Abstract: A transaction replacing method, a transaction queuing method, a device, and a storage medium. The method comprises: receiving a first transaction to be stored into a memory pool and transmitted by a client and determining, by means of whether first predecessor transaction information of the first transaction is null, whether the first transaction is a first-type transaction for replacing a predecessor transaction or a second-type transaction not for replacing a predecessor transaction (S12); if the first transaction is a first-type transaction, then querying whether the predecessor transaction of the first transaction is present in the memory pool on the basis of the first predecessor transaction information (S14); and if yes, then deleting the predecessor transaction from the memory pool and storing the first transaction into the memory pool (S16).

Abstract: A block confirmation method, a device, and a storage medium are provided. The method comprises: receiving several pieces of voting information of a first block, the voting information being generated by means of a signature after a committee node has received the first block packaged and broadcasted by a first recording node and verifies the first block successfully (S13); determining whether the voting information satisfies a preconfigured voting confirmation rule; if so, performing packaging according to the voting information to generate a first transaction (S14); and packaging the first transaction into a second block (S15). Said method shortens the block confirmation time, reduces the risk of double spending, improves the performance of blockchain systems, and provides a good user experience for users.

Abstract: Provided are a main chain and parallel chain architecture system, a block synchronization method, a device, and a storage medium. The system comprises: a main chain system, a load balancing system and a parallel chain system, wherein the load balancing system is used for configuring a fixed first access address and first port for each main chain node of the main chain system, and the first access address and the first port are used for each parallel chain node of the parallel chain system to access each main chain node; and the load balancing system is further used for automatically switching, when a first main chain node accessed by a first parallel chain node cannot be accessed, the first main chain node to an accessible second main chain node for the first parallel chain node.

Abstract: A digital asset custody method and apparatus, and a storage medium is disclosed. The method includes acquiring identity information of a first user; allocating a first public-private key pair to the first user; encrypting and storing a correspondence between the first public-private key pair and the identity information, generating multiple first addresses on a first blockchain, so as to allow a client of the first user to acquire the same; monitoring whether the client performs transfer to at least one of the first addresses; and if so, performing, on a second blockchain, corresponding token transfer to a second address of the first user according to a currency type and the amount of the transfer. The second address is generated according to a first public key of the first public-private key pair.

Abstract: Provided is an electrical fryer including an inner pot configured to contain oil, an oil filter configured to filter oil and drain oil contained in inner pot, an electrical heater.

Abstract: A method for reaching consensus in parachain includes the steps of: packaging a plurality of information of first blocks requiring consensus in a first parachain to generate first block information; transmitting he first block information to a corresponding node in a main chain for storing and recording the first block information in the main chain, and verifying the first block information stored and recorded in the main chain whether a number of first block information is not less than a first threshold number with the same information, to generate a consensus result; and synchronizing the consensus result, and writing the first block to the first parachain when the first block passes the verification.

Abstract: A data synchronization method for a parachain includes a step of obtaining first block operation sequence information, synchronizing blocks of a main chain according to the first block operation sequence information to generate or update the parachain, wherein the first block operation sequence information is obtained by updating the first block after the main chain receives a plurality of transaction information sent by a client user terminal to perform consensus on the transaction information and to generate the first block and to record the operation serial number of the first block, wherein the first block operation sequence information includes an operation serial number and operation information of each block of the main chain, and an operation serial number and operation information of the block revoked by a node of the main chain when the block revoking is executed.

Abstract: The present invention provides a parallel chain cross-chain transaction method, a device and a storage medium.

Abstract: Disclosed in the present invention are a block chain transaction storage method and queuing method. Said method comprises: writing a certain few bits of a transaction hash value into a bitmap table, one bit being able to store only one transaction hash value satisfying the condition, queuing other transactions satisfying the condition; consensus nodes performing mining, the consensus node N which firstly calculates a Merkel root hash value broadcasting the Merkel root hash value and its own bitmap table to other consensus nodes; by comparing the bitmap tables, quickly searching for missing or inconsistent data; and generating a block after consensus is reached. In cases where the transaction volume is huge and the transaction is congested, a user can set the priority of the transaction queuing according to his own demand.

Abstract: The present invention provides a multi-chain concurrent transaction method, including the following steps. The cross-chain transaction information sent by a user through a user terminal is received; the cross-chain transaction information is distributed to the accounting node and the consensus node of the corresponding main chain or sub-chain according to the payer address of the cross-chain transaction information, so that the accounting node of each main chain or sub-chain performs multi-chain concurrent transaction, so that the main chain or sub-chain does not occupy a large amount of bandwidth while obtaining cross-chain transaction information, and the performance of the blockchain network is guaranteed.

Abstract: A quiz game processing method and system thereof includes the following steps. Receive a quiz game order releasing request information sent by a first party terminal and release a quiz game order according to the quiz game order releasing request information. The quiz game order releasing request information includes a first quiz game content, a first hash value of a computation operation result obtained by a specified first operation performed on a random value, and a second hash value of the random number. Receive a quiz game request information sent by one or more second party terminals in response to the quiz game order. Trigger a quiz game smart contract. The quiz game request information includes a second quiz game content. Monitor, by the quiz game smart contract, whether the first party terminal releases a random value within a predetermined period of time and generate a quiz game result according to a monitoring result.

Abstract: The invention relates to the electric power field, in particular to a live working robot used for running and operating along wires of high-voltage transmission lines, which can realize obstacle surmounting of the live working robots along the wires safely and conveniently, comprising: a main body; a walking mechanism, wherein the walking mechanism comprises three walking arms installed on the main body and spaced apart from one another, a rolling wheel is arranged at an end of each walking arm and is in an online state when being located on an upper surface of a wire or in an offline state when being separated from the wire; the rolling wheels of at least two walking arms are in the online state; at least one part of the walking arm can extend and retract in the vertical direction to change the vertical position of the rolling wheel relative to the wire, and at least one walking arm has a rotatable portion which can rotate to change the position of the rolling wheel relative to the wire; a mounting mechanism

Abstract: Provided is an electrical fryer including an inner pot configured to contain oil, an oil filter configured to filter oil and drain oil contained in inner pot, an electrical heater.

Abstract: The invention relates to the electric power field, in particular to a live working robot used for running and operating along wires of high-voltage transmission lines, which can realize obstacle surmounting of the live working robots along the wires safely and conveniently, comprising: a main body; a walking mechanism, wherein the walking mechanism comprises three walking arms installed on the main body and spaced apart from one another, a rolling wheel is arranged at an end of each walking arm and is in an online state when being located on an upper surface of a wire or in an offline state when being separated from the wire; the rolling wheels of at least two walking arms are in the online state; at least one part of the walking arm can extend and retract in the vertical direction to change the vertical position of the rolling wheel relative to the wire, and at least one walking arm has a rotatable portion which can rotate to change the position of the rolling wheel relative to the wire; a mounting mechanism

Abstract: The present invention relates to a method for treating or preventing bone fracture, which comprises administering an effective amount of calcium L-threonate to a subject in need of such prevention or treatment. It had been found from experiments that calcium L-threonate could not only promote proliferation, differentiation and mineralization of osteoblasts, but also could promote the expression of collagen I mRNA of osteoblasts cultured in vitro. Accordingly it facilitated bone fracture healing and increased bone density and mechanical performance, so as to prevent or treat bone fracture.

Abstract: The present invention relates to a method for preventing or treating of cartilage related diseases, such as osteoarthritis, rheumatoid arthritis, articular cartilage damage, multiple chondritis, osteochondrosis, etc., which comprises administering an effective amount of calcium L-threonate to a subject in need of such prevention or treatment. It had been demonstrated by experiments that calcium L-threonate could improve significantly the positive expression percentage of collagen I mRNA in the chondrocyte and osteoblast, improved significantly the positive expression percentage of articular cartilage and epiphyseal cartilage, facilitated the growth of chondrocyte, increased the quantity of bone collagen, and promoted the formation of bone and cartilage matrix and the synthesis of proteoglycan. It could also promote the formation of bone nourishing blood vessels and improve the microcirculation of bone.

Abstract: This invention involves a new kind of compound—the chromate L-threonate which molecular formula is Crn(C4H8-nO5)3 (n=1, 2 or 3). The chromate L-thronate can be applied to a high performance supplement of chromium(III) as well as effective hypoglycemic treatment for those diabetes patients and health care.

Abstract: The present invention relates to a method for preventing or treating of cartilage related diseases, such as osteoarthritis, rheumatoid arthritis, articular cartilage damage, multiple chondritis, osteochondrosis, etc., which comprises administering an effective amount of calcium L-threonate to a subject in need of such prevention or treatment. It had been demonstrated by experiments that calcium L-threonate could improve significantly the positive expression percentage of collagen I mRNA in the chondrocyte and osteoblast, improved significantly the positive expression percentage of articular cartilage and epiphyseal cartilage, facilitated the growth of chondrocyte, increased the quantity of bone collagen, and promoted the formation of bone and cartilage matrix and the synthesis of proteoglycan. It could also promote the formation of bone nourishing blood vessels and improve the microcirculation of bone.

Abstract: The present invention relates to a method for treating or preventing bone fracture, which comprises administering an effective amount of calcium L-threonate to a subject in need of such prevention or treatment. It had been found from experiments that calcium L-threonate could not only promote proliferation, differentiation and mineralization of osteoblasts, but also could promote the expression of collagen I mRNA of osteoblasts cultured in vitro. Accordingly it facilitated bone fracture healing and increased bone density and mechanical performance, so as to prevent or treat bone fracture.

Abstract: A compound of ferrous L-threonate with structure (I), its compostions and methods useful for iron supplementation for mammals, particularly for human body to improve and treat nutritional iron-deficiency anemia, blood loss anemia and hemolytic anemia.