Design And Implementation Of Bitcoin Transaction Measurement And Analysis System In Darknet

Due to the anonymity of the dark network,there are a large number of illegal transactions on the dark network.Most of these illegal transactions are carried out through digital currency,of which bitcoin is the most used.The decentralization of bitcoin and the pseudonymous nature of transactions increase the difficulty for regulators and researchers to track and analyze illegal transactions.Therefore,the measurement and analysis of bitcoin transactions on the dark network is of great value for tracking illegal transactions.At present,the existing blockchain browsers and related transaction analysis software do not include the information retrieval of the dark network bitcoin address,and lack the dark network address label and label retrieval function.In addition,the existing blockchain browser only provides hash based retrieval for bitcoin information,and the retrieval method is single,so the regulators can not retrieve the fuzzy transaction information,and lack of exchange address query.In order to solve the above problems,thesis constructs a dark network address tag library by crawling the relevant information,and realizes the automatic propagation function of tag information based on transaction heuristic rules,and realizes the multi condition fuzzy retrieval function of transaction.Based on the address tag library of the dark network,a complete set of bitcoin measurement and analysis system for the dark network is implemented by using the flash technology(1)Build the address tag library,design the format of address tag according to the specific needs,complete the collection of dark network site,dark network bitcoin address,open network tag information and exchange address information,realize the automatic transmission function of address tag,and complete the design and implementation of various functions according to the needs.(2)Realize the fuzzy query function of the transaction,design the transaction storage format,analyze the bitcoin block data,design the query conditions,realize the multi condition retrieval of the transaction,and complete the design and implementation of the function.(3)Build the address monitoring module,manage the monitoring address,design the alarm receiving mode,and complete the design and implementation of related functions according to the demand analysis.(4)Visual analysis of bitcoin transactions in the dark network shows the number and amount of bitcoin transactions in the dark network,the number of addresses flowing into the dark network,the number of active addresses in the dark network,and the balance of dark network addresses in the form of dynamic charts to complete the design and implementation of various functions.