Abstract: Implementations of the specification include receiving transaction data associated with the transaction, the transaction data comprising: data representative of a plurality of assets, a first commitment hiding a first random number and a transaction amount of the transaction, a second commitment that hides a second random number and a change, the transaction amount and a third random number both encrypted by a public key of the second node, the change and a fourth random number both encrypted by a public key of the first node, and a zero-knowledge proof (ZKP); determining, based on the ZKP, whether the transaction is valid based on determining if the first random number is equal to the third random number, the second random number is equal to the fourth random number, and the transaction amount hidden in the first commitment is equal to the transaction amount encrypted by the public key of the second node.

Abstract: Implementations of the present specification include receiving, by a blockchain node in the blockchain network, a request to read a particular block of the blockchain, wherein the request is received from a light-weight node of the blockchain network and includes an identity of the light-weight node, and wherein the particular block includes an original Merkle tree associated with the particular block; identifying, by the blockchain node, permissions associated with the identity of the light-weight node; generating, by the blockchain node, an isolated Merkle tree based on the original Merkle tree included in the block, the isolated Merkle tree including only transactions from the original Merkle tree that are determined to be accessible by the light-weight node based on the identified permissions, wherein the isolated Merkle tree is consistent with the original Merkle tree; and sending, by the blockchain node, a response to the light-weight node including the isolated Merkle tree.

Abstract: A computer-implemented method comprises: committing a transaction amount of a transaction with a commitment scheme to obtain a transaction commitment value, the commitment scheme comprising at least a transaction blinding factor; generating a first key of a symmetric key pair; encrypting a combination of the transaction blinding factor and the transaction amount t with the first key; and transmitting the transaction commitment value T and the encrypted combination to a recipient node associated with a recipient of the transaction for the recipient node to verify the transaction.

Abstract: Implementations of the present disclosure include obtaining, by a first consensus node, a policy of a workflow for sending transaction data between at least two client nodes. The policy is digitally signed by each of the at least two client nodes using a corresponding private key, and the policy includes a routing order of the transaction data between the at least two client nodes. The first consensus node also receives the transaction data submitted by a first of the at least two client nodes. The transaction data is digitally signed by a private key of the first of the at least two client nodes.

Abstract: Implementations of the present disclosure include receiving, by a consensus node from a first account, a digitally signed copy of a commitment value of a transaction amount, a second random number encrypted using a public key of the first account, a third random number encrypted using a public key of the second account, one or more range proofs, and a set of values generated based on one or more selected random numbers. The consensus node then verifies a digital signature corresponding to the digitally signed copy using a public key of the first account corresponding to a private key used to generate the digital signature. It also updates the balance of the first account and a balance of the second account based on the amount of the balance transfer if the first random number, the second random number, and the third random number are the same.

Abstract: Implementations of the present disclosure include receiving, from a first account, a digitally signed copy of a plurality of notes, a commitment of a transaction amount of a transaction between the first account and a second account paid by at least a portion of the plurality of notes, a commitment of a change from deducting the transaction amount from a total value of the plurality of notes, and a zero-knowledge proof generated based on one or more selected random numbers. The first account determines that the total value of the plurality of notes equals the sum of the transaction amount and the change, validates the transaction, and updates the first account and the second account based on the plurality of notes, the transaction amount, and the change.

Abstract: Implementations of the present disclosure include receiving, from a first account, a digitally signed copy of a commitment value of a first amount of a transaction amount generated based on a first random number, the first amount of the balance transfer and the first random number encrypted using a public key of the first account, a second amount of the balance transfer and a second random number encrypted using a public key of the second account, and a set of values generated based on one or more selected random numbers. The first account determines if the first amount and the second amount are the same and if the first random number and the second random number are the same based on the set of values, and updates the balance of the first account and a balance of the second account based on the first amount of the balance transfer.

Abstract: Implementations of the present disclosure include receiving, by a consensus node of a blockchain, transaction data and a digital signature of the transaction data. The transaction data includes a commitment value, a random number, and a transaction amount to be transferred from one of a public account or a private account of the first user node to one of a public account or a private account of a second user node. The consensus node verifies the digital signature of the transaction data using a public key of the first user node. It then determines that the transaction amount is valid, if the commitment value is correct based on the random number and the commitment scheme, and the transaction amount is less than or equal to a balance of the one of the public account or the private account of the first user node before transfer of the transaction amount.

Abstract: The present application relates to a large-size, high-dielectric breakdown strength titanium oxide based dielectric ceramic material, a preparation method and application thereof. The composition of the titanium oxide based dielectric ceramic material comprises: a CaTiO3+b SrTiO3+c TiO2+d Al2TiO5+e SiO2, wherein a, b, c, d, and e are the mole percentage of each component, 15?a?35 mol %, 0?b?2 mol %, 30?c?84 mol %, 0.5?d?25 mol %, 0.5?e?15 mol %, and a+b+c+d+e=100 mol %.

Abstract: An example method of operation may include one or more of identifying one or more votes in a distributed voting configuration, dividing each of the one or more votes into a plurality of partial votes, such that each of the one or more votes comprises two or more partial votes, randomly distributing the plurality of partial votes to a plurality of peer nodes associated with a blockchain, and receiving a broadcast from each of the peer nodes based on a distributed tally of the plurality of partial votes.

Abstract: The present disclosure provides a method and an apparatus for synchronous lighting control by a mobile terminal. The method comprises acquiring a loading program of each of a plurality of lamps required to be synchronously controlled; acquiring a state of each of the plurality of lamps according to the loading program; grouping the plurality of lamps according to the state of each of the plurality of lamps; and controlling a switching and a color of each of the plurality of lamps synchronously according to the grouping. A beneficial effect of the present disclosure is that by grouping the smart lamps, the smart lamps are managed in batch, and by using a colorful scene and a changing music to control a switching and a color of the smart lamps, the intelligence level of the system is improved, the control style is enriched, and the user experience is better.

Abstract: The present disclosure provides a Bluetooth WIFI gateway device prcomprising a Bluetooth module, a WIFI module electrically connected to the Bluetooth module, a switch circuit electrically connected to the WIFI module, a first voltage regulation circuit electrically connected to the Bluetooth module, and a second voltage regulation circuit electrically connected to the WIFI module and the switch circuit. The beneficial effect of the present disclosure is that the Bluetooth gateway can receive a Bluetooth signal and transmit a WIFI signal by the Bluetooth WIFI gateway device that has simple structure and low cost.

Abstract: Method and device of sharing location information in a social network application are disclosed. The method includes: a user device providing an instant messaging interface of a social network application at the user device; detecting, within the instant messaging interface, a trigger input associated with location information from a first user of the first user device; in response to the trigger input associated with location information, obtaining a map based on the trigger input; and sharing the map with a second user device through the social network application, enabling the second user device to display the map in a corresponding instant messaging interface of the social network application executed at the second user device.

Abstract: A computer-implemented method for downloading and displaying pictures associated with instant messages is performed at a computing device. The computing device displays a list of instant messages on the screen, at least one of the instant messages having an associated picture and including address information of the picture. While the picture is being downloaded, the computing device detects a user instruction to slide the list of instant messages on the screen. In response to the user instruction, the computing device pauses the download of the picture and determines, among the list of instant messages, a second instant message having an associated second picture and including address information of the second picture based on the user instruction. The computing device then downloads the second picture associated with the second instant message according to the address information without receiving a download instruction from the user of the computing device.

Abstract: A Bluetooth ceiling lamp (100) comprises: a ceiling lamp housing assembly (1); a control module (2), disposed in the ceiling lamp housing assembly (1); a Bluetooth mesh module (3), used for receiving an external control signal by means of Bluetooth and coupled to the control module (2); a light emitting unit (4), disposed in the ceiling lamp housing assembly (1); and a Bluetooth control circuit (5), used for controlling the light emitting component (2), and coupled to the control module (2) and the light emitting component (4). In the technical solution, by means of a Bluetooth wireless control technology, remote brightness adjustment, color adjustment, timing, splendid colors with music, profiles and other functions are implemented on the ceiling lamp, thereby bringing convenience to the life of the people, and increasing the variety and the enjoyment of smart home lighting.

Abstract: A Bluetooth audio ceiling light includes a mask (10) defining an opening (101) at a central axis of the mask (10); a bottom board (11) connected to the mask (10) to form an accommodating cavity; a light board (12) disposed in the accommodating cavity and in contact with an inner side of the bottom board (11); a Bluetooth audio housing (13), an upper side of the Bluetooth audio housing (13) defining an acoustic hole (131), an outer edge of the acoustic hole (131) is attached to an edge of the opening (101), and a lower side of the Bluetooth audio housing (13) is connected to the inner side of the bottom board (11). By means of the Bluetooth wireless control technology functions of ceiling light such as remote controlling the brightness of the ceiling light, adjusting the color, timing, music-controlling colors, scene modes, and so on, to facilitate people's life and increase the diversification and fun of the intelligent home lighting.

Abstract: A Bluetooth controller (100) comprises: a controller housing assembly (1); a control module (2), disposed in the controller housing assembly (1); a Bluetooth mesh module (3), used for receiving an external control signal by means of Bluetooth and coupled to the control module (2); a Bluetooth control circuit (5), used for controlling the light emitting unit and coupled to the control module (2); and a Bluetooth power supply module (4), used for supplying a direct current to the Bluetooth control circuit (5) and coupled to the Bluetooth control circuit (5). By means of a Bluetooth wireless control technology, remote brightness adjustment, color adjustment, timing, splendid colors with music, profiles and other functions are implemented by the controller, thereby bringing convenience to the life of the people, and increasing the variety and the enjoyment of smart home lighting.

Abstract: A Bluetooth bulb lamp comprises: a bulb lamp shell assembly (1); a control module (2) located inside of the bulb lamp shell assembly (1); a Bluetooth mesh module (3) used for receiving an external control signal via Bluetooth, coupled to the control module (2), and located on a surface of the bulb lamp shell assembly (1); a light-emitting unit (4) located inside of the bulb lamp shell assembly (1); a Bluetooth control circuit (5) used for controlling lighting unit, coupled to the control module (2) and the light-emitting unit (4). The beneficial effect of the Bluetooth bulb lamp of present disclosure is to realize functions of remote adjustment of brightness, adjustment of color, timing, music colors, scene mode etc., to facilitate people's life and increase diversify and interest of smart home lighting.

Abstract: The present disclosure provides a method and an apparatus for synchronous lighting control by a mobile terminal. The method comprises acquiring a loading program of each of a plurality of lamps required to be synchronously controlled; acquiring a state of each of the plurality of lamps according to the loading program; grouping the plurality of lamps according to the state of each of the plurality of lamps; and controlling a switching and a color of each of the plurality of lamps synchronously according to the grouping. A beneficial effect of the present disclosure is that by grouping the smart lamps, the smart lamps are managed in batch, and by using a colorful scene and a changing music to control a switching and a color of the smart lamps, the intelligence level of the system is improved, the control style is enriched, and the user experience is better.

Abstract: A bluetooth remote controller is disclosed in the present disclosure, comprising a remote controller housing which is provided with a plurality of openings, a circuit board disposed inside the remote controller housing, a plurality of keys disposed on the plurality of openings, a control unit disposed on the circuit board; a key circuit electrically connected to the control unit and disposed on the circuit board and abutting on the plurality of keys, a antenna for receiving a remote control signal of bluetooth, electrically connected to the control unit and disposed on the circuit board. The beneficial effects of the implementation of the present disclosure is that achieving functions such as the remote adjusting of brightness, remote adjusting of color, timing, colors changing along with music and setting profiles through bluetooth wireless control technology to facilitate people's life and increase the diversity and delight of intelligent home lighting.