Abstract: An access method is described, as well as an access control method implemented by an access application and an access control application registered in a blockchain. The access control application may be subscribed to the events published by the access application. Upon receipt of an access request, the access application publishes in the blockchain, a request to verify a right for the access. It receives a response to the verification request, a response determined by the access control application based on an access control policy defined by this access control application and processes the access request based on this response.

Abstract: A method for delegating access to a blockchain. The method is carried out by an access delegation device and includes: receiving an execution request from a terminal, including at least one identifier of a user and at least one command to execute an action within the blockchain, the command being encrypted via at least one encryption key belonging to the user; obtaining, according to the at least one identifier of the received user, at least one decryption key of the user for decrypting the execution command; decrypting the execution command; and sending, to the blockchain, a request for executing the decrypted execution command via the at least one decryption key.

Abstract: The present invention relates to a clear coating composition comprising a perlite, wherein the median particle size, d50, of the perlite is in the range of 0.5 and 25 ?m, a method of making clear coating compositions and their use in coating an article or substrate.

Abstract: A method for controlling access to a function of an application implemented by a device for controlling access to a function of an application. The control device is registered to a blockchain. The method includes: of receiving, from a first terminal, a first request to access at least one first function of the application, the application being registered in the blockchain, the request including at least one first identifier of the at least one first function and at least one identifier of the first terminal; and transmitting a response to the access request including at least one parameter for accessing the at least one first function and at least one second identifier of at least one second function registered in the blockchain, the at least one second identifier being associated with the at least one parameter.

Abstract: A method for authenticating a user with at least one service application, the user being equipped with a user device that has at least one address and is able to obtain at least one authentication datum for the user. The method is implemented by the user device and includes: receiving, from the service application, a request comprising an identifier of the user; sending, to an application registered in a blockchain, a request comprising the identifier of the user; receiving, in response to the sending, a message comprising at least one first datum corresponding to a first address of the user device, the at least one first datum having been obtained on the basis of the identifier of the user; and sending, to the first address, a request to send a message comprising the at least one authentication datum for the user to an address of the service application.

Abstract: The present invention relates to a clear coating composition comprising a perlite, wherein the median particle size, d50, of the perlite is in the range of 0.5 and 25 ?m, a method of making clear coating compositions and their use in coating an article or substrate.

Abstract: TiO2-free coating compositions and mineral blends for use in TiO2-free coating compositions.

Abstract: A method is described for proving knowledge of a first data item by a user registered to a blockchain, the first data item belonging to the user, the method being implemented by a trusted entity registered on the blockchain. The method includes obtaining the first data item outside the blockchain, generating a second data item from the first data item, outside the blockchain, the second data item to the user, and publishing the second data item in the blockchain after the second data item has been published in the blockchain by a terminal of the user.

Abstract: A method for access by a communication device to a network connectivity provided by a third party via an operator network. The method includes: sending, to a management device, a request for attachment to the operator network, including an identifier of the third-party; receiving, from the management device, a message containing contact information of a software control gateway controlling access to a network slice allocated by the operator to the third party and associated with the third party identifier, the contact information including a reachability address of the software control gateway or an identifier of the network slice to which access is controlled by the software control gateway, the message inviting the communication device to attach to the software control gateway; requesting attachment to the software control gateway using the contact information; and accessing to the network connectivity via the slice of the operator network allocated to the third party.

Abstract: A payment method implemented by a payment device and including: receiving a first request intended for a computer program, referred to as smart contract, recorded on a blockchain, the first request including at least one electronic token associated with at least one parameter; sending the at least one parameter in response to a second request originating from a service application; and issuing the at least one token in response to a third request originating from the service application.

Abstract: A method is described for negotiating a contract between two parties in a telecommunications network, as well as devices implementing the method. The method includes distributing, by a first party, a smart contract comprising: a subscription method allowing a second party to distribute a transaction for subscribing to the contract proposal, a method for generating a personalised contract between the parties and requesting their registration in the blockchain, the personalised contract being generated on the basis of parameters included in the transaction, executing the subscription method by a terminal of the second party, the execution triggering the distribution of a transaction comprising parameters representing the acceptance of the contract proposal by the second party, and executing, by a mining device, the method for generating a personalised contract with these parameters.

Abstract: A communication device associated with a transmitting entity and including: a first transmitting/receiving module capable of receiving, from the transmitting entity, a query formulated in a predetermined computer language or in a predetermined natural language; a translation module, activated if the query is formulated in the predetermined computer language, and configured to translate the query into the predetermined natural language; an extraction module configured to extract from the query formulated in the predetermined natural language at least one keyword representing the query; an identification module configured to identify, using the at least one keyword extracted, a target device supporting the predetermined natural language towards which to transmit the query; and a second transmitting/receiving module configured to transmit the query formulated in the natural language to the target device.

Abstract: A method for delegating access to a blockchain. The method is carried out by an access delegation device and includes: receiving an execution request from a terminal, including at least one identifier of a user and at least one command to execute an action within the blockchain, the command being encrypted via at least one encryption key belonging to the user; obtaining, according to the at least one identifier of the received user, at least one decryption key of the user for decrypting the execution command; decrypting the execution command; and sending, to the blockchain, a request for executing the decrypted execution command via the at least one decryption key.

Abstract: A method for access by a communication device to a network connectivity provided by a third party via an operator network. The method includes: sending, to a management device, a request for attachment to the operator network, including an identifier of the third-party; receiving, from the management device, a message containing contact information of a software control gateway controlling access to a network slice allocated by the operator to the third party and associated with the third party identifier, the contact information including a reachability address of the software control gateway or an identifier of the network slice to which access is controlled by the software control gateway, the message inviting the communication device to attach to the software control gateway; requesting attachment to the software control gateway using the contact information; and accessing to the network connectivity via the slice of the operator network allocated to the third party.

Abstract: A management method that allows a communication device to benefit from a network connectivity provided by a third party via the operator network. The method includes: receiving, from the communication device, a request for attachment to the operator network and an identifier of the third party; obtaining, using the identifier of the third party, contact information of a software control gateway instantiated for controlling access to a network slice allocated by the operator to the third party, this contact information including a reachability address of the software control gateway or an identifier of the network slice allocated to the third party and access to which is controlled by the software control gateway; and sending a message to the device containing the contact information and inviting the communication device to attach to the software control gateway using this contact information.

Abstract: A method for determining an authorization to implement a composite resource, the composite resource including at least two resources. The method is implemented within a blockchain and includes: receiving by a smart contract, called a composite contract, a query from a requesting entity desiring to obtain an authorization to implement the composite resource; obtaining, by the composite contract, addresses of smart contracts within a blockchain, the smart contracts being associated with resources included in the composite resource; and, for each smart contract: transmitting a query for authorization to implement the resource associated with this smart contract; receiving a result provided by this smart contract; and compiling results coming from a smart contract delivering a result representative of the authorization to implement the composite resource.

Abstract: A method for controlling access to a function of an application implemented by a device for controlling access to a function of an application. The control device is registered to a blockchain. The method includes: of receiving, from a first terminal, a first request to access at least one first function of the application, the application being registered in the blockchain, the request including at least one first identifier of the at least one first function and at least one identifier of the first terminal; and transmitting a response to the access request including at least one parameter for accessing the at least one first function and at least one second identifier of at least one second function registered in the blockchain, the at least one second identifier being associated with the at least one parameter.

Abstract: A method for authenticating a user with at least one service application, the user being equipped with a user device that has at least one address and is able to obtain at least one authentication datum for the user. The method is implemented by the user device and includes: receiving, from the service application, a request comprising an identifier of the user; sending, to an application registered in a blockchain, a request comprising the identifier of the user; receiving, in response to the sending, a message comprising at least one first datum corresponding to a first address of the user device, the at least one first datum having been obtained on the basis of the identifier of the user; and sending, to the first address, a request to send a message comprising the at least one authentication datum for the user to an address of the service application.

Abstract: A method is described for negotiating a contract between two parties in a telecommunications network, as well as devices implementing the method. The method includes distributing, by a first party, a smart contract comprising: a subscription method allowing a second party to distribute a transaction for subscribing to the contract proposal, a method for generating a personalised contract between the parties and requesting their registration in the blockchain, the personalised contract being generated on the basis of parameters included in the transaction, executing the subscription method by a terminal of the second party, the execution triggering the distribution of a transaction comprising parameters representing the acceptance of the contract proposal by the second party, and executing, by a mining device, the method for generating a personalised contract with these parameters.

Abstract: A method is described for proving knowledge of a first data item by a user registered to a blockchain, the first data item belonging to the user, the method being implemented by a trusted entity registered on the blockchain. The method includes obtaining the first data item outside the blockchain, generating a second data item from the first data item, outside the blockchain, the second data item to the user, and publishing the second data item in the blockchain after the second data item has been published in the blockchain by a terminal of the user.