EP3673440A1

EP3673440A1 - Indirect transaction processes on the basis of a blockchain architecture

Info

Publication number: EP3673440A1
Application number: EP18755456.3A
Authority: EP
Inventors: Alexander Graf; Michael Rotter; Susanne FLUG; Johannes PECHER
Original assignee: ZF Friedrichshafen AG
Current assignee: ZF Friedrichshafen AG
Priority date: 2017-08-25
Filing date: 2018-08-14
Publication date: 2020-07-01
Also published as: US20200202334A1; WO2019038137A1; CN110832526A; DE102017214902A1

Abstract

The invention relates to a transaction device for a terminal of an owner for preparing transactions between the owner and a service provider, the transaction device being designed to execute a computer program having software code portions in order to calculate a transaction amount for this service, and to generate a message regarding the transaction amount, and the transaction device comprising an output interface, which is designed to provide this message for the owner. The invention further relates to an intelligent contract for preparing and/or executing transactions between an owner of a terminal and a service provider. In addition, the invention relates to a method for preparing such a transaction in a computer network based on a blockchain, to a computer program product for carrying out said method, to a terminal having a transaction device according to the invention, to a transaction system for a terminal of an owner for executing transactions between the owner and a service provider, to a method for a terminal of an owner for executing transactions between the owner and a service provider in a computer network based on a blockchain, and to a computer program product for carrying out said method.

Description

Indirect transactions based on a blockchain architecture

The invention relates to a transaction device for a terminal of a holder for preparing transactions between a holder and a service provider according to claim 1, an intelligent contract for preparing and / or executing transactions between a holder of a terminal and a service provider according to claim 7, a method for A terminal of a holder for preparing transactions between a holder and a service provider in a block-based computer network according to claim 11, a computer program product according to claim 13, a terminal having a transaction device according to claim 14, a transaction system for a terminal of a holder for execution of transactions between the holder and a service provider in a block-based computer network according to claim 16, a method for a terminal of a holder for executing transac tions between the holder and a service provider in a block-based computer network according to claim 23 and a computer program product according to claim 25.

Blockchain is a term for the technology known in the art to create a distributed database.

The following definitions apply to the terms used to describe the invention.

The blockchain is a decentralized database. Blockchains, in particular in the financial services sector, are known for carrying out transactions with digital currencies.

A transaction is an exchange or transfer of values or data. In particular, a transaction is a transfer process in which goods and receivables are transferred between business entities. A money transfer is a transaction. In the case of a money transfer, the transaction amount is the monetary amount of this money transfer, whereby the money transfer may also result in transaction fees. For example, the amount of money to be transferred of 1 € may consist of 99 cents of cost and 1 cents fee for the platform on which the money transfer is made.

Digital currencies are digital means of payment. In particular, digital means of payment using cryptography principles to realize a distributed, decentralized and secure payment system, so-called crypto currencies. An example of a cryptocurrency is Bitcoin.

Blockchain technology is also referred to in the financial services industry as Distributed Ledger Technology, a technology for a decentralized general ledger. The decentralized general ledger is not stored centrally but is stored on many different computers on which it is updated. The distributed ledger is created automatically by the blockchain or the decentralized storage of the data on different computers. Characteristics of this technology are its decentralization, immutability and transparency.

Hyperledger is an open source, open source project of the Linux Foundation, in which industrial companies jointly develop blockchain based distributed ledgers. Hyperledger Fabric is a blockchain implemented by IBM into the Hyperledger project.

Another example of a cryptocurrency is the ether, which is used to pay the computing power in Blockchain Ethereum. Ethereum is a block chain used to run smart contracts. Smart Contracts are also available in other blockchains, for example in the Hyperledger Fabric.

An intelligent contract is a computer program that depicts contracts, verifies and / or technically supports the negotiation and / or execution of a contract. A blockchain is implemented in a computer network in which all computers are interconnected and equal and both use and provide services. The network subscribers can be divided into different groups, for example customer and authorization nodes. The computer network can be realized on the Internet.

In this case, a computer is a device for processing data that can process data by means of programmable calculation rules. In a computer network, a computer enables communication with other computers.

A computer-to-computer connection, where all computers are connected and equal, is called peer-to-peer connection. The opposite of a peer-to-peer connection is the client-server model, where a central server offers a service and a client uses that service.

In simple terms, a blockchain is a chain of blocks in which transaction data are linked together. The transactions are combined into blocks, checked for validity and added to the previous chain of blocks in a consensus process. So a customer executes a transaction in the blockchain. Each participant knows that this transaction has taken place. If the transaction is valid, that is, considered valid by the consensus process, no participant can change the legitimacy of that transaction.

The invention has for its object to provide an improved overall system for preparing and executing transactions by means of a block chain, in particular such an integrated system integrated in the mobility-serving machines. In particular, the overall system should enable automatic execution and acceptance of intelligent contracts.

This object is achieved with a transaction device for a terminal of a holder for preparing transactions between the holder and a service provider with the features of claim 1, an intelligent contract for preparing and / or executing transactions between a holder of a A terminal and a service provider having the features of claim 7, a method for a terminal of a keeper for preparing transactions between the keeper and a service provider in a block-based computer network having the features of claim 11, a computer program having the features of claim 13, a terminal having a transaction device according to the invention having the features of claim 14, a transaction system for a terminal of a holder for performing transactions between the holder and a service provider in a block-based computer network according to claim 16, a method for a terminal of a holder for performing transactions between the holder and a service provider in a block-based computer network having the features of claim 23 and a computer program product having the features of claim 25.

Further developments and advantageous embodiments of the invention are specified in the subclaims.

The holder-terminal transacting device according to the present invention for preparing transactions between the holder and a service provider has an input interface which is adapted to receive conditions of the service provider of a service and a destination address of that service provider. The transaction device is adapted to execute a computer program comprising software code sections to calculate a transaction level for that service and to generate a message in response to a comparison of conditions defined by the holder for that terminal with the conditions of the service provider at least the transaction level, the service and the destination address of the service provider, and preferably this conditions defined by the holder for this terminal includes. Furthermore, the transaction device has an output interface that is designed to provide this message to the holder. A transaction device is a device that processes incoming information and outputs a result resulting from this processing. In particular, a transaction device is an electronic device, in particular an electronic circuit, such as a central processor unit or a graphics processor.

A terminal is a subscriber with whom the keeper participates in services provided by the service provider. The service of the service provider for the terminal is provided. The terminal may be connected to a network termination of a data and / or telecommunications network. For example, a vehicle or a vehicle of a vehicle fleet of the holder is a terminal of the holder. In addition, a refrigerator, a lawnmower or a bicycle is a terminal of a holder.

If the terminal of the keeper is a vehicle, values transmitted by the transaction may, in particular, be values of a service book of the vehicle, for example oil and / or mileage or values for last vehicle inspections. The service book of the vehicle is called CarPass in connection with an electronic purse, a so-called eWallet, which can be used to participate in a blockchain. With the CarPass, an additional evaluation of the vehicle can be made to see if the vehicle is a good, that is, high-value, car or not. In the CarPass, the value of the vehicle can also be specified in order to obtain a residual value of the vehicle by means of a residual value calculation.

A service, also called service, is a work or a service in the economy, which does not directly serve the production of goods, but with which for a customer a problem is solved or a task is accepted. For example, refueling is a service.

An interface is a device between at least two functional units, at which an exchange of logical quantities, eg data or physical quantities, eg electrical signals, takes place either only unidirectionally or bidirectionally. The Exchange can be analogue or digital. The exchange can also be wired or wireless.

A destination address, also called the destination address, of the service provider is an address with which the service provider can be identified. A destination address may be generated, for example, with the transaction device in which an asymmetric cryptographic key pair consisting of a public key and a private key is generated. The destination address is then generated from the public key.

The transaction device according to the invention has the advantage that, by comparing conditions defined by the holder for this terminal for accepting the service with the conditions of the service provider, the service provider can select from the transaction device the conditions of the holder for this terminal for acceptance of the service Service most profitable fulfilled. For these services of the respective service provider which best suits the holder's conditions, the transaction device automatically calculates the transaction amount required for this service, which is then provided to the holder by the issued message. This preparation of transactions between the holder and the service provider has the advantage that the holder can use any number of different terminals with little effort to receive services from service providers. In order for settlement of the transaction amount, for example, payment of a certain amount of money, the message contains information about the transaction amount and the destination address of the service provider.

Advantageously, the transaction device is a client node of a blockchain-based computer network.

A customer node is an electronic device that is connected to the computer network and that generates and sends transactions and / or from other customers. can receive the node in order to be able to settle transaction levels.

Preferably, the transaction device is adapted to provide the message to nodes of a block-chain-based computer network, preferably broadcast, with authorization nodes of the computer network designed to validate that message using the blockchain and provide that validated message to the holder.

An authorization node is an electronic device connected to the computer network. In the authorization nodes, the transactions are checked for validity and appended to the block chain in a new block. To validate the transactions, the authorization nodes execute a matching algorithm, also called consensus algorithm. This matching algorithm ensures that the next block of a blockchain is the only true block. In addition, the matching algorithm ensures that the blockchain is not changed by third parties.

An example of a match algorithm is the proof of work algorithm, in which each block of the block chain is identified by a hash value and a parent block references the block chain.

Here, a hash value is a value of a hash function, i. an image that maps a large input set to a smaller target set.

The authorization nodes that execute a proof of work algorithm are also called mining nodes, also known as mining nodes. A prospecting node receives transactional messages from the client nodes to validate them in time competition with other blockchain mining nodes. The first mining node, which succeeds in validating a transaction message, creates another block of the blockchain and signals this to the other mining nodes. Other examples of matching algorithms include the Proof of Authority, Proof of Stake, Proof of Activity, Proof of Capacity, Proof of Capacity, and the Proof of Elapsed Time Algorithm. The proof of authority algorithm is particularly beneficial. Unlike the proof of work algorithm, where multiple mining nodes in a contest validate transactions and consume a lot of computational power, the proof of authority algorithm can use a number of secret keys, called authorities, to create the longest chain.

A broadcast is a transmission in a computer network in which data packets are transmitted by a participant of the computer network to all participants of the computer network. A broadcast packet reaches all participants of a computer network without explicitly being specified as the recipient.

Only when the message is validated can a transaction be executed. Since, in principle, the message can be validated by all the authorization nodes, the execution of a transaction via a block-based computer network represents a particularly secure execution of the transaction.

In a preferred embodiment of the invention, the input interface is set up, conditions for services of an information service provider, in particular conditions on user charges, preferably a road user fee, and / or for services of a service provider, in particular conditions on leasing fees, preferably on parking fees, fuel charges, charging station for the Terminal and / or conditions of insurance and / or conditions on user charges, preferably on charges of a sharing of the terminal to obtain.

Road tolls are in particular tolls that apply to certain roads. With charges of a shared use, the holder of the terminal can make his terminal available to other participants. In particular, in a vehicle of the holder is thus a car sharing possible. This makes it possible to prepare for the holder of a terminal transactions for various services. In particular, insurance can also be taken out.

Advantageously, the transaction device is a mobile terminal, for example a mobile device.

In one development of the invention, the transaction device has a communication interface which is designed to receive data of the terminal and / or data of the service provider, preferably telematics data, control device data and / or actuator data. Thus, the service provider can access control devices of the terminal. In particular, it may be used, for example, to open a door, a window and / or a tank lid of a vehicle by a service provider who fulfills the corresponding conditions of the holder for opening a door.

The intelligent contract according to the invention for preparing and / or executing transactions between a terminal of a terminal and a service provider contains conditions of the service provider for services of an information service provider, in particular conditions on user charges, preferably a toll, and / or services of a service provider, in particular conditions on leasing fees , preferably via parking fees, fuel charges, charging station charges for the terminal and / or conditions of insurance and / or conditions of user charges, preferably over charges of sharing the terminal for providing and / or canceling for a service and / or the keeper for this terminal defines conditions for acceptance and / or termination of the service, the intelligent contract being in an authorization node of a block-based computer network.

The use of an intelligent contract makes the written fixing of the contract superfluous. Contractual clauses relating to special arrangements, contract conclusion, default risks, performance description and / or similar become self-executable and / or self-enforceable.

In a further development of the invention, the transaction device is designed to execute an intelligent contract, preferably a smart contract according to the invention, of the service provider who fulfills the conditions of the service provider for the service, wherein the terminal has an intelligent contract, preferably an intelligent one according to the invention Contract, which contains the conditions for acceptance of the service defined by the holder for this terminal, wherein the generated message includes a destination address of at least the intelligent contract of the service provider. In particular, the holder has the option of setting up an intelligent contract for each of his terminals, with which they can enter into an intelligent contract with a respective service provider without the owner's involvement.

Preferably, the transaction device is designed to inform the holder of the termination condition that has occurred and / or a decision by the owner to continue or to terminate an abort condition defined in the intelligent contract of the service provider or in the intelligent contract of the terminal Request termination of the service. Thus, the holder can be informed, for example, after a defined time, if further actions are necessary.

For example, a gas station as a service provider can offer the service refueling up to a maximum value of 80 €. In the intelligent contract of the vehicle of the owner, which is to be refueled at this gas station, the condition is formulated that is to be refueled until the tank container is completely filled. If the tank container is already completely filled with a tank volume of 56 €, the refueling service can be stopped prematurely even though the maximum value of 80 € is not reached. Preferably, the transaction device is adapted to prepare a money transfer between the holder and a service provider, wherein preferably the terminal is a vehicle. This allows for indirect payment. Payment is made indirectly via the terminal of the owner. The owner will be asked to pay.

The inventive method for a terminal of a holder for preparing transactions between the holder and a service provider in a block-based computer network comprises the following method steps:

Obtaining conditions of the service provider for a service and a destination address of that service provider,

in accordance with a comparison of conditions defined by the holder for this terminal for an acceptance of the service with the conditions of the service provider, calculate a transaction amount for this service,

generating a message including said conditions defined by the holder for that terminal, the transaction level, the service and the destination address of the service provider, and

- provide this message to the holder.

The method according to the invention advantageously makes it easy to pay indirectly for the holder of the terminal.

Preferably, a transaction device according to the invention is used to carry out the method.

The computer program according to the invention is designed to be loaded into a memory of a computer. The computer program product comprises software code sections with which the steps of the method according to the invention for preparing transactions are executed when the computer program product is running on the computer. The technical problem of preparing transactions in a blockchain-based computer network is due to the Computer program product technically solved by providing a message for the holder, which includes, among other things, the transaction amount.

Computer program products typically include a sequence of instructions that cause the hardware, when the program is loaded, to perform a particular procedure that results in a particular result. When the program in question is used on a computer, the computer program product causes a technical effect, namely, receiving a message to prepare a transaction between the holder and the service provider.

A memory is a medium for backing up data.

Software is a collective term for programs and related data. The complement to software is hardware. Hardware refers to the mechanical and electronic alignment of a data processing system.

The terminal device according to the invention with a transaction device according to the invention has a terminal output interface which is designed to provide the service provider conditions to be accepted by the holder for this terminal for accepting a service, a terminal input interface adapted to receive conditions from service providers for that service the terminal is configured to select a service provider in response to a comparison of the conditions of the service providers with the conditions for acceptance of the service defined by the holder for that terminal. This means that the choice of which service provider is used is up to the terminal. In particular, the basis for deciding why a service is to be settled in a defined transaction amount lies with the terminal that accepts the service.

The terminal is preferably designed to select a service provider as a function of a priority list of service providers, preferably stored in an intelligent contract of the terminal. For example, in a smart contract of the owner's vehicle to be defined that this vehicle should only refuel at certain gas stations. Thus, the terminal selects only the gas stations, which has predefined the holder for this vehicle.

The inventive transaction system for a terminal of a keeper for carrying out transactions between the keeper and a service provider in a blockchain-based computer network comprises a wallet program for obtaining a customer node in the computer network for the keeper when the wallet program is opened a computer is running. Furthermore, the transaction system has a transaction device, which is another customer node in the computer network, and which is executed, depending on a comparison of conditions defined by the holder for that terminal for acceptance of a service with the conditions of the service provider of a transaction level for that service compute to generate a message containing these conditions defined by the holder, the transaction level, the service and a destination address of the service provider and to provide this message, preferably as broadcast, to nodes of the computer network. Furthermore, the transaction system has authorization means which are authorization nodes in the computer network and which are designed to validate this message by means of the blockchain, the transaction for the service being performed by the holder with the wallet program in dependence on this validated message.

A Wallet program is a computer program whose execution provides a personal digital wallet in the digital currency. The Wallet program creates a customer node on a computer network. The Wallet program is also called eWallet.

After it is confirmed by the authorization nodes that it is an authorized forwarding of the transaction amount, the holder pays for his terminal at the service provider. The service provider then provides the service to the terminal. In a further development of the invention, the transaction system is executed, the comparison of conditions defined by the holder for this terminal for acceptance of the service with the conditions of the service provider in dependence on a smart contract, preferably a smart contract according to the invention, the service provider and a smart contract, preferably an intelligent contract according to the invention, of the terminal, wherein the message includes a destination address of at least the intelligent contract of the service provider. This is particularly advantageous if the holder has set up an intelligent contract for several terminals, which he manages via the Wallet program. This allows the holder to pay for each of his devices indirectly.

Preferably, the transaction device is designed to inform the holder of the termination condition that has occurred and / or a decision by the owner to continue or to terminate an abort condition defined in the intelligent contract of the service provider or in the intelligent contract of the terminal Termination of the service, whereby the Wallet program is designed to terminate the service. As a contracting party, the holder can then forward information to the service provider in order to complete the service process. If a service process, for which the holder has paid in advance in full, terminates prematurely prior to the fulfillment of the service associated with the payment, the restorers may be remitted by the service provider for a balance.

The wallet program is preferably designed to receive the additional customer node for the transaction device.

Advantageously, the wallet program can be executed on a mobile terminal of the holder, wherein preferably the wallet program is a mobile application software, a so-called app. This provides an app for a transaction system according to the invention. In a development of the invention, the wallet program is executed for each terminal of the holder to carry out transactions for respective services depending on each validated messages depending on each terminal specific intelligent contracts, preferably of each terminal specific intelligent contracts according to the invention. This allows the holder with the Wallet program, in particular for a fleet of vehicles pay indirectly by executing transactions.

In a particularly advantageous embodiment of the transaction system according to the invention, the transactions are prepared with a transaction device according to the invention.

The inventive method for a terminal of a holder for carrying out transactions between the holder and a service provider in a block-based computer network comprises the following method steps:

Obtaining a client node for the holder in the computer network through a wallet program when the wallet program is run on a computer,

Formation of another customer node in the computer network by a transaction device,

in accordance with a comparison of conditions defined by the holder for this terminal for acceptance of a service with the conditions of the service provider, calculate a transaction amount for this service by means of the transaction device,

generate a message with the transaction device that defines these conditions defined by the holder, the transaction amount, the service and a

Destination address of the service provider includes,

provide this message, preferably as a broadcast, for nodes of the computer network,

- Validate this message using this blockchain by authorization nodes in the computer network and

- settle the service by the holder with the wallet program depending on this validated message. This method makes it particularly easy to pay for transactions indirectly.

Preferably, a transaction system according to the invention is used to carry out the method.

The further computer program product according to the invention is designed to be loaded into a memory of a computer and has software code sections with which the steps of the method according to the invention for executing transactions are executed when the computer program product is running on the computer. The technical problem of performing transactions in a blockchain-based computer network is technically solved by the computer program product, inter alia, by providing a message to the holder which, inter alia, includes the transaction level and validating that message.

The invention will be described in detail in the following figures. Show it:

FIG. 1 shows an embodiment of a transaction device according to the invention,

FIG. 2 shows an exemplary embodiment of a blockchain,

Figure 3: an embodiment of a method according to the invention for

Preparing a transaction,

FIG. 4 shows an exemplary embodiment of a terminal according to the invention,

FIG. 5 shows an embodiment of the computer program products according to the invention,

Figure 6: an embodiment of a transaction system according to the invention, and

Figure 7: an embodiment of a method according to the invention for

Execute a transaction. In the figures, like reference numerals designate like or functionally similar reference parts. In the respective figures, only the respective relevant reference parts are numbered.

In Fig. 1, the terminal 1 of a holder 2 is a vehicle of the holder 2. The holder 2 in Fig. 1 is a natural person. The holder 2 may also have a fleet of multiple terminals 1. The following statements are thus transferable to each terminal 1, a vehicle fleet of the holder 2.

The terminal 1 accepts a service 4 of a service provider 3. The service 4 is to provide a parking space on a parking lot enclosed by a barrier of a car park manager. The service provider 3 is the car park manager.

To accept the service 4 and to prepare a transaction, the terminal 1 has a transaction device 10. The transaction device 10 has an input interface 11. Via the input interface 1 1, the transaction device 10 receives conditions of the service provider 3 for the service 4 of parking, for example, a parking fee per unit time, and a destination address 5 of this service provider 3. The destination address 5 is the so-called destination address, identified by the service provider 3 can be. The destination address 5 can be generated, for example, with the transaction device 10, in which an asymmetrical cryptographic key pair consisting of a public key and a private key is generated. Forming a hash value from the public key then generates a destination address.

In FIG. 1, the transaction is prepared by means of an intelligent contract 25 between the service provider 3 and the terminal 1. The service provider 3 receives the conditions defined in the intelligent contract 25 by the keeper 2 of the terminal 1 for acceptance of this service 4. Upon receiving these conditions, the service provider 3 sends the conditions for its service 4 to the terminal 1. The transaction device I O compares then the conditions defined by the holder 2 for this terminal 1 for acceptance of the service 4 with the conditions of the service provider 3 to calculate a transaction level for this service 4 and to generate a message 13 from the holder 2 for that terminal 1 defined conditions, the transaction level, the service 4 and the destination address 5 of the service provider 3 includes. This message 13 is provided to the holder 2 via an output interface of the transaction device 10. The intelligent contract 25 and the message 13 are executed in a computer network 21 based on a blockchain 20.

The transaction device 10 is a customer node 23 of the computer network 21. The computer network 21 consists of a plurality of nodes 22, each node 22 being equivalently connected to each other node 22 of the computer network 21. The customer node 23 generates the message 13 and sends it to the other nodes 22 of the computer network 21. Among other things, the message is sent to authorization nodes 24 of the computer network 21. Authorization nodes 24 validate message 13 for a particular consensus algorithm, such as the proof of work algorithm. In this context, an authorization node 24 is also referred to as a mining node or mining node. The validated message 13 is inserted in a new block 27 of the blockchain 20.

FIG. 2 illustrates the generation of new blocks in a blockchain 20. A first block 271 of the blockchain 20 has been created by a first authorization node 241. The first authorization node 241 has generated a first hash value 272 for the first block 271. The first hash value 272 identifies the first block 271 in block chain 20. The second block 273 of the block chain 20 generated by the second authorization node 242 is identified by the second hash value 274 and references the first block 271 by passing the first hash value 272 from the first block 271 to the second block 273. The third block 275 is generated by the authorization node 243 and referenced the second block 273 by the transfer of the second hash value 274 from the second block 273 to the third block 275 referenced to the previous block 273. The hash value is the function value of a hash function. Hash functions reduce characters of arbitrary length to fixed-length characters. The hash function can be used to create characters of any length in a more compact form. The hash value can be encoded as a hexadecimal string. The hash value should be chosen so that it is not possible to produce the original content from it. In addition, different input characters should not be assigned the same hash value.

The authorization node 24, which has validated the message 13 and has inserted this into a further block 27 of the block chain 20, transfers the validated message to a further customer node 23, via which the validated message 13 is made available to the holder 2.

In FIG. 3, conditions of the service provider 3 for a service 4 and a destination address 5 of the service provider 3 are obtained by means of intelligent contracts 25. An intelligent contract 25 is executed between the terminal 1 and the service provider 3. Depending on a comparison of the conditions defined by the holder 2 for this terminal 1 for acceptance of the service 4 with the conditions of the service provider 3, a corresponding transaction amount for this service 4 is calculated. Subsequently, a message 13 is generated, which contains these conditions defined by the holder 2 for this terminal 1, the transaction level, the service 4 and the destination address 5 of the service provider 3. Subsequently, this message 13 is provided for the holder 2 of the terminal 1.

FIG. 4 shows a terminal 1 in the form of a vehicle having a terminal input interface 7 and a terminal output interface 6. The terminal 1 is assigned an intelligent contract 25 which includes conditions for accepting a service 4 defined by the keeper 2 of this vehicle 1. Via the terminal input interface 7, the terminal 1 receives conditions for services 4 of service providers 3, these conditions being contained in intelligent contracts 25 of the service providers 3. The terminal 1 is implemented as a function of a comparison of the conditions of service provision. tern 3 with the conditions defined by the holder 2 for this terminal 1 for accepting the service 4 to select a service provider 3. In particular, the intelligent contract 25 of the terminal 1 stores a priority list of service providers 3, from which the terminal 1 can select a service provider 3. In FIG. 4, the intelligent contract 25 of the terminal 1 contains a priority list for charging stations, in particular electrical charging stations, for the terminal 1. By means of the intelligent contract 25 of the terminal 1 and a corresponding intelligent contract 25 of a service provider 3, the vehicle can thus select the service provider 3 that most satisfies the conditions of the holder 2.

FIG. 5 shows a computer program 30 for carrying out the method for preparing a transaction and a computer program product 50 for executing a transaction. The computer program products 30 and 50 are loaded into a memory 31 of a computer 32.

In FIG. 6, the holder 2 of a terminal 1 has a wallet program 41. With this wallet program 41, the holder 2 can carry out intelligent contracts 25 for terminals 1 and pay a corresponding transaction amount to the service provider 3 for a selected intelligent contract 25. The transaction system 40 comprises as essential components the wallet program 41 of the holder 2, the intelligent contract 25 of the terminal 1 and a service provider 3 and a blockchain 20 based computer network 21. In this computer network 21, the transaction device 10 forms a customer node. An authorization device 42 is an authorization node 24 for validating the message 13. The wallet program 41 forms another customer node 23, via which the holder 2 receives the validated message and can settle the transaction amount.

Figure 7 shows the method for carrying out a transaction between the holder 2 and a service provider 3 in a blockchain 20-based computer network 21. First, a customer node 23 for the holder 2 in the computer network 21 is obtained by a wallet program 41 when the Wallet Program 41 is executed on a computer 31. Subsequently, another customer node 23 is formed in the computer network by a transaction device 10. Depending on a comparison of conditions defined by the holder 2 for this terminal 1 for acceptance of a service with the conditions of the service provider 3, a transaction level for this service 4 is calculated by means of the transaction device 10. Subsequently, a message 13 is generated with the transaction device 10. This message includes the conditions defined by the holder 2, the transaction level, the service 4 and a destination address 5 of the service provider. This message is then provided by means of a broadcast 28 for node 22 of the computer network 21 and validated by means of the block chain 20 by authorization node 24 in the computer network 21. Finally, the service 4 is paid by the holder 2 with the wallet program 41 as a function of this validated message 13.

Tag terminal

holder

Service providers

service

destination address

Terminal output interface

Terminal input interface

transaction device

Input interface

Output interface

message

Communication Interface

block Chain

Computer network

node

customer nodes

authoring node

first authorization node

second authorization node

third authorization node

smart contract

destination address

block

first block

first hash value

second block

second hash value

third block

broadcast

A computer program product

Storage computer

transaction system

Wallet Program

Authorization device computer program product

Claims

claims

A transaction device (10) for a terminal (1) of a holder (2) for preparing transactions between the holder (2) and a service provider (3)

- an input interface (11), which is designed to receive conditions of the service provider (3) for a service (4) and a destination address (5) of this service provider (3), wherein

- The transaction device (10) is executed to execute a computer program having software code sections to

o to calculate a transaction amount for this service (4) in accordance with a condition defined by the holder (2) for this terminal (1) for acceptance of the service (4) with the conditions of the service provider (3);

o to generate a message (13) containing at least the transaction level, the service (4) and the destination address (5) of the service provider (3),

and

- An output interface (12) which is designed to provide this message (13) for the holder (2).

A transaction device (10) according to claim 1, characterized in that the transaction device (10) is a client node (23) of a blockchain (20) based computer network (21).

Transaction device (10) according to claim 1 or 2, characterized in that the transaction device (10) is implemented, the message (13) for nodes (22) of a block chain (20) based computer network (21), preferably as a broadcast (28), wherein authorization nodes (24) of the computer network (21) are adapted to validate this message (13) using the block chain (20) and to provide that validated message (13) to the holder (2).

4. Transaction device (10) according to one of the preceding claims, characterized in that the input interface (11) is executed, conditions for services (4) of an information service provider (3), in particular conditions on user charges, preferably a toll, and / or for services (4) a service provider (3), in particular conditions of lease fees, preferably on parking fees, fuel charges, charging station charges for the terminal (1) and / or insurance conditions and / or conditions of use charges, preferably on charges of sharing the terminal (1).

5. Transaction device (10) according to one of the preceding claims, characterized in that the transaction device (10) is a mobile terminal.

6. Transaction device (10) according to any one of the preceding claims, characterized in that the transaction device (10) has a communication interface (14) which is executed, data of the terminal (1) and / or data of the service provider (3), preferably telematics Data, ECU data, actuator data, to obtain.

An intelligent contract (25) for preparing and / or executing transactions between a holder (2) of a terminal (1) and a service provider (3),

- wherein the intelligent contract (25) conditions of the service provider (3) for services (4) of an information service provider (3), in particular conditions on user charges, preferably a toll, and / or services (4) of a service provider (3), in particular conditions on leasing charges, preferably on parking fees, fuel charges, charging station charges for the terminal (1) and / or conditions of insurance and / or conditions of user charges, preferably on charges of sharing the terminal (1) for providing and / or canceling for one Service (4) and / or Conditions defined by the holder (2) for this terminal (1) for accepting and / or terminating the service (4)

wherein the intelligent contract (25) is executed in an authorization node (24) of a blockchain (20) based computer network (21).

Transaction device (10) according to one of the preceding claims, characterized in that the transaction device (10) is designed to calculate the transaction amount of an intelligent contract (25), preferably an intelligent contract (25) according to claim 7, of the service provider (3 ), which contains the conditions of the service provider (3) for the service (4), the terminal (1) having a smart contract (25), preferably a smart contract (25) according to claim 7, which comprises the Holder (2) for this terminal (1) defined conditions for acceptance of the service (4), wherein the generated message (13) includes a destination address (26) at least the intelligent contract (25) of the service provider (3).

A transaction device (10) according to claim 7, characterized in that the transaction device (10) is executed upon the occurrence of a canceling condition defined in the intelligent contract (25) of the service provider or in the intelligent contract (25) of the terminal service (4) to inform the holder (2) of the termination condition that has occurred and / or to request a decision of the keeper (2) to continue or terminate the service (4).

10. Transaction device (10) according to one of the preceding claims, characterized in that the transaction device (10) is designed to prepare a money transfer between the holder (2) and a service provider (3), wherein preferably the terminal (1) is a vehicle ,

A method for a terminal (1) of a holder (2) for preparing transactions between the holder (2) and a service provider (3) in a blockchain (20) -based computer network (21), comprising the following method steps: Obtaining conditions of the service provider (3) for a service (4) and a destination address (5) of this service provider (3),

- conditional on a comparison of the holder (2) for this terminal (1) defined conditions for acceptance of the service (4) with the conditions of the service provider (3) calculate a transaction amount for this service (4),

generating a message (13) containing said conditions defined by said holder (2) for said terminal (1), the transaction height, the service (4) and the destination address (5) of the service provider (3), and

- Provide this message (13) for the holder (1).

12. The method according to claim 11, characterized in that for carrying out the method, a transaction device (10) according to one of claims 1 to 6 or 8 to 10 is used.

A computer program product (30) adapted to be loaded into a memory (32) of a computer (31) and having software code portions by which the steps of the method of claim 11 or 12 are executed when the computer program product (30) on the computer (31) is running.

14. Terminal (1) with a transaction device (10) according to one of claims 1 to 6 or 8 to 10 and with

a terminal output interface (6) designed to provide the conditions for acceptance of a service (4) defined by the holder (2) for this terminal (1) to service providers (3),

a terminal input interface (7) designed to receive conditions from service providers (3) for this service (4),

- wherein the terminal (1) is designed, depending on a comparison of the conditions of the service providers (3) with the conditions defined by the holder (2) for this terminal (1) for accepting the service (4) a service provider (3) select.

15. Terminal (1) according to claim 14, characterized in that the terminal (1) is executed, depending on a, preferably in a smart contract (25) of the terminal (1) stored priority list of service providers (3) a service provider ( 3).

A transaction system (40) for a terminal (1) of a holder (2) for carrying out transactions between the holder (2) and a service provider (3) in a blockchain (20) based computer network (21)

a wallet program (41) for receiving a client node (23) in the computer network (21) for the holder (2) when the wallet program (41) is executed on a computer (31),

a transaction device (10) which is another customer node (23) in the computer network (21) and which is executed

o to calculate a transaction amount for this service (4) in accordance with a condition defined by the holder (2) for this terminal (1) for accepting a service (4) with the conditions of the service provider (3),

o to generate a message (13) containing these conditions defined by the holder (2), the transaction height, the service (4) and a destination address (5) of the service provider (3), and

o provide this message (13), preferably as a broadcast (28), to nodes (22) of the computer network (21),

Authorization devices (42) which are authorization nodes (24) in the computer network (21) and which are designed to validate this message (13) by means of the block chain (20), wherein

- The transaction for the service (4) by the holder (2) with the wallet program (41) in response to this validated message (13).

17. transaction system (40) according to claim 16, characterized in that the transaction system (40) is executed, the comparison of the holder (2) for this terminal (1) defined conditions for acceptance of the service (4) with the conditions of Service provider (3) in dependence on a smart contract (25), preferably a smart contract (25) according to claim 7, of the service provider (3) and an intelligent contract (25), preferably an intelligent contract (25) according to claim 7, of the terminal (1), the message (13) having a destination address (26) of at least the intelligent contract (25) of the Service Provider (3).

Transaction system (40) according to claim 16 or 17, characterized in that the transaction device (10) is executed upon the occurrence of a termination condition defined in the intelligent contract (25) of the service provider or in the intelligent contract (25) of the terminal Canceling an accepted service (4) informing the keeper (2) of the occurred termination condition and / or requesting a decision of the keeper (2) to continue or terminate the service (4), the wallet program (41) being executed is to end the service (4).

19. transaction system (40) according to any one of claims 16 to 18, characterized in that the wallet program is adapted to receive the further customer node (23) for the transaction device (10).

20. transaction system (40) according to any one of claims 16 to 19, characterized in that the wallet program (41) on a mobile terminal (42) of the holder (2) is executable, preferably the wallet program (41) a mobile application software is.

The transaction system (40) according to any one of claims 16 to 20, characterized in that the wallet program (41) is executed for a plurality of terminals (1) of the holder (2) respectively for respective services (4) depending on respectively validated messages (13) in response to respective terminal (1) specific intelligent contracts (25), preferably of each terminal (1) specific intelligent contracts (25) according to claim 7.

Transaction system (40) according to one of Claims 16 to 21, characterized in that the transactions are prepared with a transaction device (10) according to one of Claims 1 to 6 or 8 to 10.

Method for a terminal (1) of a holder (2) for carrying out transactions between the holder (2) and a service provider (3) in a blockchain (20) -based computer network (21) comprising the following method steps:

- receiving a client node (23) for the holder (2) in the computer network (21) by a wallet program (41) when the wallet program (41) is executed on a computer (31),

Forming a further customer node (23) in the computer network (21) by a transaction device (10),

- conditional on a comparison of the holder (2) for this terminal (1) defined conditions for acceptance of a service (4) with the conditions of the service provider (3) calculate a transaction amount for this service (4) by means of the transaction device (10) .

generating a message (13) with the transaction device (10) containing said conditions defined by the holder (2), the transaction amount, the service (4) and a destination address (5) of the service provider (3),

providing this message (13), preferably as a broadcast (28), for nodes (22) of the computer network (21),

validate this message (13) by means of the block chain (20) by authorization nodes (24) in the computer network (21) and

- settle the service (4) by the keeper (2) with the wallet program (41) in response to this validated message (13).

24. The method according to claim 23, characterized in that for carrying out the method, a transaction system (40) according to any one of claims 16 to 22 is used.

A computer program product (50) adapted to be loaded into a memory (32) of a computer (31) and having software code portions by which the steps of the method of claim 23 or 24 are carried out when the computer program product (50) on the computer (31) is running.