Smart Blockchain

Blockchain technology in Bitcoin is a decentralized, de-trusted, open and transparent distributed data storage technology that can reduce trust costs and achieve secure and reliable data interaction. However, an attacker can easily obtain all the Bitcoin transaction information from a public global ledger and use big-data analysis techniques to mine private information such as user transaction laws. Therefore, it is necessary to hide some of the transaction information in the public data. This paper presents a Bitcoin transaction information hiding algorithm based on HEVC without intra-frame distortion drift. We embed the specified transaction data into the three-tuple of the 4 4 luminance DST blocks which meet our conditions to avert the distortion drift. With the cross using of multiple three-tuple, the visual quality of the embedded video had a better promotion than using single three-tuple. The experimental results show that this new data hiding algorithm can effectively avert intra-frame distortion drift and get good visual quality.