Research On Key Technologies Of Wooden Crafts Traceability System Based On Graphic Blockchain

With the development of information technology,e-commerce,finance and other modern service industries have developed rapidly.Wooden handicrafts with high value have gradually entered people’s consumption vision.The existing traceability system of traditional wooden handicrafts has problems such as poor traceability of traceability data,information islands,and poor security of data storage.The decentralization,tamper-proof,and data encryption of blockchain technology can effectively solve the above problems,but there are obvious shortcomings in the current popular blockchain data organization and storage management.The organization of blockchain data is coarse-grained,the storage structure is solidified,and the scalability is very poor,resulting in its small throughput and slow information chain up,which can not meet the business needs of frequent chain up when the number of users of wooden handicraft traceability system is large.Aiming at the problems of low throughput,limited traceability information supervision,and scalability of wooden handicraft traceability systems based on traditional blockchain,this paper proposes a wooden handicraft traceability model based on graphic blockchain.First of all,this paper uses DAG(Directed Acyclic Graph)as the underlying data structure of the blockchain to increase the throughput of the blockchain system and achieve fine-grained control of blockchain transactions.Based on the DAG blockchain,it proposes a consensus mechanism based on a randomly verifiable function,reducing the complexity of partial centralization and finding the only main chain,and achieving final consistency confirmation;Secondly,a dynamic Schnorr threshold signature scheme suitable for blockchain traceability scenarios is proposed to solve the problems of reliance on trusted center and low efficiency of a signature generated by ECDSA signature algorithm and group signature algorithm.This scheme is based on the Pedersen verifiable secret sharing scheme,without the need for a thirdparty trust center.The signature members verify each other and generate a sub-key,and establish a member join and member exit mechanism according to the characteristics of the signature members;Finally,on the basis of the scheme in this paper,the system requirements analysis,outline design,and detailed design are carried out through the relevant ideas of software engineering,and the development and testing of the relevant systems are finally realized.Through performance analysis,we can see that under the DAG structure,the blockchain throughput has increased significantly,and the threshold signature efficiency has improved significantly.The experimental results show that the DAG blockchain model proposed in this paper can greatly improve the throughput and scalability of the wooden handicraft blockchain traceability system,and weaken the degree of centralization.At the same time,on the premise of ensuring the security of the signature,the Schnorr threshold signature scheme proposed in this paper has less computation,which shortens the signature time and signature verification time of the threshold signature.The system test stage shows that the traceability scheme of wooden handicrafts proposed in this paper can realize the functions of fast chaining and traceability information retrieval of wooden handicrafts traceability information under the DAG blockchain environment,meet the needs of consumers to master the traceability information of wooden handicrafts,and also enable relevant departments to effectively supervise the traceability information.The traceability scheme of wooden handicrafts ensures the relevant interests of consumers to a certain extent,promotes the sustainable development of the wooden handicraft industry,and provides a constructive scheme for traceability applications in other scenarios.