3results about How to "Ensure transaction security" patented technology

The application discloses a blockchain transaction processing method and device, a storage medium and a product. The method comprises the following steps: in a transaction execution stage, a business function parameter of a target business contract is transmitted to a built-in supervision contract by calling a common transaction; at least one extended supervision contract is called according to the business function parameter by the built-in supervision contract, wherein the built-in supervision contract is a pre-compiled contract integrated in a source code of a bottom layer node of a blockchain; the process of calling the target business contract by the common transaction is supervised and reviewed by the at least one extended supervision contract, and a review result is obtained; and the common transaction is processed according to the review result, so that abnormal behaviors or illegal behaviors occurring in the transaction can be timely blocked.

This invention discloses a smart contract execution method in data asset transactions, belonging to the field of smart contract execution technology. The method includes: based on multiple transaction nodes triggered during smart contract execution, a reputation value is obtained based on the historical transaction execution of each transaction node for hierarchical selection, resulting in a verification layer and an execution layer, each containing multiple transaction nodes; based on each transaction node in the verification layer, signature validity verification is performed, and the validity verification pass rate is compared with a first threshold; in response to a validity verification pass rate greater than or equal to the first threshold, based on the multiple transaction nodes in the execution layer, some transaction nodes are selected for cross-validation, and the cross-validation pass rate is compared with a second threshold; if the cross-validation pass rate is less than the second threshold, cross-validation is performed on all transaction nodes in the execution layer for transaction execution judgment; if the cross-validation pass rate is greater than or equal to the second threshold, the transaction is executed.

This application relates to the technical field of coin authentication, and in particular to an automated method and system for coin authenticity authentication based on multispectral image fusion. The method determines the type information of the coin to be authenticated, and moves the coin to be authenticated to either a banknote authentication position or a coin authentication position based on the type information. For the banknote authentication position, multispectral image detection and microscopic feature detection are performed to generate authenticity information. For the banknote authentication position, creases and moisture spots are identified to generate condition information. For the coin authentication position, alloy composition and patina elements are detected to determine authenticity information. For the coin authentication position, data acquisition and model construction of the three-dimensional morphology are performed to obtain condition information.