manipulation;
- receiving a payment request for a payment with the banknote in the form of a transaction of an amount to be paid from the blockchain address of the banknote to a blockchain address of a payee, wherein the payment request specifies the amount to be paid and the blockchain address of the payee;
- signing a transaction approval with the private cryptographic key of the banknote, wherein the transaction approval comprises the blockchain address of the banknote, the blockchain address of the payee, and the amount to be paid;
- and
- sending the signed transaction approval.
Dependencies are inferred from the claim text.